this is dumb, but do auto tranny cars have fly wheels? what does a lightened flywheel do? and which is better? 200$ from corksport or the 4650$ one from srmotorsports.com?

 

NO, auto tranny's do NOT have a flywheel. they have what is called a flexplate. which the torque converter is bolted to.

By lightening the fly wheel...you decrease its mass. THUS it takes less power to spin it, and it makes it EASIER to spin it....thus it will allow your engine to rev faster.

I don't know anything specific about the two flywheels you mentioned...so I won't comment on that question.

 

DAMN....I got the NAME wrong.....but Edwin...by your own statement....they DON'T have a flywheel...they have a driveplate! lol and that was the question, now wasn't it? lol :{D damn symantics!!! lol

the statement about lightening it is still valid and true though.....

I have never heard of putting a lightened DRIVEPLATE on an auto though....but I guess if someone makes them.....someone has....and it would give you the same effect as using one with a manual tranny....it would allow the engine to rev up faster.

 

Most of the drive plates that I've come across are already pretty light. Since there isn't any friction surface like you would find on a typical fly wheel, there isn't as much mass there. However, I don't think replacing the already thin driveplate will offset the weight of the torque converter. Torque coverters themselves are pretty heavy (>30 lbs).

 

What's the downside of a lighter flywheel? Does it make it harder to engage the clutch at all? Do your revs drop faster when you lift off the gas? Will your hair start to fall out?

Do you gotta yank the engine out of the car to change it? Or is it something you can do from underneath the car?

 

downside.....will it start to decellerate faster? YES, because there is less mass/momentum. does it make it harder to engage the clutch? NO. will your hair fall out....not unless it has already started to.

another downside is....IF a flywheel is lightened incorrectly...it can physically weaken it structurally.

 

That and the inertial factor that the heavier flywheel provides (its harder to stop spinning). Flywheel kind of keeps the whole engine spinning along. But that is not usually a factor on engines with a decent amount of torque (ours). And if it is not properly balanced that is very bad.

 

Yeah, I remember when I got my FS-ZE, it had a "flexplate" on it. It had been in an automatic SPort 20. I have the Fidanza Flywheel on my ride now, and all that is said above about less weight to spin, and slowing down easier are correct.