Engine power at 0.5 bar

[Billman]

can't really see how to use this tool. I had 34% DC with an AFR of 13 at 0.45 bar.

Don't know if I did it right but I came with 190hp.

[rst]

can't really see how to use this tool. I had 34% DC with an AFR of 13 at 0.45 bar.

Don't know if I did it right but I came with 190hp.

What size injectors you have and whats the fuel pressure?

[Ross]

I've found the turbo comparison calculator on 034 website works pretty well if you use JP's VE figures.

034 Turbo calculator

Using figures I played with for my engine I get around 200hp @ 6500rpm @0.45bar (AFR 12.0), up stroke to 92.8 and that gives 215hp. I am assuming a slight VE increase for my head work, using stock figures is about 15HP lower... so 200HP seems about right.

[prj]

IDC indeed tells a few things...
However, with meth, you would make 20% more power with lower IDC for example.
Same goes for dropped CR and higher octane fuel.

[Billman]

What size injectors you have and whats the fuel pressure?

630cc at 3 bar. I run 3.8 bar FPR.

[rst]

630cc at 3 bar. I run 3.8 bar FPR.

You made the calculations right. It is about 190 astonishing horses under the hood with that setup.

[Billman]

uuhhhh yeah. not bad for 6000 RPM at 0.5 bar where it is almost completely out of the compressor map....