Thread: SR Flywheels

I can get a really really good price on Spec products. That is what I will most likely go with when I upgrade clutch/flywheel/pp. I will add the information whenever that happens.

Sweet, I want to see pictures, weight and maybe the tooth count

I will do all of that for sure.

whats a more reliable flywheel the eclutchmaster aluminum or the f1 racing. just wondering

Sweeet! Thanks

I just found this thread and so far its pretty helpful. I just have a quick question, through out the thread i've noticed many people saying that a turbo car with a light weight flywheel combo, will spin the tires alot. My question is, say those tires are 15X7, would bringing the tires up to a 15X7.5 or 8 or maybe even a 16X7 or 7.5 improve traction/reduce tire spin?

Another thing, what setup would you recommend for a car that'll be autocrossed/drag raced? Right now, i'm thinking either a Fidanza flywheel with ACT disc and pressure plate, but i'd like to hear others opinions.

There is no such thing as a 15x7, 15x7.5, 16x7 or 16x7.5 tire. Those numbers listed are rim sizes and would have little or nothing to do with what you are asking.

There are 3 ways of slowing down tire rotation to improve traction.

1. Stickier tire - compund
2. Taller tire
3. Wider tire

Example of wider tire 205/50/15 to 215/50/15 to 225/50/15 ( this example while making the tire wider will also make the tire taller, I will tell you why later )

Example of taller tire 205/40/15 to 205/50/15 to 205/60/15

The calculation to get the diameter of a tire is very simple.

2 x width x profile / 2540 + rim size = Tire diameter

Example 2 x 205 x 50 = 20500 ( 20500 / 2540 = 8.07 ) 8.07 + 15 = 23.07


You can go to the link below and mess around with diffrent tires sizes. Get a calculator and go at it as you will understand what is happening by doing it yourself.
Tire Size Calculator - tire & wheel plus sizing

Yes light flywheel with turbo will spin the tires a bit more than just if you have a turbo. Guess what? Light flywheels free up engine power to go to the wheels. More power to the wheels equals more traction issues all things being equal. Guess what else hurts traction? A turbo. =P
The benefits of a light flywheel (easy rev matching, free power, faster engine accel and deccel) for me far outweigh the minor loss of traction at WOT in 1st and 2nd with 303 WHP. Also traction issues can, and in my opinion should, be corrected with lower boost not heavier rotating assembly.

Going with wider tires or taller tires will help gain some traction. Don't do 16" wheels. You want all the sidewall you can get.

For auto-x a light flywheel is a must IMO turbo or not. For drag racing it's a toss up. For most people a flywheel will help them assuming they change their launch style. There are a few rare cases where a heavy flywheel will result in quicker ETs.

Sorry, I meant wheels:o



Thanks for the info

I am personally going to go with a stock flywheel on my new turbo setup. Traction loss, increased clutch wear (faster revving comes at a price of faster deceleration, thus easier to slip it), harsher/harder drivability (which works as a great anti-theft device ).

You will be fine though, I'm starting to be more particular about a comfy daily