ORIGINAL: sparko
ORIGINAL: 02R6420
Lean it out! You dont need to wrap the head in those temps.
Don't listen to this horrible advice, when breaking your engine in you need it to run very rich. Like the others said above, heat it up with a heat gun and wrap the head in tinfoil.
I totally agree with sparko don't lean the engine out. Wrap the engine head with aluminum foil. You need to run the engine rich during break-in so wrapping the engine head with foil will help the engine get to and maintain temps above 200 degrees F. Once you have a few tanks through the engine running at temps above 200 degrees then you can slowly start to lean the engine with very small increments to help maintain those temps. Good luck.