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The mkiv Supra Owners Club

clutch slippng


Guest smithy

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hi all :)

 

The clutch on my tt import supra is slipping the revs are going up and its not moving anywhere do i need to get a complete clutch kit or could i just change the pressure plate?

 

thanks smithy

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OEM Clutch parts aren't that expensive(bar the flywheel which is ^^). You will definitely need the clutch plate itself, new bearings and i would recommend the 2 snap rings. Pressure Plate could be worn too. 350-400 sounds about right for all of the parts(including pressure plate) you need for that job. :)

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is an oem clutch the best to put in or it would it be better to get a aftermarket clutch?

 

 

A stock clutch will be the smoothest and quietest option, they are good for around 400hp.

 

If the clutch is slipping as much as you say ie. revving in gear with no drive, you may well have also damaged the flywheel.

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I replaced the clutch plate recently but it's still chattering at low pressure after 1500 miles so I'm thinking the flywheel will need replacing at some point. Not sure if the chattering will damage the clutch plate over time so I may have to replace the whole lot at what appears to be about £800. Ouch!

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What kind of power are you running? Until BPU the stock one should be ok. As an alternative you could use Chris Wilson's clutch which is based on the stock parts or a single plate TRD one.

 

its running about 350bhp

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A stock clutch will be the smoothest and quietest option, they are good for around 400hp.

 

If the clutch is slipping as much as you say ie. revving in gear with no drive, you may well have also damaged the flywheel.

 

its only be doing it couple of days i stopped driving it!

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Available now: Uprated MKIV TT clutches.

 

 

I use the stock, brand new driven plate, as it is correctly

balanced, doesn't judder and will hold all but mega torque

highly modded engines or cars used for drag racing.

I modify a stock brand new cover to give more clamping force.

The reason I tooled up to do these is some of the aftermarket

US clutches I have fitted SEEM to be built from used cover

assemblies with reground friction surfaces, and a stronger

spring. I have had hellish trouble getting these to fully

release, because due to this seemingly thinner cast iron

friction face, the geometry of the clutch goes to pot, and

being a pull type clutch (the hydraulics pull the bearing

away from the engine, rather than the more normal push type)

it is a lot harder to effect a cure.

 

For 455 pounds plus VAT , you get a brand new driven

plate, a brand new modded cover, and a brand new release

bearing. I would rather fit myself so any complaints are down

to me, I see a lot of clutches damaged by people without the right gear

(a ramp and transmission jack, plus correct circlip tools and fitment)

or clutches fitted to patently *uggered flywheels. I will do a supply

only if you feel competent to tackle the job or are using a bona fide garage to

fit the clutch

 

 

Toyota use a dual mass flywheel (the flywheel is in 2 parts, an inner and

outer assembly, damped in the middle) which is now showing signs

of wear causing a lot of rattle when idling or on very light

throttle openings. For God knows what reason they are charging

about £400 + VAT for a new one, they look more like they should be

over 500 to me, but don't say anything :-) The very similar LUK dual

mass flywheel on Maseratis is nearly £1000 + VAT.... So if the flywheels

old enough or abused enough to be scored it should be replaced.

 

Fitting by myself will cost £175 + VAT.

 

Reply privately if interested please. [email protected]

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