How much horse power is in 1 psi?

[nightstocker99]

How much horse power is in 1 psi? I was told that 1 psi = 6.25 hp

99 Eclipse GS = 140
99 Eclipse GST = 210

what is the stock boost - 12 stock PSI (not to sure what it is)

6.25x12=75

so then 140+75=215 (Close Enough)

Does any one think this is correct?

Ref: http://1000q.dsm.org/

Thanks Brandon

 

[oldman]

Are you serious, don't talk ever again.

Play nice , I think he got the point.

Remember the equation PV = nRT

P = pressure
V = volume

The volume of the "system" is a constant in this case, as we aren't making any modifications to the vehicle other than increasing the pressure produced by the turbo. R is a gas constant and n is the number of moles of gas.

T = temperature

So, all we really care about is the relationship between T and P. As you can see, there is a direct relationship between pressure and temperature. This tells you that as you increase pressure, temperature will also increase. The result is that any increase in pressure is accompanied with an increase in temperature. This increase in temperature increases knock, pulls timing and ultimately reduces overall power.

You're forgetting the fact that although volume is a constant, density therefore mass of air (n) isn't. The key is to minimize increase in T while increasing P in order to maximize the increase in mass of air.

 

[L2RTSiAWD]

A poll didn't need to be added. I think the points were made and question answered. No need for anymore interpretation.