Hardening the awsome THM200-4R (slideshow)

When I'm looking for a 200-4R to rebuild, do I need to be concerned about the condition of
the case ? Is there surfaces in the case that could be non-repairable? Or could I just go for the
lowest price, since I will be going completely thru the trans ?

Would there any advantage to buying a trans that works properly or don't worry ?
 
Here's what I did... I bought two of them. One junk and the other running... or so the fellow claimed. And he was honest, the trans was indeed running when I installed it, and could handle daily duties.

When I did the rebuild, I was happy to have a spare trans for parts.

Not much can go wrong with the case. The worm casting has to be in good shape. You are going to replace the bearings anyway. No obvious cracks. The steel will shift back and forth in the crenelations in the case, so they should be in good shape. They were fine in both cases of mine - even tho the not working one clearly suffered some catastrophic failure.

If I had to do it over, I'd do the same. One in decent working condition + another for parts: snap rings, return springs, various steels to get the clearances spot on, retaining pins...
 
Hmmm, in a pinch I would buy one to start. And disassemble. Need not be in working order. Even the non working trans could have easily been rebuilt. Again the mose snesitive part will be the worm casting - needs to be flat!
 
DorianL said:
Crap!!!! Forgot about the book! I need to get that too you.
Click to expand...
Down the hall and to your right!

I'm in no rush at this point, still in the fact finding stage. I've yet to purchase a trans, but there is a swap meet coming up in two weeks.

BTW, did you need any special tools ???
 
0-300 PSI pressure gauge, dial gauge, digital caliper, compressed air, feeler gauges to measure and use to "slip" seals in, vaseline + 1 inch brush that does not shed hairs, compressed air to test, one BF screw driver, a set of asorted quality snap ring pliers, needle nose visegrip pliers, lots 'n' lots of shop rags.

I used an engine stand to hold the trans upright for "filling." I supported the output shaft with magazines + a tin can cut open. Once you have the snap ring holding the other end of the output shaft in, you can remove the support.

Inch-pound torque wrench.

For the clutch packs, a specialized press is helpful, but not critical. I managed to compress the return spring with some sockets and 30 lbs barbell weights.
 
DORIANL you constantly impress me with both your willingness to tackle new things, and the obvious ability to gain the required skills to do things most guys never seem to acquire.
I doubt 1 person in 500 would or could do what youve done!

BTW LOTS of clear pictures of projects and the process you go thru are a huge help to those on the forum
 
DorianL said:
0-300 PSI pressure gauge, dial gauge, digital caliper, compressed air, feeler gauges to measure and use to "slip" seals in, vaseline + 1 inch brush that does not shed hairs, compressed air to test, one BF screw driver, a set of asorted quality snap ring pliers, needle nose visegrip pliers, lots 'n' lots of shop rags.
Got all of that except maybe a 300 psi gauge, will have to check.

I used an engine stand to hold the trans upright for "filling." I supported the output shaft with magazines + a tin can cut open. Once you have the snap ring holding the other end of the output shaft in, you can remove the support.
Got any pictures of engine stand holding the trans and the output shaft???

Inch-pound torque wrench.
That I might have to beg, borrow or steal.

For the clutch packs, a specialized press is helpful, but not critical. I managed to compress the return spring with some sockets and 30 lbs barbell weights.
Again, got any pictures of this ???
Click to expand...
 
I found this 200-4R for $35 on Craiglist. But I had to drive 50 minutes on 4 lane highway, 2 lane highway, gravel road, dirt driveway, over a creek and thru the trees to the Jeremy's shop. He said it had been there for 15 years and didn't seem like he was ever going to use it.

077-2T85OG1922 - It's from a 1985 Olds with a 307 CI motor.
 

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Needs a good cleaning! The only part of the rebuild I would farm out is the pump needs to be machined on a lathe to be parallel the the new hardened stator support. I just ordered a pump that was set up saved alot of grief.
 
larrym said:
Needs a good cleaning!
You bet, it's NOT going in the TBucket looking like that !

The only part of the rebuild I would farm out is the pump needs to be machined on a lathe to be parallel to the new hardened stator support. I just ordered a pump that was set up saved alot of grief.
Dully Noted ! Where did you order your pump from ?
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I got mine from Extreme Automatics Lonnie is a great guy helped develop a carbon band for the 200R4.

Good prices and stout products busy guy so waiting can be an issue.

http://www.extremeautomatics.com/

Extreme Automatics
7877 Beechmont Ave.
Cincinnati, OH. 45255
(513)898-0553
 
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Found it!
 
DorianL said:
Mail it to you...

It was in my my stand... go figure!
Click to expand...
YIPPEEE..........turning back flips !!!

EDIT: it was in my NIGHT stand. (bed side reading LOL)

PM me your snail-mailing again...
 
Glad I was planning on posting to this thread when I noticed your Edit. You sure are a sneaking kind of guy. :mrgreen: I will send you a PM with my address AGAIN, did you look in stand for my address it might be there also !!!

You probably have not heard about Bruce at PTS Xtreme. He was in a car accident in January this year, then in February he had heart failure. Seems he was only 60 minutes from his grave or as someone put it......his dirt bed. He seems to be extremely liked guy from the posts on the forum below.

The heart failure starts with post #25.
http://www.turbobuick.com/forums/transm ... treme.html


 
DorianL said:
Mail it to you...

It was in my stand... go figure!
Click to expand...
It's here!!!!

Perfect timing, I'm wanting to start getting my mind around this project and was wanting to start reading.



This is what I'm doing tonight........double back flips!!!




 

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