does anyone know how to work out a rough BHP figure using a 1/4 mile time and your cars weight, or whatever?

 

anyone?

 

for example 14.4 and 1800kgs. and 95mph, or something like that.

 

ben.

Ben,

 

Here ya go

http://www.turbofast.com.au/Drag.html

 

HTH

 

CheerZ,

 

Andy

Thats a very cool calculation. According to this your making 268 BHP.

 

 

BTW, the HP figure is WHEEL bhp.

What does ET stand for?

Extra Terrestial or AND if your French.

 

 

 

What does ET stand for?

 

cos his legs dont bend & he cant sit down!!

 

 

 

------------------

I feel the need, the need for speed!

Originally posted by Falkirkfan2002:

What does ET stand for?

 

Extra Testicle - which explains why he walks funny !

ok, i think that a standard gto weighs

 

3793 pounds.

 

- except i had about 40litres of fuel in the car. 40kg?

 

- plus big heavy 18inch alloys - an extra 30kg maybe?

 

- plus my big 75kg ass.

 

- plus the rear whale tale. 5kg?

 

so plus about 150kg . so, times that by 2.2 i think to get you pounds. = 330 pounds more.

 

so 4123pounds in weight at a rough guess.

 

so 273 bhp at the wheels - and thats at only 6psi.

 

but then again that doesnt really work.

 

because if you consider the guy that was there [johnnewcombe was it?] who had a 450 bhp ZX and ran in the mid 13's then that only works out to about 290bhp. and he's sposed to have over 400.

 

a z weighs 1570 kg, plus 80 for the person, plus say 30 for gas and a bit more for whatever, your looking at 1700kg times 2.2 = 3740 pounds. put in 13.5 into that table and you only get 300bhp. WTF!

 

or put in 14.5, which is a rough guess over what a stock zed might run and you get 240bhp.

 

don;t think that is very accurate.

 

it is bang on accurate in theory. But your not taking into account

A: your driving

B: weather

C: track grip

4: The condition of your tyres

 

so it wont give an exact figure, but according to your trap speed of 94 mph (this is the best indication of how much power you are making) the figure of around 268 wheel bhp was right.

The 'calculator' is bolleaux.

 

It is guess work stuff, the 'calculation' behind it is bogus.

 

Everybody knows what ET really stands for;

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.

.

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Expensive Turbos.

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.

.

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Empty Tank.

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.

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Easy Tarts.

Devil have you run the 1/4 mile at santa plop yet? Got any time sheets?