MJM

Blew my engine at last race. Have a new LS6 crate motor being installed but won't have much time for break in.

What is some good advice for doing the break in properly so I can enjoy a relatively long racing life from it?

Thanks,
Matt

RX-Ben

Abuse it from the get go.

Dirty Howie

Sounds stupid but I agree 100%

Just make sure its fully warmed up. And might want to change the oil after a session or 2.


DH

froggy47

Since it's a track car, it's hard to put miles on b4 you run it.

A new street motor is going to be tight & run hot, no way around it.

I would self impose some lap limits, watch the gauges closely, at the sign of any heat issues do cool down or pull to pits & drive around periphal roads EASY.

Maybe get 100-200 miles on it, dump oil & filter & good to go.

I wouldn't run it over 5500 if it were mine. Maybe once a lap.

Maybe dino oil, but I would try to get advice from someone who has done it. Maybe not.

Let us know.

jimtway

I let mine idle for about 30 minutes, followed with 2000 rpm for 30 minutes, then 2 sessions at no more than 5500 rpm. Changed the oil and let it rip.

Sidney004

Same here.

http://www.mototuneusa.com/break_in_secrets.htm

Olitho

...says that rat bastard that is getting 408 HP out of a crate engine.

Timz06

I would try to put a couple hundred discreet miles on the backroads before I hit the track.

CHJ In Virginia

To the OP == Where did you find a GM LS6 crate motor ?? They have been non existant for about a year or so ??

SouthernSon

Get to an HPDE weekend soon so you can drive it as you need for good break in.

trackboss

Go break it in on a rw dyno for a half hour. After than run the **** out of it.

CeeFiveZee

Absolutely. Dyno time is cheap compared to the cost of a new engine. I was allowed to run my racecar on the dyno and run it through the gears for 30 mins for $100.

travisnd

If it's a GM crate motor then it should already be run-in on the dyno and ready to go. The break-in period in a new street car is really for the transmission and rear end to develop good wear patterns for long service life.

If it's a newly built motor with no run time, then I'd do the dyno thing for 30 minutes, change the oil and go.

rustyguns

John Shiels

If you cannot run it on the street. Gm probably runs them for 2-3 minutes or even less to see the power and all is OK. Put a fan in front if you are idling it. After the first session I would run it up to redline few times. Many happy miles ahead!

VGLNTE1

Yup..people get so nuts about break in time for new cars and such. Over done. Only thing I put street miles on a bit was a new diff and clutch. Motor, just pound it.