RX7 Guys need help
- Thread starter keith35
- Start date
I don't have much practical advise for you other than that in SW Div. we have some stout STU cars running and one rotary powered miata hitting the track soon.
In STL we have a smattering of ITA/SM miatas ... That's going to change ... The MW Div. STL field at Hallett looked like a larger field of the same.
Your car should be competitive in the STL fields , maybe not in the STU group unless it's developed.
In STL we have a smattering of ITA/SM miatas ... That's going to change ... The MW Div. STL field at Hallett looked like a larger field of the same.
Your car should be competitive in the STL fields , maybe not in the STU group unless it's developed.
I have a 88 ITS rx7 and want to run STL or STU..Help needed on my decision...any advice?
Keith V
Do you want to run, or do you want to COMPETE?
We run our IT BMW in STU because two of us share it - one in IT, one in STU. We have fun in both, and are under-prepped for both.
mbuskuhl
New member
I have a 88 ITS rx7 and want to run STL or STU..Help needed on my decision...any advice?
Keith V
EP if you plan on running many SOWDIV races, that's where you'll find the most competition. Port the motor and throw some slicks on it. I'll even hook you up with some used tires if you need.
Prof. Chaos
New member
I'm running STU in my 1990 RX-7. Chances are, you won't make minimum weight in STU (2,300# for a street ported 13b) unless you're doing a serious build, but you'll get within 100# pretty easy (that's where I am, and with some more cutting I'm hoping to get within 50#). STL has a minimum weight of 2,680#, so hitting minimum weight will require a couple hundred pounds of ballast.
By my math, the RX-7 will be very fast in STU, but if a well prepared piston-powered STU car shows up, you'll be beat. STU runs faster than EP, and since the allowances are almost identical in STU and EP for the street ported 13b FC RX-7, the best you can hope for is to run EP times. In STL, just look at what times ITS cars run compared to the STL guys and that will tell you how competitive you can be.
I chose STU because I wanted a lightweight car that was easy on brakes and tires...that, and with a rotary the price between STL and STU is a couple hundred bucks if you're going to be rebuilding the motor anyway since the only difference is a street port.
The caveat to this is the recent allowance to run a bridge port 13b in STU at 2,600#. I know nothing about bridge port power, so I don't know how that will stack up against the lighter weight street port cars. If anyone has an idea about that, I'd love to know.
By my math, the RX-7 will be very fast in STU, but if a well prepared piston-powered STU car shows up, you'll be beat. STU runs faster than EP, and since the allowances are almost identical in STU and EP for the street ported 13b FC RX-7, the best you can hope for is to run EP times. In STL, just look at what times ITS cars run compared to the STL guys and that will tell you how competitive you can be.
I chose STU because I wanted a lightweight car that was easy on brakes and tires...that, and with a rotary the price between STL and STU is a couple hundred bucks if you're going to be rebuilding the motor anyway since the only difference is a street port.
The caveat to this is the recent allowance to run a bridge port 13b in STU at 2,600#. I know nothing about bridge port power, so I don't know how that will stack up against the lighter weight street port cars. If anyone has an idea about that, I'd love to know.
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