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which is the best way?
Posted: Sat Mar 21, 2009 8:32 pm
by nysnowborder
to break in a new piston/rings on an 87 se50.
to go very easy on a load or........
leaving in the garage with fans on for high idle.?
Posted: Sat Mar 21, 2009 9:03 pm
by chevyguyjay
what i do is put a high idle and let it run for 20 min. 
Posted: Sat Mar 21, 2009 9:52 pm
by Kenny_McCormic
Proper procedure is to put put around the yard to warm it up and then proceed to constantly vary throttle, run it up to top speed and slowly roll it back down for a whole tank of gas. All under a load of course.
Posted: Sat Mar 21, 2009 10:11 pm
by burnt_toast
There must be a LOAD applied for proper break in! that is very key, recall reading it way back when.
Definitely ride, and start varying throttle right off the bat. Rings seat within first 15minutes, I consider fully broken in after 100mi. Keep varying throttle till then as much as possible and dont hold WOT for too long.
Posted: Sun Mar 22, 2009 12:06 pm
by Kenny_McCormic
My limited experience with breaking in engines tells me the first 2 minutes are when the majority of the fitting takes place.