RX7Club.com - Mazda RX7 Forum

RX7Club.com - Mazda RX7 Forum (https://www.rx7club.com/)
-   Rotary Drag Racing (https://www.rx7club.com/rotary-drag-racing-167/)
-   -   How to get a good 60ft in an FC? (https://www.rx7club.com/rotary-drag-racing-167/how-get-good-60ft-fc-876987/)

PDF 12-07-09 02:23 AM

How to get a good 60ft in an FC?
 
Does anyone have any tips for getting an FC to hook up?
I'm fairly sure the instant center can't be changed so I probably can't do much there. Shocks are cheap single adjustables and it has platforms front and rear.
Engine is an n/a 13b pp with about 300hp, trans is FD, rear end is 4.78.
The 60ft is 1.65 -1.7 on 26x10.5x15 ET Streets. Tire press about 14psi hot. ET is 12.2-12.3 at present.
The back end drops a little but the front doesn't really lift much at all. Launch rpm is about 9500rpm.

I'm wondering if there's an approx ride height that gets the instant center ball park...

Any tips people?

Trots*88TII-AE* 12-07-09 12:50 PM

is it a stock rear end or solid?

PDF 12-07-09 02:34 PM

The diff center spider gears are welded solid, and the rubber bushes have been replaced with hard plastic.

junito1 12-07-09 03:09 PM

The rear should drop a lot during launch with stock suspension.

You said you changed the stock ones shocks?

PDF 12-08-09 03:20 PM

Yes the shocks are adjustable. The settings haven't been changed yet though. The rear end drops some, but I wouldn't really call it a lot. The front doesn't appear to lift at all.

junito1 12-09-09 02:44 PM

I bet it handles really nice.

YOu know what to do. Start playing with the shocks.

donrotor 12-11-09 05:38 PM

play whit the shocks, tray using softer spring in the back, and harder in the fron, check if the camber is too negative,


All times are GMT -5. The time now is 10:23 PM.


© 2024 MH Sub I, LLC dba Internet Brands