Propper engine break-in procedure
  • User avatar
    ajw9173
    Posts: 19
    Joined: Wed Nov 28, 2007 11:08 am

    Propper engine break-in procedure

    by ajw9173 » Sat Jan 30, 2010 6:32 pm

    I just had the valves done and am in the process of replacing the piston with a JE on my 07 450r. I've heard and read a lot of different ways to do a break-in. Many of which I find questionable. What is the correct procedure I should follow? Anything I should look out for? How important is "heat cycling"? Thanks in advance.
  • Asmith
    Posts: 14381
    Joined: Mon Apr 10, 2006 7:52 am

    by Asmith » Sat Jan 30, 2010 6:46 pm

    The engine break-in should be done as follows:

    start bike and warm up.

    ride the piss out of it for 20 minutes, keeping the rpms above 3000, varying the throttle, staying away from the limiter, and building as much compression as possible by using the engine as a brake (downhill sections).

    Let it cool 15 minutes.

    Repeat riding.

    Repeat cooling.

    Repeat riding.

    Repeat cooling.

    Change fluids and oil filter.
  • User avatar
    ajw9173
    Posts: 19
    Joined: Wed Nov 28, 2007 11:08 am

    by ajw9173 » Sat Jan 30, 2010 6:56 pm

    Thanks for the reply AS. I appreciate all your help.
  • User avatar
    Codeman00
    Posts: 745
    Joined: Wed Nov 21, 2007 9:17 am

    by Codeman00 » Thu Feb 10, 2011 7:19 pm

    If anyone wants to know why you break in an engine like the method above...high compression leads to perfect seating of the rings against the cylinder wall.
    Image

Who is online

Users browsing this forum: No registered users and 3 guests