break in for rebuild

[95and05]

OK I hear people all the time with differing opinions. drive it like you stole it or break it in slow or break it in like you plan to drive it for the rest of its life and so on. this is a thread to help me decide how to break in my fresh rebuild in a couple days.
I was going to put a poll here but I think if you guys type out opinions and why you think what you do it will help even more.
THANKS Keith

[mschn99]

the first 500 miles should be driven easy.....

the rings are sealed seconds after startup (god bless moly rings)

BUT....if anything is gonna let loose....it will do it early....so take it easy the first 500 miles or so and then drive it normally.....

do an oil change at 1000 miles though...IMO

[95and05]

I was planning on oil change at 500 but if 1000 is safe i might do that.
have you read the break in on bazzs page? is that a good way to go?
Tips - Idea - Hints

[95and05]

also Marc if you ck this again do you know when scuffy828 might get back on here?

[Beatngu]

Give it a few like Marc said, then let er eat. When I tuned my car on the dyno, I had less than 100 miles on her. 7000k later and still running strong and putting down the same #'s.

[FiberglassEater]

imo i dont think diesels dont need a break in period, in boats as soon as someones installs a diesel engine its balls to the walls to see what the motor can do this goes to the 6banger cummins to a 12 cylinder mtu and 100% of the time there was never a mechanical failure other than leaking fuel lines or other small problems. and as for break in we had some cummins reps doing the warrenty on brand new cummins and i asked them about break in and they said thier motors dont need break in and thier were testing thier motor to the extreme.

but as for us i really dont know.....

[mschn99]

Originally Posted by 95and05

also Marc if you ck this again do you know when scuffy828 might get back on here?

scott is on daily........but i can say when

[Beatngu]

Originally Posted by FiberglassEater

imo i dont think diesels dont need a break in period, in boats as soon as someones installs a diesel engine its balls to the walls to see what the motor can do this goes to the 6banger cummins to a 12 cylinder mtu and 100% of the time there was never a mechanical failure other than leaking fuel lines or other small problems. and as for break in we had some cummins reps doing the warrenty on brand new cummins and i asked them about break in and they said thier motors dont need break in and thier were testing thier motor to the extreme.

but as for us i really dont know.....

Factory engines rings are seated from the factory, on a fresh rebuild you/I/him have to do it.

drive it like i stole it. change oil at 500, 1000, 2000, then change at reg intervals after that. last engine was broke in on the drive to the drag strip lol.

[Tony1784]

Originally Posted by lukecline

drive it like i stole it. change oil at 500, 1000, 2000, then change at reg intervals after that. last engine was broke in on the drive to the drag strip lol.

Agreed. I always beat the snot out of a fresh motor it's first time out. Change the oil more frequently though.