Having a flywheel lightened

[dhen]

Yes, I searched, but my question is different.

I found a shop here that charges less than $40 to lighten a flywheel. How much weight could I safely remove from a stock flywheel?

Thanks,

Darian

[boost_boy]

It's not worth it, man. Either get a true lightened flywheel or leave it alone. Not worth the money.

[dhen]

Thanks. I'm having them check mine out anyways, and was thinking might as well, but I'll take your advice.

Darian

[mdb4879]

I had a lightened stock flywheel in my E16 Pulsar that I bought from a guy in NY who ice raced B11 Sentras. He put it on a brake lathe and shaved 6lbs off the back side of it then had it rebalanced to "zero". It still weighed quite a bit more than an aftermarket lightweight flywheel, but it certainly did help. The motor was noticeably more responsive and revved up quicker, which made it easier to heel toe (keep in mind this was a 70hp motor, so every little thing I did to it was quite noticeable, lol).

But I don't think it'd be as beneficial on a CA unless you could do it yourself. The ring gear on an E16 is on the front of the flywheel (same side as the friction surface). Whereas it's on the back of a CA flywheel. So it wasn't a problem to shave a bunch of material from the E16 unit (I had an untouched one to compare it to and IIRC he took off like 3/8" from it). But I don't think you'd have that luxury on your flywheel. You'd have to take it out closer to the center and probably couldn't take off as much material/weight. Plus you'd have to figure how far out you could shave to to give sufficient strength for the ring gear and not have it prone to breaking due to shock. So if you want a significant difference then an aftermarket one would be the way to go.

Also, this is a reason some say not to lighten a stock flywheel:

transmission-explodes-how-does-this-happen-t3 ... l#p3829877

It may be a bit different when you're drag racing and dumping the clutch off the line at 8 grand, though. I felt completely comfortable with mine, but the guy I bought it from raced with it for like 7 years before he sold it to me and I was just putting it in a weak street car.

[dhen]

That's some scare s*** in that link. I'm staying stock...

[louiswun]

check out therse photos, it is lighten stock flywheel, photos are download from internet, does anybody still want to do it ?
http://www.facebook.com/media/set/?set= ... 988&type=3

[TheMAN]

there are limits to how much you can safely lighten a stock flywheel, not by much, but it can be done... is it worth it? that's for you to decide
Mazda shaved the flywheel for their very limited production Mazdaspeed Familia (JDM Protege) in Japan back in 2001.... they shaved off the backside down about 5mm... it reduced the weight by about 2lbs... a minor improvement but it allowed them to claim the car has a light weight flywheel without casting a new flywheel (they just used regular production stock)