What clutches are you 500ish whp guys running?
07-21-16, 12:35 AM
#1
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What clutches are you 500ish whp guys running?
Set up is supposed to make around 500 whp, just curious which clutch to get. Read up on some old out dated threads that didn't help much.
Thanks.
Thanks.
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07-24-16, 07:52 PM
#9
OS Giken twin disk. They drive incredibly well on the street and hold more than 500whp no problem. I've been using one that I found used installed on a JDM pullout 13BT. It's kind of noisy when you have the pedal down, but I kind of like that twin disk jingle jangle. Don't be afraid of buying a used one. They last a long time, so one with 3.5mm or more of clutch material is definitely worth installing. Btw, I had a ACT HD/6 puck with their Prolite flywheel and with the OEM FD flywheel and couldn't stand it! The engagement is so abrupt and the pedal is so stiff, I hated daily driving the car. Everyone who's driven my car loves the Giken
07-24-16, 09:29 PM
#11
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Someone should ask Howard if he is still happy with his Mcloed:
https://www.rx7club.com/20b-forum-95...ption-1091630/
https://www.rx7club.com/20b-forum-95...ption-1091630/
07-25-16, 09:03 AM
#14
My buddy runs a OS giken twin disc in his with an efr 8374 IWG. his makes some noise with the clutch pushed in.
I run a new Exedy twin disc semi metallic in mine with an EFR 8374 IWG and have run it to 18PSI+. no issues holding power.
I don't have any noise with my clutch pushed in except for start up, after start up no noise at all, whisper quiet and the clutch pedal isn't tough to push in, so I figure its not as hard on the clutch fork/slave/other components in the clutch assembly.
The only thing we both notice driving twin discs which isn't a huge deal is sometimes the clutch is a bit grabby at times, and other times it feels pretty normal. so we notice a little variation in how the clutch grabs at times.
I run a new Exedy twin disc semi metallic in mine with an EFR 8374 IWG and have run it to 18PSI+. no issues holding power.
I don't have any noise with my clutch pushed in except for start up, after start up no noise at all, whisper quiet and the clutch pedal isn't tough to push in, so I figure its not as hard on the clutch fork/slave/other components in the clutch assembly.
The only thing we both notice driving twin discs which isn't a huge deal is sometimes the clutch is a bit grabby at times, and other times it feels pretty normal. so we notice a little variation in how the clutch grabs at times.
07-25-16, 11:39 AM
#15
My buddy runs a OS giken twin disc in his with an efr 8374 IWG. his makes some noise with the clutch pushed in.
I run a new Exedy twin disc semi metallic in mine with an EFR 8374 IWG and have run it to 18PSI+. no issues holding power.
I don't have any noise with my clutch pushed in except for start up, after start up no noise at all, whisper quiet and the clutch pedal isn't tough to push in, so I figure its not as hard on the clutch fork/slave/other components in the clutch assembly.
The only thing we both notice driving twin discs which isn't a huge deal is sometimes the clutch is a bit grabby at times, and other times it feels pretty normal. so we notice a little variation in how the clutch grabs at times.
I run a new Exedy twin disc semi metallic in mine with an EFR 8374 IWG and have run it to 18PSI+. no issues holding power.
I don't have any noise with my clutch pushed in except for start up, after start up no noise at all, whisper quiet and the clutch pedal isn't tough to push in, so I figure its not as hard on the clutch fork/slave/other components in the clutch assembly.
The only thing we both notice driving twin discs which isn't a huge deal is sometimes the clutch is a bit grabby at times, and other times it feels pretty normal. so we notice a little variation in how the clutch grabs at times.
07-28-16, 03:01 PM
#23
That is why I ask.
From what I have read the carbon clutches will always slip when cold and the carbon disks wear quickly when they slip. You have to keep shifting to keep the heat in them.
On the circuit when you pull out of the pits of off the line you "blend" the clutch a bit too much slipping it a bit on the first couple shifts to put heat into the disks and then it will keep warm shifting in/out of corners.
On the street it will slip until you put heat into the disks and then they cool off if you are on the freeway. Get on the gas on the freeway and it will slip.
There was someone on this forum that tried using a Carbon clutch on the street...
Best contact the manufacturer and ask.
From what I have read the carbon clutches will always slip when cold and the carbon disks wear quickly when they slip. You have to keep shifting to keep the heat in them.
On the circuit when you pull out of the pits of off the line you "blend" the clutch a bit too much slipping it a bit on the first couple shifts to put heat into the disks and then it will keep warm shifting in/out of corners.
On the street it will slip until you put heat into the disks and then they cool off if you are on the freeway. Get on the gas on the freeway and it will slip.
There was someone on this forum that tried using a Carbon clutch on the street...
Best contact the manufacturer and ask.
07-28-16, 03:11 PM
#24
https://www.rx7club.com/3rd-generati...review-823401/
There you go.
It is the front disk that wears very quickly.
Exedy recommends swapping front/rear disks every couple events!
There you go.
It is the front disk that wears very quickly.
Exedy recommends swapping front/rear disks every couple events!
07-29-16, 12:00 PM
#25
mine's a sprung hub with larger diameter discs and higher load rating
Carbon-D Twin-ZM022SDMC1-13BT-REW - Exedy Clutch Europe
I've only put 35k or so miles in my car in 12 years so it should last a bit
I also got it brand new in original packaging for a good deal so I'll go with it, if I don't like it I'll sell it.
Torque at Flywheel: 480 lb-ft / 650 Nm
Torque at Wheels: 390 lb-ft / 520 Nm
Torque at Wheels: 390 lb-ft / 520 Nm
SUITABLE FOR
Street Modified / Track day / Circuit Racing / Time Attack
Street Modified / Track day / Circuit Racing / Time Attack
I've only put 35k or so miles in my car in 12 years so it should last a bit
I also got it brand new in original packaging for a good deal so I'll go with it, if I don't like it I'll sell it.
Last edited by neit_jnf; 07-29-16 at 12:46 PM.