MCODECUDA
Well-Known Member
It might not be that easy depending upon which size bearing that is on the input shaft. Maybe a spacer from Brewer’s is in order.
4 speed clutch issues
- Thread starter moparfanUSA
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moparfanUSA
Well-Known Member
11" clutch with 143 teeth cast iron stock 69 bellhousing
padam
Well-Known Member
I believe the mopar performance chassis manual has a pretty good section dealing with the different combinations
moparfanUSA
Well-Known Member
The small block bearing retainer is 4.305" ( which is what is on the trans now) the big block one is 4.805". the alignment might be off.
BB BELLA
Well-Known Member
if the pp is applying the correct pressure and has free play on the bearing, the only other thing I can think is the motor mount on left side is done and when torquing the engine the z bar is being moved into a position thats applying pressure on the fork. grasping?
Daves69
Well-Known Member
It can be off what the bolt hole tolerance allows or less. It may be enough to cock the disc on the input shaft splines.
MCODECUDA
Well-Known Member
There is not a different diameter retainer for small block vs. big block. While it true that all small blocks used the smaller retainer the earlier transmissions 64-67 all used the small (4.354) diameter retainer whether it was a big or small block including the 440 and Hemi. The retainer size is sort of dependent upon the bellhousing used and the bearing diameter.
It’s strange. There have been suggestions here that the bell housing isn’t centered. Also comments that the small diameter front bearing retainer “isn’t the cause”. If the retainer is .500” to small the trans input shaft has no register to center it. The disc is most likely moving in an orbit compared to the crank. For sure it is contributing to the issue.
Doug
Doug
moparfanUSA
Well-Known Member
I agree with you Doug, I need to change it anyway to the right one. I am now going to check the runout on the bellhousing.
padam
Well-Known Member
That's what the wear pattern looks like.
dcala84141
Well-Known Member
What was the final outcome?
moparfanUSA
Well-Known Member
I checked the runout on the bell housing and it was fine. Turned out when I purchased the Trans at Carlisle, I did not check the outer bearing retainer. Turns out that the one on it was for a small block and a bit smaller in diameter than a big block and the tube was cracked about 3/4 of the way around. ( more than likely it was fine and cracked over time using it.) I purchased the big block one and installed it and it works great now, no slippage. As normal, it was the last possible thing we never thought of.
dcala84141
Well-Known Member
Good deal
That’s for the reply
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My "solution" to prevent clutch slipping was over the top, brought on by the existing clutch disc and pressure plate that came in the car slipping once fully released during a couple of different 1st gear launches on the street. It smelled like a hen house caught fire, or I had to keep my foot on the brakes for a mile.
So
I got a 2,950 pound pressure plate from McLeod. No slippage ever with the clutch fully engaged, but my left knee, even with the diaphragm style spring being "smoother" than the Borg and Beck, my left knee paid for the heavy pp, especially in stop and go traffic.
NOW I have replaced that BRUTE with a McLeod RXT dual disc clutch kit. Most cars that aren't going to do what I am would be fine with the RST dual disc but my HitMaster launch control and the 541 stroker are going to unleash hell when they launch my 3,800 pound B-Body "package" out of the hole so fast that it will be documented in legendary novels and limericks long after I'm taking my dirt nap...
So
I got a 2,950 pound pressure plate from McLeod. No slippage ever with the clutch fully engaged, but my left knee, even with the diaphragm style spring being "smoother" than the Borg and Beck, my left knee paid for the heavy pp, especially in stop and go traffic.
NOW I have replaced that BRUTE with a McLeod RXT dual disc clutch kit. Most cars that aren't going to do what I am would be fine with the RST dual disc but my HitMaster launch control and the 541 stroker are going to unleash hell when they launch my 3,800 pound B-Body "package" out of the hole so fast that it will be documented in legendary novels and limericks long after I'm taking my dirt nap...
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