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Got Boost?
 
Join Date: Jan 2007
Location: NH
Posts: 135
alum flywheel question?

I was wondering if anyone has had experience running light alum. flywheels in 930s
A fidenza flywheel isn't too much $ although I am wondering if it is up to the task in a high hp motor
Although the clamping force won't be affected I am worried about shearing the friction plate
Motor should make 5-600 rwhp (dep. on boost)
thanks
john
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porsche 930rs
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Old 02-08-2007, 09:38 AM
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This was discussed a while back. The 930 does generate more clutch heat. The question is does aluminum dissapate this heat better or is steel better at handling the heat? I chose steel.
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2014 Cayman S
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Old 02-08-2007, 10:27 AM
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I'm running a Fidenza alum. flywheel with a phase 3 Kennedy alum. clutch, and a 6 paddle matalic disc.
This setup is about 30lbs lighter than stock.
The car is making over 750 hp and it's holding up so far.
You will need a lot more RPM's of the line, but it makes
RPM's very quickly. The car sounds like a GT-1 race car.
Amac
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Old 02-13-2007, 10:23 AM
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Off topic: What type of wheels are you running on that bad boy?

Quote:
Originally posted by Amac
I'm running a Fidenza alum. flywheel with a phase 3 Kennedy alum. clutch, and a 6 paddle matalic disc.
This setup is about 30lbs lighter than stock.
The car is making over 750 hp and it's holding up so far.
You will need a lot more RPM's of the line, but it makes
RPM's very quickly. The car sounds like a GT-1 race car.
Amac
Old 02-13-2007, 02:48 PM
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Amac, that's good to know on the aluminum flywheel. Have you changed the clutch disk yet and had a good look at the flywheel?
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2014 Cayman S
2011 Cayenne Turbo
1979 930 (475 rwhp at 0.95 bar)
Old 02-13-2007, 03:40 PM
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Got Boost?
 
Join Date: Jan 2007
Location: NH
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went with the fidanza set up
this along with a kennedy clutch
I went with this setup because it still has steel friction surface (replaceable)
while looking for flywheels the only types I came across were the fidanza and bremtek
I spoke with JB racing in FL (have dealt with in the past, great products and very honest) they are currently working on a clutch setup for 930s and it should be ready to sell in a short while
thanks for the advice
john
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Old 02-16-2007, 07:16 AM
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930 fidenza Al flywheel

Hey John,

I noticed your post from last year.
What year 930 are you running?
I have a 79 with the small diameter press-in pilot bearing.
I have the Al flywheel with 50 mm opening.
I bought the 50 mm sealed pilot bearing, which looks like it will stick out toward the clutch disc unless you remove the small pressed in flange.
Any help or suggestions would be appreciated.

cheers,

mark
Old 07-15-2008, 05:07 PM
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But are you changing to an aluminum pressure plate? That is where all of the weight is in these cars, not the flywheel. Sure the aluminum flywheel is lighter, but not as big a diffrence as an aluminum pressure plate to the monstrosity that comes stock. I have the Fidanza in my car at 496 horse and countless drag races and it works fine. However, the I am trying to find a way to get one of my aluminum G-50 pressure-plates to work with the 930 box because it will make the most diffrence.
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Old 07-15-2008, 07:44 PM
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goes w/o saying

You bet I'm using the lightweight early turbo clutch w/extensions to reach from the long bell housing. Not w/ the hp you have, just a Euro w/ Andial intercooler.
I may just use the stock flywheel as it is not that much heavier then the Al version if I can't get the fitment straightened out (11# vs 6.5#).
I would rather have the extra 4.5 # than a torn up crank & tranny.

cheers,

mark
Old 07-16-2008, 02:13 PM
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