When pushing more HP - impact on drivetrain?

[Escy]

Not that long before I upgraded to a 6 speed but I used the car hard, launches, etc and it had an LSD so was putting all the power down. My clutch was an Audi RS4 one (engine was an Audi S4 2.7 bi turbo)

[Qingdao]

Originally Posted by Escy

Not that long before I upgraded to a 6 speed but I used the car hard, launches, etc and it had an LSD so was putting all the power down. My clutch was an Audi RS4 one (engine was an Audi S4 2.7 bi turbo)

I'm using an Audi A4 clutch on my 5 speed, too. No clutch, trans, or shaft issues thus far. Open diff and regular street tires. No nasty launches or hard shifts; that doesn't mean I don't give it the berries every now and again.

[ike84]

Originally Posted by Qingdao

I'm using an Audi A4 clutch on my 5 speed, too. No clutch, trans, or shaft issues thus far. Open diff and regular street tires. No nasty launches or hard shifts; that doesn't mean I don't give it the berries every now and again.

Aren't they the same clutch? If the a4 is a late 90s fwd version, thats the exact same tranny as the 5 speed.

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[Qingdao]

Originally Posted by ike84

Aren't they the same clutch? If the a4 is a late 90s fwd version, thats the exact same tranny as the 5 speed.

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Its a LOT bigger. More contact area. The 5 speed boxster clutch is dual mass and that apparently means you get a lot less gripping surface.

[ike84]

Originally Posted by Qingdao

Its a LOT bigger. More contact area. The 5 speed boxster clutch is dual mass and that apparently means you get a lot less gripping surface.

I'm super confused here and also extremely interested. Our flywheels are dual mass, the clutch disk is single mass.

Do you have the PN for the clutch you're talking about? I would love to see it.

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[Qingdao]

Originally Posted by ike84

I'm super confused here and also extremely interested. Our flywheels are dual mass, the clutch disk is single mass.

Do you have the PN for the clutch you're talking about? I would love to see it.

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Already tossed everything; so no pics..

The Audi clutch gripping surface has a smaller ID; but the same OD. The dual mass clutch has workings and weird stuff happening on the inside of the clutch so the ID is greater and the OD is the same. IDK what the weird duel mass trickery was; didn't take a hard look at it just went strait to the scrap yard. The dual mass clutch's band was about 3cm thick; I'd say the Audi disk is about 4 or 4.5 cm thick.


EDIT:


Damn I was close guessing their thickness... This guy is selling A4 clutches and has a side by side picture.

https://www.europeanpartssolution.com/porsche-986-987-boxster-cayman-5speed-upgraded-clutch-kit

[ike84]

Originally Posted by Qingdao

Already tossed everything; so no pics..



The Audi clutch gripping surface has a smaller ID; but the same OD. The dual mass clutch has workings and weird stuff happening on the inside of the clutch so the ID is greater and the OD is the same. IDK what the weird duel mass trickery was; didn't take a hard look at it just went strait to the scrap yard. The dual mass clutch's band was about 3cm thick; I'd say the Audi disk is about 4 or 4.5 cm thick.

That's really interesting. The only time I've heard of using a sprung clutch disk on these cars was with a single mass lightweight flywheel. This wasn't a popular update for many because that DMF serves as the engines harmonic balancer and deleting it may or may not cause crankshaft failure.

What'd you say killed your original m96 motor?

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