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-   -   Lightweight flywheel for NA drag race? (https://www.rx7club.com/rotary-drag-racing-167/lightweight-flywheel-na-drag-race-1082057/)

befarrer 04-16-15 09:59 AM

Lightweight flywheel for NA drag race?
 
I have a 12lb steel flywheel and I am wondering if it will be beneficial to install it in my truck in place of the stock flywheel for drag racing. I have a spec stage 2 clutch, and I will be drag racing with all season tires and open diff in a B2200. The engine is a S4 13B and has a full exhaust including header, mildly ported intake, all emissions removed, including all cats, ports are stock, and my aux ports right now are wired open. I have heard that the stock flywheel is best for drag racing to get better launches, but that is for people running turbo's and good tires. I have all seasons, and a lot less weight back there, wheel hop shouldn't be a problem as I got a solid axle with leafs. I have heard that a lightened flywheel really helps on a NA for acceleration, so what I loose in potential wheel spin off the line I may gain in acceleration. I am just drag racing for fun, nothing competitive. Hoping to install a Kia Sportage gearset in the axle too.

Cosmo_TT 04-16-15 03:25 PM

Light flywheels do help with revs and acceleration but it also helps with deceleration so that means as your clutch starts to grab on launch it's easier for your motor to drop rpm out of your preferred launching rpm that you intended on, a heavier flywheel takes longer for Rpms to drop, therefor keeping you in the prime sweet spot to keep that power up during launch.
But it baffles me why you are worrying about launching yet you are running all season tires, get some drag radials and make it hook first, then deal with making it launch harder..
Good luck!!


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