Quote:
Originally Posted by pgfpro
To make this work you have to lean out the engine and increase the IAT temps drastically.
Example a 1.5L at
2000RPM
16.29 hg
70 IAT
14.7 A/F
BSFC .50
will make round 14.5HP
If we drop it to 0"HG it will now make 32.2 HP with the same BSFC. Actually the BSFC will get better but for now we will keep it the same. 32 HP is to much for light load cruising and the car will accelerate. So we need to lower the amount of air. So lets start with a much higher IAT at a 14.7 A/F ratio.
150*F = 27.9 HP
200*F = 25.8 HP
250*F = 24.0 HP
300*F = 22.4 HP
As you can see we need to also lean out the A/F ratio to get back to 14.5
150*F = 27.9 HP plus 29:1 A/F = 14.2 HP
200*F = 25.8 HP plus 26:1 A/F = 14.6 HP
250*F = 24.0 HP plus 24:1 A/F = 14.7 HP
300*F = 22.4 HP plus 23:1 A/F = 14.3 HP
Now this is just a example but it shows you need to lower the amount of
air lbs/min to make it work.
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Literally all i needed from tbe get go... now... curious what about.... both cars at same inHg.
Just for my last curiousity. Will the BSFC help?
Both cars cruising at 16.29 inHg.
Thank you again for bringing it to me Barney style.