Originally Posted by dreaux

my break in took half a gallon and never went below 200. It is screaming like raped ape and still has tons of pinch. I have my method and for me it has worked better then any other suggested "method" that i have tried because of listening to people. There is no "X" amount of fuel that needs to go through a engine for it to breakin, as a matter of fact, i have found that the longer a engine takes to breakin and the tighter it is the longer it last. THe point is, the engine tells you when to lean it out and the motor DICTACTS how long it takes to break in, not the person with the screwdriver

I have a O.S. motor that has at least 7 gallons on it and it was the hardest tightest sleeve i have ever broke in.

This engine for whatever reason was very tight, i guess i am lucky! THis engine is going to LAST!!!

I have done many breakins, and have like many tried other peoples methods (even the break in bible), and have had engines suffer because of it. It's not rocket science, the method the "werks" gives at the beginning of this thread is the closest i have seen that i actually do. Start low, tune the lsn to your idle gap, NOT the other way around. when you start leaning up top, when the engine goes rich (which they do as the more they breakin), you lean it. Really easy, especialy the bullet needles on these italian motors.

Anyway, not trying to ramble on, there is no right or wrong way, it's whatever works for you and the way you like it.

They even have a WOT method, works for some but i would never do it.