MTFCA Forum

Kohnke Rebabbitting

Pat TY, and I'm truly blessed to be able to be able to do this work again. It has been very trying catching up in the pile high of back log of bearings, and jobs with little to no information on who owns what, to what stage of the process they were in, to finding finished specs to get jobs finished....

Kohnke Rebabbitting

This is John Kohnke with Kohnke Rebabbitting Service, son of Herman Kohnke. I am working 24/7 getting jobs finished up that dad had here before he passed last April 2020. After I am done catching up with jobs, I will be taking new work. I was raised in the machine shop restoring Model T's, A's, and ...

Kohnke Rebabbitting

More pictures.

Kohnke Rebabbitting

Always pull the clutch spring it's easy. We use a small O. T. C. press, and push the spring support down, and knock the spring support pin out, takes about 30 seconds, with a nap, in between. Only use 1 bushing in the flywheel end, of the brake drum. The tail shaft should be line reamed, with the br...

Kohnke Rebabbitting

We have always used .015, .010 is to tight, .020 is over kill, and you can start to here it clunk.

.070 thousandths, just make sure somebody hasn't mixed older, and newer parts. See how many washers it has first.

Herm.

Kohnke Rebabbitting

I have seen this picture before with more group pictures of different poses of the same event, and yes, the train won the chicken contest. It had a little story, explaining the mishap.

Herm.

Kohnke Rebabbitting

Sealhttps://mtfca.com/phpBB3/download/file.php?mode=view&id=45984&sid=dd62cb3ad2a6b33d10608ec74363b3f6

Kohnke Rebabbitting

When the key area gets wore, inside the switch, the Key can jiggle out on it's own. Seen it happen about 3 times. The first Model T I learned to drive, when I was 14, had a Shoe lace through the eye of the key, and the other end, tied around the steering column. That didn't interfere with the runnin...

Kohnke Rebabbitting

The A/B cam crank center distance is 4.156/4.157". Dan's Model A, Center, to Center distance, is correct. As you can see, it is plus, or minus one thousandths. The Model T is 3.936-70 to 3.937-80. Never did I see those Spec's over one thousandths, and I know 4.155-00, has nothing to do with Ford Sp...

Kohnke Rebabbitting

This is the one, we have always used.

Herm.

Kohnke Rebabbitting

When I first saw that somebody was trying the 400 discs, I got a few, and machined some out. I put a set in one of my cars, and it worked perfectly, in all ways. So we used them in our motor building, Guessing about 175, T engines or a little more, that had 400 discs. I mentioned it to Birdhaven Aut...

Kohnke Rebabbitting

ON THE MODEL T THE ROD IS BOLTED TIGHT TO THE WRIST PIN AND THE PIN IS SNUG IN THE PISTON BOSS,THEREFOR EXCESS SIDE DRIFT CAN BE CAUSED BY ANY OF THOSE POINTS THAT HAVE BECOME WORN, WE USED TO CALL IT PISTON SLAP, THE-- T-- ENGINE NOT BEING THE QUIET KIND, YOU CANT HEAR THIS, IF YOU HAVE THE IRON P...

Kohnke Rebabbitting

Does anyone know what the rod side play should be on a rebuilt engine that has not been run much ? What is it suppose yo be originally? MEL. Rod should be, an 1.500, wide. Side clearance has always varied, from crank, to crank, on Model T's. At that, side play should should not be under .005, and n...

Kohnke Rebabbitting

Bump up now then.

Kohnke Rebabbitting

Bump up now, then.

Kohnke Rebabbitting

Did Ford workers scrutinize the fitment of thrust washers to this degree on the assembly line back then? New parts at the Factory should have been approximately, the same. So, if the clearance wasn't exactly right, the softer thrust washers would fix any thrust problems, shortly, like a babbitt rod...

Kohnke Rebabbitting

We set clearance at .010, you will find that .005, will be hard on some parts, especially when New ring gears are warped, as they are, when operating temperature, is reached. You don;t want the gears with hard spots, or clicking, in one spot, when rotated. Both ring, and pinion should be even, on bo...

Kohnke Rebabbitting

No. one picture, looks like it has been ground up to the Radius, and left a right angle. Closer pictures would take the guess work out of it. I was looking at No. 1 Pin, the closest Radius, to the front of the crank. Here was one of the Model T cranks that, Vern, at Arnold Motor, in Fort Dodge, Iowa...

Kohnke Rebabbitting

Blocks were not preheated as a step before babbitt. The pouring jig, that looked like Wilsons, but was not, was put on the block, and about a 3" torch, L.P. or Natural gas heated each shell. No, they never preheated the block, but did when they heated each shell, where the pouring jig was.

Herm.

Kohnke Rebabbitting

Top three caps shot. Tin Babbitt. Bottom cap, Rod, is lead babbitt, must have been replaced by it's self, one time. The shaft Blue looks like Prussian Blue to me, that was not taken off when fitting. If the shaft got that hot to turn it Blue, all the rods would have melted out. Normally, the babbitt...

Kohnke Rebabbitting

Ford warned about about using the side blocks in Trucks, that the frame twisting broke crankcase arms, and pan twisting from holding the arms to rigid. So, I have never used them on cars since I was in my teens. Don't believe it! Take your floor boards out, and install the side blocks and bolts, the...

Kohnke Rebabbitting

I sent one to Dan McEachern, to look at years ago. Maybe he will chime in here?

Herm.

Kohnke Rebabbitting

This is a Vulcan Rod lathe, later bought out by Storm, and then renamed the company, Storm Vulcan. The Vulcan Rod lathe is the same as the Storm Vulcan, except the Storm Vulcan has two free standing belt guards, one on each end. It will do babbitt rods, Bore wrist pin bushings in the Rods, and will ...

Kohnke Rebabbitting

OK, thanks, Alan, I don't have to do that any more either, I don't use Ford stock clutches.

Herm.

Kohnke Rebabbitting

The Driver side wheel, should always be raised. 1. easy to see, if the wheel stopped, when the brake lever is pulled. 2. if the right wheel is used, you have to walk around the car to see the wheel, in many cases, just because the hand brake lever is pulled, doesn't mean the wheel stopped. 3. The mo...

Kohnke Rebabbitting

Kohnke Rebabbitting

So Herm, if a guy had an early engine and wanted to keep all the visible stuff original to the year in question, you couldn't help him out? You would not build with an early pan? Question asked with the greatest respect, Bill I have never had that come up. Normally, after I explain the advantages o...

Kohnke Rebabbitting

Well Herm, USA Ford specs must differ from ours, decarboning about every 5000 miles and valve grind occasionally, a far cry from ripping into the engine every 3 months. Well, as usual, Kangaroo Dundee, you twisted what I said, and added your own crap. No where did I mention decarbonizing, and I lik...

Kohnke Rebabbitting

We use 26-27 pans, in all engines!

Herm.

Kohnke Rebabbitting

We never had a problems with all the Scat cranks we put in. About 78 to date.

The only thing that could make some off, is if the line bore Guy didn't know how to line bore, and get them always off center.

Herm.

Kohnke Rebabbitting

While the rear end housings, have to be straight, that is not the problem, this time. There are two companies that make the axle sleeves. One uses steel sheets that are .002, thinner then standard Ford, these are NOT usable, unless that is the kind of work, that will satisfy you. The axle movement w...

Kohnke Rebabbitting

1. Stainless steel valves should 0nly, and Always, be used in place of anything lesser. Ford recommended that valves should be reground every 3 months, with normal driving, every day. That was the cast iron head one. When a valve starts to burn, it is only the valve head that is affected, and as it ...

Kohnke Rebabbitting

dmdeaton wrote: ↑
Thu Dec 12, 2019 11:35 am
Bob said he is not making the the 2 wrench anymore

You don't want those anyway, you want the Bolt, Nut, and Lifter body kind.

Herm.

Kohnke Rebabbitting

In the course of rebuilding my engine and reworking the magnets I'd like to add a flywheel ring gear and notch the mag ring in the event that I want to add a starter at a later date. The flywheel seems to be turned to accept a ring gear, but in place of that ring gear is a steel ring with no teeth....

Kohnke Rebabbitting

dmdeaton wrote: ↑
Sat Dec 07, 2019 7:52 pm
So the lifters he sells are not the same as Snyder's ? They carry the 2 wrench lifters also.

Thanks, Keith.

I don't know which lifters Snyder sells, but Bob's lifters, are his own.

Herm.

Kohnke Rebabbitting

Bob's Antique Auto Parts, Quincy, Il.

Herm

Kohnke Rebabbitting

Ok, this is the way we do it. 1. Butt both ends. 2. The lifters are Bob's, the only good ones. Take all the bolts out, and nuts off, and either blast, or wire brush the threads. Make sure the nuts do not move the bolt when installed, that is, rotating freely, and assemble bolts. 3. Put a heavy greas...

Kohnke Rebabbitting

Ok so how do you keep the lifter from turning when you snug down the lock nut without using 3 wrenches? I have yet to see lifters that when down you could hold it with a wrench, maybe the flats were just peeking over the top. No you don't have to trim the lifter bosses, even if you know the secret ...

Kohnke Rebabbitting

Mark, I haven't seen your post , until today, I will let you know how we do it, tonight if I can. Pouring a 1922 Olds. today, just got done with a 1903 Curved Dash Olds, a few days ago.

Herm.

Kohnke Rebabbitting

I don't think that information is out there, no need for it other then the Ford Company, and Babbitters, like us. The caps were all bought from the Ford Co., already poured, as you know. I think we always used the standard thickness of 9/16, or .562-50, the same as the standard Ball cap hole. As lon...

Kohnke Rebabbitting

I give up, where is the Off Topic section?

Herm.

Kohnke Rebabbitting

Jim-B wrote: ↑
Fri Nov 15, 2019 2:54 pm
I am about to install a new ring gear on an old flywheel and presume the bevels on the teeth face to the bendix ? Does that sound right?
Thanks fo your thoughts.
Jim

Yup, to the rear of the car.

Herm

Kohnke Rebabbitting

The two T's are fine, but I had save the neighbors Brass Monkey.

Kohnke Rebabbitting

Pictures.

Kohnke Rebabbitting

Pictures.

Kohnke Rebabbitting

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Kohnke Rebabbitting

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Kohnke Rebabbitting

Waterbury, Simplicity, and Amco are the 3 machines that are alike, with a few small changes. The Simplicity, has the shortest Rod length holder. All oil groove linkage is the same. on all machines. All were made by AMCO, that is If remember right was the Automotive Machine Company. They made all kin...

Kohnke Rebabbitting

Darren is right, on his information. Also zinc was also tried in rod, and main bearings, in the war years, at least. If you mix zinc with Lead, or Tin base babbitt, both are junk after that, as it won''t stick to bearing shells correctly. I was told by the foundry, that when babbitt price went to 22...

Kohnke Rebabbitting

SOLD

Kohnke Rebabbitting

I just found, Bobs lifters.

Kohnke Rebabbitting

One more thing, you do NOT need 3 Wrenches, on lifters, with a lock nut.

Hertm.

Kohnke Rebabbitting

The lifter bolt shown in the picture, the slot will close up, or one side will brake off, NO FIX. The best are BOBs, In IL. They are made the way they should be. The bolts, nuts, and lifter body, laugh at a file. As always, any brand of lifter, should be butt. None are perfect. That is why some peop...

Kohnke Rebabbitting

Weaver Pictures.

There is also a small pipe that goes in the hole in the swing arm, I didn't need it, so I took it out, anp put it some where.

Herm

Kohnke Rebabbitting

Weaver Pictures.

Kohnke Rebabbitting

Best one made. Looks like the front mount, and oil pans are not there?

Herm.

Kohnke Rebabbitting

Some good ideas there Herm, what are you using for a plug in the drain? And are you taking width off the shoe? I milled of the cast iron, only, off both sides of the shoe, up to the lining. These shoes are crude, I won't be using them again. The drain plug is large zerk size. The plug was a Allen w...

Kohnke Rebabbitting

When cutting the tub off straight, I have always used a hack saw. Scribe your cutting line clear around the tube. Now, take the hack saw, and cut on your line, until the saw teeth just drop through to the inside of the inner, tube. Then move your saw forward, and do it again. You are only cutting ab...

Kohnke Rebabbitting

Those two piece brake shoes, to keep them working straight, and not coming off, i put put washers on the out side of the New Old Stock Brake Cams.

I also used NOS Hubs, in the New wheels.

Thanks,

Herm

Kohnke Rebabbitting

I have always used Dans Hubs, they are made right.

I use two set screws to keep the hub straight with the axle, and I tighten them, and use a lock nut. You do not want the hubs sliding, in, and out, as cornering, and ruts will do.

All that I have put in, no problems.

Herm.

Kohnke Rebabbitting

What is the preferred radius of a T crankshaft? Thanks for your time and help. Bob 903 824 1949 It has an 1/8th, .125 inch Radius. No bigger, or smaller. Rods, and mains should be cut that Diameter, also, or you will have a mating problem. A 2" Radius, should be closest to a 15" Diameter crank. Her.

Kohnke Rebabbitting

Through the years, I have found that more success is to be had in properly applying a specification to a given machining job than trying to guess what the confusing language was on a very old technology/drawing. If you doubt that, try applying old Trade Formulas used in watchmaking: One particular o...

Kohnke Rebabbitting

Herman, I also have a reamer that cuts to 0.003 clearance. I agree 0.003 is probably ok but not 0.002. But that still doesn't explain why Ford plainly said 0.002 running fit. Ford never uses this term anywhere else and None of the other Ford repair manuals even address this issue, only the Ford Ser...

Kohnke Rebabbitting

Well Glen, my new old stock tripple gears that came from Ford, already reamed, measure exactly, .680. The Wilson reamers are, an exact fit in the Ford reamed Tripple gear bushings. If Wilson screwed up, then Ford made the same mistake. Yes I agree .002 thousandths, is to small. Like ball caps, Ford ...

Kohnke Rebabbitting

Clearance for the triple gear bushing should be .003, that is what Ford reamed them at by, Micing New Old Stock, drums, and triple gears. Also, K. R. Wilson Reamers make a .680 hole for the pins. I have got one good used set of transmission Wilson reamers, and 2 sets of N.O.S., they all cut the same...

Kohnke Rebabbitting

Holes in the cap, or web, and a Dipper will do no good, unless the rod has a X Groove System. The holes in the web should be 3/16, and drilled on both sides of the web. The cap should be drilled with 3/16 hole, and not over 1/4. With out the X Groove, oil can not enter the bearing. It would be like ...

Kohnke Rebabbitting

Herm, thanks for the input. I will stick with grade 2. My book on rebuilding model A’s claims that Ford went to a cheaper lead base babbit because they thought the more robust, larger crankshaft did not require the more expensive grade. Maybe that is why the Ford name is on some lower grade babbit ...

Kohnke Rebabbitting

Pictures
The car is a 1908 Aplex, 2 Cycle, quite a Machine.

Kohnke Rebabbitting

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Kohnke Rebabbitting

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Kohnke Rebabbitting

Pictures.

Kohnke Rebabbitting

More Pictures.

Kohnke Rebabbitting

Herm, thank you, that is good information. Is the gold rod photo in your post as poured? Do you have a side-on photo? It's hard to compare it with the static-pour rod being from two different angles. I can see you had leakage with the static-pour rod. I used a combination of aluminium welding wire ...

Kohnke Rebabbitting

Just because babbitt has Ford in the babbitt, does not mean it came from the Ford Factory, it may be 86-7-7, but it didn't come from Ford. The babbitt in the Ford Garages, that we got with Wilson tools, that was Ford Babbitt, all had Ford Imprinted in the bar, and written out, Just like the Model T,...

Kohnke Rebabbitting

Erik Barrett wrote: ↑
Wed Aug 07, 2019 11:24 am
Herm, please elaborate. I’d like to learn more.

I will try to do it tonight, Mr. Erik, I am pouring in a 1903 Olds, today.

Herm.

Kohnke Rebabbitting

I pulled my 23 engine several years ago to replace transmission output shaft and the slipping transmission that I had put turbo 400 plates into. The turbo plates looked good, but about 1/3 of the Ford steel plates were cracked. I suspect due to heat from the slipping transmission. I replaced the pl...

Kohnke Rebabbitting

C to C, is 7 inches.

Width is 1.500.

The Radius is exactly 1/8th.

First rod, Gold, is our Centrifugally poured Rods

Herm.

Kohnke Rebabbitting

Erik Barrett wrote: ↑
Tue Aug 06, 2019 7:57 pm
I buy government grade #2 from United Metals. They publish their formulae online and it is what Ford used for model T’s.

Not the same as Fords, Erik.

Herm.

Kohnke Rebabbitting

Bottom line, is that with Jack Rabbit, you MUST put in a spring that meets or exceeds original pressure at original deflection. Neutral will be improved with either choice. Just don't expect that they will hold up or be MORE robust than a stock clutch." End Quote. It is NOT the Jack Rabbit Clutch th...

Kohnke Rebabbitting

Jerry VanOoteghem wrote: ↑
Sun Aug 04, 2019 2:42 pm
... but, you still need to check for twist.

And the off set. Best to check the rod, only for, twist, bend, and off set. Far to many maybes with piston added.

Herm.

Kohnke Rebabbitting

Only thing I can think of, is pistons touching Head, or Head Gasket.

Herm

Kohnke Rebabbitting

When I was 14, I put in my first peddle shafts. The brake peddle came loose, two times. That is two hogs head removals. I didn't like that. We had a can full, about a quart FORD can of peddle pins NOS, that were cold roll metal. Also we had a big box full of NOS peddle, and high speed shafts. Drilli...

Kohnke Rebabbitting

R. G's heads are flat on the inside, are all the same depth, from one end to the other. They will " PING ".

The Z head is built like the Waukesha, and Hebbie High Power.

Herm.

Kohnke Rebabbitting

It is not one of R. G's heads. It is a z head.

Herm.

Kohnke Rebabbitting

I found a fan bracket arm, with fan hub and blades, where the hub and bracket arm, were made of brass. I didn't see that they were brass until all the old grease got taken off.

Herm.

Kohnke Rebabbitting

We either would take the two down by removing metal from the two heaviest, or adding weight, by wire welding, filling the two holes, to the two lightest. Easy.

Herm.

Kohnke Rebabbitting

Pictures.

Kohnke Rebabbitting

It's funny how opinions go. I've never used anything. I just tap them in, and leave it at that! There are different years of engines that, when laying the seal in the front cover, the seal has a lot of slop, about .010 to much. When the cover is to big, we have always laid the seal on a anvil, clos...

Kohnke Rebabbitting

Pictures. Spindle top thrust bearings. No wear, turns easy.

Kohnke Rebabbitting

We have used 312 Ford Forged Pistons in the 26-27 T Blocks.

Herm.

Kohnke Rebabbitting

Jim, Sr. wrote: ↑
Fri May 17, 2019 10:21 pm
Put the bands in and close up the cover. Start the engine and let it idle for a while. With all that oil splashing around they will be soaked up quickly.

Agree!

Herm.

Kohnke Rebabbitting

We don't like to weld on a crank, but what is done is done. The bolts that come with the weights, we do not use, as we had a set come loose once. Nothing hurt, as they just slide back and fourth about 1/4 inch, but you can hear them. We have used about 175 sets, and never any trouble, I like them ve...

Kohnke Rebabbitting

We put grease Zerks in those, also.

Herm.

Kohnke Rebabbitting

We put grease in those, also.

Herm.

Kohnke Rebabbitting

We use 30 lb's torque.

Herm.

Kohnke Rebabbitting

Some repro bolts are hardened, and then ground, they have oil grooves, or use to.

The cheap ones were ground, and then hardened, have no oil grooves, but the bolts then are all warped, and they are NOT useable, at all, as they are junk.

Herm.

Kohnke Rebabbitting

We have always just drilled the center hole in the spindle, between the bushings, and put a small pound in grease zerk in it , and you can fill the cavity between the top, and bottom bushings, and will push gun grease out both top and bottom of the bushings. It lasts a whole lot longer then oil. We ...

Kohnke Rebabbitting

We have always used New lock washers.

Herm.

Kohnke Rebabbitting

I hope he didn't use the Battery, for a seat! The seat of his pants would have fell out! LOL, I have seen that happen, more then once.

Herm.

Kohnke Rebabbitting

Kenneth ; Here are some pictures of my home made Straightening table . Unfortunately I dont have the right location for the pan arms.IMGP0207.JPG I seen your ball cap area jig, when you listed it a long time ago. Simple, but very ingenious, and quite effective! I would never have thought of it. Tha...

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