mrx

Hallo,

even if not a 100% FI related topic, but i hope here are some ppl around which have experience.

I'am currently in the process of a new clutch selection. Currently i have a 6-puck Sprung Competition Stage 4 clutch. But it has a very harsh engagement which makes the car not very easy to drive. On the track it's ok, but on the road it's annoying.

I've read a bit and there are certain variables when it comes to clutches.

- Type of material
- Number of Pad's (friction area)
- Pressure applied to the disc

How did these parameters interact when it comes to Tq-capacity of a clutch in relation to clutch engagement.

Maybe someone can suggest a good clutch which has a "mostly stock engagement" and can hold up at least 300lb/ft's of engine Tq.

Thanks

NotARaCist

iTrader: (1)

For what engine?

mrx

B16A1 Cable clutch

NotARaCist

iTrader: (1)

That's...a lot of torque out of a 1.6L. I have a hard time believing that, especially since your thread in the Drag section says you have 350 WHP. Have a dyno graph to back it up? I'm not trying to be a dick - it actually does matter, especially since you want something close to OEM for driveability.

NotARaCist

iTrader: (1)

ACT XTSS, Clutch Masters FX300/FX350, and South Bend Clutch stage 2 "Drag Series" (part # K08017-HD-DXD) are three that are rated for 300+ torque and still have full-faced discs, but they all have very stiff pressure plates. With a more realistic torque number, I could probably find you more options.

mrx

The Power/Tq numbers in my other thread are BHP, not WHP... just forgot to mention it because they are much more common in europe other then in the states.

My current state is 370bhp but thats not exactly where i want to end, so i'am searching for a clutch which has a bit of buffer left.

mrx

Thanks so far, this are some options a also came across.
Just took a look for my last dyno numbers and recalc'ed them for you:

it's 321whp and 231lb/ft but as saied, there will be some more boost come next year.

welfarepc

Look into a Kevlar clutch disc.

mrx

Thanks, i will.
Can someone explain how the companies come up with their Tq-Ratings?
For example the ACT XTSS which is rated to 320lb/ft and it saies in the spec's that it can handle 72% over OEM, but when you look at the OEM Tq of the B18A for example and multiply that by 1,72 you come nowhere near 320lbft?!?

Just as an example, but it's a bit confusing when comparing different companies products.

NotARaCist

iTrader: (1)

I always ignore the % numbers. You don't test things in percentages, you test them in values. Either it holds 320 torque, or it doesn't.