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Old 05-03-2009, 04:33 AM   #1 (permalink)
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Question what is the best clutch

when i am finished with my car a am looking at around 425 to 500 horses and i was wondering what is the best clutch for that amount of horses
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Old 05-03-2009, 04:58 AM   #2 (permalink)
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twin disc!
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Old 05-03-2009, 08:55 AM   #3 (permalink)
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"Best" is relative to many things such as:
Type of use (road racing, drag racing, daily driver, trailer queen, etc)
Torque capacity
Heat capacity (usually caused by abuse)
Clutch Life (friction material wear, spline wear, usable working range)
Streetability (engagement smoothness/harshness, clutch chatter, predicability)
Noise (floater rattle, gear noise, etc)
Pedal feel (stiffness, predictability, travel to modulate)
Cost (how much can you afford)
Value (performance/benefits versus clutch life, tradeoffs, etc)
Shifting quickness (several design factors will influence this such as disc weight)
Safety (modular versus non-modular, SFI certification, etc)
Quick revs (lower moment of inertia will rev/accelerate faster)

For the power numbers you are talking about, there are probably a few clutches that you may consider. Every clutch design has tradeoffs and every person has a different level of tolerance and driving skill. For example if the clutch has full surface sintered iron linings, torque capacity and heat capacity is fantastic because there is so much material to soak up the heat/load, but the disc is of course very heavy affecting load on syncros and ability to shift. As a result some will love it but others will hate it.

This makes "best" difficult to estimate without knowing a lot more information about what is important to you and what you can tolerate. I can go through each item on the list above and what design features affect each one, but that would be like writing a book. Email me at dstarksen@advancedclutch.com if you have any specific questions relating to clutches. I think you will find I am pretty fair and won't just give you a sales pitch.
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Old 05-03-2009, 11:25 AM   #4 (permalink)
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Quote: Originally Posted by ACTman View Post
"Best" is relative to many things such as:
Type of use (road racing, drag racing, daily driver, trailer queen, etc)
Torque capacity
Heat capacity (usually caused by abuse)
Clutch Life (friction material wear, spline wear, usable working range)
Streetability (engagement smoothness/harshness, clutch chatter, predicability)
Noise (floater rattle, gear noise, etc)
Pedal feel (stiffness, predictability, travel to modulate)
Cost (how much can you afford)
Value (performance/benefits versus clutch life, tradeoffs, etc)
Shifting quickness (several design factors will influence this such as disc weight)
Safety (modular versus non-modular, SFI certification, etc)
Quick revs (lower moment of inertia will rev/accelerate faster)

For the power numbers you are talking about, there are probably a few clutches that you may consider. Every clutch design has tradeoffs and every person has a different level of tolerance and driving skill. For example if the clutch has full surface sintered iron linings, torque capacity and heat capacity is fantastic because there is so much material to soak up the heat/load, but the disc is of course very heavy affecting load on syncros and ability to shift. As a result some will love it but others will hate it.

This makes "best" difficult to estimate without knowing a lot more information about what is important to you and what you can tolerate. I can go through each item on the list above and what design features affect each one, but that would be like writing a book. Email me at dstarksen@advancedclutch.com if you have any specific questions relating to clutches. I think you will find I am pretty fair and won't just give you a sales pitch.

Someone finally says it. I don't know how many times I have told customers something similar myself.
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Old 05-03-2009, 05:23 PM   #5 (permalink)
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Quote: Originally Posted by SRT Jeff View Post
twin disc!

Only if you have a billet input shaft, if not you will be replacing input shafts regularly.

Quote: Originally Posted by srt_4_life_87 View Post
when i am finished with my car a am looking at around 425 to 500 horses and i was wondering what is the best clutch for that amount of horses

We have had great success with our race series clutches. They are great for the street and hold fantastic on the track. Only one problem with them, they are a little grabby for daily driving. My wife use to drive the car daily with the S362 turbo and one of our race clutches with zero problems.

The race clutch should meet the needs for what you have planned and if you want a better daily driver we can do the full face set up so you get near stock feel but still the supierior holding of the higher load pressure plate. We have these in stock and ready to ship out, just don't forget about the TOB fork arm. Thanks.
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Old 05-03-2009, 06:53 PM   #6 (permalink)
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ACT is the best!
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Old 05-03-2009, 06:58 PM   #7 (permalink)
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Quote: Originally Posted by ebluesrtboy View Post
ACT is the best!

ditto..

I have one for sell with 500 miles on it
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Old 05-03-2009, 07:03 PM   #8 (permalink)
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ACT and the NEW southbend clutches that are non modular.
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Old 05-03-2009, 11:53 PM   #9 (permalink)
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I have a spec stage 3 with a fidanza aluminum flywheel and it works great. It chatters alittle at idle but I don't mind. I have 10k miles on it now surprisingly enough.
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Old 05-04-2009, 12:27 AM   #10 (permalink)
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60,000 miles on my dailey driven clutchmasters stage 3.....feel just like stock and never had any issue.....mid 300s whp.......I would say go Stage 4 cluchmast for what you are looking for.
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Old 05-04-2009, 07:35 AM   #11 (permalink)
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ACT 6 puck a little harsh on engagement but it is a very good clutch and it can hold the HP and Torque u u are lookin to get
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Old 05-04-2009, 08:43 AM   #12 (permalink)
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ACT clutch and flywheel and ive got 420whp.... works good!
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Old 05-04-2009, 10:20 AM   #13 (permalink)
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Question

i think i have an aftermarket clutch in it now i just do not know what it is i assume the only way to figure that out is to look
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