Anyone install the AWE lightweight flywheel and any comments on driveability?
04-12-2002, 09:39 PM
#2
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I can comment on my last car - turbo AWD Eclipse. Stock flywheel on the turbo Eclipse is about 18 lb
went with a JUN chromoly that was just over 10, so BIG difference in weight. The car was much more enjoyable to drive, launched easier in normal driving and rev'd alot quicker. Where it got beat up was on a harsh drag race style launch. Just would not launch as hard with the light flywheel (probably would have been great on a 2WD car). The DSM crowd considers a light flywheel a roadracing mod. The DSMers have also had bad luck with aluminum flywheels - warpage.
04-13-2002, 04:25 AM
#3
Re: JUN flywheel never worked well on the Eclipse..
The Fidanza aluminum flywheel is the one to get. i wonder if they make one for the S4?
Quote from Jeff Hill's web site.
This flywheel is CNC milled from aircraft quality aluminum and features a replaceable, laser cut hardened steel friction surface which is held in place by 20 fasteners. This is over twice the number found on other aluminum flywheels and insures that it will not warp. It comes with a new starter ring gear pressed on and the entire unit weighs only 8 lbs. The 10 lbs. decrease in rotational weight translates to faster turbo spool up and quicker engine revs overall.
Every year the 2.0 liter motor has been making more power and has been pusher further past redline. With that, we have seen a steady increase in the number of stock lightened flywheels that have shattered under load. As a result, we will no longer sell, install, or resurface a stock lightened unit and always recommend using a scatter shield
Quote from Jeff Hill's web site.
This flywheel is CNC milled from aircraft quality aluminum and features a replaceable, laser cut hardened steel friction surface which is held in place by 20 fasteners. This is over twice the number found on other aluminum flywheels and insures that it will not warp. It comes with a new starter ring gear pressed on and the entire unit weighs only 8 lbs. The 10 lbs. decrease in rotational weight translates to faster turbo spool up and quicker engine revs overall.
Every year the 2.0 liter motor has been making more power and has been pusher further past redline. With that, we have seen a steady increase in the number of stock lightened flywheels that have shattered under load. As a result, we will no longer sell, install, or resurface a stock lightened unit and always recommend using a scatter shield
04-13-2002, 07:24 AM
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I have heard of at least 2 Fidenzas warping (Doug Derby) but the JUN is bullitproof. Either way, I
was very happy with a lighter flywheel. BTW, the replacable steel friction surface on the Fidenza is a great idea. Just the aluminum in that application makes me nervous. I think an S4 could really benefit from a lighter flywheel.
04-13-2002, 10:58 AM
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When I was kid, the heavy flywheel thing was definetly the way to go for dragracing, because...
you wanted the intial rotating mass to help keep the engine from bogging down when those big slicks got hold of the asphalt. Especially with monster torque! Aaahhh, the days of 50lb flywheels! Talk about a good launch!!
Light flywheels are better for road racing which helps rev matching particulary on downshifts.
My .02
Light flywheels are better for road racing which helps rev matching particulary on downshifts.
My .02
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