stock flywheel question.... real quick

[driftin8ez]

is it possible for me to ask the guy to lighten my stock flywheel when i get it resurfaced? About how should i ask him to take off? I'm on a budget it seems like a good way to get some more response out of the OL' KA.

[corn322]

yeah, it's possible, but you can't get too much taken off.

[Ubernoober]

Yes you CAN get too much taken off. Enough that it will weaken the flywheel.

If the shop has done it before and knows what they are doing simply ask them to resurface and lighten the flywheel. They should know what is safe and what is not.

[Thee 240sx Owner]

I did that with my car.. they call it a 2stage resurfacing.. the resurface the area the clutch will come in contact and then shave about half off the flywheel around it... but you really really really really really wanna make sure there are no major cracks and actually trust the shop doing it.. if you have one major crack in it and the resurface it and its still there.. by the time the shave it.. they are going to weaken the hell out of it

[p00t]

lightest ive heard the KA flywheel being machined down to is around 16 lbs

aftermarket flywheels are 11-12 lbs

[250sx]

Ive seen some shaved flywheels explode

[mackdaddy240]

considering the torque you lose from a lightened flywheel is it really worth all the time and money it takes to change flywheels? I decided against it on my car.

[p00t]

considering the torque you lose from a lightened flywheel is it really worth all the time and money it takes to change flywheels? I decided against it on my car.

you dont lose torque from a flywheel. the heavier the flywheel is the easier it is to get the car moving from a standstill because the flywheel effectively stores some of the energy it took to get it spinning, which in turn you use to get the car moving. lighter flywheels are somewhat harder to use because you have to feather the gas to use more engine power to get the car to start moving, since there isnt a big heavy flywheel helping the engine out.

however it takes energy to get it spinning, so the heavier the flywheel the MORE torque and power it will rob from you. on dynos cars gain torque AND horsepower from lighter flywheels over the ENTIRE range of the power band.

Lightened FlywheelPros:*faster acceleration, more power*tends to wear clutch less (engine speed matches input shaft speed faster when you let the clutch up, big difference with engine braking)

Cons:*Slightly rougher idle*harder to get the car moving from a standstill*$$$