I'm allowed to use a light-weight flywheel in my autocross bracket, so...

if I go with, say, a 10 or 11 pound flywheel...by the way, will a 10 pound flywheel still provide good power and daily drivability?...anyway, with that 10 or 11 pounder, will I just be able to bolt on the flywheel and go? Or will it involve me having to take the engine apart to have the crank and pulley balanced with the new flywheel? the car is a 91 CRX Si, if that matters at all. thanks

 

you dont have to do anything to ur motor to use a lightened flywheel.

 

Having the crank pulley balanced with the flywheel wouldn't hurt, but bolting on the flywheel shouldn't cause any issues.

 

actually i saw a little (little little little) wear on my 5th main bearing. had my clutchmasters flywheel for about 15k.
v

 

well, my tranny bearings a toast anyway, thanks to a heavy right foot, a couple accidental downshifts that shoulda been upshifts, and autocrossing. Thanks for the input guys

 

Hey if you install a light flywheel it will make ur motor run not so great! The weaght of the flywheel helps turn the crankshaft! so if you make it lighter guess what! it makes ur engine rev higher... but you get more wear and tean on all the parts of your motor pluss you lose top end power and you cant go as fast (AKA loss momentum!) This auto class is cool ****! If I were to buy a LIGHTENED flywheel I wouldnt go to extreme maybe a couple of LBS! just my 2cents

 

1. It doesn't make the engine rev higher, it revs faster
2. You don't lose any top end power at all, and you can go just as fast.
3. The motor will run fine
4. Every mod you make puts more stress on the engine

I have a 7lb flywheel on my integra, and wouldn't trade it for the world.

 

Ya ok dude.... Thats just what my instructor told me.... He has been a mechanic longer than you have been breathing so im gona take his word for it..... BTW dubster I got into sequia! cool **** eh?

 

From my experiences, mechanics don't know jack about modifying an engine. They know how to repair something that's broken. I've talked to so many mechanics that did good repair work, but wouldn't know the first thing about nitrous, forced induction, extreme all motor setups. I would rather take the word of people who have had the parts on their car, and for a long period of time...firsthand experience is the key. Sequoia is cool, isn't it pretty expensive?

 

Lightened flywheels affect rev speed, not rev limit. A lightened flywheel will reduce the amount of rotational inertia of the engine, but that only affects standing start take-offs when the clutch is engaged, not top-end power. Any time you run an engine harder than it was designed you increase the wear and tear, there's no avoiding it. Just because your instructor is a mechanic doesn't mean he knows what he's talking about. I've built enough engines in various power output trims to confidently stand behind what I say, and it sounds like he doesn't fully understand what a lightened flywheel is all about.