Was: Lightened Flywheel -2.0l 16v, now turbo engine

[jdbubb at ix.netcom.com (Dan Bubb)]

So, can you explain the rational behind what you were told?
1st and 2nd would be useless because the engine revs faster so the turbo will never spool???
 Like saying you should make your engine heavy and slow revving so it'll build boost and be faster?
That makes no sense!
What you will find with a lightened flywheel is that you typically have to shift faster for a smooth
shift since the revs drop off faster. So, if you shift faster that means your back on the power
sooner so the turbo is spooling down for a shorter period of time and the boost will come back
faster.
What you were told sounds like bunk to me!
Dan

----- Original Message -----
From: "Dan Smith" <sad_rocc@yahoo.com>
To: "The Scirocco List" <scirocco-l@scirocco.org>
Sent: Monday, August 30, 2004 10:14 AM
Subject: Re: Lightened Flywheel -2.0l 16v


> 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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