is a light weight fly wheel a really good thing to have or is it over rated. and what advantages does one have over a regular one.

 

lightened flywheel will rev faster

 

a lightweight flywheel also makes it alot easier to match revs and i think it just makes the car more fun to whip around.

 

search my friend, there are alot of mixed feelings about them, lighter = rev higher to start, u don't have the mass to keep you going as well as a heavier one (inertia)I couldn't decide so I kept with stock

 

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A lightened flywheel is an excellent 'bang for your buck' upgrade.
Your acceleration from zero rpm onwards will totally be enhanced with snappy throttle response. There's a variety of lightened flywheels such as the billet aluminum type or having your stock f.wheel shaved down at a local machine shop which differ in pricing.

From personal experience tho, you'll probably wanna try a 10-13lb flywheel. It's an upgrade you can totally feel and notice as soon as you start driving.

 

Not over rated, and well worth the money. No drawbacks that I have found in 20k miles since I got mine (8.8lb).

Cheers,
Sean

 

Not to mention the fact that a lighter flywheel will save you a few pounds off the total vehicle weight, which is always good.

 

You could always go with a Type-R flywheel. They weigh in at about 14lbs vs 18lbs for the GSR... I think.

Someone correct me if I'm wrong.

 

it a good thing...except possibly for turbo applications, cause it makes your revs drop faster while shifting and can make you go back out of boost. i got a 12lb one and i think its perfect

 

Going with too light a flywheel can, and has been shown, to cause idling problems. A heavier flywheel has more mass and thus more energy to keep things rotating than a lighter part.

Only a heads-up, not trying to sway you from it as I agree with whats been said.

 

if you plan on being boosted, not an upgrade one should think about?

I will have to be replacing my cluctch soon, so I thought I would take it into consideration...

 

That's all hearsay. I have 7.5lb flywheel with ACT XTSS. The idle is stock and to be quite honest; I didn't even 'feel' a difference. Technically, there is a difference, but I couldn't feel ****.

Apexi turboed D16

 

I have an ITR flywheel in my B16, and it's awesome. It's perfect for street driving, not too light.

 

I have a light weight fly in my Si. Its a ACT prolite... You can feel the diff with that fly and it will rev up quicker. I picked the ACT because it was cromolly and I basicly use it on the street with the exception of a few strip runs and did not need anything lighter. There are a lil bit lighter flywheels, some are made of aluminum and some of cromolly. There is speculation about aluminum flys being bad but i doubt it. Just remember lighter is not always better. Pick something for your application. Boosted cars will requier a lil bit heavier flywheel because of the more power output. Also a really light flywheel will be a lil bit harder to take off cause you need to rev the car up more to build up the inertia.

 

I stuck with the OEM 19# monster on my TC'd F. The whole aluminum thing scared me and I couldn't find a lightened steel unit for my app. Oh well.