RE: What is the best way to break in a newly rebuilt engine?

MountainMax

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RE: What is the best way to break in a newly rebuilt engine?

should I mix the oil injection rich for the first tank of gas or just add more oil to my gas? and should I go easy on the new engine or just keep it from extreme use for a while?
 

Is this a total rebuild, crank, etc.?

Did you bleed the oil pump?

The only reason that new sleds come with premix in the gas tank, is in case the oil pump has any air bubbles in it so this helps until the oil lines are completely bled out.

The theory I have always used on 2-strokes is break it in like you are going to ride it, otherwise don't do anything special just ride it like you normally would. One thing is to stop once in awhile and check your plugs and the tops of the pistons, just to make sure it is not lean or anything strange is happening. This has worked well on all my race bikes in the last 30 years.
 
I did do a total teardown, sent the upper case half out for porting as the cylinders, new coated pistons too. I coated the crank and oil passage in the base with oil, never put it back in the sled yet, I will bleed the oil pump as per the manual though.
 


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