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Single vs twin disk clutch.

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Old Jun 4, 2011 | 11:12 AM
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Default Single vs twin disk clutch.

So after doing some research on here and talking to my mechanic I am up in the air.

I thought I finally decided on a Monster stage 3 but then I talked to my mechanic and he said he will put in whatever I want in but strongly suggested I go twin. I see alot of debates on here as to what clutch is better but I want to hear a single vs twin debate.

My car is 515RWHP and 485TQ. I drag race occasionally (once or twice a month) and put about 3K street miles on it a year. Price is definitly a part of the equation.
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Old Jun 4, 2011 | 11:52 AM
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Old Jun 4, 2011 | 02:17 PM
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Ok well i will tell you what i know on each. As for moster clutches, they seems to be ok but we rarely use them. The clutches that we reccomend to all of our customers are ACT. Their single disk clutch is rated to 745 FT/lbs at the flywheel and is $570 with out the flywheel. Their twin is rated to 875 FT/lbs and is $1300 with the flywheel. You may be thinking to your self "well that is only 130 ft/lbs why would i want to spend double the price?" well the ACT single disk achives such a high clamping force because of the spring tension and the material. The pedal is going to be quite a bit heavier than stock and the engagement is going to be a little more harsh. Now with the twin, the pedal is going to feel pretty close to stock and so is the engagement. the reason for that being that the springs and the material do not have to be as agressive because there is twice as much surface area to work with. Just before you think that the act twin is going to be heavier, just know that is it 22 lbs lighter than a stock clutch.
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Old Jun 4, 2011 | 02:22 PM
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Originally Posted by D-Rod
So after doing some research on here and talking to my mechanic I am up in the air.

I thought I finally decided on a Monster stage 3 but then I talked to my mechanic and he said he will put in whatever I want in but strongly suggested I go twin. I see alot of debates on here as to what clutch is better but I want to hear a single vs twin debate.

My car is 515RWHP and 485TQ. I drag race occasionally (once or twice a month) and put about 3K street miles on it a year. Price is definitly a part of the equation.
Use the ZR1 clutch it's dual disc and feels stock. Just slightly more pedal than the Ls-7. I have one in my z-06 with over 600 rwhp.
I'm conviced it's a great choice and feels and bites way more solid than the ls-7.
But still drives great.
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Old Jun 4, 2011 | 05:45 PM
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Originally Posted by austin@RPM
Ok well i will tell you what i know on each. As for moster clutches, they seems to be ok but we rarely use them. The clutches that we reccomend to all of our customers are ACT. Their single disk clutch is rated to 745 FT/lbs at the flywheel and is $570 with out the flywheel. Their twin is rated to 875 FT/lbs and is $1300 with the flywheel. You may be thinking to your self "well that is only 130 ft/lbs why would i want to spend double the price?" well the ACT single disk achives such a high clamping force because of the spring tension and the material. The pedal is going to be quite a bit heavier than stock and the engagement is going to be a little more harsh. Now with the twin, the pedal is going to feel pretty close to stock and so is the engagement. the reason for that being that the springs and the material do not have to be as agressive because there is twice as much surface area to work with. Just before you think that the act twin is going to be heavier, just know that is it 22 lbs lighter than a stock clutch.

Thats what I wanted to hear!! My mechanic wants me to put in an ACT twin but I havent heard of many people going with them on here. He told me it was $1000....maybe that was without the flywheel? Do I need to get a new slave?
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Old Jun 4, 2011 | 05:46 PM
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Originally Posted by Rock'n Blue 08
Use the ZR1 clutch it's dual disc and feels stock. Just slightly more pedal than the Ls-7. I have one in my z-06 with over 600 rwhp.
I'm conviced it's a great choice and feels and bites way more solid than the ls-7.
But still drives great.
I have read nothing but good things on that clutch too. Man.....picking a clutch is hard.
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Old Jun 4, 2011 | 06:25 PM
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Just ordered a ACT twin for a great price......Cant wait!
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Old Jun 4, 2011 | 08:31 PM
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Old Jun 5, 2011 | 04:14 AM
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Originally Posted by austin@RPM
Ok well i will tell you what i know on each. As for moster clutches, they seems to be ok but we rarely use them. The clutches that we reccomend to all of our customers are ACT. Their single disk clutch is rated to 745 FT/lbs at the flywheel and is $570 with out the flywheel. Their twin is rated to 875 FT/lbs and is $1300 with the flywheel. You may be thinking to your self "well that is only 130 ft/lbs why would i want to spend double the price?" well the ACT single disk achives such a high clamping force because of the spring tension and the material. The pedal is going to be quite a bit heavier than stock and the engagement is going to be a little more harsh. Now with the twin, the pedal is going to feel pretty close to stock and so is the engagement. the reason for that being that the springs and the material do not have to be as agressive because there is twice as much surface area to work with. Just before you think that the act twin is going to be heavier, just know that is it 22 lbs lighter than a stock clutch.


You'll be happy with the ACT twin.
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Old Jun 5, 2011 | 06:18 AM
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Alot of people are goin for the monster. I heard good things about them and when I am ready for it I am goin for a monster. I saw the disk on 1 with it apart and look virtually in good condition with about 10-20 drag passes on a 600hp GTO.
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Old Jun 5, 2011 | 07:40 AM
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Yes I called and talked to both Chris and Mike from Monster. Their customer service is the absolute best I have seen and both are extreamly nice guys. I felt very comfortable going with thier single disk and I know after talking to Bruce that it performs excellent.

However, the guy installing the clutch for me is probably the most knowledgable person I have ever talked to about cars and he suggested a twin. The dude builds 8 second cars like its his job (well I guess it is). I was still up in the air until he gave me a killer deal on the ACT.
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