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Old 07-22-2019, 09:37 PM   #1
Olson1288
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Join Date: Sep 2016
Drives: 2014 DGM BRZ Turbo
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Brand new clutch slipping under boost.

Hey guys. So it was a pretty unfortunate day


Clutch started slipping under boost today, first noticed it while I was on the highway, just cruising along in 6th sitting at around 3k rpms. Went to pass someone, only gave it about 1/2 throttle and noticed some minor slippage (rpms went roughly 300 above what they should of been and came back down when I let off the throttle.) I tested this a few times just to be sure I wasn't crazy or something but it definitely seems to be slipping slightly only under boost.


I have a South Bend Stage 3 Daily clutch with seriously like 1.5k miles on it.. it's basically brand new. I don't see how a brand new $800 clutch that was properly broken in (drove roughly 750 city miles before even going boosted) could be slipping already. Installation was done properly, no excessive grease or anything. All surfaces were thoroughly cleaned with brake cleaner prior to install. Brand new OEM flywheel installed along with the clutch.



I don't beat my car at all. This clutch has seen redline twice and that was only for tuning purposes. Only running 10 PSI so the boost isn't anything crazy, this clutch is rated for more then enough of the power going to it.


Basically I'm trying to see if I have any options prior to contacting South Bend and having to rip my tranny off again.. could this possibly be a slave cyclinder (clutch not completely disengaging) or something with the pedal? (roughly 1 inch free play before bite) Faulty clutch..? I'm more leaning towards the clutch itself though because I have no issues driving normally, it just starts to slip slightly only under boost.


Rip...
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