Exedy clutches?
Thread Starter
Le Mans Master
Joined: Oct 2006
Posts: 5,078
Likes: 19
From: Cumming, GA
Exedy clutches?
Just pulled the trigger on a GT04XD Twin Disk and wondered.....
For those of us that came from the import world we know this is a top quality clutch but I never hear of any Vette owners, let alone any LS-owners, running these clutches. Am I mistaken?
I'm making right at 500rwhp and use the car for all types of driving in addition to street driving. Anyone out there running an Exedy clutch of any stage? What are your thoughts?
For those of us that came from the import world we know this is a top quality clutch but I never hear of any Vette owners, let alone any LS-owners, running these clutches. Am I mistaken?
I'm making right at 500rwhp and use the car for all types of driving in addition to street driving. Anyone out there running an Exedy clutch of any stage? What are your thoughts?
Thread Starter
Le Mans Master
Joined: Oct 2006
Posts: 5,078
Likes: 19
From: Cumming, GA
Racer
Joined: Aug 2010
Posts: 327
Likes: 0
From: Texarkana AR
Honestly nor sure which kit, can't remember. It was supposed to hold over 700rw. It just started slipping last time at the track. Not sure what happened. Other than a few hard launches at the track I am very easy on a clutch, never slip it on take off and never powershift
Thread Starter
Le Mans Master
Joined: Oct 2006
Posts: 5,078
Likes: 19
From: Cumming, GA
Honestly nor sure which kit, can't remember. It was supposed to hold over 700rw. It just started slipping last time at the track. Not sure what happened. Other than a few hard launches at the track I am very easy on a clutch, never slip it on take off and never powershift
Premium Supporting Vendor
Joined: Oct 2005
Posts: 13,975
Likes: 980
From: Clinton Township MI
C7 of Year Finalist (track prepared) 2019
I have an Exedy in my car. The clutch has been great at 650hp. I smoked one once at the drag strip but it was my fault for a bogged burnout and hot-lapping without enough cool down. No chatter. Some neutral noise, but that varies car to car. It's not the clutch, it's the input shaft on the trans that magnifies the neutral noise.
Former Vendor
Joined: Aug 2005
Posts: 16,897
Likes: 412
From: Lewisville TX
St. Jude Donor '03-'04-'05-'06-'07-'08-'09-'10-'11-'12-'13
Very good clutch for the money.
They are a metallic material clutch so they do have an aggressive engagement point which will take some getting used to.
Great for bigger power cars on the street, autoX, and road racing. I would not use this clutch for drag racing as it just doesn't like to be slipped at all, which can lead to holding issues.
As it is a lighter clutch you will hear more backlash in the drivetrain as Jason said so keep that in mind with any lighter clutch out there.
They are a metallic material clutch so they do have an aggressive engagement point which will take some getting used to.
Great for bigger power cars on the street, autoX, and road racing. I would not use this clutch for drag racing as it just doesn't like to be slipped at all, which can lead to holding issues.
As it is a lighter clutch you will hear more backlash in the drivetrain as Jason said so keep that in mind with any lighter clutch out there.
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Thread Starter
Le Mans Master
Joined: Oct 2006
Posts: 5,078
Likes: 19
From: Cumming, GA
Great feedback from Jason and Anthony, thanks! 
The twin plate coming is @32lbs I believe so thats going to drop @15lbs from my current clutch setup. I'll weigh both to get a better weight savings. I can do with a bit of chatter as the car is cammed already so the extra noise will likely "blend in".
Interesting note on the drag application as I thought it'd be a good one for every type of racing. Guess I'll give it a try and see what happens.
The twin plate coming is @32lbs I believe so thats going to drop @15lbs from my current clutch setup. I'll weigh both to get a better weight savings. I can do with a bit of chatter as the car is cammed already so the extra noise will likely "blend in".
Interesting note on the drag application as I thought it'd be a good one for every type of racing. Guess I'll give it a try and see what happens.
Last edited by LEAVINU; May 10, 2011 at 03:29 PM.
Racer
Joined: Aug 2010
Posts: 327
Likes: 0
From: Texarkana AR
Anthony hit the nail on the head, not a good clutch for drag racing. And yes it does chatter if trying to take off smoothly from a red light that's why I wouldn't let it slip much and just let it engage
Thread Starter
Le Mans Master
Joined: Oct 2006
Posts: 5,078
Likes: 19
From: Cumming, GA
Former Vendor
Joined: Nov 2002
Posts: 4,003
Likes: 12
From: Toronto Ontario
We have used Exedys in the past and found that their HP ratings are over rated. Any new product Hp rating get decreased as customer complaints increase. Evan in the repair dept. Said he was waranting my Triple carbon clutch, but had none in stock. Waiting 3 month and they told us clutch ready to ship. Later that day Evan tells us Bernie the VP said no. Waited over 6 month to find out they lied. 
http://forums.corvetteforum.com/c5-f...r-service.html
Rob.
http://forums.corvetteforum.com/c5-f...r-service.html
Rob.
Last edited by Rob@ChampionMotors; May 10, 2011 at 10:16 PM.
Thread Starter
Le Mans Master
Joined: Oct 2006
Posts: 5,078
Likes: 19
From: Cumming, GA
We have used Exedys in the past and found that their HP ratings are over rated. Any new product Hp rating get decreased as customer complaints increase. Evan in the repair dept. Said he was waranting my Triple carbon clutch, but had none in stock. Waiting 3 month and they told us clutch ready to ship. Later that day Evan tells us Bernie the VP said no. Waited over 6 month to find out they lied.
http://forums.corvetteforum.com/c5-f...r-service.html
Rob.
http://forums.corvetteforum.com/c5-f...r-service.html
Rob.
Melting Slicks
Joined: Sep 2004
Posts: 3,439
Likes: 105
From: Northern Colorado
I owned one of these for 13K miles. Nice light weight clutch for DD and road race use and it held up fine to my power levels with this use.
On the drag strip.... with drag radials... I could get just one clean pass out of it before it began to slip. I had the NCCC national drag record at Bandimeir in fall 2009 but couldn't back it up...due to the clutch.
Car was making 570/530 at the wheels at the time.
Driveability... a REAL pain in the ***! After installing my RPS BC2, I never knew how bad the Exedy was. I never knew when it was going to grab. It was different everyday and the wife never wanted to drive the car.
If yours is a DD near stock power you might like it. for the price difference ( $300-500?) my vote is for the RPS BC2.
You have to ask yourself why some vendors do not push these clutchs like they used to and why some are selling their personal take outs. For my money and the R&R time for a clutch..I'd spend a little more and get an RPS.
On the drag strip.... with drag radials... I could get just one clean pass out of it before it began to slip.
I had the NCCC national drag record at Bandimeir in fall 2009 but couldn't back it up...due to the clutch.Car was making 570/530 at the wheels at the time.
Driveability... a REAL pain in the ***! After installing my RPS BC2, I never knew how bad the Exedy was. I never knew when it was going to grab. It was different everyday and the wife never wanted to drive the car.
If yours is a DD near stock power you might like it. for the price difference ( $300-500?) my vote is for the RPS BC2.
You have to ask yourself why some vendors do not push these clutchs like they used to and why some are selling their personal take outs. For my money and the R&R time for a clutch..I'd spend a little more and get an RPS.
Last edited by bowtiguy; May 11, 2011 at 12:12 PM.
Thread Starter
Le Mans Master
Joined: Oct 2006
Posts: 5,078
Likes: 19
From: Cumming, GA
That's what I have now.
Great feedback Bowti! The clutch is on the UPS truck and should be in my hands in a few hrs so I'm past the point of trying something else. I'll give it a run and see what happens. I do street the car primarily so hopefully I find it to be bearable so we'll see.
The weight is really what drove me to this clutch as you stated as well. I was considering the RPS Street Twin for a long time but came across this one and knew they worked well in the import world so figured I'd give it a try.
I'll post some pics and weigh it once I get it in hand. Have a 500mile break-in to perform before I go to the airstrip next Thursday to run some 600rwhp+ Nissan's.
I owned one of these for 13K miles. Nice light weight clutch for DD and road race use and it held up fine to my power levels with this use.
On the drag strip.... with drag radials... I could get just one clean pass out of it before it began to slip. I had the NCCC national drag record at Bandimeir in fall 2009 but couldn't back it up...due to the clutch.
Car was making 570/530 at the wheels at the time.
Driveability... a REAL pain in the ***! After installing my RPS BC2, I never knew how bad the Exedy was. I never knew when it was going to grab. It was different everyday and the wife never wanted to drive the car.
If yours is a DD near stock power you might like it. for the price difference ( $300-500?) my vote is for the RPS BC2.
You have to ask yourself why some vendors do not push these clutchs like they used to and why some are selling their personal take outs. For my money and the R&R time for a clutch..I'd spend a little more and get an RPS.
On the drag strip.... with drag radials... I could get just one clean pass out of it before it began to slip.
I had the NCCC national drag record at Bandimeir in fall 2009 but couldn't back it up...due to the clutch.Car was making 570/530 at the wheels at the time.
Driveability... a REAL pain in the ***! After installing my RPS BC2, I never knew how bad the Exedy was. I never knew when it was going to grab. It was different everyday and the wife never wanted to drive the car.
If yours is a DD near stock power you might like it. for the price difference ( $300-500?) my vote is for the RPS BC2.
You have to ask yourself why some vendors do not push these clutchs like they used to and why some are selling their personal take outs. For my money and the R&R time for a clutch..I'd spend a little more and get an RPS.
The weight is really what drove me to this clutch as you stated as well. I was considering the RPS Street Twin for a long time but came across this one and knew they worked well in the import world so figured I'd give it a try.
I'll post some pics and weigh it once I get it in hand. Have a 500mile break-in to perform before I go to the airstrip next Thursday to run some 600rwhp+ Nissan's.
Thread Starter
Le Mans Master
Joined: Oct 2006
Posts: 5,078
Likes: 19
From: Cumming, GA
UPS man dropped this off @5:30pm today. Sure looks pretty.
I was wrong on the weight though. Apparently the GT04SD comes in the low 30# range. The GT04XD has thicker plates and a beefier pressure plate spring so this is what it weighed in at (38.5lbs).
Anxious to see how it performs for me after reading all the experiences from others above.
I was wrong on the weight though. Apparently the GT04SD comes in the low 30# range. The GT04XD has thicker plates and a beefier pressure plate spring so this is what it weighed in at (38.5lbs).
Anxious to see how it performs for me after reading all the experiences from others above.
Thread Starter
Le Mans Master
Joined: Oct 2006
Posts: 5,078
Likes: 19
From: Cumming, GA
