Disadvantages of lightened flywheel

**simbadda54** · 13-01-2007 01:22 AM

Hey guys, my gearbox needs to be removed to get to some gay oil leak on the crankshaft or something and i was thinking of upgrading the flywheel since the gearbox is coming out anyways.

Firstly i was wondering if there are any disadvantages in having a lightened flywheel eg. wearing clutch faster etc. Also, would i need to upgrade anything else such as a new clutch

Cheers

**roar** · 13-01-2007 01:36 AM

revs will decrease quicker with lighter flywheel
with a typical lightened flywheel, throttling off at higher revs will feel like 30% braking...

your up and downshifts will have to be alot quicker, possibly putting more strain on the synchros...

lightened flywheels are also related to high flywheel noise (point in case...check out a supra with a lighter flywheel...sounds gross)

however, for most lightened flywheels on the market for street/wannabe racer cars, the benefits far outweigh the negatives

**czy_sol87** · 13-01-2007 12:33 PM

i got a spoon flywheel, there isnt much differnce i've noticed, it is a little more rev happy though

if u gonna change the flywheel, u might as well do the clutch, as it will be cheaper cause the box is already out
theres no point of changing the flywheel, the in a couple of months u need to do the clutch, might as well do everthing at once, and save a bit of $$$

**Zilli** · 13-01-2007 01:18 PM

i agree, you might as well do the clutch since its out, I recently got the TOda flywheel and exedy organic clutch and i love th way it feels. Nice and responsive... wasnt earth moving stuff, but the car feels really nice

and yes, they are noisy

**silver_screen** · 13-01-2007 01:35 PM

Dont forget that if your going up a hill, and your in the wrong gear.. the car will decelerate very quickly

**aaronng** · 13-01-2007 01:57 PM

Originally Posted by silver_screen

Dont forget that if your going up a hill, and your in the wrong gear.. the car will decelerate very quickly

Not if you are applying throttle. If you apply throttle, the car with a lightened flywheel will accelerate up the hill quicker.

**silver_screen** · 13-01-2007 02:05 PM

only if ur in the right rev range.. if ur not... the engine will not have enough momentum to continue going up the hill

Drop a gear and its a different story

**aaronng** · 13-01-2007 02:36 PM

Originally Posted by silver_screen

only if ur in the right rev range.. if ur not... the engine will not have enough momentum to continue going up the hill

Drop a gear and its a different story

Oh yeah. But even with the stock flywheel and you are in the wrong gear, you'll still lug the engine and not accelerate.

**simbadda54** · 13-01-2007 02:41 PM

I actually got the clutch changed about a month ago so im kinda pissed off that the gearbox needs to be taken out again. I was also thinking of getting some extractors but people are telling me a new flywheel is better. Im getting the fidanza one off yonas at JDM Yard

**czy_sol87** · 13-01-2007 02:58 PM

Originally Posted by Zilli

i agree, you might as well do the clutch since its out, I recently got the TOda flywheel and exedy organic clutch and i love th way it feels. Nice and responsive... wasnt earth moving stuff, but the car feels really nice

and yes, they are noisy

what kind of noises are u getting cause, im getting weird sounds out of mine as well
kind of like a scraping or squealing sound when taking off
or is that my ceramic clutch???

Originally Posted by silver_screen

Dont forget that if your going up a hill, and your in the wrong gear.. the car will decelerate very quickly

dude its not that bad
a light weight flywheel doesnt mean that every time u tap the accelerator its gonna redline or when u let go of the accelerator ur gonna slow down to zero in a second

**VTi_b0i** · 13-01-2007 03:04 PM

you slow down less when u let off the accelerator...it REDUCES compression braking...

**silver_screen** · 13-01-2007 03:17 PM

yes but because the flywheel has less weight, it carries less energy. Momentum is what keeps a car rolling after you finished accelerating..

its harder to slow down a heavier flywheel than it is a lighter one, hence why u decel quicker.

As for aaronng, with a stock wheel u may still lug the engine but it will carry on further due to its great weight.. cmon man u should know already!! its simple physics!