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Originally posted by DW100
I'd hope you didn't need 1 litre per minute for 157 Bhp as you soon empty your tank

Are you getting ltrs/hour and ltrs/minute mixed up?

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quote:

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Originally posted by umgrybab
You can calculate your theoretical power by calculating the energy in 1 Litre/60 seconds mixed with oxygen at the correct a/f ratio then multiplied by the efficiency of the engine (approximately 0.33). This will give you a power unit (Joule/second or Watts) that you will then have to convert to BHP.

Using the energy in petrol as 42.4 MJ/kg and the density as 0.74 kg/L we get 31.376 MJ/L
multiply this by 1 L/60 s gives us 522.933 KJ/s or 522933 J/s or 522933 W
multiply by 1 BHP/ 0.7457 W gives 701.265 BHP then multiply by efficiency of 0.33 gives a theoretical maximum power of 233.76 BHP, with the units i quickly googled.

But don't forget that your measurement may not have included the resistance of fuel line, filter, injector jets. This could be much lower once all of that is accounted for.

[Edited on 28/5/14 by umgrybab]

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Originally posted by coyoteboy
1 litre a minute is a fairly small engine, my 2 litre turbo runs 550cc injectors at 90% at Max load, 2 litres of fuel going a minute no problem.

Also, are you checking the pump loaded at full pressure or just open flow?

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