Originally Posted by kod99
Gonna do a compression test and a cold and hot leakdown test on Friday. I talked to my engine builder and he can't figure it out either. He has been building high HP drag race engines for a long time and he said the only time he has problems is with alcohol engines.
If the compression and leakdown tests indicate the motor is in good shape, I will put on a carb and regulator and run race gas on the long weekend.
I have a question.
What would an engine builder do differently if he was building an engine for alcohol as opposed to building and engine for race gas?
Couldn't you run either fuel in the same engine? I mean, the configuration may not be optimum for both fuels, but I would think the engine would run reasonably on either one. Am I correct?
A good engine builder changes which cam he runs on alky and gas. But you can run gas either way, sometimes a alky engine will cause a pop/miss and require a cam change.