ACT in Huntington Beach, CA, can help you out. But are you sure that's the mod you need if your sig says "not enough power"?

 

I believe it is similar to a light weight flywheel, I'm not sure how much of a difference it makes though. I thought I saw then at www.rx7.com and they seemed outragously expensive to me. Not too high on my priorites right now.

Matt

 

It's actually ACPT not ACT. www.acpt.com

Our d/s is quite short so the weight savings isnt that huge. I never weighed mine but just holding it felt only a small weight savings. However, power tranmission seems to be smoother...or mebbe i'm just imagining it.

 

I thought MazdaSpeed offered one? Doesn't the RX-8 come with one?

 

there are a handful of japanese manufacturers who make them. Need a healthy wallet though.

 

It would probably be better for you to get a "normal" replacement. Mazdatrix sells ones with replaceable u-joints for less than the factory part.

-Max

 

A lot less drivetrain loss, gain some HP at the wheels there.

 

I don't think it significantly reduces the inertial losses. The stock part is not much heavier and the diameter is pretty small when compared to a flywheel for instance. It also spins slower than the flywheel since it is after the transmission, so that further reduces its inertial contribution relative to a flywheel. I am sure it makes some difference (it has to -- it is lighter), but it is unlikely to be a very significant difference. It should reduce drivetrain shock, but the CF driveshaft is not a big bang-for-the-buck mod, so it makes sense to put it off until you have most of the other mods that give a bigger boost for the money.

-Max

 

I was kidding, hence the smiley.

 

Forgot about that one. The stock driveshaft is so danged light I don't see spending all that dough. Unless you've got a tube frame carbon bodied endurance racer I see no need to spend that far for so little gain.