Chris Wilson Posted June 15, 2016 Share Posted June 15, 2016 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] Link to comment Share on other sites More sharing options...
Style Posted June 15, 2016 Share Posted June 15, 2016 Had mine for going on 2 years now and it's been great. Feels like stock Any idea on a ball park rating on these yet Chris? I'd be hoping for around 600lbs/ft out of my car one day so hopefully the clutch can keep up Link to comment Share on other sites More sharing options...
Chris Wilson Posted June 15, 2016 Author Share Posted June 15, 2016 To put one on a clutch dyno would cost me ££££££'s, so I have to be honest and just give a best estimate that they *SHOULD* handle about 575 ft lbs, and you'd *PROBABLY* put 600 ft lbs through a fresh one, but you are getting a bit iffy It's all down to reasonable clamping pressure, friction area and friction material. I wanted to keep stock drivability and good wear characteristics, at a reasonable cost. I could just stick a cerametallic driven disc in it and get loads more torque handling ability, but it would instantly become an awful clutch in traffic. Glad you like it, thanks for the kind comment. Link to comment Share on other sites More sharing options...
Jellybean Posted June 15, 2016 Share Posted June 15, 2016 My OsGiken Street Master Twin plate is rated to 575 ft lbs, and a hell of alot more expensive plus you do not have the dual mass flywheel resulting in a rattle at idle I completely forgot about these! Great work Chris! Link to comment Share on other sites More sharing options...
Recommended Posts