Grimlock

i have a 12lb flywheel in my 88TII. what rpm would bet best for racing.

3500 rpm
4500 rpm
5500 rpm

?????

RETed

You do realize that a super light flywheel is detrimental to drag racing, right?



-Ted

fastrotaries

With my stock F/W i would launch at like 4,000 rpm's, but now with the 17 lbs steel i do it at 4,800 so i would recommend 5,000 and go from there. Traction is always the biggest issue though.

Node

iTrader: (1)

yeah, heavier are generally best for drag racing
but light flywheels are good for accelerating, less moving weight and inertia to ovrecome

Felix Wankel

About all a lightweight flywheel is good for is road racing so you can make your downshifts quicker

Node

iTrader: (1)

hmmm , understandable but what about acceleration since its spinning to higher RPMs faster

FEDREX

That's odd because when I had mine installed my car miraculously became faster and offset the extra weight of my sound system.
I'll run an aluminum flywheel anyday...(mine's 9.5lbs.)


Launch around 4500+ but you'll have to practice feathering gas and clutch balance. Too much = wheel hop. Too little = you'll bog. Once you have it down, you'll have good launches.

P.S. I have a local friend with an '87 TII(pristine condition 54K). He has the same thing I have and loves it.

Node

iTrader: (1)

a 2 stage ignition would be one way of battling the feathering gas and clutch if you dont feel like learning, but learning is better ;-)

Grimlock

well i'll stick with my jacobs node but thanks for the advice. 4000-4500 rpm sounds good. i did the mistake of taking off at 5000+ rpms and that was way to much. with a 12lb f/w those rpms jump up pretty damn quick, im gonna need a short throw shifter too.

well pratcice makes perfect.

thanks guys!

peejay

The best launching N/A guy I knew launched at 7k with a stock flywheel. (Street tires too!) I would assume then that with a lightweight flywheel the sky's not only the limit, but mandatory I could never launch as high as him because my tires would break loose first.

I think a light flywheel would be a GREAT advantage, especially in the lower gears... the tricky part would be actually launching the car. The launch is, of course, like 90% of your run... maybe use a stock clutch instead of an upgraded one, so the clutch slips and keeps the engine from bogging?

Turblown

iTrader: (12)

everyone i have asked about there lightflywheels said their times dropped alot, they said u just have to be a good driver in order to not let the Rpms drop too much. basically everyone i asked said it help their drag racing......