Mcleod RST question. - Pontiac GTO Forum
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post #1 of 8 (permalink) Old 08-08-2017, 09:03 AM Thread Starter
 
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Mcleod RST question.

So I searched the forum already and couldn't find any answers. I purchased a Mcleod RST and was told that it needed a new flywheel to work. However I read that the flywheel on the ls2 GTO will work. Anyone have any experience with this setup?
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post #2 of 8 (permalink) Old 08-08-2017, 10:58 AM
 
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If you spent that amount of money on a nice twin disc why not spend the extra hundred bucks and get a new flywheel?

I wouldn't want to re-use the stock flywheel with a clutch like that even if is "possible". And even if you did, you would want to have it machined to a flat surface... that is, if it still has enough run out.

So the money you would spend to have the stock flywheel machined... Take that, add a couple bucks and get yourself a new flywheel.

2006 GTO M6

Motor - Stock with Vararam
Bunch of suspension
Bunch of brakes
Stock tune

365/368 std
12.81 @ 110.6 2.03 60'
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post #3 of 8 (permalink) Old 08-08-2017, 11:56 AM Thread Starter
 
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thanks for the advice. any recommendations on flywheels?
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post #4 of 8 (permalink) Old 08-08-2017, 12:43 PM
 
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I would go with a stock weight flywheel. This will keep the driving characteristics the same and also help launching the car. Stay away from the lightweight flywheel unless you are doing road coarse or autocross work.

Most of the afterlarket ones are Billet Steel which is what you'd want. If it says SFI certified you're good to go. Stock weight is 28lbs

2006 GTO M6

Motor - Stock with Vararam
Bunch of suspension
Bunch of brakes
Stock tune

365/368 std
12.81 @ 110.6 2.03 60'
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post #5 of 8 (permalink) Old 08-09-2017, 03:33 AM
 
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I have a 12.5 lbs Fidanza Aluminum Flywheel on my 05 GTO and it drives
great. The GTO has Gobs of low end torque and doesn't miss the heavy flywheel.
The throttle response is much quicker. Sure, the rotating mass of the heavy flywheel
helps launching the car, but it takes torque away from the engine any and every time
you rev it up. I have sticky 275 Nittos on the rear and can turn off the traction control
and smoke the tires any time I want in low and second. Shifts are actually smoother
with the lighter flywheel.

Larry

2005 GTO Quick - 1984 Honda V65 Magna Quicker - 2004 Z06 Quickest
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post #6 of 8 (permalink) Old 08-09-2017, 09:25 AM
 
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Quote:
Originally Posted by AlaGreyGoat View Post
I have a 12.5 lbs Fidanza Aluminum Flywheel on my 05 GTO and it drives
great. The GTO has Gobs of low end torque and doesn't miss the heavy flywheel.
The throttle response is much quicker. Sure, the rotating mass of the heavy flywheel
helps launching the car, but it takes torque away from the engine any and every time
you rev it up. I have sticky 275 Nittos on the rear and can turn off the traction control
and smoke the tires any time I want in low and second. Shifts are actually smoother
with the lighter flywheel.

Larry
Oh wow that's awesome! I've always heard the opposite especially with drag racing you want the inertia.

2006 GTO M6

Motor - Stock with Vararam
Bunch of suspension
Bunch of brakes
Stock tune

365/368 std
12.81 @ 110.6 2.03 60'
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post #7 of 8 (permalink) Old 08-09-2017, 06:42 PM Thread Starter
 
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Larry thanks for the specifics. I was wondering if it would be that much different. I don't do much drag racing anyway. The Fidanza's work with the RST? None of the merchants I've seen say whether the flywheels are recessed or not.
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post #8 of 8 (permalink) Old 08-09-2017, 11:08 PM
 
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According to the Mcleod site, the RST works with most stock flywheels, so it should work with the LS1, LS2, LS6 Fidanza. It has a bolt-on adapter for the recessing for the dual disks. There are some chrome moly steel lightweight
ones that are SFI rated at a little cheaper price. The Fidanzas have gotten
a little pricey. Most other dual disk clutches have their own proprietary recessed flywheels.

Larry

2005 GTO Quick - 1984 Honda V65 Magna Quicker - 2004 Z06 Quickest
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