The V8 Owners Forum -

Hi can you lighten the SD1 flywheel.

Thanks
Leigh

Yes would I recommend it no. If a flywheel shatters it will take you feet off.

While Katanaman's comment is true about possible consequences, a flywheel that has been sensibly lightened will be no weaker than the original, because the material removed will mostly not contribute to its strength, and by reducing a lot of the outer weight you can actually reduce stresses.

If you’re building a real screamer of an engine, you have to be careful and not just let any grunt with a lathe cut metal from the wheel. If you’re running less than 7000rpm, it’s highly unlikely, even if you go to town on the flywheel, that anything will go wrong.

I'd think it'll be a near pointless expense. The difference a lighter flywheel will make to most SD1 applications will be unnoticeable, IMO this sort of work is better suited to high revving screaming engines over engines generating low-mid range torque.

Yikes! Marki's made me feel better about splashing out on a new flywheel over my current one which is full of light cracks, I was going to skim it but the friction surface is already buried far below the outer wheel!!

Rick-Manta wrote:I'd think it'll be a near pointless expense. The difference a lighter flywheel will make to most SD1 applications will be unnoticeable, IMO this sort of work is better suited to high revving screaming engines over engines generating low-mid range torque.

A lighter flywheel will still make a noticeable difference to the speed the engine revs up when downshifting - and for much crisper, more purposeful 'blipping' from idle!

Well its going to be semi high reving as will be used on a race car, but will be limited to max 4.0 and max 230 BHP. so will go up to 6-7k but not over.

Anyone know of any company's in the South East / Essex Area, that could do this work.

I have some other work that needs doing so hopfully somwhere that specialises on RV8's

Thanks
Leigh