600+ trq capacity clutch selection

coltboostin · 03-31-2008, 10:06 AM

I searched-and didn't find much info on the South Bend clutches. I dont mind an ACT but with my, and many others issues with them recently, I'd like to stay away.

On paper-they look great. Anyone have any experience with them? I would need it to hold 600ish Ft lbs....

Considering my power level, I am also looking at twin discs. So far, the best option I have found was A Tilton with their 870hp cover, and rally discs. $800+shipping, and I will have to "Fuzion" it onto my flywheel.....

Any other options, opinions, or better pricing would be appreciated.

coryd · 03-31-2008, 10:22 AM

I would go twin disk man, you can get a quatermaster up or a few hundred more and i bet it will last longer, hold better, and your left leg wont be huge! lol

Modern Automotive Performance #::#DSM #::#Drivetrain #::#Clutch Kits #::#QuarterMaster #::#QuarterMaster Twin Disc 7.25" V-Drive Clutch / Flywheel (DSM)

QuarterMaster twin disc clutch kit- 90-99 6 bolt : JNZ Tuning

a review

JNZ Tuning

a the guy doin the review is well know dsmer

coltboostin · 03-31-2008, 10:36 AM

MAP used to be one of my customers-I will give him a ring.

If it was not clear-this is for my RX-7 (with 4G64). So, there is no clutch made for my application-hence the Fusion.

twicks69 · 03-31-2008, 10:37 AM

I would go with the Quarter Master 7.25" twin for your setup -- it is the best of ALL worlds (shifting, clutch disengagement, heat capacity, reduced MOI's, rebuildable, torque capacity, etc., reduced weight, price, etc.).

Actually, there are several threads concerning the South Bend Clutch Kevlar disk setup, and several on the twin disks.

600+tq is maxing out the SBC clutch, and it doesn't have the clutch disengagement quality of a twin disk.

Best bang-for-the-buck clutch -- Quarter Master 7.25" V-Drive twin disk.

Edit -- If you have more money to spend, then go for a 4.5" carbon-V triple disk, a 4G64 flexplate, and a custom drilled button flywheel with automatic flexplate bolts, and a QM radial TOB with a custom bracket. It will be the last clutch you will ever purchase, but you will have to pay with a fat wallet to get it.

Good luck,

coltboostin · 03-31-2008, 10:44 AM

Quote:

Originally Posted by twicks69

I would go with the Quarter Master 7.25" twin for your setup -- it is the best of ALL worlds (shifting, clutch disengagement, heat capacity, reduced MOI's, rebuildable, torque capacity, etc., reduced weight, price, etc.).

Actually, there are several threads concerning the South Bend Clutch Kevlar disk setup, and several on the twin disks.

600+tq is maxing out the SBC clutch, and it doesn't have the clutch disengagement quality of a twin disk.

Best bang-for-the-buck clutch -- Quarter Master 7.25" V-Drive twin disk.

Edit -- If you have more money to spend, then go for a 4.5" carbon-V triple disk, a 4G64 flexplate, and a custom drilled button flywheel with automatic flexplate bolts, and a QM radial TOB with a custom bracket. It will be the last clutch you will ever purchase, but you will have to pay with a fat wallet to get it.

Good luck,

Is the Tilton not rebuildable?

As far as the SB goes-I would just use their PP in conjunction with my ACT 6 puck disc.

I have a little over 3k into the car (car included) as it sits, with build motor, 600+whp, and ready to make 800ish. Money IS an issue, thats why Im hesitant on the twin disc, but I dont want to run into shifting issues again!

Thanks for the input on the tipple..

Street Surgeon · 03-31-2008, 10:49 AM

PTT twin disc w/the bronze sintered discs and call it a day. Who designed the quartermaster clutch? Why Steve Fox, the owner of PTT

twicks69 · 03-31-2008, 11:21 AM

Quote:

Originally Posted by Street Surgeon

PTT twin disc w/the bronze sintered discs and call it a day. Who designed the quartermaster clutch? Why Steve Fox, the owner of PTT

The PTT and the QM 7.25" V-Drive with the rally disks are nearly identical altogether, and share most of their parts.

I am also using the PTT chromoly flywheel with my QM clutch since that was the only one out 2 years ago when I did my twin-disk on the 7-bolt.

If you do go 7.25" twin-disk and use a custom flywheel or a PTT/QM modified flywheel, be sure to check the flywheel thickness at the flywheel mounting bolts -- the PTT flywheel is thinner than the old Fidanza I was running before, requiring a shorter flywheel bolt (use the automatic flex plate bolts -- they are the proper length).

Street Surgeon · 03-31-2008, 05:49 PM

Or use nordlock lockwashers so that 2.3l won't back out the flywheel bolts. Thus your bolts won't bottom out in the crank AND won't back themselves out