Spec twin disc clutch issues - Pontiac GTO Forum
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post #1 of 4 (permalink) Old 05-05-2014, 01:36 PM Thread Starter
 
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Spec twin disc clutch issues

Have had a Spec twin disc clutch in my 2005 for a couple months now and it's got a couple quirks:
When starting up and pressing the clutch pedal I get a whirring noise that stops as soon as I put it in first, then I get a rubbing/squeaky noise as I let out the clutch pedal and a lot of shuddering until the pedal is fully released. Clutch fluid level is good and is a blue color; doesn't look dirty. I think it's slipping as my acceleration isn't as strong as when I first got the car back. Taking it back to tuner who did the work on it but has anybody else had these things happen? Had a new slave and remote bleeder also installed with the clutch but didn't change the master cylinder and have heard different opinions on changing it, some say yes, some say no.

1-7/8" ARH LTs, 3" Magnaflow exh.,Spec twin disc clutch, 402 stroker , Fast 102 w/Nick Williams TB, 1000 hp shaft & axles, cam, fuel & suspension upgrades. 500 rwhp, 484 rwtq
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post #2 of 4 (permalink) Old 05-05-2014, 09:43 PM
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The sound could be in the trans or bad pilot bearing. It's a good idea to replace the pilot when doing the clutch. A master won't do a thing for your issues. The shuddering is the clutch itself. Had a Spec 3 and let's just say I'm not a fan of Spec anymore.

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post #3 of 4 (permalink) Old 05-06-2014, 09:57 AM Thread Starter
 
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Originally Posted by svede1212 View Post
The sound could be in the trans or bad pilot bearing. It's a good idea to replace the pilot when doing the clutch. A master won't do a thing for your issues. The shuddering is the clutch itself. Had a Spec 3 and let's just say I'm not a fan of Spec anymore.
Thanks, hope I can still be a fan and they (tuners) solve my issues, sure would hate to see $1400 go down the drain.

1-7/8" ARH LTs, 3" Magnaflow exh.,Spec twin disc clutch, 402 stroker , Fast 102 w/Nick Williams TB, 1000 hp shaft & axles, cam, fuel & suspension upgrades. 500 rwhp, 484 rwtq
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post #4 of 4 (permalink) Old 05-06-2014, 12:15 PM
 
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Spec is known to chatter

2003 Corvette Z06 - MGW shifter, Corsa X pipe, Corsa Xtreme exhaust, Texas Speed long tubes w/o cats, PowerStop rotors/pads, Conti DWS tires, C6Z51 F&R sways, C5R headlights, tuned

04 GTO - sold
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