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How to lighten a stock cast iron Flywheel

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BogusSVO

10+ Year Contributor
5,891
318
Jul 1, 2009
Pensacola, Florida
How to lighten a stock cast iron flywheel



Start with your stock flywheel, In my case, 2.3L Turbo Ford

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Its weighs in at 20.5Lbs

Lets see how much weight can be cut off….



Next is to remove the clutch plate alignment pins….

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A slide hammer works well

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Mount the flywheel upside down, on the flywheel grinder

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Start buy cutting the excess cast iron down to the ring gear..
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Once that was flush, I weighed the flywheel again, that reduced the weight by .75 lbs (12 oz) now 19.75 lbs

Time to thin the fat from behind the ring gear…

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each pass, this machine cuts only .005-.008 off…

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the final weight is now 17.75 Lbs

I removed a total of 2.75lbs…. This should help the engine rev a bit faster, with out giving up too much torque..
 
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