Originally Posted by
Greenlee37
when these come back from a service, do they need to be broke in the same as a new motor? had a buddy call me tonight asking this question, and I wasnt exactly sure so thought Id check here...
Preheat before starting to a temp of at least 180 , I use competition heat engine warmer and it works awesome .
Perform 3 x 5 min idle sessions (heat cycles) on the starter box at 190-210 with head covered
Let cool between each cycle with piston at bdc
Then run 3 x 10 min sessions of running the car on the ground without head wrapped , body on the car just slightly rich of race tune at 190-210 . Be careful as not to over rev the engine , after this go racetune it on the track .
Be sure you richen up your needles a bit before starting engine back up . If you are running novarossi and you get lost on your needle settings I can give you a good starting point , just get a hold of me