Aluminum heads

rumblefish360 said

I think that no matter what compression an engine has, adding pressure is almost always OK. Know your cylinder pressure! The draw back comes from two things. To much timing and/or not enough octane. Readjust your tune on the timing and it’s curve as well as the octane being used.

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Thanks! I did have it tuned and dyno’d a summer or two ago I’m not even sure how long it’s been time flys. I have a coworker who runs a blower car offer to lock out my timing but I’ve heard good and bad so I just left it. I was just thinking while I had the heads off anyway it would be a good time to switch to aluminum heads. And I just the 68cc would be a better option than 62cc. But I’m not a engine builder by any means. I do use a water methanol snow kit and I use the highest octane at the pump. But I may have gotten bad gas, I did have my foot in it way longer than usual when it let lose. Thank you for your quick reply.