Search found 96 matches

by J and M Machine
Mon Mar 04, 2024 6:56 pm
Forum: General Discussion Forum
Topic: Transmission brake drum
Replies: 13
Views: 773

Re: Transmission brake drum

I don't know if they are still available, but years ago someone was making new narrow late '25 style brake drums with the extra bosses for the later lug shoes cast in, my '24 came to me with one. Update - looks like Lang's still sells it as a bare drum, you have to rivet it to your shaft. https://w...
by J and M Machine
Mon Feb 12, 2024 6:50 pm
Forum: General Discussion Forum
Topic: Crankshaft journal radius
Replies: 4
Views: 404

Re: Crankshaft journal radius

We try and keep them as big as possible. At least 3/32"
Problem is after 100 years and bad machine shops most often nothing left.
BTW: since everyone else is advertising now on the forum:
https://www.jandm-machine.com/grinding.html
by J and M Machine
Sat Dec 30, 2023 10:24 am
Forum: General Discussion Forum
Topic: Sanity Check - Triple Gear Pins
Replies: 6
Views: 606

Re: Sanity Check - Triple Gear Pins

J and M: Are the current replacement shafts made the same size the length of the shaft or like the ones mentioned in the manual. Probably the same size length wise and then ream the gear bushing to fit? Thanks Hello John: Yes approximately the same ,you just have to be aware that the portion that p...
by J and M Machine
Fri Dec 29, 2023 10:56 am
Forum: General Discussion Forum
Topic: Sanity Check - Triple Gear Pins
Replies: 6
Views: 606

Re: Sanity Check - Triple Gear Pins

Check the size of the holes after you push them out .
We have seen replacement pins that are oversize and will crack the flywheel when trying to reinstall.!
by J and M Machine
Thu Dec 07, 2023 9:11 am
Forum: General Discussion Forum
Topic: Driving plate tailshaft failed rivets
Replies: 23
Views: 1199

Re: Driving plate tailshaft failed rivets

Check the drive plates carefully as we have seen alot through the years that the iron of the plate is crumbling around rivets and forms a crack between them. May not be the rivets that failed it could be the plate itself. I was not able to see your images but wanted to point this out as well. As wit...
by J and M Machine
Tue Nov 21, 2023 5:55 pm
Forum: General Discussion Forum
Topic: Cracked block
Replies: 22
Views: 1609

Re: Cracked block

Nv Bob wrote:
Sun Nov 19, 2023 10:50 pm
Best way seal a cracked block still good but had water left in it and cracked between rad and s/n
I've used block seal in the past any other ideas
Thanks in advance
You mean a permanent repair like metal stitching? Yes we can do it. Without the silly putty.
by J and M Machine
Tue Nov 14, 2023 12:07 pm
Forum: General Discussion Forum
Topic: Transmission drum
Replies: 13
Views: 682

Re: Transmission drum

I would recommend you check the other two drums along with triple gears while you're there as you may be replacing more than just one drum.!
by J and M Machine
Fri Nov 03, 2023 5:34 pm
Forum: General Discussion Forum
Topic: Balancing an engine
Replies: 8
Views: 1217

Re: Balancing an engine

Refurbishing the engine for my '13. By matching heavier pistons with lighter connecting rods, weights vary 9/10 of an ounce, 1/2 oz., and 3/10 oz. over the lightest pairing. I suppose it's possible to have them weigh up equal, how necessary is that ? What do experienced T engine rebuilders consider...
by J and M Machine
Fri Sep 15, 2023 9:19 am
Forum: General Discussion Forum
Topic: Lock N Stitch
Replies: 17
Views: 1118

Re: Lock N Stitch

I am thinking about Lock N Stitch as a repair method on a cracked water jacket. This is for a Buick Model 14, not a Model T, so replacement or risking any futher damage in the repair method is not really an option. I am thinking that the planning is every bit as important as the actual drilling and...
by J and M Machine
Fri Aug 25, 2023 8:46 am
Forum: General Discussion Forum
Topic: Cylinder Head Flatness
Replies: 16
Views: 1034

Re: Cylinder Head Flatness

I've had issues with the new generation gasket material not holding torque. You shouldn't have to retorque but once. Unfortunately this is what the head gaskets are today. Same with Model A and V8 gaskets. Must be retorqued after 5 minutes of running time as they will loosen up. We tell our custome...
by J and M Machine
Wed Aug 23, 2023 6:29 pm
Forum: General Discussion Forum
Topic: Cylinder Head Flatness
Replies: 16
Views: 1034

Re: Cylinder Head Flatness

Quote " However, upon checking the head, it appears to be out by .004", (on a freshly re-decked head), making the gasketed surface concave. So, what did it? The .004" out-of-flat," It could of been machined that way, if you just installed the head and already blew a gasket then I would speak with th...
by J and M Machine
Wed Aug 09, 2023 9:27 am
Forum: General Discussion Forum
Topic: Scored transmission drums
Replies: 6
Views: 604

Re: Scored transmission drums

Mr.Man: Looking at the condition of your drums I would suggest disassembly and inspection for cracks! You have it apart and only takes a little more time to have them off and on the table. There's a high probability that the reverse is cracked with the brake drum wear as the reverse drum is usually ...
by J and M Machine
Sat Apr 22, 2023 9:32 am
Forum: General Discussion Forum
Topic: Triple gear bushings melted ???
Replies: 42
Views: 3502

Re: Triple gear bushings melted ???

Hello Pierre: I have never seen this before. most likely you're victim of bad parts."Bushings" The triple gear pins have to be perfect to fit the new bushings , If there is any wear as they always wear on one side. They need to be replaced from just overheating them alone. If you'd like to contact u...
by J and M Machine
Thu Mar 16, 2023 7:54 am
Forum: General Discussion Forum
Topic: Need help locating a KR WILSON PAN TABLE IN GA OR SC
Replies: 4
Views: 650

Re: Need help locating a KR WILSON PAN TABLE IN GA OR SC

JTT3 wrote:
Tue Mar 14, 2023 2:51 pm
So now does anyone in South Carolina or Georgia have a pan straightening table that repairs pans? Trying to help a member that lives in South Carolina close to the boarder of Ga around Augusta. Best John
Have you tried "Gator Gould"?
gatorsts@frontiernet.net
by J and M Machine
Sat Jan 21, 2023 9:48 am
Forum: General Discussion Forum
Topic: How to balance a flywheel?
Replies: 16
Views: 1688

Re: How to balance a flywheel?

'Quote" If I sandwich the flywheel between two transmission shafts, bolt them together, and put the works on the balancer, will that be good enough, or is there likely to be too much runout in the shafts. Yes You can get away with this to get it close but right way is to have it dynamically spun on ...
by J and M Machine
Wed Dec 28, 2022 12:53 pm
Forum: General Discussion Forum
Topic: Engine rebuild: 25 block, 26 crank
Replies: 13
Views: 1545

Re: Engine rebuild: 25 block, 26 crank

As with anything pushing 100 years old.
Really doesn't matter year it matters of it's condition.
Main thing is to have them crack checked; both block and crank.
Just because people in this forum rave about the EE crank, they crack just like any other.
by J and M Machine
Fri Dec 23, 2022 9:45 am
Forum: General Discussion Forum
Topic: Who Made This Transmission Drum?
Replies: 8
Views: 1260

Re: Who Made This Transmission Drum?

"Are you saying the drum lugs tend to be undersized on the Evans drums? Might explain why 3 are missing on my example!" An Affirmative Yes: Most frustrating thing for us rebuilding engines is when the parts don't fit or fail. As I mentioned these were the reason we started to make them the right way.
by J and M Machine
Thu Dec 22, 2022 4:10 pm
Forum: General Discussion Forum
Topic: Who Made This Transmission Drum?
Replies: 8
Views: 1260

Re: Who Made This Transmission Drum?

I picked this up in Hershey this year. It's not marked Ford anywhere. Just the part number and the date. I'm thinking J&M, but they usually have their name in the casting, don't they? Also, wondering why it was removed. It shows almost no wear or damage, I have not checked the balance yet. Anyone k...
by J and M Machine
Tue Dec 13, 2022 9:29 am
Forum: General Discussion Forum
Topic: Crankshaft Testing
Replies: 15
Views: 2061

Re: Crankshaft Testing

DRY MAGNAFLUX is useless on a 3 Dimensional part. Ring test is also useless. Only way to know for sure is to clean the crank that there is no dirt or rust on it and have it wet magnafluxed. Doesn't matter if it's an ABCD EE crank they all will crack and there's only one way to find out. When we had ...
by J and M Machine
Sat Dec 03, 2022 9:12 am
Forum: General Discussion Forum
Topic: Bent Scat crankshaft
Replies: 60
Views: 7296

Re: Bent Scat crankshaft

Would it be a good idea first to see how the issue raised in this thread is resolved? [/quote] Yes, Because for people out of the country like this person, your calls will most likely fall on deaf ears. We're in USA and it's hard enough for us to get any updates on cranks for our customers never mi...
by J and M Machine
Thu Dec 01, 2022 7:00 pm
Forum: General Discussion Forum
Topic: Transmission Help
Replies: 10
Views: 1393

Re: Transmission Help

I would listen to what Mr.Jelf Says as just cleaning it isn't doing the transmission justice.
The drums may be cracked along with magnets and the triple gears may be toast along with the pins.
What you may not see will hurt you and the engine.
by J and M Machine
Thu Dec 01, 2022 6:51 pm
Forum: General Discussion Forum
Topic: Bent Scat crankshaft
Replies: 60
Views: 7296

Re: Bent Scat crankshaft

It's unfortunate that you didn't get what you've paid for. However the crank could be straightened but I would wait to hear back from Lang's, Have you tried directly contacting former owner of SCAT? Tom Lieb <tlieb@ScatEnterprises.com> IMG_3211.JPG Problem with straightening your crank is they may h...
by J and M Machine
Tue Nov 15, 2022 9:31 am
Forum: General Discussion Forum
Topic: Magnet Retainer Plate Level on Flywheel
Replies: 37
Views: 2967

Re: Magnet Retainer Plate Level on Flywheel

[quote="Steve Jelf" I believe machining the face of the whole assembly is overkill. Using shims I get a variation among the plates of less than .005". I call that good enough. For the people that want the best for their Model T, it's not overkill. We resurface both flywheel and the mag field so that...
by J and M Machine
Mon Nov 07, 2022 5:39 pm
Forum: General Discussion Forum
Topic: crankshaft dimensions for regrind
Replies: 7
Views: 981

Re: crankshaft dimensions for regrind

We typically stop at .030" under.
Don't forget to have the crankshaft crack inspected with wet mag "magnaflux"
Also make the shop aware they have to touch off the crank flange surface.
IMG_3688.JPG
by J and M Machine
Fri Nov 04, 2022 9:42 am
Forum: General Discussion Forum
Topic: Snow Mobile Questions
Replies: 28
Views: 2322

Re: Snow Mobile Questions

One to ask questions to is the snowmobile man Brian Moriarity
https://www.nhsnocar.com/
by J and M Machine
Wed Oct 26, 2022 6:21 pm
Forum: General Discussion Forum
Topic: Transmission drums, how much wear is too much
Replies: 12
Views: 1318

Re: Transmission drums, how much wear is too much

don't forget to purchase a lint screen for the new bands and Clean it often.
by J and M Machine
Wed Oct 12, 2022 9:21 am
Forum: General Discussion Forum
Topic: What is the condition of my engine?
Replies: 30
Views: 2831

Re: What is the condition of my engine?

I found a report online about inserting cylinder liners and installing hardened valve seats https://www.modeltcentral.com/Model-T-Ford-Engine-Specifications.html. I think that matches what you wrote. According to my engine shop friend, it is common for us to use a top flanged cylinder liner as in t...
by J and M Machine
Thu May 12, 2022 7:03 pm
Forum: General Discussion Forum
Topic: Model A Crank
Replies: 5
Views: 1237

Re: Model A Crank

We've seen more of the earlier beaver tail version of the Model A crack than the later style rounded style crank.
As with any crank you can say one is better than another, the only test worth doing is to have it wet magnafluxed.
magged crank crack.jpg
by J and M Machine
Wed May 04, 2022 9:03 am
Forum: General Discussion Forum
Topic: Looking for email for Adam Hubacz
Replies: 2
Views: 768

Re: Looking for email for Adam Hubacz

Hello Brett:
Just sent you an email with his contact information.
by J and M Machine
Thu Apr 28, 2022 9:36 pm
Forum: Services
Topic: Resurfacing mag fields
Replies: 2
Views: 1580

Re: Resurfacing mag fields

Cost to resurface the Mag fields is $100 dollars plus shipping.
Thanks
by J and M Machine
Thu Apr 28, 2022 8:28 am
Forum: General Discussion Forum
Topic: Whole lot of roadblocks.
Replies: 19
Views: 2680

Re: Whole lot of roadblocks.

Quote" First and foremost, there is crankshaft end play, about 0.03" worth. When the engine is shifted, the crank and transmission audibly move back and fourth. This is the only play I can detect, however. Secondly, when the crank is in its most forward position, the magnet clamps slightly grind on ...
by J and M Machine
Wed Apr 13, 2022 6:55 pm
Forum: Services
Topic: Resurfacing mag fields
Replies: 2
Views: 1580

Resurfacing mag fields

We offer this service of resurfacing mag fields.
No more struggling with uneven air gaps get it right the first time.
Contact us by phone 508-460-0733 or email sales@jandm-machine.com
by J and M Machine
Mon Apr 11, 2022 9:13 am
Forum: General Discussion Forum
Topic: Transmission drum riveting
Replies: 14
Views: 1887

Re: Transmission drum riveting

Bryant wrote:
Sun Apr 10, 2022 4:59 pm
So are there any suppliers of new gears/shafts that are riveted to the drums/drive plate? Or only used ones?
Yes we make new drums and gears that are fully machined to each other so you don't have to install new drums on old gears.
http://www.jandm-machine.com/custom_works.html
by J and M Machine
Sat Apr 09, 2022 4:50 pm
Forum: General Discussion Forum
Topic: Transmission drum riveting
Replies: 14
Views: 1887

Re: Transmission drum riveting

Has anyone tried to re-rivet their transmission drums? Has anyone tried to tighten up loose transmission drum rivets ? Does anyone know what tool was used to rivet drums? Is there a source for replacement riveted gears/shafts for drums? My driving plate rivets are just slightly loose. Not scary/cra...
by J and M Machine
Wed Mar 30, 2022 9:24 am
Forum: General Discussion Forum
Topic: Weak Blocks
Replies: 9
Views: 1775

Re: Weak Blocks

Of the articles/ posts that I've read it seems that most common issues is a bock cracks on the water outlet side of the motor (driver side) from mostly freezing it seems. Are there other known weak spots on this block that happen for other reasons such as vibration or tension? On all the picture I ...
by J and M Machine
Thu Mar 24, 2022 12:43 pm
Forum: General Discussion Forum
Topic: Flywheel
Replies: 20
Views: 2420

Re: Flywheel

Thanks for quick reply and answer to my wishful thinking question. I am dong a refresh of my engine and going to replace magnets with dist. ignition. Don't want to mess with trans, as car did drive ok before this engine work. I hope I am not being short sighted in leaving trans as is. I appreciate ...
by J and M Machine
Fri Mar 18, 2022 6:51 pm
Forum: General Discussion Forum
Topic: What have you done on your Model T in March?
Replies: 47
Views: 6049

Re: What have you done on your Model T in March?

rebuilding a 1913 ,1915 and a 1925. Model T Hobby is alive and well around us.
by J and M Machine
Thu Jan 06, 2022 7:38 pm
Forum: General Discussion Forum
Topic: Pan Straightening Jig
Replies: 22
Views: 2955

Re: Pan Straightening Jig

Hey Bob! I had reached out to Ora this morning and am awaiting his reply. I kind of get the impression that he has gotten away from doing T stuff anymore and is concentrating solely on the Model A’s. I bet your mentor had one of these jigs…. He had some cool stuff in that garage! We're located in M...
by J and M Machine
Thu Jan 06, 2022 7:37 pm
Forum: General Discussion Forum
Topic: Pan Straightening Jig
Replies: 22
Views: 2955

Re: Pan Straightening Jig

I've heard tell of making a jig from a 26-27 block and hogshead bolted together. I aim to give it ago. That wouldn't work by just bolting them together. The fourth main alignment tool that locates the pan and hogs head to the assembly. If you tried to straighten pan off the engine you don't have an...
by J and M Machine
Mon Dec 27, 2021 7:24 pm
Forum: General Discussion Forum
Topic: Wanting to resume T activity
Replies: 26
Views: 3134

Re: Wanting to resume T activity

There is more than one thread to refer to. After my father received a pace-maker, I looked into it. Searching the internet brought up Boston Scientific's safety matrix, a very informative matrix of what his pace-maker could and could not handle. At the time, I posted the information, it's source, a...
by J and M Machine
Wed Dec 15, 2021 12:50 pm
Forum: General Discussion Forum
Topic: Machine shop (lathe) Oregon
Replies: 16
Views: 2527

Re: Machine shop (lathe) Oregon

Someone will have a drawing, and I'll bet there is no surface finish call out that equates to modern measurement systems (if any at all). In reality, a 32Ra or 16Ra finish is fine. 16 being a bit of overkill. With the correct tool and surface speed, lathe turning is absolutely fine if you know what...
by J and M Machine
Tue Dec 14, 2021 3:57 pm
Forum: General Discussion Forum
Topic: Machine shop (lathe) Oregon
Replies: 16
Views: 2527

Re: Machine shop (lathe) Oregon

Looking for recommendations of a machine shop that can work on transmission drums in the Portland Oregon area. Thanks Tom Make sure they can clean and crack inspect them first. ! The picture enclosed is the reason we started making new drums and hubs as what was is available wasn't to our standard ...
by J and M Machine
Tue Dec 07, 2021 6:24 pm
Forum: General Discussion Forum
Topic: A Small Block Weld
Replies: 9
Views: 1839

Re: A Small Block Weld

What would be the best rod to use for welding a small crack in an engine block base? Earlier I was told mild steel, but I forget the number. Recently, I was told stainless steel. Now a guy wants to use nickel that is a lot more expense. I hope that it's not his first welding job on cast iron? Main ...
by J and M Machine
Sat Dec 04, 2021 6:10 pm
Forum: General Discussion Forum
Topic: piston clearance
Replies: 4
Views: 1255

Re: piston clearance

I just bought a set of pistons and it says 2 to 3 tho clearance, it seems tight to me ,what do you think for new pistons? MEL It depends on condition of the block: We thermal clean the engines so they get the heat transfer. We set our cylinders to their recommended 3 thousandths clearance and have ...
by J and M Machine
Tue Nov 30, 2021 6:49 pm
Forum: General Discussion Forum
Topic: What have you done with your T in November
Replies: 53
Views: 9304

Re: What have you done with your T in November

Model T Blocks.jpg
1915 and a 1921 being rebuilt:100 plus years and counting, coming back to life.
by J and M Machine
Sat Oct 30, 2021 3:23 pm
Forum: General Discussion Forum
Topic: Any "T" people near Fr. Dodge, Iowa?
Replies: 3
Views: 1037

Re: Any "T" people near Fr. Dodge, Iowa?

Hello Rob:
It may of been Ron Patterson that rebuilt the coils as he used to live in MA.
i would tell your friend in Fort Dodge to look for Model T club out there.
by J and M Machine
Thu Sep 30, 2021 8:07 am
Forum: General Discussion Forum
Topic: A visit to J&M Machine in MA
Replies: 19
Views: 3346

Re: A visit to J&M Machine in MA

Speedytinc, Thanks for your suggestions but it is not necessary for us to perform a hardness test on our drums as we know the iron is quality checked before leaving the foundry and we know the WEAKEST of ductile cast iron is as strong as the STRONGEST available gray cast iron which Henry didn’t even...
by J and M Machine
Tue Sep 28, 2021 6:46 pm
Forum: General Discussion Forum
Topic: A visit to J&M Machine in MA
Replies: 19
Views: 3346

Re: A visit to J&M Machine in MA

J&M Machine makes their own drums. I've got them in my car. They have new gears pressed on them as well not old gears pressed on a new drum. The drums I saw had used gears. Do you happen to know the hardness condition of these new drums? How do they compare to Henery's? Would like to know if I need...
by J and M Machine
Fri Aug 13, 2021 6:24 pm
Forum: General Discussion Forum
Topic: 4 CYL CHWVY ENGINE,
Replies: 15
Views: 2624

Re: 4 CYL CHWVY ENGINE,

This is what the engine looks like. We just completed.
by J and M Machine
Fri Jul 02, 2021 7:11 pm
Forum: General Discussion Forum
Topic: Engine and transmission questions
Replies: 7
Views: 1796

Re: Engine and transmission questions

Yes it is a good idea to balance when done properly.! The three pictures show how far out a Model T flywheel can be. This example is a 1914 that we balanced. Being off a total of 1010 grams or 2.2 pounds. Definitely car would of shook at any RPM. Best advice is to have it balanced along with weight ...
by J and M Machine
Wed Feb 10, 2021 6:53 pm
Forum: General Discussion Forum
Topic: Cracked Engine Block
Replies: 18
Views: 3316

Re: Cracked Engine Block

That's an interesting place for the block to crack. I believe that's something we can fix. If the block doesn't have a sleeve in that cylinder now it would need to be sleeved. Which we can do. I have enclosed two pictures of a 1912 Model T block that someone tried to repair with JB weld and our meta...
by J and M Machine
Sun Jan 31, 2021 9:29 am
Forum: General Discussion Forum
Topic: Need A Discussion Regarding Coating Inside of Engine/Hogshead
Replies: 29
Views: 3649

Re: Need A Discussion Regarding Coating Inside of Engine/Hogshead

Bruce- applying Glyptal to the inside of you engine and hogs head is completely un-necessary and will yield no measurable increase in performance. Use your commons sense, why go through all the trouble of making sure that every last bit of petroleum residue has been removed from the interior of you...
by J and M Machine
Thu Jan 28, 2021 9:37 am
Forum: General Discussion Forum
Topic: Harden Valve Seats---1927 Engine
Replies: 12
Views: 2458

Re: Harden Valve Seats---1927 Engine

I do agree that the hard seats are a more reliable seat material... but are overkill for the valve temperatures seen by a relatively low output engine equipped with quality stainless steel exhaust valves. The real cause of valve seat recession is carbon steel exhaust valves operating near their fus...
by J and M Machine
Wed Jan 27, 2021 7:00 pm
Forum: General Discussion Forum
Topic: Transmission Drums
Replies: 19
Views: 3317

Re: Transmission Drums

There are cracks to be avoided and cracks of little consequence. The J & M photos show both. The cracked web in the drum makes that drum a throw away. The small one around the rivet is of little consequence. It goes to the inside of the drum hub, and was most likely created in the riveting process ...
by J and M Machine
Wed Jan 27, 2021 6:53 pm
Forum: General Discussion Forum
Topic: First try with a Lock-n-Stitch repair
Replies: 6
Views: 1797

Re: First try with a Lock-n-Stitch repair

Jerry- my experience has been that you almost always see the valve chamber crack in the 26-27 blocks and not the earlier ones. Anyone? It depends on how hot the engine got as the valve seat cracks towards the exhaust manifold not towards the cylinder. It happens on all of them and not just a partic...
by J and M Machine
Wed Jan 27, 2021 6:49 pm
Forum: General Discussion Forum
Topic: Harden Valve Seats---1927 Engine
Replies: 12
Views: 2458

Re: Harden Valve Seats---1927 Engine

I disagree: The reason being is that if you are going to drive the vehicle on a regular basis then you should install them. The other factor to take into consideration is the new valve is harder against the stock cast iron block surface and will pound the stock seat out. If you're going to rebuild t...
by J and M Machine
Tue Jan 26, 2021 5:01 pm
Forum: General Discussion Forum
Topic: Milling Block Deck and Head
Replies: 13
Views: 2448

Re: Milling Block Deck and Head

. . . You'll never win an argument on the internet as some expert . . . will know more than all of us combined. :lol: So true ! So often contradictory opinions seem to prevent posts from actually providing good answers to the questions posed. As for re-surfacing heads and blocks, my question is whe...
by J and M Machine
Tue Jan 26, 2021 5:00 pm
Forum: General Discussion Forum
Topic: Transmission Drums
Replies: 19
Views: 3317

Re: Transmission Drums

OK We have a spray at work that checks welds for cracks. This spray is also used in engine construction. Surely it is enough to examine the drums with it ?! Do you have the one side where the drums are cheaper than Snyders? Would you drum and statically balance the starter wreath? greetz patrick Th...
by J and M Machine
Tue Jan 19, 2021 9:43 am
Forum: General Discussion Forum
Topic: Milling Block Deck and Head
Replies: 13
Views: 2448

Re: Milling Block Deck and Head

You're right regarding surfacing the block to make it flat as you don't have to remove much. Just enough to enable the surface flat. The cylinder head it doesn't make sense to remove that much better off to get a Z head or change pistons. Model A guys think they can do the same thing. The heads aren...
by J and M Machine
Mon Jan 04, 2021 6:53 pm
Forum: General Discussion Forum
Topic: Walden Worcester socket spanners.
Replies: 3
Views: 1237

Re: Walden Worcester socket spanners.

Wow Walden tools in Australia? Who would of thought? Allan: here's a link if you haven't already seen it. http://alloy-artifacts.org/walden-worcester.html We drive by the factory often as it was on the main road leading into city of Worcester. http://progress-is-fine.blogspot.com/2018/03/vanished-to...
by J and M Machine
Wed Dec 30, 2020 4:02 pm
Forum: General Discussion Forum
Topic: Crankshaft Balancing...
Replies: 26
Views: 4471

Re: Crankshaft Balancing...

Here's a perfect example of the flywheel being Way off. This is a 1914 we did . It was off @ 134 grams almost 5 ounces per inch of the diameter of the flywheel. Looking at it the total amount off was 1010 grams/ 2.2 pounds in total unbalance. Combined weight of unbalance of the magnets and flywheel ...
by J and M Machine
Tue Dec 29, 2020 5:46 pm
Forum: General Discussion Forum
Topic: Crankshaft Balancing...
Replies: 26
Views: 4471

Re: Crankshaft Balancing...

...there's no way to keep weight of the magnets even. [/size] Is there anything wrong with picking magnets that are all within a few grams and grinding a little off the ends of the heavier ones to equalize them before you charge and install them? Hello MrJelf: There's nothing wrong with that. HOWEV...
by J and M Machine
Tue Dec 29, 2020 9:19 am
Forum: General Discussion Forum
Topic: Crankshaft Balancing...
Replies: 26
Views: 4471

Re: Crankshaft Balancing...

For people in the know - should the crank and flywheel be balanced separately and then balanced again as an assembly or just balance the assembly only? balance.jpg As Dan mentioned the parts have to be balanced separately and don't forget to weigh the triple gears as most often they are off. As see...
by J and M Machine
Fri Nov 13, 2020 5:30 pm
Forum: General Discussion Forum
Topic: I want to build a wood engine stand (Need Help)
Replies: 22
Views: 3415

Re: I want to build a wood engine stand (Need Help)

Bruce: You can have a look at these pictures as this was shipped to us from Calgary Canada and went both ways without damage.
by J and M Machine
Thu Nov 05, 2020 8:27 am
Forum: General Discussion Forum
Topic: Need Valve job on my 1925 T
Replies: 4
Views: 1640

Re: Need Valve job on my 1925 T

If you are to proceed to do a valve job: Once you remove cam,inpect the cam lobes for wear and pitting. If the lobes aren't pitted it can be reground to touring or stock lift. The valve guides will need to be checked for wear if valves have never been replaced then you'll need to ream the valve guid...
by J and M Machine
Tue Oct 27, 2020 9:14 am
Forum: General Discussion Forum
Topic: Unknown engine block
Replies: 8
Views: 2114

Re: Unknown engine block

IMG_1829.JPG
It's an early Chevy block. One I have shown above is a 1927 that has distributor on side, Rusty one shown has it mounted in front so that one is very early.
by J and M Machine
Thu Oct 22, 2020 9:17 am
Forum: Classifieds - Parts
Topic: Resurface mag fields
Replies: 9
Views: 2368

Re: Resurface mag fields

Question John: are you grinding the four mounting locators prior to facing off the poles or visa-versa ? I'm just machining the mag faces: I check the bolt bosses and make sure there's no burrs on them and then secure it to machine and take enough to get it true. So far I haven't found a Mag plate ...
by J and M Machine
Wed Oct 21, 2020 6:12 pm
Forum: Classifieds - Parts
Topic: Resurface mag fields
Replies: 9
Views: 2368

Re: Resurface mag fields

Interesting that you both mention that as Lang's didn't have any for this customer and there was a delay in getting them reground.
I am posting this for people so they don't have to wait.
by J and M Machine
Tue Oct 20, 2020 9:27 am
Forum: Classifieds - Parts
Topic: Resurface mag fields
Replies: 9
Views: 2368

Resurface mag fields

We are now offering to resurface mag fields.
You can send yours to us and we can resurface it for you.
Cost is $50 dollars plus shipping.
J and M Machine
40 Mt. Vickery Rd
Southborough,MA
01772
508-460-0733
www.jandm-machine.com
by J and M Machine
Fri Oct 09, 2020 9:32 am
Forum: General Discussion Forum
Topic: Value of fresh magged and turned EE crankshaft
Replies: 11
Views: 2796

Re: Value of fresh magged and turned EE crankshaft

As a suggestion it may be better to sell them crack inspected and not ground.
Leave it up to the customer to get the crank reground.
by J and M Machine
Fri Sep 25, 2020 7:55 am
Forum: General Discussion Forum
Topic: Dare we analyze my cracked crankshaft?? I say we do.. but INTELLIGENTLY
Replies: 23
Views: 3872

Re: Dare we analyze my cracked crankshaft?? I say we do.. but INTELLIGENTLY

Quote "Has anyone real first hand experience of finding an original Ford crank that has shown no cracks after magnafluxing. " Yes we have. We had a customer a while back go to Langs to see what they had for cranks and Lang's Allowed him to choose the ones he wanted as he only needed one but brought ...
by J and M Machine
Wed Sep 23, 2020 4:33 pm
Forum: General Discussion Forum
Topic: Dare we analyze my cracked crankshaft?? I say we do.. but INTELLIGENTLY
Replies: 23
Views: 3872

Re: Dare we analyze my cracked crankshaft?? I say we do.. but INTELLIGENTLY

You didn't say "Wet magnaflux" as if it was done dry it only gives a one dimensional image whereas the Wet mag will give all three.
by J and M Machine
Wed Sep 23, 2020 8:21 am
Forum: General Discussion Forum
Topic: New triple gear pins?
Replies: 9
Views: 2511

Re: New triple gear pins?

Just so everyone knows the triple gear pins are pressed out towards the magnets as the pressed portion is a different size in flywheel. I would be aware of the hardness of the triple gear pins as we just did a flywheel assembly and the pins weren't hardened properly. What I mean by this is when i re...
by J and M Machine
Mon Sep 21, 2020 9:15 am
Forum: General Discussion Forum
Topic: Should You Balance Transmission Drums
Replies: 10
Views: 2292

Re: Should You Balance Transmission Drums

Probably would of been a better idea to replace the low speed drum than to take that much out of it. This post was mentioned a few years ago and some one mentioned our drums were off because they are cast as Ford's were. Took about 15 minutes to balance one for arguments sake as the poster was sayin...
by J and M Machine
Sat Sep 05, 2020 9:40 am
Forum: General Discussion Forum
Topic: low speed drum on trans rebuild
Replies: 11
Views: 2622

Re: low speed drum on trans rebuild

I am going through my trans, rebuilding what I can afford, on the way. The low speed drum isn't cracked but is worn a bit in the middle. Should I attempt to have it leveled out? Not sure how, economically... Mechanics that then brake drums are few and far between... But those are in the inside of t...
by J and M Machine
Fri Aug 28, 2020 9:32 pm
Forum: General Discussion Forum
Topic: Help In need of a pan streighting
Replies: 9
Views: 2741

Re: Help In need of a pan streighting

Since you're both on the west coast i would try these guys.
http://www.antiqueautoranch.com/newwebs ... ranch.html
by J and M Machine
Fri Jun 19, 2020 10:05 am
Forum: General Discussion Forum
Topic: Instead of pouring Babbitt...
Replies: 35
Views: 9476

Re: Instead of pouring Babbitt...

The bronze insert against the Model T Crank will be too hard and quick failure will result. Where it's a splash rather than high pressure system the bearings and crank will not survive in the atmosphere of a Model T. They chose babbitt because it's a softer material than bronze and it has ability to...
by J and M Machine
Fri Apr 17, 2020 12:41 pm
Forum: General Discussion Forum
Topic: Magnet leveling
Replies: 17
Views: 6158

Re: Magnet leveling

You guys are going about leveling the hard way. As Dan McEachern says and it's the way we do it quick and easy.
Any local machine shop can resurface the magnets as we have .
by J and M Machine
Thu Apr 02, 2020 5:55 pm
Forum: General Discussion Forum
Topic: lighten flywheel
Replies: 8
Views: 3324

Re: lighten flywheel

Want to lighten flywheel, no mag pro an con. comets needed engine will rev faster reach higher rpm and will run smoother any one in az that can machine the flywheel You don't have to physically machine the flywheel to remove weight. if you're going with a distributor then you can remove the magnets...
by J and M Machine
Fri Mar 06, 2020 7:16 pm
Forum: General Discussion Forum
Topic: Engine Rebuild Cost Estimate
Replies: 28
Views: 12246

Re: Engine Rebuild Cost Estimate

Hey everyone, Trying to get a rough price estimate on an engine rebuild. My 1923 Ford Model T runabout had low compression (but still ran) and needed all new pistons, piston rings, valves, guides, new camshaft, new timing gear, "re-babbited", new transmission bands, etc (basically a full-engine reb...
by J and M Machine
Tue Mar 03, 2020 8:07 am
Forum: General Discussion Forum
Topic: Rocker Arms Unlimited, Redding, CA
Replies: 10
Views: 4632

Re: Rocker Arms Unlimited, Redding, CA

We've always used them for our engines rocker arm rebuilding.
I always speak with "Gary" and never have had problems.

I'm surprised that anyone would of had problems with them unless it was from a long time ago?
by J and M Machine
Mon Mar 02, 2020 6:24 pm
Forum: General Discussion Forum
Topic: Transmission Disaster avoided
Replies: 29
Views: 9113

Re: Transmission Disaster avoided

I know it could get noisy with a drum change but I will hope for the best. I have at 1st glance what I think is a nice looking set of drums from a later model transmission can anyone tell me for shore I believe they are the same as the earlier low and reverse drums Or are there differences. The Low...
by J and M Machine
Sun Feb 09, 2020 12:23 pm
Forum: General Discussion Forum
Topic: Cracks between intake and exhaust
Replies: 12
Views: 5211

Re: Cracks between intake and exhaust

Those need to be repaired .
We don't see this crack to often but when we do it has to be repaired.
We use metal stitching and it is a seamless stress free repair.
With hardened valve seats installed it will never crack again in that area.
by J and M Machine
Thu Jan 30, 2020 5:12 pm
Forum: General Discussion Forum
Topic: Mag Particle Results - 1911 Crankshaft
Replies: 11
Views: 4945

Re: Mag Particle Results - 1911 Crankshaft

Was the crankshaft washed and all grease and debris removed before crack inspection?
You won't get a true reading if there is oil or dirt on the crank.

From what I see those are a result of the forging process as long as they are away from the radius of the crank.
by J and M Machine
Thu Jan 30, 2020 11:32 am
Forum: General Discussion Forum
Topic: Transmission autopsy: Bad driving?
Replies: 33
Views: 9359

Re: Transmission autopsy: Bad driving?

Even when I asked if the flywheel is toast I was pretty sure of the answer. Fortunately I have a few others, so finding a replacement should not be a problem. I also have several low drums, so it should also be no trouble finding a better gear. I believe this hogshead has a new low pedal notch and ...
by J and M Machine
Wed Jan 29, 2020 6:52 pm
Forum: General Discussion Forum
Topic: Transmission autopsy: Bad driving?
Replies: 33
Views: 9359

Re: Transmission autopsy: Bad driving?

Mr.Jelf the flywheel is toast. It's not uncommon to see bushings fused to the pins but another to see the pin moving! I stated earlier that all parts should be crack checked and flywheel is one of those parts. There is one triple gear pin hole that lines up with two other holes on the flywheel and t...
by J and M Machine
Wed Jan 29, 2020 9:30 am
Forum: General Discussion Forum
Topic: Transmission autopsy: Bad driving?
Replies: 33
Views: 9359

Re: Transmission autopsy: Bad driving?

To all concerned. Since majority of engine parts are reaching the 100 year old mark. Notwithstanding I would recommend any part in an engine to be "Magnafluxed" Crack inspected. As Mr.Jelf found out the hard way that, I would recommend it for any and all moving parts in a engine. That's why we ended...
by J and M Machine
Tue Jan 28, 2020 9:08 am
Forum: General Discussion Forum
Topic: Freeze Crack Repair
Replies: 34
Views: 10594

Re: Freeze Crack Repair

I found some water in my lifter galley, and an old repair in the water jacket between 2 & 3. The repair is oil-colored and lifting around the edges. I can't tell if its JB Weld or Marine Tex. One of the freeze plugs is covered in white epoxy; pretty sure that's Marine tex. it will be impossible to ...
by J and M Machine
Mon Nov 25, 2019 6:03 pm
Forum: General Discussion Forum
Topic: Loose rivets in brakedrum
Replies: 9
Views: 4126

Re: Loose rivets in brakedrum

One more thing, Since no one else has mentioned this. Since the brake drum is loose on the hub It would be wise to get the Brake drum crack inspected. Most often we see engines with good drums only to fail the crack inspection as the rivet holes are cracked around the rivets. Makes no sense to reriv...
by J and M Machine
Sun Nov 24, 2019 4:47 pm
Forum: General Discussion Forum
Topic: Loose rivets in brakedrum
Replies: 9
Views: 4126

Re: Loose rivets in brakedrum

Can I save this by trying to heat the rivets individually (somehow) and hammer them so when they cool it will be tight again? Or what does one do? (Apart from finding another) It is better to remove them and purchase replacements and then start over. The rivets along with the holes will be worn and ...
by J and M Machine
Sat Jul 27, 2019 9:09 am
Forum: General Discussion Forum
Topic: What have you done to your Model T in July?
Replies: 113
Views: 34594

Re: What have you done to your Model T in July?

Crank that we're grinding for a 1927 Model T.

IMG_3028.JPG
IMG_3027.JPG
by J and M Machine
Mon Jun 10, 2019 3:58 pm
Forum: General Discussion Forum
Topic: Triple gear weight
Replies: 9
Views: 4487

Re: Triple gear weight

Trying to balance it the way you are is a bit difficult.
If you have someone that can spin balance the flywheel you'll be in a lot better place.
Then you can contemplate machining weight of the triple gears.
IMG_3530.JPG
by J and M Machine
Thu May 23, 2019 3:03 pm
Forum: General Discussion Forum
Topic: magnaflux
Replies: 5
Views: 3271

Re: magnaflux

philip wrote:
Thu May 23, 2019 2:29 pm
has anyone had a block magna fluxed. lately if so what did it cost. philip
We typically charge $80.00 . In order for the magnaflux to work properly the block has to be perfectly clean,no paint,oil or dirt.
by J and M Machine
Fri May 17, 2019 6:17 pm
Forum: General Discussion Forum
Topic: High rpm vibration
Replies: 11
Views: 5310

Re: High rpm vibration

What you are explaining is typical of old engines not being balanced. We're so used to modern cars and forget what original cars are like. It can be corrected by balancing the internal engine parts. Rods,pistons crank, flywheel. Most often when the magnets come off others of random weights are re in...
by J and M Machine
Thu May 02, 2019 6:37 pm
Forum: General Discussion Forum
Topic: What are you doing with your "T" in May
Replies: 107
Views: 33025

Re: What are you doing with your "T" in May

We just this one cleaned.Believe it or not no cracks for a 1915 engine.
Surprisingly in good shape.