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Discussion Starter #1
I have done a search on a few sites and cannot find a light flywheel anywhere... this car revs terribly slow and having light flywheels in cars I have owned previously really helped out... especially on turbo cars.<p>I know they have a dual mass flywheel or some crazy comfort thing like that but has anyone modified their stock flywheels? On the DSM I had there was a weight ring that when shaved would take off about 5 lbs. Can anything like this be done to the R?<p>Any help would be appreciated.
 

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Re: Light weight flywheel options?? (valves)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>valves</b> »</i></TD></TR><TR><TD CLASS="quote">I have done a search on a few sites and cannot find a light flywheel anywhere </TD></TR></TABLE><br>Probably because it's a bad idea. <p>So many better ways to improve performance, if that's what you're looking for.
 

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it's not a bad idea. someone here has swapped in an old 850 flywheel i think. can't remember if it was lightened or not. <p>i don't know of any aftermarket flywheels for the R though.
 

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Re: Light weight flywheel options?? (Dyno)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>Dyno</b> »</i></TD></TR><TR><TD CLASS="quote"><br>Probably because it's a bad idea. <p>So many better ways to improve performance, if that's what you're looking for.</TD></TR></TABLE><p>bad idea? please explain. My clutch went out and I am pulling everything apart anyway and I have never gone wrong with a lighter flywheel- probably one of my favorite mods on the dsm. Might not make the car run a quicker quarter mile but it sure would help give a little responsiveness to this slug of an engine. <IMG NAME="icon" SRC="http://www.vwvortex.com/zeroforum_graphics/screwy.gif" BORDER="0">
 

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Re: Light weight flywheel options?? (valves)

I'd be concerned about the following...<p>* The stored energy in a heavier flywheel can help launch a heavy, high-traction vehicle. Big-slicked, low-ish powered drag cars generally go with a heavier flywheel. Think of all the energy you can store up while the lights are coming down. That extra "free" energy is then available to you when you dump the clutch.<br>* This engine bogs badly when you dump the clutch. I'd expect that to get even worse (same statement as the first, essentially)<br>* The dual-mass feature is there to quell gearbox rattle. You DON'T want gearbox rattle<br>* Reduced resale value<br>* Bang for the buck. If you've already got things apart, that diminishes this concern<p>But still... Do the math. I did (once upon a time). Figure out how much horsepower it takes to accelerate the extra flywheel mass while the vehicle is in gear. It's really not accelerating that fast in terms of rpm per second, especially once you are out of first gear. The gains are insignificant compared to the downsides in my opinion.<p>By the way, I <U>have</U> converted from a standard flywheel to a super-light, race-quality muti-disc clutch on a previous race car. It did help with shift speeds and torque capacaity (the real reason I swapped), but all those downsides were there. It was a road race car. That clutch was a horrible thing to deal with when I took it to the drag strip.<br><BR><BR>
<i>Modified by Dyno at 4:51 PM 8-29-2008</i>
 

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Discussion Starter #7
Re: Light weight flywheel options?? (Dyno)

When you drag race you slip the clutch on an awd vehicle.. you dump it if you want to find the weakest part of the drivetrain and launch out of boost. At least that is how it is done on other AWD vehicles... still trying to figure this one out.<p>I am looking for responsiveness as I like to roadrace.<p>If I where looking for resale I would never modify anything and most likely would not be on this or other sites.<p>But thank you for the input. <IMG NAME="icon" SRC="http://********************/smile/emthup.gif" BORDER="0"> <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/smile.gif" BORDER="0"> I am still trying to figure this car out, I am still not in love with it.
 

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Re: Light weight flywheel options?? (valves)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>valves</b> »</i></TD></TR><TR><TD CLASS="quote">I am looking for responsiveness as I like to roadrace.</TD></TR></TABLE><br>I agree this is where you'd find the greatest benefit. Helps with upshifting and downshifting. I hope it works out for you. Keep us informed.
 

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Re: Light weight flywheel options?? (valves)

Take your flywheel to a machine shop. they should be able to lighten it 6 or so pounds. We've always ran either lightened or aluminum flywheels. & even a triple disc setup that had the flywheel incorporated into it. weighing less than the original flywheel by itself. a lightened flywheel will help you spool up faster . . . .but it will also dive off even faster when you lift off the throttle. at which time the car is going to try & plow if going into a corner. it takes some getting use to. but a def noticeable difference. if I was doing my clutch I'd have mine lightened for Sure.<p>........Dave
 

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Discussion Starter #11
Re: Light weight flywheel options?? (Scania)

The flywheel was like 45lbs!! the thing was crazy heavy. Wish I would have read about the machine shop earlier but I didn't see anywhere where they could take metal from... trans went back together earlier today.<p>Thanks for the advice.
 

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Re: (S60R MN)

can you please tell me where to purchase a lightened flywheel for the S60R? <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/tongue.gif" BORDER="0">
 
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