Engine breaking in???

[mechanix0889]

hey guys im arriving of the day where my new motor will almost be done
i have JE 20 over pistons with there rings new bearings new everything im wondering what the best way to break the motor in is and what type of oil also how long to change it

i was reading on this web page on how to break everything in its pretty amazing what he says and he has proof take a look.

http://mototuneusa.com/break_in_secrets.htm

[Pineapple]

^Follow that instruction. Remember to do it smoothly. Don't floor it and don't go high RPM until oil get warm. The coolant temp gauge is a good indication of when the engine is warm enough.

[mechanix0889]

thats what i had envisioned to do just thought id get a second opinion whatk ind of oil should i use?

[Pineapple]

Regular oil, cheap and oil change in 1500km<-what ever it is in miles.
Don't switch to synthetic until 20000km.

[The Black Camry]

but isnt that for New engines just like it says? runing it too hard probably can mess up bearings in an old engine!

[mechanix0889]

yes it can mess up bearings in a new motor but im rebuilding mine completly so this is why im asking how to break it in

[Pineapple]

That break-in procedure is NOT running the engine hard at all. Bring it up to redline slowly, NOT flooring it to WOT from 0 and power shift it all the way up.
Also after rebuild, you should have all new bearings too. Its not a rebuild unless you get all new seals, bearings and gaskets. Remember all the bearings should have NO contacts with the shaft. So the break-in process got NOTHING to do with the bearings. Only the piston rings need break in.

[The Black Camry]

so the which is it run it hard like in the site or be genle with it?

[Pineapple]

Read the site again. They run it but not hard. They never tell you to floor it from a stop.

[The Black Camry]

so floor it when it is moving ?

[Pineapple]

Read through the websit a few time and follow their instruction.
I won't waste my time retyping everything they got.