SCCA STR 370z Progress Thread.... It can be done!

[MIKE_STR]

Originally Posted by j-rho

Hi Mike,
How have things been going? Have to admit at the Farmington Pro in 2013 (was there in my '67 Camaro in STX) I remember seeing your car and thinking to myself "Hmm, a 370 would be fun in STR" - year and a half later, I have one, and am looking at STR prep.

Some questions I haven't seen clearly answered elsewhere, though there's still more research to do-

• Kinetix front upper arms can get enough camber with a little modification? Yes. I modified mine (cut them) to get a little over -3 camber in the front.
• Are any rear arms needed to get camber where we want it once lowered (something like -2 to -2.5)? maybe not. Just an FYI, I started with about -2.5 rear camber and have reduced that dramatically. The car just can't put power down with that much rear camber.
• Does the Uprev Osiris tuning capability close the throttles faster on lift? With the stock computer it seems to wait half a second to do so when you lift, which as a right-foot-braker, messes things up sometimes. it's funny you mention this... I just noticed it the other day. I had my car tuned already down at specialty Z. I didn't even think to ask him about it when he adjusted the throttle mapping. It just occurred to me literally a week ago that the car would keep the throttle bodies onen for nearly a second after lifting throttle. Definitely doesn't help rotation on lift like I like.
• What parts are needed to run 2.5" diameter rear springs with ride height adjustability in the rear? And what length spring assuming rates in the 700-850 range as a starting point?BC racing supplied the adapters / collars needed to run the 2.5 inch springs that I have. I've been very impressed with the ER series that they custom Valved for me.
• Is the 1.5-way OS Giken "the way to go" or has anyone found benefit to another option - either 2-way, 1-way, or another brand?i use a Cusco RS and like it. It's currently set at 60%
• Any "must do" bushings besides the rear diff? not really. Sure, I'd like to do the front lower control arm / rear bushings... But no one makes any that aren't spherical.

Not trying to muck up your thread, just thinking we can keep this the place people go for 370Z-specific STR info


Thanks!!!

Maybe just sell your stocker and buy mine.. I'd cut you a hell of a deal.