stock 4age flywheel weight ???

[AE85.6]

anyone know what lightened weights are good wouldnt mind a little lighter for quicker accelleration but dont wanna go soo light as too loose spinning momentum,

cheers

[Monsterbishi]

anyone know what lightened weights are good wouldnt mind a little lighter for quicker accelleration but dont wanna go soo light as too loose spinning momentum,
cheers

Lightest factory 4age flywheel I've come across was my '86 AW11 (bluetop 3rib) factory one, so far all the fwd ones I've picked up have been a fair bit heavier in comparison.

[AE85.6]

ah i see, well this would be for RWD anyways, but i mean i dont have any first hand knowlege of lightening them myself so wasnt sure how much lighter is suited to what ? cause i know if you go to light it has affects eg might not rev as easy going up a steep hill etc or is this only if its ridiculassly light ?

[Monsterbishi]

ah i see, well this would be for RWD anyways, but i mean i dont have any first hand knowlege of lightening them myself so wasnt sure how much lighter is suited to what ? cause i know if you go to light it has affects eg might not rev as easy going up a steep hill etc or is this only if its ridiculassly light ?

Only cars lacking in torque suffer from up hill stints, if your car can't hold it's speed uphill without opening the throttle considerably or dropping a gear, then lightening the flywheel is a bad idea...

What I meant about the FWD thing, is that of the various flywheels I've come across, the ones out of FWD engines were heavier than the ones out of RWD setup motors.

[TRD Man]

A std flywheel is 6.7kg.
TOM'S chrome moly flywheel for AE86 is 3.5kg.
TRD don't do a flywheel for this engine anymore. If I remember rightly their's was 4.5kg approx.

[AE85.6]

wow 6.7kg to 3.5kg wow thats a huge difference, that would prob suit a more tuned engine thou as mine is not ill prob not go that light must make it rev up bloody quick thou

just not sure how much weight = how much difference thats all

for example if i took off 1 kg, would that be very noticeable or only a slight improvement,

[Monsterbishi]

wow 6.7kg to 3.5kg wow thats a huge difference, that would prob suit a more tuned engine thou as mine is not ill prob not go that light must make it rev up bloody quick thou :twisted:

just not sure how much weight = how much difference thats all

for example if i took off 1 kg, would that be very noticeable or only a slight improvement,

It would be hugely noticeable, the thing about flywheels is that they are part of what's called rotational/driven mass, which means when they are stationary, they weigh xx, but the faster they turn, centrifugal laws come into play.

It's the same reason why we were able to drop a mates time on the strip down from 12.9 to 12.7 just by changing his wheels/tyres from 17's to 15's

[moo^^]

i lightened and balenced mine, FWD.. took about 2kg off it

unfortunatly it made it more temperate at low revs ($&#$% stock ECU's)

fortunatly it helped me rev from 1000 --> 4000 a lot quicker.. which for 4AGE is critical.. because there's no power untill after 4 anyway

note: didnt do it to my new car, only old 4AGE

[AE85.6]

sweet how much roughly did that cost too ? did it have any impact on high speeds or top end ?

[Stealer Of Souls]

It'd depend where on the flywheel you take the weight off too... If you take all the weight off the outer area of the flywheel it should spin up faster than if you took the same amount of weight off of the inside area of the flywheel...

And if I remember my physics right... taking off the inside will have less noticibly effect on spin up/spin down than off the outside... All in all you're still removing weight so will make differences all around...

Just a thought to chew on...

[AE85.6]

anywhere around Auckland do this that people can recomend ?
and any idea on price ?

[spencer]

It is sorta dodgy to get it lightened people will say its safe, and it probly is but ive seen heaps of pics of lightened flywheels destroying cars and think in a ae8* its by ya legs. save up for a decent cromo one

[NZ_AE86]

Yeah, lightening a factory flywheel too much can be frowned upon. You will get a Chrome moly(3.5ish KGs) or Alloy(3.2ish KGs) flywheel for less then $800. It is worth the expense.

[nite b]

Maybe 20v blacktop flywheel?lightest on a 4AGE, 5.5kg from memory.

Poss little tricky to find, but might be a cheap, safe option?

[AE85.6]

true, they go on no hassle ay, might be worth looking into then, but isnt a real urgent one at this stage, suspension first, get back on the road then few other bits and pieces then drive line freshup so will prob do then unless gearbox or clutch goes first then i will look at doing at the same time,