Not the advance design ones, the ones that cost around $500 without shocks

 

Hey- your buddy Gene here

M2 usually supplies 550 lb. front springs and 400 or 450 lb. rears, but you can choose anything you like. For example, Max Cooper uses 450 front and 250 rear.

I ran the 550/450 combo for a while, and this worked pretty well until I changed my wheels/tires. Now I use 650 on the fronts with the 450 rears (I was getting a lot of oversteer using 285-30-18 tires all around). This is, of course, very stiff on the street, but this way I don't have to upgrade or stiffen the front anti-roll bar.

BTW- I didn't notice any difference on the street with the 500 vs. 650. They both jar your fillings!

Gene
www.purplemantis.com

 

I ran the 550/450 springs for a while, too, but also found the rear end too loose. I put 250s in the back because that was what was around the shop I was doing some midnight tuning at before a track event. I also disconnected the rear sway bar. That setup had too much understeer, but I really liked the way I could get on the gas coming out of turns on a tight course. It didn't work well on a big, fast track, though -- too much understeer, and I think you need some rear sway bar to keep the car from feeling squirelly under braking. I reconnected the rear sway bar and I put the 450s in the front and caught a fender lip, so I think I will go back to 550 in the front and run 300 or 350 in the rear as my next setup.

-Max

 

I have road raced this set up since 97, and its what a lot of road racers use

650 front
450 rear
stock rear bar

mazda competition front bar (adjustable)

I can make the car understeer and oversteer with only the 5 adjustments on the front roll bar. For a tight track i'll soften it , and a high speed track i run it one away from stiffest.

Very drivable and balance-able with throttle.

I just finished the supra ttrotor/ corvette c5 caliper upgrade on the car and now the car has less push going into a corner as before the front end would dive as we had only upgraded the front brakes, and this created too much dive.

 

For those with the coilover kits, what shocks are you using and how do you like them? If you could do it all over again, which would you choose. Thanks

Andrew Lee

 

Andrew,

I use GAB Super Rs. These are decent shocks for autocross and road racing but nearly good enough to be really competitive.

If I had to do it over again (and I will), I'd go with at least a double adjustable shock. Probably Penske or JRZ.

Gene
www.purplemantis.com

 

gab super r. They are great, next time i would like to try bilsteins with custom race valving though.

 

M2/AD with 550/450 spring rates. Haven't been on the track with this setup yet.