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Clutch Hisses

GTAAAH
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GTAAAH Mentor

GTAAAH

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Yo, i have a cushioned button clutch i got about 1000 km's ago, it's quiet when i'm not moving but under load like driving slowly in 1st gear it hisses reasonably loudly.. is the "cushion" an air cushion or something? i dunno if that makes much sense.. or can sum1 elaborate a bit on what a cushioned button clutch is?

It is pretty heavy but it isn't straight on and off and u can ease it on pretty easily

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  • 1 month later...
GTAAAH Mentor

GTAAAH

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I've been looking around and really have no idea what it could be, the list of problems it could be include:

- Could just be that it is a hydraulic clutch noise

- Possible issues with the slave cylinder

- bad clutch release bearing or clutch fork problem

- IF the vehicle used a clutch vacuum assist, the booster being bad.

- a main input shaft bearing, mainshaft bearings

anyone got any suggestion on which is most likely on a gtr with a cushioned button clutch with 2000km's on it, no launches? i only really notice the noise a little bit on idle, more when i'm parking and need to ride the clutch a lil to get into my spot.. or is it normal?

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GTAAAH Mentor

GTAAAH

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Just noticed that the clutch fork boot (which had been split but was still holding up alright) has been completely removed when it was getting the rebuild.. i was reading earlier about some high frequency vibration noise in that area, and i have a replacement boot, will try to fix it tonight provided i can figure out how to get the fork off so i can slip the boot on

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(B1) MR_fanny Grand Master

(B1) MR_fanny

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my cushion clutch hisses only durring riding of the clutch but goes a way once engaged. there may still be a hissing but my solid short shifter transfers noise incabin thats louder. I do know that with a lightened flywheel combo the gearbox makes a "gara,gara" rattling sound on low revs in first.

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GTAAAH Mentor

GTAAAH

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ahh it does? ok i was hoping someone would say that, but then after reading about everyone elses hiss (mind you on stock clutches on shiet cars) i started to get paranoid hehe. I was just messing around with it and it's only while riding it hisses, so seems that checks out ok, cheers for that dude

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