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After a lot of tries I cannot get a better time than 13.43s for the 1/4 mile, most of the time I run about 13.8s or even worse. My best trap speed is around 115mph, which I think is okay. I have a BPU Supra.
Above times were measured with two (heavy) persons, almost a full tank of gas and some stuff in the car. I estimate the weight of the car to be around 4200lbs.
My question is how do my 19" wheels & tires influence the ET time negatively. I think they are a lot heavier than the stock 17" wheels. If I switch to 17" rear drag radials, how much would my time improve and would it make launching the car also easier? If it would be worthwile I will go for it, if only for bragging rights, saying I can do the 1/4 mile in 12.5s or so.
What if I run alone with an alomost empty tank of gas, the car weight would be around 3900lbs, how much would that save me in ET?
Bear in mind that these times are not actually measured at a drag strip but with a G-Tech Pro and a Blitz Multi Speed Turbo Timer (calibrated to +/- 1 km/h with a handheld GPS).
When I use the standard formulas for calculating RWHP I get more than 500RWHP (based on trap speed) and 343RWHP (based on ET). How realistic are these formulas? If I average them I get 424RWHP, which sounds right for a BPU Supra with a lightened flywheel or are these formulas unrealistic anyway?
Flavio
[ July 09, 2001: Message edited by: Flavio ]
Above times were measured with two (heavy) persons, almost a full tank of gas and some stuff in the car. I estimate the weight of the car to be around 4200lbs.
My question is how do my 19" wheels & tires influence the ET time negatively. I think they are a lot heavier than the stock 17" wheels. If I switch to 17" rear drag radials, how much would my time improve and would it make launching the car also easier? If it would be worthwile I will go for it, if only for bragging rights, saying I can do the 1/4 mile in 12.5s or so.
What if I run alone with an alomost empty tank of gas, the car weight would be around 3900lbs, how much would that save me in ET?
Bear in mind that these times are not actually measured at a drag strip but with a G-Tech Pro and a Blitz Multi Speed Turbo Timer (calibrated to +/- 1 km/h with a handheld GPS).
When I use the standard formulas for calculating RWHP I get more than 500RWHP (based on trap speed) and 343RWHP (based on ET). How realistic are these formulas? If I average them I get 424RWHP, which sounds right for a BPU Supra with a lightened flywheel or are these formulas unrealistic anyway?
Flavio
[ July 09, 2001: Message edited by: Flavio ]