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Excedy Full Face Organic Power Rating

CEF33Y
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CEF33Y Experienced

CEF33Y

Posted
Posted

Hey guys, so basically I have a excedy heavy duty full face organic clutch, was in the donor car that I used when building my cefiro. Looked new at the time I put motor and box in, has handled a few drift days with no change to bite or pedal feel.

Rb20 was probably making at 150rwkw, on a good day.

Now I've done some power mods ( hypergear op6 highflow, and supporting mods) guessing result will be 200 to 240 rwkw.

Will this clutch at least handle the tune? Or should I upgrade before?

Anyone know the power rating of this clutch? Have searched but couldn't find much.

Cheers

simpletool Mentor

simpletool

Posted
Posted

Clutches don't have power ratings. They have suggested torque ratings. One rating is static, other is dynamic. ie. static friction vs dynamic friction.

In saying that a decent quality organic clutch is probably your best choice. It should handle ~550Nm static (depends on material and pressure plate). So 250rwkw is a rough upper limit. A borderline application also depends HEAVILY on driving style and rear end grip (tyres/suspension).

Depends on:

Organic material type/quality

Pressure plate clamp

Other factors:

Backing plate thickness/cushioning plate/torsion spring strength

Get some popcorn ready >> http://www.exedyusa.com/multimedia/specsheets/ClutchFundamentals.pdf

  • Like 1
sweefu Mentor

sweefu

Posted
Posted

Clutches don't have power ratings. They have suggested torque ratings. One rating is static, other is dynamic. ie. static friction vs dynamic friction.

In saying that a decent quality organic clutch is probably your best choice. It should handle ~550Nm static (depends on material and pressure plate). So 250rwkw is a rough upper limit. A borderline application also depends HEAVILY on driving style and rear end grip (tyres/suspension).

Depends on:

Organic material type/quality

Pressure plate clamp

Other factors:

Backing plate thickness/cushioning plate/torsion spring strength

Get some popcorn ready >> http://www.exedyusa.com/multimedia/specsheets/ClutchFundamentals.pdf

This guy knows what's up.

I have the Exedy Sports Organic HD (full face, silver pressure plate made in Japan, not pink centre from China)

I wore it pretty badly in 3 track days with a stock SR20DET. Friends of mine have used this clutch with 220kw+ and had no troubles for 12 - 18 months worth of track days.

A lot depends on driving style too, and as above, suspension, tyres, diff etc.

simpletool Mentor

simpletool

Posted
Posted

This guy knows what's up.

I have the Exedy Sports Organic HD (full face, silver pressure plate made in Japan, not pink centre from China)

I wore it pretty badly in 3 track days with a stock SR20DET. Friends of mine have used this clutch with 220kw+ and had no troubles for 12 - 18 months worth of track days.

A lot depends on driving style too, and as above, suspension, tyres, diff etc.

I've got the R32 GTR sports organic SO SO7172 (?) on my RB25. 230rwkw. Been using it for 130,000km with various power levels and a couple of track days.

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