T04Eneedy

well after going to the TexasMile this past weekend ive decided to try it in my 2nd gen. i have a few questions about setting up such a vehical.my goal is to break 180mph-200 within a mile.i know some of you guys have experience with cars doing 150-180 in the 1/4mi


as far as gearing i think my car's legs are a bit too short to break 180-200 without turning it to 10k.i would like to keep a stock transmission, what rear end choices do i have?

as far as oiling system, i have a fairly stock oiling system on my 13bt(S4).just basic stuff like chamfered oiling holes,multi-window bearings,110psi oilpressure regulator and radiused oil galleys.do s4 oilpumps move enough oil to where i should be worried about sucking the pan dry?


i imagine would need on the order of 600whp to cross 200mph in a mile so have any of you guys with access to engine dyno's managed to make a 13b live above 8k while making 600-700bhp for roughly a minute?im thinking my s475 will be enough turbo for my needs

T04Eneedy

anyone?

dpf22

honestly, I don't think you will need anything bigger than a 62-1 or similar turbo to make those speeds in a mile. As long as you are not abusive(aka hard launch with slicks and high hp) , you can use the longer drive ratio from an auto N/A FC in the rear (3.9:1) and the stock n/a Transmission(also longer legs) to make the speeds you seek.
Other than oil cooling, I think your mods are sufficient for the oiling system. A large hot side on the turbo will help with heat and add to the top end necessary to make a top speed run. I also don't think that you would need more than 400-500hp to do this, but I am not an expert. This is just what it feels to me would work.

SENZA PARI

well first off, you are not going to be talking about one minute of time here, it should be more on the order of 30sec. Right now with my current set-up in my fd I am macking 620rwhp on pump gas. I have a gt42 turbo. I would deffinetly not go with a small turbo as the above person suggested, this is going to produce a lot more heat on everything in the car and heat your oil up to the moon. Also in order to keep inlet temps cool and prevent detonation I would recomend a methenol injection kit. your Intake will be ice cold after your 30sec run. Make sure you focus a lot on aero, no one does and I dont know why. I am also running the fd auto rear end and hit 147 in 4th gear in a heart beat, not sure how much room I have on top. Another way to solve the gearing problem is with your rubber. I know with my auto gears and my other hoosier tires on the rear the car has the gearing for 200+. Just somethings to consider. Hope some of that helps and let me know if I can help in anyother way.

T04Eneedy

yea its definitly not gonna be a min,i just over estimate lol! yea i was thinking meth injection would be a good way to go if i dont go with an air/water i/c. yea i imagine my 2nd gen isnt exactly the most aerodynamic thing in the world, but most of the kits out there seem to be for drift cars and make the front of the car look like a parachute. what motor is your engine setup and how high are you reving? i mean im not going out there to shatter any records just going out to have some fun and represent the rx7 community

SENZA PARI

The motor is a full bridge port, 24 psi, with the meth injection coming on at 18psi. We ran out of fuel, so this is at 7500 rpm. Stock shaft, bearings, intake manifolds. There's still alot of power to push out with more fuel, but thats the basic setup atm.
As far as aero is concerned, the biggest thing to consider would be lowering the car 1.5" or so, (were not talking "slamming" it), and creating an under tray. These two things will give you the biggest aero benefit. Each inch lowered is approx. .01 off your CD, so lowering the car 1.5" would drop your CD from .33 to .31 or so. The under tray will also keep your car planted at the high end. Small things like removing mirrors, covering side bumper ducts (under the blinkers) can give you a slightly slipperier profile. Don't worry too much about body kits, unless you're considering one anyway.