Hi guys,
clutch needs replacing (slipping pretty bad) and was wondering which clutch was better, ACT of centerfuge?

Thanks
Snake Eyes<l><l>

 

Twin plate RE Amemiya

 

Get a stock clutch!

 

why a stock clutch? I was just looking at a act or a RB

 

You want the clutch to be the weakest link in the chain....

 

Yeah if your clutch is the weakest link, then it will slip. If your tranny is the weakest link then it will break, if your u-joints are the weakest link they will break, if your differential ,etc., etc. I dont think that a little 12A tranny could take the super fast engagement of a high performance clutch.

 

With my almost total stock car(minor exhaust mod) I can smoke the tires to redline with a 3500 drop and spin the tires in second gear. This is with a stock clutch with 90,000 miles on it. How can a performace clutch add a lot more stress.

 

If you did your clutch drop with a performance clutch, the force being generated by the motor, when you let go of the pedal, will be transfered much more quickly to the rest of the drivetrain, and consequintly that much more violently. A clutch should be chosen to hold the power availiable, period.

Streetracer, you are the example we needed, you can do all that fancy tire smoking with a STOCK clutch with 90k on it, Why in the world would you need a performance clutch?

 

If your clutch is slipping, get one that doesn't. All this about leaving your clutch as the weak link is bullshit. Learn how to treat your car properly rather than building a safety zone around it for your poor driving skills or practices.

 

No need to became angry. But I see your point, drive well and you wont screw up you system. But 12A trannys have been known to have snapped gears fairly easily. Think of it like this: If the clutch engages in half the time the original clutch engaged in, it exerts twice the force on the tranny and u-joints. I could show you the math, but it is pretty straightforward if you think about it. I would get a TII tranny before getting anything stronger than a stage 1 30% increase clutch. Some guys use a stock clutch with a hery heavy pressure plate. Then you get nice smooth engagement on the street and a little leeway to protect the tranny, and you will still have great holding capacity for high hp.

 

yeap neanderthol I'm running a heavy heavy pressure plate and the stock USED clutch and it's holding up really well. I have a semi soft engagement and the pedal feels solid like it should but I'm not worried about the tranny as I try to baby it. I do break the tires loose on second at will.

...not third anymore...

 

did somebody say witch?????

 

I was thinking of a performace clutch because I am planning on a streetport, webers and RB exhaust.

 

Well, I was thinking that a performance clutch was would be better for the car since I will be in autocrosses when it is in and not slipping.


Snake Eyes<l><l>

 

The usage of the car does not change the physics. If you autocross or whatever, you are going to have a narrower window of acceptable forces without breakage. These are not race trannys, and are known for their chipped synchros. If you did a build up on the tranny , you might be ok, but the forces have to go somewhere. You have to be a better driver then so as not to toast something. You will note that the best LSD rear end to get used is out of an automatic. The auto prevents quick lock ups and does not abuse the rear end.

 

Well snake eyes, I think your best bet is to put in a turbo II tranny or a gsl-se tranny. Those are very strong compared to the 12A's tranny. There was a thread put up recently on how to do it. Pics and everything. Good luck!

 

The GSL-SE tranny is the same unit as the 12A tranny - there's no strength benefit to it.

 

In fact all of the NA trannies are the same strength, unless you go back to the old ribcase style 4-speeds.

 

Really? wow I read that a company put a gsl-se tranny in their turbo 1st gen. Mariah motorsports I think. I figure they did it cause it was stronger. Maybe they just liked the gearing or something.