MTFCA Forum

J and M Machine

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...

J and M Machine

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...

J and M Machine

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 ...

J and M Machine

...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...

J and M Machine

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...

J and M Machine

Bruce: You can have a look at these pictures as this was shipped to us from Calgary Canada and went both ways without damage.

J and M Machine

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...

J and M Machine

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.

J and M Machine

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 ...

J and M Machine

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.

J and M Machine

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

J and M Machine

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.

J and M Machine

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 ...

J and M Machine

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.

J and M Machine

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...

J and M Machine

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...

J and M Machine

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...

J and M Machine

Since you're both on the west coast i would try these guys.
http://www.antiqueautoranch.com/newwebs ... ranch.html

J and M Machine

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...

J and M Machine

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 .

J and M Machine

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...

J and M Machine

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...

J and M Machine

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?

J and M Machine

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...

J and M Machine

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.

J and M Machine

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.

J and M Machine

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 ...

J and M Machine

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...

J and M Machine

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...

J and M Machine

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 ...

J and M Machine

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...

J and M Machine

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 ...

J and M Machine

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

J and M Machine

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.

J and M Machine

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.

J and M Machine

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...

J and M Machine

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

MTFCA Forum

Search found 37 matches

Re: Milling Block Deck and Head

Re: Walden Worcester socket spanners.

Re: Crankshaft Balancing...

Re: Crankshaft Balancing...

Re: Crankshaft Balancing...

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

Re: Need Valve job on my 1925 T

Re: Unknown engine block

Re: Resurface mag fields

Re: Resurface mag fields

Resurface mag fields

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

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

Re: New triple gear pins?

Re: Should You Balance Transmission Drums

Re: low speed drum on trans rebuild

Re: Help In need of a pan streighting

Re: Instead of pouring Babbitt...

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Re: lighten flywheel

Re: Engine Rebuild Cost Estimate

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Re: Cracks between intake and exhaust

Re: Mag Particle Results - 1911 Crankshaft

Re: Transmission autopsy: Bad driving?

Re: Transmission autopsy: Bad driving?

Re: Transmission autopsy: Bad driving?

Re: Freeze Crack Repair

Re: Loose rivets in brakedrum

Re: Loose rivets in brakedrum

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

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Re: magnaflux

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