Replace Entire Engine as Preventative Maintenance?

[BYprodriver]

Since the current engine has 75hrs it "should" fail during the next race. For that reason I would change the engine prior to racing again. If it blows it will probably be useless for rebuilding, Where the current engine should be ideal to rebuild.

Try to find out how often the top racers have to "refresh" their engines to prevent failure. I assume you are having your used oil tested.