Drivetrain Questions and info regarding transmissions, clutches, etc.

HELP, new JWT clutch slipping?!

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Old Oct 30, 2012 | 10:37 PM
  #1  
nadjkovic's Avatar
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From: TX/VA/GA
Thumbs down HELP, new JWT clutch slipping?!

HELP. <-- seems to be the only way to get anyone's attention around here.. no one really responded when I originally had it replaced 3 months ago, here:
https://g35driver.com/forums/drivetr...-overhaul.html

Garrett's Transmission in Griffin, GA installed my JWT Clutch/Flywheel combo early July of this year. Replacement master and slave cylinders were also installed, and I got the recommended parts from IPP as well (pivot ball, nismo bearing, ss clutch line, etc.) in hopes that I would avoid transmission work for a while.

That being said, my original issue was my clutch slipping, and guess what? IT'S SLIPPING ALL OVER AGAIN. In a matter of a week of barely any driving, it went from barely slipping in 6th when accelerating to now letting me IDLE in first gear.

Who's to blame? JWT? Garrett's Transmission? JWT says the clutch is out of warranty (only 90 days apparently). Has anyone had manufacture related issues like this? Anyone know of a reputable Atlanta area G/Z shop I should've went to? I'm IRATE. I just dropped $1000+ on everything, and It wasn't easy spending money to come by. Now my daily driver is out of commission for God knows how long AGAIN.

FYI I tried the clutch pedal adjustment, no help, clutch is toast.
 
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Old Oct 31, 2012 | 03:51 AM
  #2  
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Most likely this problem is due to installation error, however, in some rare cases it is possible the friction material can separate from the center portion of the clutch disc.

Perhaps they used too much grease and it got flung onto the friction surfaces? Maybe the clutch wore out unevenly due to runout or misalignment?

Either way, looks like the tranny is going to have to come down to take a look... how is the transmission input shaft seal? How is the rear main seal?
 
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Old Dec 11, 2012 | 03:08 PM
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I was just about to order that same setup today, but now im not so ready to pull the trigger.. were you able to find the cause of the problem?
 
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Old Jan 31, 2013 | 02:49 PM
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Originally Posted by bythabay
Most likely this problem is due to installation error, however, in some rare cases it is possible the friction material can separate from the center portion of the clutch disc.

Perhaps they used too much grease and it got flung onto the friction surfaces? Maybe the clutch wore out unevenly due to runout or misalignment?

Either way, looks like the tranny is going to have to come down to take a look... how is the transmission input shaft seal? How is the rear main seal?
Originally Posted by rmacinni
I was just about to order that same setup today, but now im not so ready to pull the trigger.. were you able to find the cause of the problem?
I had the clutch & flywheel RE-replaced by Z1 Motorsports themselves, with their own "mild performance" clutch & lightweight flywheel. I'm no longer a fan of JWT, and the customer service through Z1 was exceptional. If you need a new clutch setup, GO THROUGH THEM!
 
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