Break in Questions

[ninety15.0]

Hey guys so im getting my engine back tuesday and hopefully getting it in and running within the following four or five days...I'm wondering if anyone has a good list of things to do/dont do when breaking in a new motor. The builder told me change the oil after the first few startup cycles to get the assembly lube out....and then again 500-700 miles after that. I eventually want to run a syn. blend but i've heard its better (and cheaper) to start a motor and break it in on conventional. what are your opinions?
Thanks...

 

[ECU5.0]

do what he said to break it in and use conventional oil. synthetic wont allow the bearings and rings to seat properly and break in

 

[Grn92LX]

Use regular oil. You'll be doing lots of oil changes the first few hundred miles regardless. I'm almost at 400miles on my 347 and i've done 3 oil/filter changes.

See this thread for how to do it. Read what Barry R says http://bbs.hardcore50.com/vbulletin/showthread.php?t=12510&highlight=engine+break

 

[Racerjoey1]

Ive been told to change the oil frequently like everyone has said. Also, when you drive it try not to hold it at a steady rpm. You should let it move up and down the rpm band, I think this is to get the rings seated good. (correct me if im wrong)

Good luck,
Joey