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Clutches for 700++hp

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Old Feb 3, 2005 | 07:53 PM
  #21  
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Originally Posted by NA$TY-TA
I called and talked to SPEC yesterday and i was told there is no point in going with a stage 4F...... over a stage 5..... (for my power level shooting for 800rwhp) they both handle the same power and the stage 5 is $50 cheaper then the stage 4F...... we will see how it does in my car and how many street miles i get becaus ei plan on daily driving it.....
PurEvl how many miles to you have on your stage 5 now????
I would like to know what others have been told when going with SPEC clutched for 700rwhp+ combo's
Kyle
About 2k maybe and its coming out in april, it squeels like a pig on take off, very annoying. Also once its hot its on or off, thank god I got a small cam now cause before it would break your neck.
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Old Feb 3, 2005 | 08:32 PM
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My Spec 5 feels good. Other than the squeal. I like it. The question is do the squeal really go away? Two local cars run this clutch and they have no squeal. My squeal seem to be slowly going away. Down to more chirping.
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Old Feb 3, 2005 | 08:56 PM
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Originally Posted by Slowhawk
I like the 3F alot more than the 5.In Pure Evils car you can stall it real easy and the clutch squeels like a pig.I think it has a whole 1/2" of peddle travel to slip it But it has held up pretty good

So Don from your experience would you go with a stage 4F or stage 5 in my case....... shooting for 800rwhp on a mustang dyno with my new T-88. will the 4F hold the power the same amount of time as the stage 5?? Damn it why does this have to be so hard..
Kyle
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Old Feb 3, 2005 | 08:57 PM
  #24  
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Originally Posted by InvisibleSun
I ran a Spec Stage 5 when we were shooting for 800hp and it was very streetable but it did squeak a lot. Nothing too bad though... I only had it on there for a couple of weeks but if I still had an M6, I would do it again...

Well thats good to hear............ whens that beast going to be doen???
Kyle
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Old Feb 3, 2005 | 08:58 PM
  #25  
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Originally Posted by PurEvl
About 2k maybe and its coming out in april, it squeels like a pig on take off, very annoying. Also once its hot its on or off, thank god I got a small cam now cause before it would break your neck.

What do you mean by on or off???
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Old Feb 3, 2005 | 08:58 PM
  #26  
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Originally Posted by SUPER DAVES Z
I know this is not the right forum but I want to know what the Fi guys are doing.

I think my spec 3 clutch is about done. I was wondering what clutches yall are running for your high hp street cars (700++).

Is the McLeod street twin disc the only way to go?
Is there anyone running the Spec 4 with the new F opition on the street? How is the drivablity, did it hold up?

Thanks,
Dave

Spec Stage 3 all Aluminum parts, with full ceramic surface. Still holding
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Old Feb 3, 2005 | 10:27 PM
  #27  
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Originally Posted by VINCE
My Spec 5 feels good. Other than the squeal. I like it. The question is do the squeal really go away?
The barking seal seems to be a SPEC feature when cold. Kinda grows on you, lol.
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Old Feb 4, 2005 | 05:34 AM
  #28  
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Originally Posted by 1bad2k2ta
So nobody is using anything other than the Specs? No RAM, Hays, Cartek, McLeod, etc.?
im using a ram 6130/402, it seemed to hold at 536 lbft of torque, but there was something wrong with the pressure, dont know if it was the pressure plate or something else screwey with my hydrolics where the pedal would get soft and stick to the floor (this also was the problem with my spec 3), i replaced every hydrolic peice exept the line, after i replaced my spec, the problem seemed to stop, but then it came back im starting to think it was the hydrolic line, the only thing i didnt replace.
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Old Feb 4, 2005 | 07:37 AM
  #29  
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Originally Posted by smokinHawk
im using a ram 6130/402, it seemed to hold at 536 lbft of torque, but there was something wrong with the pressure, dont know if it was the pressure plate or something else screwey with my hydrolics where the pedal would get soft and stick to the floor (this also was the problem with my spec 3), i replaced every hydrolic peice exept the line, after i replaced my spec, the problem seemed to stop, but then it came back im starting to think it was the hydrolic line, the only thing i didnt replace.
Thanks, SmokinHawk. I have a RAM 402 with a 900 series sintered iron disk that I am planning on using in my new setup. Looking for 650-700 rwhp. Do you think it will hold up? I don't plan on any 5k dumps or really hard launches, but I am running 3.42 gears. Also, are you running an adj. master cylinder? Do you recommend using one? I was told by a RAM representative that the RAMs in particular benefit from this, or else a 1/4 inch shim should be placed behind the bearing. Do you have an opinion on this?

Thanks,
Tom
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Old Feb 4, 2005 | 07:48 AM
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Originally Posted by NA$TY-TA
What do you mean by on or off???

Mine only squeals once a day, the first time I take off from my garage, after that it stops. It slips if Iwant it too also. On or OFf means that it has no middle "slip" range, it either grabs or is compeltely disengaged. I foudn my stage 5 on the LS1 to be more streetable then the ceramic stage 4 I ahve on my v6.
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Old Feb 4, 2005 | 08:22 AM
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Originally Posted by 1bad2k2ta
Thanks, SmokinHawk. I have a RAM 402 with a 900 series sintered iron disk that I am planning on using in my new setup. Looking for 650-700 rwhp. Do you think it will hold up? I don't plan on any 5k dumps or really hard launches, but I am running 3.42 gears. Also, are you running an adj. master cylinder? Do you recommend using one? I was told by a RAM representative that the RAMs in particular benefit from this, or else a 1/4 inch shim should be placed behind the bearing. Do you have an opinion on this?

Thanks,
Tom
ive done a few 2nd gear 5k clutch drops (for my burnouts) it holds, ive done a couple 5k 3rd gear clutch drops, it doesnt hold.
with that is about the extreme testing i have done with it, so i think it Should hold at your HP level. i probably have 5-7k miles on my clutch so far so i havent done any long term testing.

id get an adjustable masterjust incase, i have a mcloud, and might be switching to a ram if when i replace my line, then slave and that doesnt fix my spongy feeling.
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Old Feb 4, 2005 | 10:40 AM
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Another Spec stage 4F happy customer checking in. I was scared at first with the unsprung hub, but you really can't tell from driving that this car has such a heavy duty clutch. Peddle pressure is almost stock, engagement is smooth. You have to rev it just a little higher day to day driving on take off for it to be perfectly smooth from a stop, but you'll quickly adjust. Less part = less worry. This drives much nicer than my spec stage 3 which was a puck disk.
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Old Feb 4, 2005 | 10:59 AM
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It seems that anyone who is running the 4F is happy. I know MM drives his car alot and beats up on it at the track so if it can take what he is dishing out, it's good in my book. Sounds like it would last longer on the street than the 5 anyway.

For anyone looking to buy one soon, Speed engineering is running some really good prices on the 4F right now (around $535 shipped for the clutch, no flywheel), but I know most of the other sponcors will price match if you are more comfortable with them (at least LS1 speed will).

Later,
Dave
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Old Feb 4, 2005 | 03:30 PM
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Originally Posted by MelloYellow
The barking seal seems to be a SPEC feature when cold. Kinda grows on you, lol.
LOL!! It is growing
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Old Feb 4, 2005 | 04:04 PM
  #35  
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Originally Posted by NA$TY-TA
So Don from your experience would you go with a stage 4F or stage 5 in my case....... shooting for 800rwhp on a mustang dyno with my new T-88. will the 4F hold the power the same amount of time as the stage 5?? Damn it why does this have to be so hard..
Kyle
I really can't tell yet because I haven't fully tested the F series disk yet to it's full potential.We will be running one in Pure Evils car and my own but the track doesn't open for a few months still.A good clutch to me is one that lasts 5k miles on my own car.The 3I lasted about 18 passes before it really started to slip which wasn't bad for slipping the clutch at 5000rpm under boost
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Old Feb 4, 2005 | 04:16 PM
  #36  
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Here is my vote for the Spec 4F. Great clutch, and drives suprisingly well IMO.
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Old Feb 4, 2005 | 07:02 PM
  #37  
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Damn i really need to make up my mind........ Ill probably go with the 4F.... since so many of you are happy with it.... but then part of me wants to go with the 5..... maybe ill just have some one else choose between the two and if it goes out and im not happy with it the next clutch ill go with the other....... hmm sounds like a plan ha ha
Kyle
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Old Feb 5, 2005 | 09:34 AM
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i would let spec decide for you. they know exactly what the intent is with each version clutch and which would suit you better.
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Old Feb 5, 2005 | 11:55 AM
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Originally Posted by MIGHTYMOUSE
i would let spec decide for you. they know exactly what the intent is with each version clutch and which would suit you better.

I told them that i wanted to drive it on the street and for it to be able to hold 800rwhp and they told me the stage 5......
Well if it lasts me 7.5-10K miles ill be happy.
Kyle
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