simbo

hi all i am going to be changing my cluch on my 93 wrx for a ceramic one as it is going to be over the 300 bhp is it worth fitting a lightened flywheel ? if it is what is the best buy at the moment ?


cheers david

StickyMicky

i just fitted a 7.5kg exchange one from as peformance

vulnax999

iTrader: (7)

So have I Mickey, get car back today ( and Xtreme Scoobies light front pullies ) and we'll see how it goes.

Other flywheels seem to be very light billet flywheels, aluminium (??) or steel, around 4.5 kg - 6 kg. Std is around 12 kg.

Too light a flywheel may make starting off trickier as the engine may stall if you don't get the clutch bite just right, as less rotating mass to keep it going!

StickyMicky

mine even sounds diffrent when you crank it on the starter lol

you do get used to pulling away diffrently
im driving mine now like its never been changed

vulnax999

iTrader: (7)

Got the car back tonight, good job well done!

Not a problem pulling away from a stop, with new AP Organic clutch and ASPerformance lightened 8kg ( original ) flywheel work well together,
Gone is the awful judder from the main dealer installed Exedy clutch - they didn't do more than wipe the flywheel over with a stone and the car suffered since.

Need to push it tomorrow to see how it goes on the move...

Sexy Xtreme Scoobies lightweight pullies went on too, so even lighter rotating mass!

StickyMicky

how do you think it drives?

alyn wieghed mine while i was there and it was 7.5kgs

i didnt relise they did diffrent wieghts?

stockcar

mickey...........there are mild variations when they are machined (dependant on the original condition, etc.)...........we always end up 7.5-8.0kgs..............

we are currently using a 'std' lightened flywheel in our own car at under 7kgs but at this weight it is getting a bit marginal i believe...................

alyn - asperformance.com

StickyMicky

does it scare you?

do you drive with curled toes incase it breaks free

TopBanana

LOL...

Mine weighed 8.1kg according to my bathroom scales Alyn. I know they overread by at least 25% so that comes out at around 6kg.

BTW, you should be receiving my exchange flywheel today.

simbo

so what price are the lightened fly wheels from as performance then i take it that the clutch face is skimmed to so no more clutch judder

cheers david

vulnax999

iTrader: (7)

Drives nicely and smooth, picks up well, haven't noticed a massive increase in speed but certainly no downsides.
Not stalled it or had problems pulling away so I think it will be fine.

I guessed the weight from general comments made, should be around 7.5 - 8 kg .. didn't weigh it!

Neil

APIDavid

iTrader: (4)

You'll have to fit a steel billet flywheel with a ceramic clutch; the ceramic bit rips cast flywheels to shreds in no time at all.

David APi Engines / APi Impreza

StickyMicky

i stalled mine last nite while sum chav went flying from the lights in a crappy astra

Peanuts

iTrader: (15)

sorry, got a lightened flywheel myself and stalled it twice the day I got it back (API clutch too ), ok now though so no "done by a crappy astra" here thank you

StickyMicky

yeah i nearly stalled mine as well when i first got it, but this is like 1 week plus later (after i had got used to it) and i still got caught out

he was in the wrong lane, i knew he was gonna make a move and cut me up, i was planning to pull away as normal then hoof it down the road, the only hoofing down the road i was gonna do was on horseback cos it wouldnt start up asap either

lads at work keep asking why im reving the car more when i go over the speed ramps (cant go over them in 2cnd like i used to without quite a bit more revs)

i am getting grief lol

Peanuts

iTrader: (15)

I do 100miles a day so bedding in was done in half a week