Lightening my flywheel, any advice...
 

K so im wrapping up my build, should be on the streets again before xmas... Im gonna get my flywheel resurfaced and I figured while its off why not shave of a pound or a few. Just had a few questions first. How much weight should i drop? Im running a mini ram w/ a 48./.60 TDO4 so im thinking lag isnt gonna be a major issue. I was thinking bout just shaving maybe 2 pounds, at that... will it really matter? How much am I looking to spend? Anyone got any advice or wanna put in theyre 2 cents?

Re: Lightening my flywheel, any advice...
 

my two cents :

bring the friction surface to an even and maximal thickness
take nothing from the centre at all
and remove as much from the outer edge as you can without compromising strength.

on my mazda flywheel i lost about 2 - 3 pounds following that regime

i did it to make it fit. the benefit isnt that great for normal use.

Re: Lightening my flywheel, any advice...
 

7.5 lb flywheel on the D/Holset.

No complaints.

Re: Lightening my flywheel, any advice...
 

OEM flywheel....no mods... just run Type R ---- :6


oh and for reference... the ITR one is just like fe3tcourier described... just weight removed from the outside and only a couple lbs...if i didnt already have an R one i would have just run a standard PR3...

Re: Lightening my flywheel, any advice...
 

lightened flywheels might be more geared to na setups, just run a extra psi :1

Re: Lightening my flywheel, any advice...
 

OP still clueless........I'm an -------........news whenever I feel like it or you can get off your sorry ass and SEARCH!

Re: Lightening my flywheel, any advice...
 

2 pounds isnt making a difference and most shops will charge around 100+for that work. better off just buying an aftermarket unit if you want to go that route. I always went to 12 lbs on factory d flywheels. Factory weight is around 18 lbs.

Re: Lightening my flywheel, any advice...
 

Just run the stock flywheel. Up the boost. Done.

Re: Lightening my flywheel, any advice...
 

Yeah, i wouldn't take off too much. I have a pretty light flywheel right now, and im gonna go back closer to stock soon.

Re: Lightening my flywheel, any advice...
 

I had a lightened flywheel on my a6, and I didnt like it at all. It would really fall off between shifts. Not alot but I didnt see any faster spool/revs. So I would def spend my money elswhere.

Re: Lightening my flywheel, any advice...
 

i like it a lot, and would definitely go there again, but it should be WAY down any list...

you have to be a better driver to drive normally with one installed, thats for sure.

Re: Lightening my flywheel, any advice...
 

I'd do it for increased engine braking and red light revving/2-step works better. The question you need to ask is, do I want these things?

Re: Lightening my flywheel, any advice...
 

you'd be sorely disappointed. engine braking is due to friction and compression/pumping losses.

Re: Lightening my flywheel, any advice...
 

It has nothing to do with the momentum of the flywheel at all? Nevermind.

Re: Lightening my flywheel, any advice...
 

only if you are pumping the clutch :-) and if so, you would get less engine braking then anyway, and less stress on the box, less stress on the box when you launch too because less inertia in the engine for the drivetrain and clutch etc to take care of. all a non event anyway. stock is just fine. a little trim to tidy it up is a good thing IF done right.

Re: Lightening my flywheel, any advice...
 

Hadnt had a chance to reply to my own thread. Just got flywheel resurfaced and decided against lightening. Really dont think Ill have any probs w/ lag at all. Found a tustworthy GM specialty shop in town that would shave up to 5lbs. and balance it for 110 though. Good to know theres a place like that local. Thanx guys for all your help help. I always always trust anything Chris has to say. ;)

Re: Lightening my flywheel, any advice...
 

balance it to what RPM?

Proper step cut then balanced to 9k rpm is $175, look up old VW dudes for the work.

$175 for a stocker cut to 12.25 lbs and BALANCED to 9k rpm, or $200 for a 10.5 off the shelf unit you hope is balanced right.

VW air colled guy cut mine......

Re: Lightening my flywheel, any advice...
 

Imbalance is measured in mass, not rpm. if you have it within a certain tolerance, it will be happy to a certain rpm without exceeding a certain force on the bearings that hold it there. all three numbers need to be in that equation.

its totally meaningless to say "its balanced to 9krpm"

totally.