Originally Posted by
Davidka
You've already got it. Use a heat gun to get the engine up to 160f or so before starting and wrap the head with foil to keep heat in the engine so you can run it rich while maintaining the temps you're looking for(~200f) and run the engine for 4 minutes at a time letting it cool between runs with the piston at BDC. Do that 4-5 times and start running the engine on the track at leaner settings.
OK I have already done 4 or five cycles where I ran the car for 2 to 3mins then shut it off and cooled all the way down. I used about 2 tanks total doing it this way.
Is that enough break-in or do I need to do a little more? I am shipping it to powerhousercperformance to be modded and I wanted to make sure it was break in before I send it.