dvandentop

got my car up and running again and dont drive it much on the street, breaking it in with amsoil break in oil will probably get in a few hundred miles.

Would like to go to the track tomorrow but will prob end up waiting til end of the month.

Aardwolf

Pretty much right away. After the first start up and some tuning then dump the oil. Ready to go! Or break it in on the dyno.

Kubs

If you dont have access to a dyno, drive it on the street a little. Find a less populated road and run it through the RPMs in 2nd or 3rd with some load on the engine. When the engine is warm, start at about 2K rpm and hit the throttle hard (like 75%) and run it up to about 5-6K (not quite to redline) rpm then let off and allow the engine to slow the car back down. Do that a couple times to seat the rings. Bring it home, drain oil, fill with synthetic.

Bill Dearborn

I had at least 3K miles on mine. I didn't get the car back until the season was over. Next morning I started on a 1200 mile round trip with the car. First few hundred miles I changed gears so the rpms would change and I also varied speed while in one gear. So far everything seems to be in good shape. Oil consumption at the track is great. All my previous LS engines used a quart per day. This one is using less than a half quart in 3 track days.

Bill

69427

Did a half hour on my engine run stand, then a weekend of autocrossing, and then a track day. I read a convincing article quite a while back about breaking in an engine the same way you're going to drive it. So far the engine doesn't seem to have suffered from this method.

Short-Throw

I drove mine from the garage to Pit In, so I guess 1/2 mile or about 45 seconds.

GettReal

Engine went in... dyno'd to check tune/AFR... loaded on trailer and took to track so I think I had 30 minutes on it?

63Corvette

The owner of this Cobra told me that he had (at that time) 55 race weekends on his engine

fcarga

Dyno break-in/tuning followed by a test day, practice and qualifying sessions and then good to race.

Lawdogg

Tracked mine after a few hundred street miles.

Painrace

Race engines are like Mike said. Dyno tune, install, race! In your case the guys above are right, run the rpm up to about 5,000 the back down to 2,000 a number of times after 140 degree oil temp, let the motor cool completely (over night) and you are ready to go. I would not be concerned to install and run. Just my 2 cents.

Jim

AU N EGL

Then change the oil and your good to go.

waddisme

I got my short block from TSP. The had a specifin breakin procedure. I run it for an hour at differnent rpm levels while it was still on jack stands and no exhaust. Pissed neighbors off big time. Had to take ones next door to dinner to smooth it over. After that, straight to dyno and then to the track the next week.

Poor-sha

Someone told me that the manufacturer break-in period these days is more for the trans/diff than for the motor. No clue how accurate that is but I do have a new trans/diff going my car as we speak.

Everett Ogilvie

For the 1st startup;

1) fire her up,

2) set brick on gas pedal and go in the house (beer is optional during this step),

3) come back 20 minutes later.

If she survived load her up and go to the track.

Hey Derek, glad to hear you are back on the road again buddy!

Black89Z51

Most engines nowadays are broken in in the first 50 miles. The honing processes produce significantly lower "peaks".

I broke my SBC in by running it around the neighborhood for about 5 minutes then loaded it up and had it dyno tuned. Then I went racing.

Honestly, a road course is an EXCELLENT place to break in an engine. You have good loads and constantly changing RPMs.

Kubs

That is not a good idea. The point of break in is to put load on the engine so the rings expand against the block and seat properly. Just revving the engine with no load won't do anything.

JDIllon

Derek, is the motor a stock GM replacement? or a race built motor?? If stock, the motor needs some break in time on it, to seat rings and other things. If race built, it can pretty much be run from the start up. It would have been built with more clearances. Just my .02
JD

Everett Ogilvie

Umm, yeah, I was kidding.....

Painrace

What's a brick?

Jim