Ive searched but cant seem to find how much power the stock clutch will hold, my husband and I both got our EVOs tuned and dyno'd this weekend and his clutch ended up going out last night, presumably from not being able to hold the additional power. Does anyone know what the power limits are on the X clutch? His IX had an aftermarket ACT clutch so we cant use that as a baseline.

Thanks

 

I want to say I've read threads on here showing people with sub-400ft-lbs on the stock clutch. I guess it depends on how much wear the clutch has gotten from your husbands driving before the tune really.

 

416whp/374wtq, 46k miles, and my stock clutch is still holding the power. There are three main keys to my success I'd say:

1. removed the stock clutch slave restrictor pill at 3k miles
2. no drag launches
3. rev-match downshifting

When/if my stock clutch goes it's very possible I'll replace it with another stock clutch, or a very mild upgrade such as the Exedy Stage 1.

 

Clutch slave restrictor... que?

And yes not being a hooligan and actually knowing how to drive 5speed properly goes a long way in determining durability outside of holding capacity.

 

There is a little plastic pill inside the slave cylinder than adds in some slip and prevents the clutch from engaging quickly. During aggressive driving clutch wear will be accelerated so if you want your stock clutch (or any clutch for that matter) to last it's in your best interest to remove it sooner rather than later.

 

Gotcha S13s had a clutch dampener I guess its the same thing.

Thanks.

Is it a hard fix?

 

Does this apply to CT9A's?

 

No, search for my how-to.
Yup, exactly the same.

 

So I'm running 363hp and 375 ft lb tq, never launched the car, 11k miles, do you think I should be safe on the stock for awhile? It's not daily driven, maybe once a week and once a month for track events. Thankfully his IX's clutch went out just tooling around by the house but I'm just concerned about hitting the track next month and possibly killing it. I'll be running a differen map on the car for the track with less hp, tq and boost

 

With proper driving technique your clutch should have plenty of life left in it, but remove the above mention pill before hitting the track.

 

https://www.evolutionm.net/forums/ev...-complete.html

 

Would be the very first thing off my car...thats for sure!

 

My stock clutch started slipping on the dyno.. Was in the low 3's on torque and whp. Clutch had 75,000 miles on it. It's actually still on the car, had to save my money for the clutch upgrade and other costs.

You have to switch out the master cylinder too because it will go when you add an aftermarket clutch....I have a 2008, so maybe the 2011's don't have the same issue. Costly upgrade that i wasn't prepared for.

 

That sucks...I would hate to be forced into that position. I would much rather upgrade it because I want to not because the car would not function properly or would break without it.

 

How much free travel should I have in the clutch pedal? Seems as thou it has 2-3 inches before I have any pressure.

That normal?