johnboyjohn.pretious said:
Ive been reading the sites for weeks now and was very interested to read the different approaches to engine break-in, we call it running in. I cant seem to locate the thread but generally the theme was to break-in according to the Can am directive , or 'ride it like you stole it'.
Since you make no mention of brakes, I'll assume your interest is in breaking in the engine.
Directly from Spyder Operator's Guide:
-----QUOTE-----
During the first 1 000 km (625mi):
– Avoid full throttle acceleration.
– Avoid prolonged riding.
– If the cooling fan operates continuously during stop and go traffic, pull over and shut off the engine to let it cool off or speed up to let air cool off the engine.
-----QUOTE-----
As you can see, BRP's recommendation is pretty liberal -- basically avoid full-throttle acceleration and overheating. The admonition to avoid prolonged riding (in my opinion) should actually read avoid running the engine for prolonged periods at the same RPM. "Avoid prolonged riding" makes little or no sense to me...
I don't believe anyone who has studied the physics and mechanics involved will tell you to "ride it like you stole it" during break in, but the careful application of a method intended to increase in-cylinder pressures (essential to proper ring seating) will require moderate to heavy acceleration. Additionally, there is a great deal of evidence to suggest babying the thing could lead to increased oil consumption and reduced power/fuel economy.
For a good treatise on what you are trying to accomplish during break in read this:
http://www.mototuneusa.com/break_in_secrets.htm
I've used this approach to break in piston engines for motorcycles, ATVs, lawnmowers, generators, automobiles and even airplanes. So far, none of the engines I've run in using this approach have experienced abnormal oil consumption, none have been destroyed during the run in, and none have experienced an abnormally short life... honestly!
Regards,
Mark
