93B17A

so whats a good break in period for a fresh engine

BYT

i'd say give it at least a good 500 miles. i know people that are patient enough to wait 2 or 3 times that though.

zojirushi

My friend "shamoo" on HT is waiting about 5000. I think he's an idiot, but that's what he wants to do to be safe, he spent like $10K on that motor.

93B17A

yeah i spent close to 10k as well on my motor

b16ahybrid

Wait about 100 miles before realy getting on it.The rings will have set long before then.Don't romp on it constanly and don't hold rpms steady for very long for the 1st 500 miles or so.
The only real reason to wait that long is to allow the bearings to get their wear pattern (each one will break in and wear differently).

Projekt20

I've pretty much got an idea on the time intervals when breaking in the motor....along with the oil change intervals....but what about the valves? I've heard that you gotta have them readjusted about 1000? Anything else?

-Trung