My Dynosty Built 4.15L Stroker Twin PT67 is Completed... for now :D
ya i doubt you would want any of those on a street car. supra guys really like the tilton triple carbon, but realistically at that level, its all about compromises.
I think its the stupid light flywheel that the tilton uses that doesnt lend itself to very good street manners.
Pretty sure OS told Forged straight up that their 4 disc would not be good on the street. I would think that their triple would be the best of the rest.
Heck, since Aston's clutch was already used, a refresh would probably fix everything. I had my Spec refreshed when i rebuilt my motor, just for the reason that as he knows, you cant pull the tranny easily anymore.
I think its the stupid light flywheel that the tilton uses that doesnt lend itself to very good street manners.
Pretty sure OS told Forged straight up that their 4 disc would not be good on the street. I would think that their triple would be the best of the rest.
Heck, since Aston's clutch was already used, a refresh would probably fix everything. I had my Spec refreshed when i rebuilt my motor, just for the reason that as he knows, you cant pull the tranny easily anymore.
Hal does have the tilton carbon. When I was discussing options Hal told me the Tilton carbon was by far the best streetable large clutch. He absolutely hated my os giken twin disk both times I had it over for dynoing. Based on how shitty the twin felt the quad has to be stupid horrible on/off feeling.
I haven't driven many multidisk setups but this carbonetics triple is smooth as stock and 100x better than the os giken I had before. I can feather the clutch out and take off without giving it any gas at all on the start. I think the carbon disks make it smoother than the metallic for driving on the street.
Ashton, in my posted I mentioned Mike's power on the DJ. It was 1006hp on the DJ. Not sure what tq but I would assume somewhere in the high 700 maybe just at 800 but I wouldn't say much over 800tq with only 1006hp on the dj. Might have to search his thread for the tq to see what he hit.
Can you upgrade that exedy to a triple? New clutch plates should give you more power and then if you go up to a triple on top of that you should be able to hold more.
I haven't driven many multidisk setups but this carbonetics triple is smooth as stock and 100x better than the os giken I had before. I can feather the clutch out and take off without giving it any gas at all on the start. I think the carbon disks make it smoother than the metallic for driving on the street.
Ashton, in my posted I mentioned Mike's power on the DJ. It was 1006hp on the DJ. Not sure what tq but I would assume somewhere in the high 700 maybe just at 800 but I wouldn't say much over 800tq with only 1006hp on the dj. Might have to search his thread for the tq to see what he hit.
Can you upgrade that exedy to a triple? New clutch plates should give you more power and then if you go up to a triple on top of that you should be able to hold more.
I was the first with an RJM bracket and I use a carbonetics triple. Drives better than stock with the new bracket.
Congrats OP. Hope you enjoy it. Would love to see how your setup would perform if you upgraded to the new 6766 CEA turbos.
Last edited by RudeG_v2.0; Jul 10, 2012 at 09:09 PM.
os quad, carbonetics triple, and so far rich (str8) has pushed his spec twin up in the 900hp range.
It makes me wonder if there was enough break in time on aston's clutch. I know it was probably broken in on the dyno but how many miles do they really get on just a dyno break in? I would say a good 500 miles on city stop and go would be a solid break in and i see it very time consuming to get enough starts from a complete stop to get that clutch wear.
It makes me wonder if there was enough break in time on aston's clutch. I know it was probably broken in on the dyno but how many miles do they really get on just a dyno break in? I would say a good 500 miles on city stop and go would be a solid break in and i see it very time consuming to get enough starts from a complete stop to get that clutch wear.
Last edited by ace32x; Jul 10, 2012 at 10:09 PM.
My carbonetics triple has been holding just fine at 800+ but mine is also 5 years old, hasnt had a rebuild, and has had the power worked up on it over that time from 550 to 844whp.
I am switching to a RPS BC3 though for my new setup. We have used them on plenty of 1000+whp LSX based cars without and issue.
I am switching to a RPS BC3 though for my new setup. We have used them on plenty of 1000+whp LSX based cars without and issue.
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Hal does have the tilton carbon. When I was discussing options Hal told me the Tilton carbon was by far the best streetable large clutch. He absolutely hated my os giken twin disk both times I had it over for dynoing. Based on how shitty the twin felt the quad has to be stupid horrible on/off feeling.
I haven't driven many multidisk setups but this carbonetics triple is smooth as stock and 100x better than the os giken I had before. I can feather the clutch out and take off without giving it any gas at all on the start. I think the carbon disks make it smoother than the metallic for driving on the street.
Ashton, in my posted I mentioned Mike's power on the DJ. It was 1006hp on the DJ. Not sure what tq but I would assume somewhere in the high 700 maybe just at 800 but I wouldn't say much over 800tq with only 1006hp on the dj. Might have to search his thread for the tq to see what he hit.
Can you upgrade that exedy to a triple? New clutch plates should give you more power and then if you go up to a triple on top of that you should be able to hold more.
I haven't driven many multidisk setups but this carbonetics triple is smooth as stock and 100x better than the os giken I had before. I can feather the clutch out and take off without giving it any gas at all on the start. I think the carbon disks make it smoother than the metallic for driving on the street.
Ashton, in my posted I mentioned Mike's power on the DJ. It was 1006hp on the DJ. Not sure what tq but I would assume somewhere in the high 700 maybe just at 800 but I wouldn't say much over 800tq with only 1006hp on the dj. Might have to search his thread for the tq to see what he hit.
Can you upgrade that exedy to a triple? New clutch plates should give you more power and then if you go up to a triple on top of that you should be able to hold more.
Yeah I was just curious about the tq since that is the main killer of the clutches and I was making over 750 at only 26psi. I'll scroll through his thread and see what I can find.
The exedy that I have is a triple already. I'll have to give it a lot of thought about what I ant to do with the clutch. I have a pretty good while before it's even an option so I will see what I come up with.
I really appreciate all the info from everyone though.
Thanks man! Yeah, that would definitely be interesting. Maybe that and some better heads :P
Last edited by abushong504; Jul 11, 2012 at 07:20 AM.
you get an over and under drive with the gear vendors, so it essentially turns the 3 speed into a 6 speed. http://www.gearvendors.com/hrgm3s.html
Its expensive though, another 2500$ on top of maybe a $6000 built TH400.
The 6766s would prolly give a little more area under the curve, but thats another 2600$ in turbos plus any fab work.
SP was trying a set of 6765 on their shop car, and thats why the motor is in pieces now.
Its expensive though, another 2500$ on top of maybe a $6000 built TH400.
The 6766s would prolly give a little more area under the curve, but thats another 2600$ in turbos plus any fab work.
SP was trying a set of 6765 on their shop car, and thats why the motor is in pieces now.
And if you want an auto... i'll sell ya mine
it's lightly used and bolts RIGHT UP!
every take off 
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you get an over and under drive with the gear vendors, so it essentially turns the 3 speed into a 6 speed. http://www.gearvendors.com/hrgm3s.html
Its expensive though, another 2500$ on top of maybe a $6000 built TH400.
The 6766s would prolly give a little more area under the curve, but thats another 2600$ in turbos plus any fab work.
SP was trying a set of 6765 on their shop car, and thats why the motor is in pieces now.
Its expensive though, another 2500$ on top of maybe a $6000 built TH400.
The 6766s would prolly give a little more area under the curve, but thats another 2600$ in turbos plus any fab work.
SP was trying a set of 6765 on their shop car, and thats why the motor is in pieces now.
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their 1st fail was oil pump. 2nd time with the 67mm turbos, a rod bolt snapped.
That car is getting resleeved now
Ashton, I'd really think long and hard about how crazy of a clutch you want and where you will be doing your driving. Nothing will kill the joy of driving your car faster than a heavy clutch. Ask XKR, he never drove that G35 after it was done. Too much clutch.
That car is getting resleeved now
Ashton, I'd really think long and hard about how crazy of a clutch you want and where you will be doing your driving. Nothing will kill the joy of driving your car faster than a heavy clutch. Ask XKR, he never drove that G35 after it was done. Too much clutch.
Last edited by str8dum1; Jul 12, 2012 at 09:54 AM.
their 1st fail was oil pump. 2nd time with the 67mm turbos, a rod bolt snapped.
That car is getting resleeved now
Ashton, I'd really think long and hard about how crazy of a clutch you want and where you will be doing your driving. Nothing will kill the joy of driving your car faster than a heavy clutch. Ask XKR, he never drove that G35 after it was done. Too much clutch.
That car is getting resleeved now
Ashton, I'd really think long and hard about how crazy of a clutch you want and where you will be doing your driving. Nothing will kill the joy of driving your car faster than a heavy clutch. Ask XKR, he never drove that G35 after it was done. Too much clutch.
You guys will be surprised how much the RJM clutch pedal assembly makes a difference on rough clutches. An extra $150 and a couple hours of labor could bring the feel back closer to stock or at least very streetable.
yep, RJM will make any nasty clutch drivable. Mine feels better than the stock feeling and i have a carbonetics triple. Smooth engagement and when i first set it the pedal pressure was way lighter than stock but i didn't like it that light. I adjusted it to just slightly heavier than stock. Smooth as silk though.
what is the rough clutch you have tried it on?
it made a difference with my Spec ST, but that wasnt super hard to drive without it. Just annoying. Its nothing like a 4 disc OS.
it made a difference with my Spec ST, but that wasnt super hard to drive without it. Just annoying. Its nothing like a 4 disc OS.
Mine is just a JWT which doesn't really count (almost like stock anyways), but between the physics behind it + the difference I feel + what others with more aggressive clutches have stated it will help very much. Basically it changes the engagement window to however wide you want it and where you want it, and at the same time it reduces the amount of force needed.
Last edited by djamps; Jul 13, 2012 at 12:32 PM.