C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Another clutch, another problem

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Old Aug 18, 2016 | 09:45 PM
  #41  
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Originally Posted by yd328
Just a thought, could the od unit be slipping, chattering? It seems like you've went through the clutch pretty good. Maybe someone here with better knowledge of this trans can chime in. I would think the linkage would be a separate issue.

Gary
He may have a point, the car doesn't have 500 miles on the new clutch and your calling slip ????

As for the Shiftier if is bad they can be found
https://baltimore.craigslist.org/pts/5702426026.html
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Old Aug 18, 2016 | 10:00 PM
  #42  
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Originally Posted by s carter
He may have a point, the car doesn't have 500 miles on the new clutch and your calling slip ????

As for the Shiftier if is bad they can be found
https://baltimore.craigslist.org/pts/5702426026.html
Now there's a useful link! Thank you. I've never heard of OD slippage when in direct gear but I suppose it's possible based on the clutch-like friction plate design of the OD...

Definite slippage, though. 2nd gear, 2500rpm, cruising on a flat road at a constant speed with the clutch fully released and I can feel it slipping! Worse in other conditions as you'd expect. I don't believe the mechanic changed the fluid, so that will be something to investigate. He said it was a pain to do or something. That would be a simple fix if that's the underlying cause. I put my first miles on this clutch today, and after driving around a bit I determined that this can't be any kind of pre-break-in slippage. But the noise was coming from forward in the trans tunnel and correlated directly to whether or not my foot was on the clutch in neutral.

Originally Posted by AJ123
After going through all the b.s. you are going through. Got rid of the slave cylinder. Got rid of 4+3 put in a tremic tho 600
Put in a hydraulic throughout bearing 3/4 inch master cylinder a street strip clutch.
No problems

Prior in 3 years replaced 3 clutches. Put in New balanced flywheel on the 383 striker each time.

5 of my slave cylinders were damaged by over heating cats.

Good luck
I spent a lot of money wanted to blame mechanic "me"
The TKO600 seems like a fantastic transmission. However, it costs more than my car's worth and I'm afraid I have no pre-cats to cause such a problem. That is a lot of slave cylinders and flywheels, though!

If I ever go with a stroker kit, the Tremec seems like a pretty good option. But for now, a T5 would probably be beefy enough anyways.
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Old Aug 18, 2016 | 10:41 PM
  #43  
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Originally Posted by C4+3=/=C7
Now there's a useful link! Thank you. I've never heard of OD slippage when in direct gear but I suppose it's possible based on the clutch-like friction plate design of the OD...

Definite slippage, though. 2nd gear, 2500rpm, cruising on a flat road at a constant speed with the clutch fully released and I can feel it slipping! Worse in other conditions as you'd expect. I don't believe the mechanic changed the fluid, so that will be something to investigate. He said it was a pain to do or something. That would be a simple fix if that's the underlying cause. I put my first miles on this clutch today, and after driving around a bit I determined that this can't be any kind of pre-break-in slippage. But the noise was coming from forward in the trans tunnel and correlated directly to whether or not my foot was on the clutch in neutral.



The TKO600 seems like a fantastic transmission. However, it costs more than my car's worth and I'm afraid I have no pre-cats to cause such a problem. That is a lot of slave cylinders and flywheels, though!

If I ever go with a stroker kit, the Tremec seems like a pretty good option. But for now, a T5 would probably be beefy enough anyways.

For the expert on 4+3 Contact SK speed. They rebuild sell parts and gave me information on the phone no one else can.
They bought the last supply of the 4+3 .

I loved my 4+3 but the damage all the parts clutches and slave cylinders felt like could have bought 2 of the Tremec TKO 600.
The tko 600 with the hydraulic throwout bearing sitting on my tailgate was my answer.
If your paying someone to do this even more money.
My car is my money pit
Steve
Oh I paid $5000 for my vet. They wanted $9000 but the 4+3 Brock down on the test run. Worn out disk in over drive . We repaired them and some other parts. Had to drop transmissions and $200+ for parts.. A month later the clutch went out
Fixing electrical problems 5 years later.
Love my car.

T5 good transmissions

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Old Aug 21, 2016 | 10:08 AM
  #44  
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Originally Posted by Benny42
Has the flywheel been ground a lot? Every other part is new, the flywheel is the only piece of this puzzle we don't know about. If its too thin, (over ground) it is the answer.
I agree about the flywheel. Was it ever resurfaced? Could be it's not withing spec which would cause it to overheat and fry your clutch disc.
Also, did the shop check for evidence of any fluid contamination? Some overlook replacing the input shaft seal on the transmission. Just my $.02

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Old Aug 22, 2016 | 01:27 AM
  #45  
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Originally Posted by AJ123
For the expert on 4+3 Contact SK speed. They rebuild sell parts and gave me information on the phone no one else can.
They bought the last supply of the 4+3 .

I loved my 4+3 but the damage all the parts clutches and slave cylinders felt like could have bought 2 of the Tremec TKO 600.
The tko 600 with the hydraulic throwout bearing sitting on my tailgate was my answer.
If your paying someone to do this even more money.
My car is my money pit
Steve
Oh I paid $5000 for my vet. They wanted $9000 but the 4+3 Brock down on the test run. Worn out disk in over drive . We repaired them and some other parts. Had to drop transmissions and $200+ for parts.. A month later the clutch went out
Fixing electrical problems 5 years later.
Love my car.

T5 good transmissions
Good stuff man, I overpaid for my car but I love it as well. Problems are mostly just clutches, and the rest of the cost went into a total suspension rebuild that really just needed to be shocks, a steering rack, and alignment. Lesson learned there. I actually called up SK Speed a while back, and while I can't recall the name of the guy I talked to, he was friendly and knowledgeable. He said the Richmond 6 speed was a good option but no longer in production and that the TKO was another good transmission. If I can just get the clutch and shifter sorted out, I'll have a fun everyday car once again.

Originally Posted by Izzy Dizzy
I agree about the flywheel. Was it ever resurfaced? Could be it's not withing spec which would cause it to overheat and fry your clutch disc.
Also, did the shop check for evidence of any fluid contamination? Some overlook replacing the input shaft seal on the transmission. Just my $.02

I neglected to mention the flywheel; a new Sachs flywheel was installed along with the clutch this time around. As for fluid contamination, I asked about it and checked everything out but it seemed bone dry. If only it were something so much less elusive!
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Old Aug 22, 2016 | 01:37 AM
  #46  
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Sad to say it is just time and money
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