Vette-Dream

CF: Welcome back, Vette-Dream!
Me: Thanks!


Been a while, I put about 60k miles on my stock motor after installed my turbos. Good times!

Long story short, I've got a new motor installed. I've put about 5 miles on it so far, just getting the idle tuned in with HPtuners so far. Before I run it through the 500 mile break in (without boost) I am told I should disconnect the turbos so I don't get metal from the break in going back and ruining the turbo bearings.

How exactly?

Is it just like it sounds, remove the turbos from the car completely. Dump the exhaust directly out? Connect the oil line going to the turbo directly to the return line with some fitting?

I have the STS rear mount kit, so access is a breeze. But I'm just wondering what all would be involved with the process, if anyone has done it before.

Thanks, and it's good to be back!

SBCGENII

Depending on where you get your oil from it could have gone through the filter already. If that oil is good enough for your engine bearings I wouldn't worry about the turbos.

Vette-Dream

I believe the turbos are fed after the oil filter. Maybe I'll hedge my bets and just do an oil change after 100 miles and then again at 500 just in case.

Turpid porpoise

This is what I've always done. I've had 3-4 turbo builds with fresh motors and I've never disconnected the turbo for break in. Break in oil until initial oil change and filter analysis at 50 miles. More break in oil until second oil change at 500 miles and another oil filter analysis.

js23881

I have had several engines built over the years for racing and have (25+ lbs)blower. On every engine we used break in oil for two heat cycles...about 1/2 hour each, then drained oil and checked filter. After that we put proper zinc enriched oil in engine and put it on dyno and tuned it ...but we added boost slowly. After about the fifth pull if all is good (A/F, oil pressure, etc) we put coals to it.....no 500 mile slow driving. Never had one not work or come back on us. Average engine was over 1000 rwhp, and street driven and track run. Usually get about 20k b4 I refresh.......I find it interesting a lot of people do the 500 mile thing with zip boost......but in the end its what you feel comfortable with and your engine builder tells you.

winters97gt

+1.

And the 500 mile thing is just what companies tell you. Shoot, LME here in Houston takes them strait to their engine dyno.

I'd get good heat cycles on it. Let the rings sit. I'd rather put 100 miles on a new motor with lots of heat cycles than 500 of just cruising.

Vette-Dream

Thanks, really appreciate the responses. I really didn't want to have to tear things off if I didn't have to.

I've put about 200 miles on it and changed the oil, using a heavy break in oil both times. At 500 I'll switch to a lighter oil and let it roll.