Lightened Flywheel -2.0l 16v

[sad_rocc at yahoo.com (Dan Smith)]

Does anyone use a lightened flywheel in a turbo car? I was going to but was told that that would be a very bad idea, as it would be hard to stay in the turbo's range on shifts and 1st and 2nd would be pretty much useless. Opinions?
 
Dan

Ron Pieper <rapieper@yahoo.com> wrote:
Well, logic dictates that it MUST have a downside or VW would have given us 8lb flywheels from the
factory. I'd guess they didn't because:
- rougher idle (slightly), esp. when cold; slightly increased tendency to stall
- more finicky takeoff, potential for stalling or chatter
- potentially increased rear main bearing wear
- low speed operation, potential lurching
(this may seem off the wall but I wonder if there's an emissions consideration in there too -
having to do with very quick engine decel on liftoff and the engine management's ability to
control the mixture (meaning emissions) during that state...)

In other words, stuff we ain't going to worry about.

It doesn't add HP to the engine, but it does add HP to the wheels *in transition states* - i.e.,
accelleration. With a light flywheel, the HP that your engine would have used spinning up your
flywheel is now going to the wheels. 

All in all, a VERY worthwhile mod. I've had one for years (did it myself). Wouldn't go back.

Ron

--- Allyn wrote:
> >It seems to be one of those unusual mods that have no downside.
> > Larry
> 
> well, there is a downside, but only if you take the lightening to the 
> extreme. at that point it becomes hard to launch without stalling.
> Al





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