Flywheel?Anybody know the benefits of buying a really light one? Or machining the stock flywheel?

Question

Side question Anybody know the negative for putting in a lighter flywheel? It's not going on a dedicated race car or anything this is actually just a semi fast family car. It's for my 98 Volvo S70 T5. I've heard that the engine chatters? For what reason? I'm considering getting the stock flywheel machined. Does anybody know how much the flywheel for 2.3L 5cylinder turbo volvo is? Can find much info on it.

Answer 1

First of all, I don't think you're going to find a lot of aftermarket performance parts for a Volvo, even a T5.

A lighter flywheel will allow the engine to rev and drop back more quickly.  It will also increase the HP slightly, as it reduces the rotational weight of the engine.  However, if the car is an automatic, it won't do you any good.

Answer 2

A lighter flywheel is good for lessening the effects of rotational mass.  The upside is that the engine revs much faster and more easily.  Also, while it doesn't actually make power, it helps free up a little bit of power from the engine.  The downside is that if the transmission is a standard, it does make the car more difficult to drive smoothly.  

Personal opinion only but a lightened flywheel is not for everyone.  I would only consider it for a race engine and even then, it would be one of the last things I would do to the engine.