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~The Jester~ · 12-30-2004, 07:38 AM

Stock flywheels are cast iron, weigh a ton, and generally aren't supposed to see over 6,000 RPM. Billet flywheels are machined from solid steel, weigh quite a bit less (surprisingly less, actually) and the SFI rated ones are spun well over 6,000 for an hour. Not sure the exact RPM, but SFI rated balancers are spun at 10,000 for an hour!!! ALuminum flywheels are a LOT less weight, and spin up extremely fast, great for getting that car to rev up quick off the line. On the down side, they fall off speed FAST too, got the whole mass/inertia thing going on there. That'll just make ya mad driving in traffic. If you're planning on street driving, and it appears good, get your's resurfaced and magnafluxed to check for stress cracks. If you got some $$$ laying around, go with the billet steel job.

Hey, Akbar. T-5 problems??? I can hook you up with a LIKE NEW TKO II, 2.67 first gear and shifts awesome bro!

12-30-2004, 07:38 AM	#10
~The Jester~ Rat Killer Join Date: Aug 2002 Location: Cold ass Ohio Posts: 1,143	Re: billet flywheel ? Stock flywheels are cast iron, weigh a ton, and generally aren't supposed to see over 6,000 RPM. Billet flywheels are machined from solid steel, weigh quite a bit less (surprisingly less, actually) and the SFI rated ones are spun well over 6,000 for an hour. Not sure the exact RPM, but SFI rated balancers are spun at 10,000 for an hour!!! ALuminum flywheels are a LOT less weight, and spin up extremely fast, great for getting that car to rev up quick off the line. On the down side, they fall off speed FAST too, got the whole mass/inertia thing going on there. That'll just make ya mad driving in traffic. If you're planning on street driving, and it appears good, get your's resurfaced and magnafluxed to check for stress cracks. If you got some $$$ laying around, go with the billet steel job. Hey, Akbar. T-5 problems??? I can hook you up with a LIKE NEW TKO II, 2.67 first gear and shifts awesome bro! __________________ d-Con Racing "Nothing fancy, just 347 inches of RAT POISON!" MICE need not apply.....