how to break in rebuilt motor???

[jlevie]

Fire up the engine and allow it to reach normal operating temperature. Then bring the engine to 2500rpm and hold it there for 30 minutes. The engine is now broken in. Change the oil & filter and drive the car normally.

[reelizmpro]

I babied it the first 100 miles or so, varying speed and rpm, no lugging, then changed the oil. Then did more of the same except higher rpm runs with various throttle positions...but not wot. they have special break in oils out there but I just used castrol gtx 20w50. I plan to run about 500 more miles before changing the oil again. Not sure when I will switch to synthetic but I will run either Mobil 1 or Rotella t since both are off the shelf and have good zddp content which is good for flap tappet engines.

[craiggroves91]

I'm interested too as I have a rebuilt m20 going in my car soon.

I heard you should baby it and do a few low mileage oil changes, because the piston rings will scrape the cylinder walls and produce small metal particles. Something like that hahah

[woodisgood]

He picked his top 1000!?!? music videos? Rad.

[red_e30]

redline it, it should break in no time!

also in for this

[mr.vang]

redline it, it should break in no time!

also in for this

[red_e30]

i have a rebuilt m52 motor in my e30 how should i break it in should i baby it for the first 1000 miles or use this guys method http://mototuneusa.com/ ive read on other forums where people have had great success using his method

discuss.....