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Anyone with a coppermix competition twin plate holding 500kw?

burn4005

By burn4005,
in Engines & Forced Induction

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burn4005 Proficient

burn4005

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Anyone with a coppermix competition twin plate holding 500kw?

As per title, got a new efr8374 on an rb26 and my current normal coppermix twin Is worn out and no longer doing its job. Will a competition version hold 500awkw?

 

That's really the most it's going to see with this turbo and its such a friendly twin plate I'm inclined to stay using one.

Piggaz Grand Master

Piggaz

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Intune and Nismo3.2ish both killed C spec coppermixes with the 8374. However, one is a 3.0 and the other is a 3.2. Pete's (the 3.2) nearly lasted a month.

It's more the torque that kills clutches. You may be right behind a 2.6L.

JustinP Mentor

JustinP

Posted
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Damn, I hope the Coppermix Twinplate Competition that I just installed in my 8374 equiped R34 will hold then! It's just a 86.5mm/standard stoke Neo though, and RWD, so here's hoping...

burn4005 Proficient

burn4005

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Great You can be the guinea pig then! But being rwd you should be fine. They kind of act like a drive line fuse, you don't have that luxury with AWD.

Thanks for the feedback guys.

If 3.2ish managed to get one to hold on his car for a while before killing it, a 2.6 with 15-20% less torque should probably last.

Youre right. The question should  I have been who's making  900+ NM peak torque  a on a coppermix but most people only know their power figure. The plan is to keep the midrange torque In check to keep the gearbox and shafts alive anyway, and I have learnt the hard way that a super strong overkill clutch (RPS carbon) just breaks other stuff in a Evo.

Will have a look at the r3c, but the fact the centre isnt sprung is worrying drivability wise.

 

Cheers.

Edited by burn4005
Piggaz Grand Master

Piggaz

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I think the 2.6/2.8 guys should be ok. I ran a coppermix for 10 years (35,000 kms), power ranging from 370 rwkw to 470rwkw/800 nm of twist. 

I pulled it out only after munching an OS gear set. The plates were just over half worn. It never slipped, never misbehaved and never refreshed or rebuilt. This was with OVER 350 big RPM launches under its belt.

To replace it went an OS88 and an R3C. The driveability is on par to the coppermix. It's definitely NOT a lightswitch it's just the pickup point is lower compared to the high pickup of the coppermix. Apparently there was a design change with the OS R series of clutches at some point, not exactly sure when it was though. Some time before October 2014.

 

Piggaz Grand Master

Piggaz

Posted
Posted

Having said that, GTR_JOEY ran 430 rwkw on a 2.6L using the NON C spec coppermix for years and never had an issue. Only 30 ish wkw difference between the above mentioned 3.0 and 3.2, torque difference is a lot more.

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