[Mike V. Florida]

Wow, you go through all the time, trouble and expense of a "touring" engine and you keep the original head?

Anyway any good rebuilder will give you instructions on how to break in and seat everything. I would (and have) run the engine for just a few miles to bring the engine up to temp and then change the oil. This, while it might seem like a waste, will help insure that all the debris that might be left after the machining will be flushed out since the Model A does not have a filter.

Next, just run the engine at various speeds never staying at one speed too long so the pistons will seat properly (about 500 to 750 miles).