Re: Any one ever put an aluminum flywheel ... - Saab 900 Bulletin Board - Saabnet.com


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Re: Any one ever put an aluminum flywheel ...
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Posted by Use to be vvack0matic (more from Use to be vvack0matic) on Mon, 22 Feb 2016 10:45:55 Share Post by Email
In Reply to: Any one ever put an aluminum flywheel ..., SaabStalker [Profile/Gallery] , Sun, 21 Feb 2016 11:10:05
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While in the mode of modding my spg I looked into it and was seriously considering on installing one but did some extensive home work on them first.

And it comes down to this. A light (aluminum) flywheel will provide a faster rev time (great for turbo spool up) and pealing away weight of the car when competeing. It's highly recommend if your car is used for the race track only.

The down side is if you use your car for track and street it's a 50/50 toss
If your only using you car for street an aluminum flywheel is not a great idea. Reasons are becouse the aluminum flywheel can and will warp in extensive stop and go traffic (as in rush hour. Another downfall is, the oem flywheel has excessive weight for a reason, when you promptly remove the gas right after a hard boost the excess weight on the fly wheel counters the weight at the harmonic balancer giving the motor a smooth roll out if it was an aluminum, or the oem was lighten there would be a pronounced shudder at the back of the motor enviably ruining your harmonic balancer bearing.
If the car is used for track only the advantages the light weight flywheel has out weighs the shudder effect. Again if the cars street only you can expect bearing failure along with a warped fly wheel.

Personally my car was a street racer and I opted for the 93 Saab 9000 flywheel. It is a direct bolt on to the 2.0 motor and has a huge clutch plate surface compared to the oem clutch.
A word of warning though if your going to the 9000 clutch.

Only reason one would go to the 9000 clutch is becouse the car is modded heavily and most likely its pushing 20+ psi, red box, 30lb injectors, the 3.0 fuel bar and so on.
If your cars modded and you boost off from a light and accidentally hit 2nd (if you could get it in the gear) when you wanted 4th the 9000 flywheel won't give. Meaning the oem 900 flywheel will burn the clutch plate to compensate for the excessive rpm to speed mismatch and at this time you'd relise the shifting error and engage the clutch pedal. The 9000 flywheel will not do this. Once you let off the clutch pedal that clutch will not give and would cause transmission falure as in stripping the teeth of the primaries to compensate for the rpm to speed mismatch.The 9000 clutch is a serious clutch for the modded 2.0 and it's awesome in a street ride. You want to burn out till the cows come home the 9000 clutch has your back. Super awesome setup

But in the end it's your ride and if you want aluminum get it. I'd suggest going 93 9000 but only if your car is modded heavily, if it's not then it's like using a gaming computer just to check e-mails only. Lata

posted by 70.193.6...

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