Has anyone lightened their flywheel? I've been reading up on it, and it seems that the disadvantages of lightening it would out weigh the advantages especially when my se-r is my everyday car. Now if I had two cars and my se-r was just a car that I raced, then I'd do it. I'm having my clutch replaced soon and I wanted to know whether to get it lightened when I have it resurfaced.

It is well worth it. I believe that JGY sells lightened flywheels on an exchange basis for $50. Look him up.

Robbie

Originally posted by DTyne
Has anyone lightened their flywheel? I've been reading up on it, and it seems that the disadvantages of lightening it would out weigh the advantages especially when my se-r is my everyday car. Now if I had two cars and my se-r was just a car that I raced, then I'd do it. I'm having my clutch replaced soon and I wanted to know whether to get it lightened when I have it resurfaced.

Sounds like you've been reading monkey writings.

Lighten it. There are no bad effects. It's not like you're going from 18 lbs to 4 lbs. Even my wife had zero problems with my G20 that first had a lightened OEM flywheel when it was NA and now has a JWT aluminum flywheel now that it has the DET.

IMHO people who come up with reasons why low mass flywheels are bad are people who are trying to come up with excuses not to buy one.

So, if you are doing a clutch job or taking your gearbox off, get it lightened. I wouldn't even consider doing a clutch job without at the very least installing a lightened flywheel, if not an aluminum one. Well, the only time I wouldn't is if it were illegal for a class I was racing in, such as SCCA ITS.

Dont skimp and have your oe flywheel shaved. They come like that for a reason. I am in no way against lighweight flywheels, I have one on the NX and soon to be on the 200SX. Speaking from personal experience It is not worth it. When I had my 300ZX Na. I had the tranny rebuilt, new clutch, and I figured the next logical thing to do in a quest for performance would be have the factory flywheel shaved. I went through not one, but two. The last flywheel I instaled was an aftermarket, and I loved it. The materials "grade of steel" OE are made of have to be thick and heavy. Thus improving service life. I think, don't quote me, Nissan uses an A36 steel. Aftermarket companies use A572-GR50 steel for theirs, and a good grade of aluminum, normaly aluminum. Sorry for the rant. Just my input. Your car, but if you do tell us how it comes out/

I would think that a part that rotates at an outrageous rpm like a flywheel were not PERFECTLY balanced or balanced as part of the short block, that it could cause problems...say...main bearings. I would only run a different flywheel if I were to have it balanced with the rest of my short block. Just my 2 cents.

I have a JUN lightweight one, I love it. Honestly it took all of 30 seconds to get used too. It just ... feels different. The engine will fall off or rev up a little quicker. Its very drivable.

Yeah I heard excellent things bout the JUN chromoly they got a 9pounder and an 11pounder. Fidanza sells an alumuminum one

B14's have a sensor on the flywheel. The Findanza does not. You will get a check engine light.

Steve

And it's pretty cheap, too.

I just picked up a 1991 G20 flywheel for $45 Canadian at a junkyard, dropped it off to a friend in Montreal on the weekend. He's paying $100CDN to have it lightened.

the feel that I get from you guys is to buy an aftermarket flywheel as opposed to having my current flywheel lightened. My car will be my everyday car for at least the next year, and I don't have a shit load of $$ to spend on it if something happens, so rather than take a chance I think i'll hold off. Anyone have any suggestions for the clutch that i should buy. I need to buy the whole clutch kit. I'm thinking about an ACT, but let me know.

Originally posted by DTyne
the feel that I get from you guys is to buy an aftermarket flywheel as opposed to having my current flywheel lightened. My car will be my everyday car for at least the next year, and I don't have a shit load of $$ to spend on it if something happens, so rather than take a chance I think i'll hold off. Anyone have any suggestions for the clutch that i should buy. I need to buy the whole clutch kit. I'm thinking about an ACT, but let me know.

Dude, if you're going to be doing a clutch job, get the flywheel lightened. It doesn't cost that much more. I used to pay $50 for surfacing, lightening, and balancing. Now it's $75, but that's still not much more than a resurfacing. It's one of those "while you're in there" things.

I got my throw out bearing, pressure plate, clutch and chromoly lightweight flywheel in one set from OS Gikken. Especially cause unlike alot of other clutches I can just rebuild the OS clutch with whatever parts I need. I paid $650 total for everything. I also drive my car to work everyday.

Originally posted by RNN14
I got my throw out bearing, pressure plate, clutch and chromoly lightweight flywheel in one set from OS Gikken. Especially cause unlike alot of other clutches I can just rebuild the OS clutch with whatever parts I need. I paid $650 total for everything. I also drive my car to work everyday.

Do they have a website?

There were a couple US shops who sold them but since the search engines are a POS I can't find anything in English.