heat gun/break-run-in
Im a year into nitro. iv had lots of help learning and still have a ways to go to be as smart as some. iv used many methods for break in and had some mis haps. lately things have been good on break in but i see lot of changes that iv made from the 1st engine iv broke in(w/help)to the engines im running in at the moment. my question is, how many people use a heat gun to heat the crank case up for the 1st start and maybe up through the first gallon? i had a pretty bad arguement w/an old freind thats been breaking in engines for 20+years about not heating engines up w/heat gun to start during break in. the engine in particular was an old resized, new bearings&rod mr ninja 21. all input is greatly appreciated.