dual disk clutch
Thread Starter
Racer
Joined: Aug 2005
Posts: 456
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From: Forty Fort PA
dual disk clutch
Hi everyone.
I have a chance to pick-up a Mcleod dual disk set-up with flywheel, pressure plate, and disks. It is supposedly GM but the pressure plate is of the 3 finger type, not diaphragm.
Anyone have experience with this or an opinion? Supposed to have come out of a 55 running a Richmond tranny.
Thanks,
Langg
I have a chance to pick-up a Mcleod dual disk set-up with flywheel, pressure plate, and disks. It is supposedly GM but the pressure plate is of the 3 finger type, not diaphragm.
Anyone have experience with this or an opinion? Supposed to have come out of a 55 running a Richmond tranny.
Thanks,
Langg
Last edited by langg; Aug 3, 2013 at 11:55 AM.
Safety Car
Joined: Nov 2008
Posts: 3,716
Likes: 551
From: Seattle Washington
I had the Mcleod Duel Disc and it was not a 3 finger. There is a newer version that uses a stock style Flywheel and I doubt its a 3 finger. If You go to there Web sight You can see what they produce.
Race Director
Joined: Jan 2000
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From: Corsicana, Tx
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I used one of them in my car. It has incredible holding power and works well. You have to make sure the linkage is in good shape and there is enough travel to make it release properly.
I had a Centerforce in my car that held well through the 750'ish HP range....but it couldn't handle 850+'ish. I installed the dual disc and it was fine.
It wasn't great for serious drag racing because it held TOO well with no slippage at all on slicks. I eventually moved to a race style McLeod Soft Lok clutch. But that's hardcore stuff.
I've also used the later McLeod dual disc diaphragm version in a 800 HP 555 in a C3 and it worked well also.
McLeod makes really good stuff.
You might look into their adjustable throwout bearing also. It provides 3 different thicknesses to allow you to dial in the geometry perfectly.
JIM
I had a Centerforce in my car that held well through the 750'ish HP range....but it couldn't handle 850+'ish. I installed the dual disc and it was fine.
It wasn't great for serious drag racing because it held TOO well with no slippage at all on slicks. I eventually moved to a race style McLeod Soft Lok clutch. But that's hardcore stuff.
I've also used the later McLeod dual disc diaphragm version in a 800 HP 555 in a C3 and it worked well also.
McLeod makes really good stuff.
You might look into their adjustable throwout bearing also. It provides 3 different thicknesses to allow you to dial in the geometry perfectly.
JIM
Thread Starter
Racer
Joined: Aug 2005
Posts: 456
Likes: 0
From: Forty Fort PA
Seller claims its for a GM application and has "fine" spline (26?). Ill verify that before I buy but I really am asking about the 3-finger pressure plate. Is there any problem using one of those in my 75 (ish) vette? (M22 tranny)
langg
langg
Race Director
Joined: Jan 2000
Posts: 13,014
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From: Corsicana, Tx
2020 C2 of the Year - Modified Winner
2020 Corvette of the Year (performance mods)
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2017 C2 of Year Finalist
No problem using 3 finger. It will take the "short" throwout bearing. Just make sure the geometry of the fork is correct before you plug the trans back in. This is common with any clutch design change. No big deal..just have to get the correct stud/bearing combo together. You might post a pic of it, but the one I had was a "hybrid" where it used a "Long style" pressure plate (like a Ford) and a Borg/Beck style lever assy in it. Worked fine. There are characteristics of the two designs that McLeod combined to make a great clutch assy.
JIM
JIM
Race Director
Joined: Jan 2000
Posts: 13,014
Likes: 2,257
From: Corsicana, Tx
2020 C2 of the Year - Modified Winner
2020 Corvette of the Year (performance mods)
C2 of Year Winner (performance mods) 2019
2017 C2 of Year Finalist
Just to add some...the advantage of a dual disc clutch is it has incredible holding power with lower pressures. That makes for less pedal effort and still be able to hold the power. I never had any chatters or anything bad with it.
Just depends on how much power you're tryin to hold if it's worth the $$$.
JIM
Just depends on how much power you're tryin to hold if it's worth the $$$.
JIM
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