What Clutch for 600hp

[rskwrx]

Hi Guys

 

I am getting close to starting the assembly on my engine but before i can assemble it i need to organize a clutch that can handle the power. and get balanced 

So trans is 6 speed engine is ej25.

 

Things to note 

Vehicle is street driven and will be a true 460 to 500whp to start off with as turbo will be he limiting factor no bull s*** dyno numbers and expect around 500 to 600 nm torque.

 

I have a couple of clutch's in mind 

 

1) ACS KSU23531-2A this clutch will do the job but the total weight of 16.5kg is putting me off 

2) Exedy FM022SD cant find weight on this and am worried the materiel the plate is made of will cause it to shudder when ya go to take off and is only rated to 600nm

 

Has any one got some other suggestions that is proven . I'm wanting to get something ordered on monday 

[Andy_Mac]

That is a similar range to what I'm aiming for. Surely you’ll be 600+nm with a turbo that'll get you that much power?

 

That exedy is probably the new version of what @Niran is selling.

Apparently they commonly rattle quite a bit while not engaged.

 

I'd tell you to go for a Tilton multiplate which is what mine will get once the new engine goes in but it is a bit more work so might not fit your timeline. Price is almost the same, sometimes better than the standard style multiplate clutches. 

[rskwrx]

Have come across this one but will set ya back around $4k

 

https://stmtuned.com/products/quarter-master-8-leg-clutch-kit-subaru-sti-2004-15-6-speed?variant=12589319913557

[Andy_Mac]

10 minutes ago, rskwrx said:

Have come across this one but will set ya back around $4k

 

https://stmtuned.com/products/quarter-master-8-leg-clutch-kit-subaru-sti-2004-15-6-speed?variant=12589319913557

 

What are you expecting to pay for the ACS or Exedy multiplate? They can be horrendously expensive unless someone can get you a decent deal

[rskwrx]

acs is 2000+gst and 150+gst freight not sure in exedy

 

[Andy_Mac]

Pretty good price really. Any idea on feel with the ACS one? The Tiltons feel as soft and smooth as stock even when holding ridiculous power apparently

[rskwrx]

No idea but with having both the plates organic and with a sprung center I would say it should feel like a standard one.

[Niran]

Twin organic and sprung will feel almost like a standard clutch. You won't be able to launch many times without burning the clutch though.

 

The exedy torque ratings are actually at the wheels. I found the catalogue and spoke to Exedy as well and have decided to use my exedy FM022SDL Compe D for around 670hp and 700nm at the wheels