hi tried the search function but it wont let me search the "in" part something to do with too few key words,so can anyone advise me on the best method to run in a new top end (beta techno) and what mixture would you recomend for break in thanks

hi tried the search function but it wont let me search the "in" part something to do with too few key words,so can anyone advise me on the best method to run in a new top end (beta techno) and what mixture would you recomend for break in thanks

Chubs,

You will probably get several opinions and there are slight differences between engine materials that may dictate minor changes in proceedures, but generally just take it easy for a few hours and riding easy sections seems to work well as it has the on/off throttle applications that help burnish off the very small, microscopic mountains left by the machining operations (the "valleys" are what holds the oil) and the appropriate heat/cool cycles that avoid local hot spots on the cylinder/piston that can create partial seizures.

Avoid heavy loads/high RPMs on the engine and make sure the coolant is topped off. I like to run a little more oil in the fuel, maybe 60:1 for the first tankfull but that's not absolutely necessary if your jetting is correct.

Breaking in a top-end (especially with a plated cylinder lining) is a lot less stressful on materials than a complete new engine.

Jon

excellent jon thankyou very much