flywheel?

[mmm240]

I like to shift fast so I like the revs to drop fast. How heavy is the factory CA18det flywheel?The shop that is doing my swap advised that I stay away from a lightweight flywheel because you don't want to lose to many revs. Makes sense to me, but as long as you shift fast enough it won't cause a problem.So who is using the stock flywheel? Does it work well with a performance clutch?I have I beleive a puck type clutch that I would like to use. I say beleive because it is very hard to find info about this clutch. I purchased the car with it, it's a clutch specialties stage 3. Said by previous owner to handle 400ft/lbs. I beleive him cause it is unpleasant, but fun at the same time.

[float_6969]

Stock flywheel ~ 27lbs

JUN ~ 13lbs

Tomei ~ 12lbs

I've been daily driving the JUN flywheel with a SPEC Stage 3 6puck clutch for years and it's fine.

You'll love the lightweight flywheel, I do.

[mmm240]

I'm having trouble tracking down a flywheel. Where did you get yours?

[themadscientist]

A lightweight flywheel helps you rev quicker. Mine sounded like a sport bike, you could have used the tach needle for a catapult.

[mmm240]

I know how they work, but I've never driven without one. I like to shift quickly and am wondering if the stock flywheel will annoy me by not allowing the revs to drop as quickly. I'm wondering if I should just spend a few hundred bucks on one right away. I would like to use the money towards other parts if the stock flywheel won't be a huge bother.

[themadscientist]

why do you want revs to drop? You want to stay in the powerband not fall out of it.

[mmm240]

smoother shifts when up shifting

[themadscientist]

I've driven both, the light flywheel has only one shortcoming, launching. The light flywheel cannot store the energy that the stocker can. This means you must set your launch RPM higher to get the car in motion without falling off the powerband when the tires hook. After that the stocker is the loser in every respect.

[mikerbike]

A lighter weight flywheel will help drop revs quicker. When you let off the throttle, the engine wants to slow down, since it's pretty much been turned into an air pump with a closed inlet valve. The heavier flywheel has more centrifical (or ?centrifugal?) motion, inertia, momentum, whatever to keep spinning. That's also why heavier flywheels are better for launching, like Madscientist said.

[float_6969]

I've driven both, the light flywheel has only one shortcoming, launching. The light flywheel cannot store the energy that the stocker can. This means you must set your launch RPM higher to get the car in motion without falling off the powerband when the tires hook. After that the stocker is the loser in every respect.

He nailed it. You'll have to launch at higher RPMS and modulate the throttle more to keep from spinning too much, but other than that, it's better in every respect. Maybe more throttle/down shifting when climbing hills.

Get the flywheel, you'll be glad you did. Especially if you're doing clutch work. Don't forget the NISMO Pivot bolt either!