Just FYI...

What you're actually hearing (aka the rattle) is the center plate spinning freely when the clutch is disengaged. When you're in gear and your foot is pressing the clutch pedal down, the assembly is disengaged (uncompressed), when you are in gear and let up on the clutch pedal the clutch engages (compresses).



^^ Notice the plate between the friction surfaces. THAT'S the guy making the racket.

That being said, the sound emitted from each clutch depends on the car, engine/trans mounts, and anything else that can transmit vibration. I've heard twin discs that were virtually silent and others that were a bit chatty.

At the end of the day, it's normally a very mild noise that couldn't be heard over the radio, and doesn't indicate anything is wrong with the clutch, trans or installation.

:thumbsup:

-M

 

hey, just wondering where all you guys picked these up at. im getting one for my build, but the cheapest i can find is from rotary performance, for $1550, plus 40 for shipping.
wondering if anybody found a place out there cheaper than that.

 

That's not a bad price at all, and RP typically has parts in stock, ships fast, and offers very good product/tech support via phone. Price isn't everything, and supporting one of the good rotary shops in the US sure beats buying from some nameless place on ebay

 

We have it on sale for $1549.00 and we do have it in stock

http://banzai-racing.com/store/93+_r...dy_clutch.html

 

hooray! got it ordered today.
cant wait to get it installed. im looking forward to it.

 

Sorry to bump this thread but, if one does not want any clutch rattle which clutch would be the best alternative to Exedy Twin Plate for a 400-450whp car? But it also has to have reasonably light pedal feel etc.

When I started looking for a clutch first I was planning to buy ACT SS (zx3-hdss) after that decided to go with Exedy but now I am a little hesitant after watching the twin plate videos in youtube.

Also there are two types of Exedy Twin Plate. I believe the cheaper one is the one commonly used in RX7s. What are the advantages/disadvantages of the expensive one with lightweight centre?

http://www.banzai-racing.com/store/9...lutch_kit.html

 

We sell this alot and have used it on many single turbo cars. Plus is works well on the street.
http://www.rx7store.net/product_p/zx3-hdg6.htm

 

IIRC from what I've read in the forum in the past, the pedal feel is hard with puck clutches and hd pressure plates. I wonder if Exedy Hyper Single could handle the power and the miles......

 

The hyper single is a good clutch. The ACT that I mentioned is their sprung hub disk which is not hard feeling. Reason I suggested that is because its a lot more streetable than their solid puck disks which are stiff.

 

After many clutches in my previous Rx7's i bought the exedy d core carbon twin. Best clutch i have ever had please to drive compares to the sprung and solid pucks

 

i would not recommend a hyper single for a 400-450hp car.

 

IMO not getting an Exedy twin plate b/c of the clutch rattle is silly. I don't notice it at all 90% of the time and when I do notice it I barely hear it.

If you must get a single plate clutch for that power level the ACT extreme PP w/organic disc will handle it. I just hope your left leg has some strength to it

 

I may still buy the Exedy twin plate, I was just looking for an alternative. I know it sounds silly to make an issue of the rattle when you know it is the best clutch for the application but recently I had a change of plans and one of my goals now is to build a RX7 which is reasonably smooth and quiet.

 

If you are worried about clutch rattle then make sure you do not get the unsprung carbon version. The rattle is fairly loud. I think your best bet is to get the ceramatalic sprung hub version.


John

 

You could install the ACT ZX3-XTSS for that power level, it is the Extreme pressure plate with the Street/strip disc. For the best performance you will also want a lightweight flywheel, this is where the Exedy Twin starts making much more sense. If you think that you are eventually going to want 500whp then just go with the Exedy from the start.

The Lightweight Quickshift Center is not worth the extra money unless you have a dedicated racer you are trying to extract the last bit of performance from. This is obviously not the case if you are talking about building a quiet car. The clutch only rattles when the clutch pedal is depressed, so there is not any noise while driving.

 

No kidding on the legwork for the ACT extreem. This is what I have and it's a solid clutch, but it's very tiring if you're driving it in rush hour traffic on the 405, which I occasionally do.

However, I'm not certain that I'd recommend this setup for the hard driving 400+ club--it might be okay when the disc is new--but in my setup, if the tires bite hard while the engine is around max torque, the clutch will slip (power output is above ~400rwhp).

I think a twin disc with street/organic disks (if available) is what I will likely do when I replace the current clutch. Nice, easy, smooth street feel with a reasonable pedal.

 

I am not aware of any twin organic clutch setups for the RX7.

 

ok fellas, this is my story, bought a car with exedy twin disc clutch. started having probs lata, only to find out that the pressure plate failed, so i got a new one. then i had to buy new clutches. i used to enjoy the rattling sound of the twin disc until one time when i had to change gearbox, my mechanic used silicone to hold the ring and plates in one. ever since from that day to now. i never heard it rattle again. so that can be a cure for those who hate the ratling..