funny that's a picture of my car in his aviator...

 

Sorry, I should have specified stick to stick cmparison. You have an auto, so you have more drivetrain losses do to the torque converter slipping. But look at your torque curve and compare it to the one above, you have a lot more power throughout the rev band. Acceleration is determined by area under the curve. Do you think with the dyno above, a car of the same weight could keep up with you? All the 6-MT MKIV BPUs that I have seen run 420-440 rwhp run the same traps you do. For what the autos lose in drivetrain losses, they gain at the track in being a lot easier to launch and control the boost in 1st. If you get an aftermarket converter and change the line pressures, it will bring that up some on the dyno. How many BPUs have you ever seen run a 125 trap? ...none. Andi couldn't even do that when his BPU++ was putting out 472 rwhp at 22 psi on race gas. It will take at least a small single(57-61) and race gas to get there. Peter Waterman had one of the best running stock fuel Supras. He had an SP57(60-1/O-trim) that put down 550 rwhp on stock fuel system at 26 psi and ran a 11.53@126. He ran 124 mph at 18 psi with about 500 rwhp. 400 rwhp in a 3500 lb car is obviously never going to get you there. (If you haven't guessed, I have been around the Supra crowd for a while)

 

while i understand your point about drive train lose and power under the curve, you must be out of touch with the supras lately go to the supra forums and you will find many bpu 6spd cars that trap 4-7mph more than my car.. theres a guy with a little over 450@ the wheels i believe, a couple weeks ago he ran a 11.22@125 i believe... i just copied this from his sig

11.10 @ 125mph - no n2o - trd stage 2 clutch
et streets - 463 rwhp 452 max torque



also, the guy your talking about above with the sp57 making 550rwhp could'nt drive if he only went 11.53@126.. not flaming but you do the math..

i'm not arguing with you about the dyno graph that was posted on the first page..just about your hp to trap speed comparisons..jay

 

Yep, I know all about the "drift" car. I am very much in touch with Supras. Look what Peter Blach just put down: 1131 rwhp and his car is street driven. A lot of people don't get noticed as much when you have SW, Walser and Clint around. I've seen his posts on Supraforums. This isn't apples to apples To start with, his car is much lighter hardtop, so it is definitely not a 3500 lb car. It is also a BPU ++ car and not just BPU. A normal BPU(boost controller, BCC, downpipe and exhaust) will put down 380-420 rwhp on pump gas at 18 psi. It still takes 558 hp for a 3500 lb car with a 200 lb driver to run a 125 trap. A typical leather/targa/winged with the jack and spare still in place will weigh close to 3500 lbs. You basically go down from there. A hardtop is 80 lbs lighter than a targa and hardtop Supras are rare. If it is wingless with the spare and jack removed too, it will already be under 3350 lbs. Did you notice the pic in his sig? You can see the absent of the headlight and a carbon fibre hood. You can get a lot of weight out of a supra if you want. Eric Hyman's small single(TS04) hardtop Street Mod autocrosser tops the scales at barely over 3000 lbs with no a/c, no rear seat, front racing seats, etc. Having a lighter car does help.

At 463 rwhp, you will have about 532 flywheel hp. With a race weight of about 3523 lbs(about what a MKIV hardtop with a lighter set of wheels and a lighter driver weighs), calculates by the same formula to run a 125 trap. This easily verifies the claim. You can use either of the NHRA calculators and you will get the same numbers. This is taking into account 15% drivetrain losses. According to the discussion on Supraforums, John has the record for the fastest track times of a stock twin car without NOS. This is the absolute peak to the rule, not the typical. If you look in the thread, most have never even run 11's. No one has matched his numbers, but keep in mind that most Supras are loaded targas. Even when you read the discussion on Supraforums on stock twin threads, everyone is saying that a typical 440 rwhp BPU++(not just BPU) is a 118-122 trap car in the same thread. For reference Andi's 98' BPU++ at 22-23 psi(race gas) put down 472 rwhp and ran a 122 trap. Andi's car weighed 3480(without driver and 17" CCWs) at the track BPU++. As a 424 rwhp BPU, he ran previously 117-118 mph traps. The fastest stock twin car(Class I) at TX2K4 only ran a 118 trap. All these examples are significantly more powerful than the dyno posted on this thread.

Going back to the original discussion, if you take his 463 rwhp BPU++ car and turn down the boost controller to make ONLY 400 rwhp, could you still run a 125 trap? Here is the really big test. Go to the dyno with his car and play with your boost controller adjustments until you only hit 400 rwhp. You will probably be running only 12-15 psi, so you could do this on pump gas. I don't know if he runs sequential or true twin(just swapping vacuum hoses), but the car needs to be set up true twin for this test for as much an apples to apples comparison. Weigh yourself with the car. Add lead weights until you hit a loaded weight of 3700 lbs. Now beat the hell out of the car powershifting every gear and see if you ever get close to the same 125 trap. This is what the issue is. Can a heavier car with a lot less power(15%) run the same speed? The laws of Physics say no and hence why the BS flag went up immediately.

 

http://students.ausd.net/aznkukuboi/qwk.JPG

 

i don't know where my head was... your are correct sir(Loren04G35) jay