Which Flywheel?
I getting ready to out a new clutch in my 95 4dr GSR and some of my friends are saying I should put in lighter flywheel. Sounds good, but how light is too light. Help me out here guys!
Folks have varying opinions on what the best flywheel is.
The weight range for aftermarket flywheels is about from 8 to 12 lbs. I think the stock flywheel is something like 17 lbs while the ITR flywheel is 14 lbs but I'm not positive on those numbers.
There are also two methods of building them: either a forged one-piece chromoly steel unit or an aluminum unit with a replaceable friction surface (a clutch can't grab on to an aluminum flywheel). The difference here is that the aluminum units tend to be a bit lighter, and to service them all you do is replace the friction surface. The chromoly steel ones are a generally bit heavier, they have to be resurfaced or replaced for service, and they have a higher heat capacity.
Which one you choose is pretty much personal preference; they're for the most part all good. Personally I'd be inclined towards a chromoly steel one with a weight somewhere just a hair under 10 lbs. The two flywheels I know of which fit the bill are Exedy and Kaiten Karui (not Super Karui--it's lighter).
The one thing which would push me towards a lower weight is if I was running some kind of big brake kit with rotors that are heavier than stock. That's more weight for the engine to spin up so I would use a flywheel more around 8 lbs to compensate.
The weight range for aftermarket flywheels is about from 8 to 12 lbs. I think the stock flywheel is something like 17 lbs while the ITR flywheel is 14 lbs but I'm not positive on those numbers.
There are also two methods of building them: either a forged one-piece chromoly steel unit or an aluminum unit with a replaceable friction surface (a clutch can't grab on to an aluminum flywheel). The difference here is that the aluminum units tend to be a bit lighter, and to service them all you do is replace the friction surface. The chromoly steel ones are a generally bit heavier, they have to be resurfaced or replaced for service, and they have a higher heat capacity.
Which one you choose is pretty much personal preference; they're for the most part all good. Personally I'd be inclined towards a chromoly steel one with a weight somewhere just a hair under 10 lbs. The two flywheels I know of which fit the bill are Exedy and Kaiten Karui (not Super Karui--it's lighter).
The one thing which would push me towards a lower weight is if I was running some kind of big brake kit with rotors that are heavier than stock. That's more weight for the engine to spin up so I would use a flywheel more around 8 lbs to compensate.
I road in an NA gsr with I believe a 9lb flyhwheel, I could very well be wrong, but it was pretty light and it was aluminum. Well, anyway, it sometimes tended to stall so if you go real light, I think you might have to raise your idle.
Originally Posted by teg_fan
I road in an NA gsr with I believe a 9lb flyhwheel, I could very well be wrong, but it was pretty light and it was aluminum. Well, anyway, it sometimes tended to stall so if you go real light, I think you might have to raise your idle.
Hmmm, i have an ACT prolite flywheel that weighs in at 8.8 on my GSR. I haven't discovered any problems with stalling....
Originally Posted by teg_fan
really? the gsr I was in might have required some further tuning to keep it from stalling. How do you like your flywheel, what are your opinions on it?
I really like it. It's my favorite mod to this date and made driving a completley different experience. The way my engine climbs to higher RPM's below 3k is great for city driving. I got a really good deal on a clutch and a flywheel at www.modacar.com
Originally Posted by teg_fan
really? the gsr I was in might have required some further tuning to keep it from stalling.
Sometimes takeoffs from a stop become a bit trickier when you go towards the lighter aftermarket flywheels, but for many people they're no problem to handle around town.
I have the ACT StreetLite Flywheel on my 96 GSR it weighs 12.5lbs. I got it for a good price at clutchcityonline the customer service was great and it arrived the day they promised.
I got a 9.5 lbs Fidanza. the car drives alot better!! IT revs quicker, and feels like it got alot more power. But yea it does stall a bit easyer now, not a big deal though, Not nearly as big as people make it seem.
Last edited by MrFatbooty; May 13, 2004 at 11:10 AM.


