Clutch 101 by Rocket
Hi, I find your post very interesting and it comes at a perfect timing. I am curently in the process of putting back together my build engine for turbo and I am at a stage when I am about to put my tranny back on to the engine. I was previously running a N/A setup, but knowing how important the clutch is I used the ACT extreme pressure plate with their street/strip disk. Well the pressure plate did keep up with my aggressive driving but the disk just like you have said was very close to failing. The splines were almost gone and one of the springs started coming out. Now for my question. I am running a Toda flywheels 8lbs with the ACT extreme pressure plate and just ordered an un-sprung organic copper 4 puc disk. Will this combination be good for my planed 320-350whp and what problems should I expec? Thanks, you are doing a great job.
[Modified by Screamer, 6:43 AM 7/30/2002]
[Modified by Screamer, 6:43 AM 7/30/2002]
I'm not sure on this.. but clutches are measured by the amount of torque they can handle..
I have the ACT XTR6 and the R6 will hold 400lbs torque, and i think the clutchmasters stage 3 held around 300lbs...
I was unsure about the R6 until I drove a hatch today at the shop I goto and after 5 minutes of driving it.. it really wasn't as bad as everyone claimed... I'm installing mine in the morning.. and we shall see how the xtreme pp is compared to the ACT hd pp that i drove today..
I have the ACT XTR6 and the R6 will hold 400lbs torque, and i think the clutchmasters stage 3 held around 300lbs...
I was unsure about the R6 until I drove a hatch today at the shop I goto and after 5 minutes of driving it.. it really wasn't as bad as everyone claimed... I'm installing mine in the morning.. and we shall see how the xtreme pp is compared to the ACT hd pp that i drove today..
Screamer, ACT disc will eat into your flywheel and your flywheel will have to go bye-bye.
Get a disc with Miba pads like Actions and you'll be cooo. Or you can step up and use Kevlar pucks.
[Modified by Rocket, 1:46 AM 7/30/2002]
Get a disc with Miba pads like Actions and you'll be cooo. Or you can step up and use Kevlar pucks.
[Modified by Rocket, 1:46 AM 7/30/2002]
Honda-Tech Member
Joined: Mar 2002
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From: Making 1/4mi beer runs in 11sec or less
What clutch do you recommend with an all motor integra which has 175whp and 138ft-lbs of torque? Daily driven, wont kill my flywheel.
What clutch do you recommend with an all motor integra which has 175whp and 138ft-lbs of torque? Daily driven, wont kill my flywheel.
I can say the Stage 1 KS is perfect for me.. Rocket helped me make a better choice on what I wanted.. and all I can say is that the KS is smooth like butter =P thanks robert
for you and all the guys at hondasaver
[Modified by IMALLBOB, 2:12 PM 8/9/2002]
for you and all the guys at hondasaver
[Modified by IMALLBOB, 2:12 PM 8/9/2002]
I would have to make the same bump...Rocket was more than helpful. He answered all my questions (no matter how stupid) and was very quick to send the clutch I ordered. I will definitely do business with them again!
GREAT!!!!....I made a post under the CRX/EF forum....heres the link
Thanks once again Rocket....
BTW, How long do you think this clutch will last with daily driving? i understand that there are many factors in this, but how long have you seen this setup last?
heres the page....
https://honda-tech.com/zerothread?id=257100
Thanks once again Rocket....
BTW, How long do you think this clutch will last with daily driving? i understand that there are many factors in this, but how long have you seen this setup last?
heres the page....
https://honda-tech.com/zerothread?id=257100
Rocket, I have a Clutch Specialties Unsprung 6 puck Dual Diaphram. It has alot of chatter when engaging. Does that create alot of wear on my tranny or is it just wearing on the clutch itself. Thank you for you time
Yep, I probably had not even close to 3k miles on the clutch specialties aluminum flywheel setup. The pads on the flywheel side were all worn down to the rivets already. My aluminum flywheel was just fubarred, very scarred up. Rockt has a picture of it so I hope he can post it up soon.
Yep, I probably had not even close to 3k miles on the clutch specialties aluminum flywheel setup. The pads on the flywheel side were all worn down to the rivets already. My aluminum flywheel was just fubarred, very scarred up. Rockt has a picture of it so I hope he can post it up soon.
Great post but I'm gonna stick with using OS Giken clutches until I get dumb enough to blow lots of loot on the ATS carbon clutch!
CLUTCH 101 cont....
PRESSURE PLATE ASSEMBLY
Here's the underside of a OEM P72(GSR) pressure plate

STRAPS
Here are the difference between the stock STRAPS and the STRAPS used by Action


Note that the Action STRAP is pre-bent. This prevents the STRAP from bending at the rivet. It is 100 times more likely to break if it bends at the rivet instead of bending at a pre-determined point away from the rivet. Also note the thickness of the STRAP. The material of steel is also superior.
Also not that the Action STRAP is shorter. This is important since the straps keep the friction ring centered in the cover. Stock straps some time can't keep the friction ring centered and on high HP turbo engines the friction ring tends to shif and hit the cover. Once this happens the clutch has a hard time releasing properly.
ACT also use their own STRAPS but I am not too impressed since they just use cut steel ribbon and do not have the pre-bent sections like Actions.
Here's a pic of what the stock STRAP looks like up close in the stock P72 pressure plate. Notice how the stock STRAP can bend at the rivet. This bending occurs when the STRAP is in compression (when you down shift). When you launch the straps are in tension (being pulled upon) there's no bending.
More to come.....
[Modified by Rocket, 11:23 AM 8/24/2002]
PRESSURE PLATE ASSEMBLY
Here's the underside of a OEM P72(GSR) pressure plate

STRAPS
Here are the difference between the stock STRAPS and the STRAPS used by Action


Note that the Action STRAP is pre-bent. This prevents the STRAP from bending at the rivet. It is 100 times more likely to break if it bends at the rivet instead of bending at a pre-determined point away from the rivet. Also note the thickness of the STRAP. The material of steel is also superior.
Also not that the Action STRAP is shorter. This is important since the straps keep the friction ring centered in the cover. Stock straps some time can't keep the friction ring centered and on high HP turbo engines the friction ring tends to shif and hit the cover. Once this happens the clutch has a hard time releasing properly.
ACT also use their own STRAPS but I am not too impressed since they just use cut steel ribbon and do not have the pre-bent sections like Actions.
Here's a pic of what the stock STRAP looks like up close in the stock P72 pressure plate. Notice how the stock STRAP can bend at the rivet. This bending occurs when the STRAP is in compression (when you down shift). When you launch the straps are in tension (being pulled upon) there's no bending.
More to come.....
[Modified by Rocket, 11:23 AM 8/24/2002]



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