Official Turbo Weight Loss Thread/ Lightest Turbo List
996 Turbo / GT2Turbo discussion on previous model 2000-2004 Porsche 911 Twin Turbo and 911 GT2. Sponsored By Vivid Racing
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Well considering no one has that exact combo, then yeah it would help, otherwise you can go through the chart find what you have and do it mathmatically and then post it. Asking someone to know your weight by listing a buncha stuff is ....well.....
Ive been wondering how weight loss translates in terms of hp so I did some rough calculations that might be interesting to you all. If you assume a 3500 lb car with 500 hp, each 100 lbs of weight loss translates to this amount of power. Math experts please correct me if im wrong.
So a 300lb weight loss is the equivalent of adding 47 hp if my calculations are correct. Interesting to note that going from 3500 to 3400 is only equivalent to 14.7 hp and going from 3100 to 3000 is equivalent to gaining 18.8 hp. It would be interesting to make tables like this for cars with 600hp and 700 hp and so on.
Ive been wondering how weight loss translates in terms of hp so I did some rough calculations that might be interesting to you all. If you assume a 3500 lb car with 500 hp, each 100 lbs of weight loss translates to this amount of power. Math experts please correct me if im wrong.
So a 300lb weight loss is the equivalent of adding 47 hp if my calculations are correct. Interesting to note that going from 3500 to 3400 is only equivalent to 14.7 hp and going from 3100 to 3000 is equivalent to gaining 18.8 hp. It would be interesting to make tables like this for cars with 600hp and 700 hp and so on.
Thanks for taking the time to post this....Now I am curious to see the hp gain if I where to take my 1000+hp Protomotive 996tt from 3879lb down to 2600lb's ???
Thanks for taking the time to post this....Now I am curious to see the hp gain if I where to take my 1000+hp Protomotive 996tt from 3879lb down to 2600lb's ???
Also interesting to note for those with a stage 2 turbo, if you want to have the same power to weight ratio as VRalex's current, heavy turbo you need to get down to 1940 lbs.
In our new tables of "horsepower equivalency" I wonder what part aerodynamics plays in high-speed performance? The frontal area, of course remains the same, but would the down force at high speed change with a lot of weight removal assuming the spring rates are not changed and also would the DF change depending upon where the weight removal occurred.
All you engineers and aerodynamicists out there--help.
Ive been wondering how weight loss translates in terms of hp so I did some rough calculations that might be interesting to you all. If you assume a 3500 lb car with 500 hp, each 100 lbs of weight loss translates to this amount of power. Math experts please correct me if im wrong.
So a 300lb weight loss is the equivalent of adding 47 hp if my calculations are correct. Interesting to note that going from 3500 to 3400 is only equivalent to 14.7 hp and going from 3100 to 3000 is equivalent to gaining 18.8 hp. It would be interesting to make tables like this for cars with 600hp and 700 hp and so on.
Most us drag racers here will agree that at those power levels and weights every 100lb reduction will net at least a .1 sec reduction in ET, maybe more. Does anyone have any hard data that would verify that a .1 or so reduction can be had for 14hp? Thanks,Kevin
__________________ TX Mile Results: 2.8MPH Slower Than Topgun
Most us drag racers here will agree that at those power levels and weights every 100lb reduction will net at least a .1 sec reduction in ET, maybe more. Does anyone have any hard data that would verify that a .1 or so reduction can be had for 14hp? Thanks,Kevin
Kevin,
This may be a pretty good number. I can't attest to it as most of my drag vehicles were considrably faster than the 10-second range. At speeds upwards of 200 in the quarter, the hundred pounds might have made a half tenth difference at the most, but at slower trap speeds, you probably have a valid statement.
I can remember adding over 200 lbs. one day to try to set a B/A national record, coming down from A/A, and the addition of the weight barely slowed us down at all. Of course another factor is where do you add or subtract the weight.
Some of my friends run Pro-Mod classes now and they tell me that a hundred either way is barely noticeable. As speed escalates, the number becomes less significant.
In the really go-quick world, cars can never have too much bite, only too little horsepower.
This may be a pretty good number. I can't attest to it as most of my drag vehicles were considrably faster than the 10-second range. At speeds upwards of 200 in the quarter, the hundred pounds might have made a half tenth difference at the most, but at slower trap speeds, you probably have a valid statement.
I can remember adding over 200 lbs. one day to try to set a B/A national record, coming down from A/A, and the addition of the weight barely slowed us down at all. Of course another factor is where do you add or subtract the weight.
Some of my friends run Pro-Mod classes now and they tell me that a hundred either way is barely noticeable. As speed escalates, the number becomes less significant.
In the really go-quick world, cars can never have too much bite, only too little horsepower.
Al, I wish I have the time and means to do back to back testing at the 1/4 mile with varying weights since it would produce very interesting data. I believe that these cars are far too hard to launch consistently to have repeatable results that would be meaningful. If I was confident I was getting the maximium trap and ET everytime then emptying the washer resevoir would be a bonus . Unfortunately, I have gone to the track and produced great traps, ET and 60 ft times....never all at once on the on the same timeslip though...lol. Keeps me going back....Kevin
__________________ TX Mile Results: 2.8MPH Slower Than Topgun
I guess I'll get my chance in a month or so to see how hard these babies really are for getting any consistency at the strip. I'm used to a 3-speed Lenco and a two-stage rpm limiter for very consistent launches. Well, I was used to it in 1984. :-) Never tried to launch ANY Porsche, much less a tt at the drag strip. Going to go once anyway, just to get some numbers.
From all I read, I'll really have my work cut out for me with a tt. Do you back into the water box and really get a good smoking burn-out in second gear before you go to the line? I would suspect that any tire you choose needs some good heat-build before going to the line.
. Unfortunately, I have gone to the track and produced great traps, ET and 60 ft times....never all at once on the on the same timeslip though...lol. Keeps me going back....Kevin
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