Top End break-in

[gasIdaho]

Just finished doing a fresh top end for my EC300. This was my first time doing this sort of thing. It was pretty easy although it took me all day. Hardest part was getting it all put back together.

She kicked over on the second try though . What is the recommended method for break-in?

 

[Malcolm]

Hi GasIdaho

I have just completed doing my complete motor (main bearings , big end , small end and rings. I ran mine in 20 minutes slow,let it cool down to cold, another 20 minutes a little faster let it cool down to cold and then 10 minutes even faster but not full throttle. Each time warm the motor up slowly. I mix my fuel 40:1 and have had no problems