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Thread: Clutch for 700-900rwhp?

  1. #76
    Ex-hardtopper Boostrush's Avatar
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    Quote Originally Posted by A80Girl View Post
    I was just about to say the same thing. They are advertising it as being extremely versatile and able to withstand quite a beating.

    My HPF Feramic has stood up to everything that was thrown at it, whether it was street, dyno or dragstrip and as stated in my earlier post, the car was a 10 sec. car trapping in the mid to high 130's.

    I've heard stories about the material eating away at the flywheel (stock) until the point where it would fuse itself to it, but with all things in life, it's happened to some and not to others.

    btw - kirk, I have the ACT 3500lb pressure plate, and I think it's the 3550 lb pressure plate for the bronze kit!!
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  3. #77
    Fun-Sized A80Girl's Avatar
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    Quote Originally Posted by Boostrush View Post
    My HPF Feramic has stood up to everything that was thrown at it, whether it was street, dyno or dragstrip and as stated in my earlier post, the car was a 10 sec. car trapping in the mid to high 130's.

    I've heard stories about the material eating away at the flywheel (stock) until the point where it would fuse itself to it, but with all things in life, it's happened to some and not to others.

    btw - kirk, I have the ACT 3500lb pressure plate, and I think it's the 3550 lb pressure plate for the bronze kit!!

    I think you just convinced him. lol.

    Your right, there are pros and cons as well as risks involved with everything so its ultimately a matter of preference. Like everyone though, I want the overall best for my application. That will obviously differ amongst everyone. The HPF actually sounds great. I'm looking forward to trying it on his car if he does get it and make my decision from there. He'll be the Guinea Pig
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  4. #78
    Twin Meister
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    Quote Originally Posted by A80Girl View Post
    Ken, thank you so much for your input. So far, the OS Giken seems to be appealing to me the more I read about it...or rather the more you elaborate on it. How slippable is it? On a scale of 1-10 (1 being lightest, 10 being heaviest) how would you rate the pedal pressure compared to stock? Stock being a 1, of course. I don't plan on making over 900hp so I would assume the triple plate would be fine for me. However I'm a weakling and definitely dont want to wear myself out with a stiff pedal pressure or look like a newb whilst trying to slip it out and end up jerking like crazy lol.
    Ohhh....this is where it gets dicey....recommending clutches to other members. I've had an OS Giken clutch in my black car for about 10 years, and now one in my red car for the last 6-months or so, maybe more. It's the only aftermarket clutch I've had installed in my personal Supras, although I've driven most everything else discussed in this thread except the Tilton and the HPF offerings. So what I'm saying is, I'm pretty used to the OS Gken offerings, so neither clutch, particularly my quad disc, seems overly stiff to me. This is to be expected, given my long-term ownership of the triple and quad in my black car.

    That said, the owner of my body shop was re-tinting my windows and he remarked about how stiff the clutch was when moving the car into a work bay, and he's a racer and time attack specialist. Another Supra-owning friend drove the OS Giken/HKS 2835 twin car of a mutual friend of ours, and he thought the clutch was very stiff as well. His frame of reference was stock or stock-like clutches. So, I guess what I'm saying is, the uninitiated will probably think the OS clutches are overly stiff. I agree with 8Wasabe, my HKS triple-owning friend, that the Giken triple has stiffer pedal pressure than the HKS triple, but better engagement characteristics lower to the floor, IMO. If you were going for 700 whp, I would recommend the OS Giken twin-plate without too much reservation or the Blitz Twin-Active, for sure. If your power needs exceed the capabilities of these twin-plates, I'm not sure I would recommend the OS triple, given the fact you want something close to stock pedal pressure.

    I would rate the OS twin-plate at #3 and the OS triple and quad at about a 5-6. I'm not sure how valuable these ratings are, though, for the reasons noted above and the reasons highlighted by 8Wasabe. A guy (or gal) can't give up too early on these clutches. Once you get the hang of them, things get much better. After once getting stuck in my black car on a 13-mile upgrade (Cajon Pass on I-15 in SoCali) in 1-5 mph bumper-to-bumper because of a vehicle fire, I felt afterwards like I had joined the mult-plate clutch owners Hall of Fame, LOL.

    I know this is long-winded but, in your case, I would recommend you limit your power to 700 wheel and opt for either the Giken or Blitz twin-plates. As I said earlier, the Blitz is the ultimate twin-plate DD clutch, IMO. Good luck.

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  6. #79
    Fastest Factory Auto 1320ms's Avatar
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    this should be a sticky

  7. #80
    1100+rwhp member suprareyrey's Avatar
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    I have a rps c/c and I love it drives like butter. No complaints here.

  8. #81
    Now...Whitesupra94
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    Quote Originally Posted by A80Girl View Post
    I think you just convinced him. lol.

    Your right, there are pros and cons as well as risks involved with everything so its ultimately a matter of preference. Like everyone though, I want the overall best for my application. That will obviously differ amongst everyone. The HPF actually sounds great. I'm looking forward to trying it on his car if he does get it and make my decision from there. He'll be the Guinea Pig

    The thing with the Feramic is, that once you learn the engagement point you don't keep letting the clutch out. That horsepower freaks summary of a 1" engagement is spot on. Once you feel it grab basically just hold your foot there and ever so slightly move it out, if that. You'll do it wrong every once in a while if your not paying attention and buck the car.


    It's not something you're going to be speed shifting with on a road course or something though. But I find for drag racing if I stand on it I can still shift pretty quick.

  9. #82
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    Anyone have any input about southend clutches as well?? Last I hard they are a great single disc clutch.

  10. #83
    Now...Whitesupra94
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    Quote Originally Posted by D'Bollocks View Post
    Anyone have any input about southend clutches as well?? Last I hard they are a great single disc clutch.

    A local guy around here has put numerous 11 sec passes on his and got into 10.9 at 132. I'm not sure theyre rated to hold the horsepower he's requiring though. Once my feramic goes out, I plan on trying that clutch. It's lighter than the HPF (mainly because I m pretty sure it utilizes the stock PP)

  11. #84
    SupraForums Member TwinsTurbo97's Avatar
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    Quote Originally Posted by Nick 95 6sp View Post
    It's not at all for the drag racing crowd, but with all this clutch talk I can't resist mentioning that I got my HKS triple over 7 years ago, and while I don't drag race it I have done quite a few roadcourse track days plus over 45,000 miles of street driving on it and it's still working just fine. After a bit of a learning curve on the pedal modulation, now I find it relatively easy for any kind of street driving, even starting up hills now is no sweat. Not to mention it will hold over 1000whp/tq. It's a quality piece and designed/built like industrial artwork. If/when this thing ever wears out in my lifetime, I'm doing it again. The newer versions of these with the plate springs supposedly make less plate rattle and are somewhat easier to modulate.

    PS: ...plus it has about one-half the pedal effort of the stock clutch and the design is inherently NOT prone to causing excessive thrust bearing loads/crankwalk.

    Quote Originally Posted by KenHenderson View Post

    HKS twin-disc GD clutch and HKS triple-plate clutches. Both will hold the power, especially the triple-plate. You will hear a lot of horror stories about drivability and the HKS triple, but with the slave cylinder mod, I believe it to be completely manageable. Several of my friends have this clutch as well (with the slave cylinder mod). It's never going to be a clutch you do not have to think about, especially when at a stoplight on an incline, but a lot depends on how a guy uses his car. I have no direct, or indirect, experience with the HKS twin. Nick956spd, 8Wasabe and Latteboost on this board have years and years of HKS triple experience. I'd PM them for a more informed assessment of the HKS triple than I can provide here even with my decent seat time with this clutch.
    Ken.
    I have the HKS Triple in mine. Before the slave cylinder mod it was very difficult to get rolling without looking like a complete noob. Now that we have done the mod it has turned the clutch into a reasonably easy unit to use for the power it can hold....But i agree with Ken that it will be a clutch that you will be aware of at hills ect...... Once you get used to it its ok, but i would not own one if your roads have a lot of steep hills everywhere that you will be forced to stop.

    Also as Nick says, i like that its design is inherently NOT prone to causing excessive thrust bearing loads/crankwalk, which it seems is a weak area in our engines. If that is the case, I would have to give the HKS Triple a reasonably positive review.

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  12. #85
    SupraForums Member Junior81's Avatar
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    Rps C/C

    I have had this clutch in my car for about a year now and It is a good clutch. It has handled everything that I have thrown at it. It seems to me that you just have to watch when drag racing this clutch how you come out of the burnout box. I have heard of people buckling their straps on the clutch. I inspect mine from time to time and they look good. I have the aluminum flywheele and don't have any noticeable clutch chatter at idle. But, as snacks said it is a rough engagement in first gear and does make you feel like a noob.
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  13. #86
    SupraForums Member BLITZSUPRA's Avatar
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    Quote Originally Posted by kirkMKIV View Post
    Are you running a sprung or unsprung disk? Seems like this is the clutch that best fits my needs.
    Stock flywheel (and therefore unsprung). The stock mass flywheel helps for driveability and also engine braking in the corners.

  14. #87
    SupraForums Member BLITZSUPRA's Avatar
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    Quote Originally Posted by kirkMKIV View Post
    Are you running a sprung or unsprung disk? Seems like this is the clutch that best fits my needs.
    Stock flywheel (and therefore unsprung). The stock mass flywheel helps for driveability and also engine braking in the corners.

  15. #88
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    Quote Originally Posted by BLITZSUPRA View Post
    Stock flywheel (and therefore unsprung). The stock mass flywheel helps for driveability and also engine braking in the corners.
    I'd agree with the added mass of the stock FW making the car more drivable due to the stored energy in the FW. Easier to start from a dead stop, revs don't drop as fast between shifts.

    But, this would have the opposite effect on engine braking, would it not? The resistance to a change in rotational speed due to the weight of the FW makes the engine slower to rev both up *and* down.
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  16. #89
    SAP R/3 Guru 2DIE4's Avatar
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    Hope this wasent already posted http://www.horsepowerfreaks.com/tech...placement.html
    I got a Exedy twin plate CF/CF rumour says that exedy makes the TRD clutches.
    GL with your choice.
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  17. #90
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    Clutchmasters anyone?

  18. #91
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    hi guys, might help you decide, i have an rb30 in my r33gtr, removed a nismo g-max triple plate clutch because pedal pressure was quite heavy,,just fitted an os giken r4c quad,,running 800bhp @ the wheels. all i can add it is the best road clutch i have driven, no noise when the pedal is pressed and very light for a quad, superb clutch.. only drawback which i will need to investigate is the pedal is low to the floor for biting piont, i have an adjustable clutch rod but altering that has made very little difference.. bernie uk

  19. #92
    SupraForums Member JustinCT's Avatar
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    Quote Originally Posted by Projectmk4>R1 View Post
    I've had carbonetics, RPS C/C, HPF Feramic, Tilton and a few others..

    I would NEVER get the carbonetics again. Once it goes the cost to rebuild is so high, you are better off ordering a new clutch. However, it did hold 800+rwhp for a few years. Didn't really seem to like going to the drag strip though.
    Clark, I'm curious to hear more about your experience with the carbonetics clutch. Were you using their carbon clutch? I'm personally interested in the performance of their triple carbon unit. I don't believe it has been in the market for very long and I'm wondering if your feedback might be based on a non-carbon multiplate clutch made by ATS. I would suspect that if this is the case, then their carbon unit would probably perform better than a clutch that you may have owned. Their triple carbon clutch really sounds like a nice piece for the money...but I am also interested in what rebuild costs might be for this clutch.

  20. #93
    SupraForums Member MATON's Avatar
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    Make a poll so everyone can see which one gets the most votes.


  21. #94
    Ex-hardtopper Boostrush's Avatar
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    Quote Originally Posted by PNUTZ View Post
    Make a poll so everyone can see which one gets the most votes.

    It's going to vary on personal taste and ultimate goals. As we've seen thus far in this thread, some people would sacrifice one thing for another. For instance, I'd be willing to sacrifice pedal pressure and rattles for a clutch that holds the power and doesn't cost an arm and a leg. (Tilton price range)

    What this thread has accomplished is real world reviews from those who have experience with the clutches mentioned. This should definitely be sticky at some point as I'm sure it would be a great reference in the future.

  22. #95
    Ex-hardtopper Boostrush's Avatar
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    Quote Originally Posted by JustinCT View Post
    Clark, I'm curious to hear more about your experience with the carbonetics clutch.
    +1 for more reviews on Carbonetics Carbon clutches from those who have them or have used them.

  23. #96
    SupraForums Member NITECRUISER's Avatar
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    I have OS Giken Triple and I love it because it's easier to drive for first timer. Yes, it's stiffer, don't know how much stiffer from stock clutch though.
    Anyhow, I don't plan on going crazy for drag race, but, I like to go for high speed freeway runs. I think this clutch do the job very nicely.
    (I have Supra HKS GT2835's, 667.5 WHP)- for reference.

    However, I tried the HKS triple and it's just not for me eventhough it's much more friendly for your leg. lol.

  24. #97
    Lets go Nets neonafk's Avatar
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    Quote Originally Posted by NITECRUISER View Post
    I have OS Giken Triple and I love it because it's easier to drive for first timer. Yes, it's stiffer, don't know how much stiffer from stock clutch though.
    Anyhow, I don't plan on going crazy for drag race, but, I like to go for high speed freeway runs. I think this clutch do the job very nicely.
    (I have Supra HKS GT2835's, 667.5 WHP)- for reference.

    However, I tried the HKS triple and it's just not for me eventhough it's much more friendly for your leg. lol.
    given that comment there seems like far too much tradeoffs between these high performance clutches, can't anyone make a clutch that is all-around perfect for the average single turbo supra owner!!?! (RPS tried and failed miserably)

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  25. #98
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    so basically heres the summary of the thread correct me if i am wrong?

    most peoples opinions are:
    tilton seems way too expensive..
    hks triple wont hold 900whp and isnt easily driveable
    rps would be perfect but reliability is so so and they dont stand behind their products
    carbonetics is unproven so far
    os giken has really heavy pedal pressure and is unproven at the drag strip

    i know spec just made a twin disc for the r154.. anything in store for the v160?

  26. #99
    SupraForums Member MATON's Avatar
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    You forgot the HPF Feramic, best bang for the buck. And holds the power

  27. #100
    Now...Whitesupra94
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    Quote Originally Posted by PNUTZ View Post
    You forgot the HPF Feramic, best bang for the buck. And holds the power
    But very heavy pressure plate and a 1 inch engagement can be tricky. Seems like it takes the beating reliably though.

    Clutch switch mod a must!!!!

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