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The mkiv Supra Owners Club

Grinding noise when clutch is pressed - Not sure if twin plate clutch?


binfieldx

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Hi guys,

 

I wonder if someone who has heard a twin plate clutch or has experience with clutches could advise me. My import has a weird grinding noise when you press the clutch pedal in. Driving around in gears seems to be fine except sometimes when cold they are a bit sticky in 1st and reverse (search revealed this is common with the gearbox and could be because the gearbox is just cold?)

 

Anyway, when I bought my Supra I was advised it had an aftermarket 'strengthened' clutch installed but never was confirmed what exact clutch make/type. Everything else is near enough stock/minor BPU so I don't see why a twin plate clutch would be installed?

 

I've got a video of the sound if anyone could advise me?

 

http://vid108.photobucket.com/albums/n21/binnie_2006/20150422_122633_zpsdgessna7.mp4

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Mine makes a similar noise when the clutch is down mate, I have a triple plate clutch and it sounds like a bag of spanners! Prepare for lots of people who think they know better telling you your clutch is knackered! There is no riding the clutch on mine either, you get used to it, the noise is annoying though I agree! :)

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A quote from the OS Giken site which may put your mind at ease a little:

 

In regards to multi-plate clutch designs, all aftermarket manufacturers' multi-plate clutches will inherently emit a noise when the clutch is disengaged. This noise is emitted from the centerplate(s) vibrating against the cover posts. However, many competitors' clutches do not utilize the same strengthening processes during manufacturing as OS Giken, which will lead to increased material degradation over time. Because of this, the clutch noise will often become louder over time, as the centerplate(s) start to wear away and have more free-play within the housing. The OS design, coupled with the use of the most suitable materials and manufacturing processes, will minimize any system degradation and help to keep the clutch performing and sounding the same as when it was first installed. In fact, many OS Giken clutch users are proud to point out the signature noise emitted to anyone who asks, as it is a reminder that the car is equipped with one of the best performing and longest lasting clutches available!

 

Source:

 

http://www.osgiken.net/techcenter.php

 

:thumbs:

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If you decide to go for a stock clutch, or perhaps even one of my uprated stock clutches, you will also need a stock dual mass flywheel, flywheel bolts, and *PROBABLY* the stock pull type clutch release mechanism. But you will then have a totally quiet and civilised clutch ;)

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