Anyone know anything about breaking in a new, fresh built longblock.

My tuner said stay off of boots for about a thousand miles, vary RPMs, etc, etc. I also read a lot about various things:

1. Vary the RPMs and loads
2. Don't drive for more than 30 minutes at a time . .
3. Warm the car up for 15 minutes every time you start i . .

Some of the more "controversial" stuff I read has been:

1. Drive like you stole it (which I've been told NOT to do so I'm not gonna)
2. Drive relatively hard varying the RPMs to seat the pistons in . . or something?

Any tips would be cool.

Thanks

 

that list sounds about right. you can rev it up high but not for long.

 

Drive it for 2k, let it break in and definately stay out of boost until the mileage break in point is obtained. Warming up the car is also vital to a long lasting motor.

 

just daily drive it try not to stay in the same gears for a long time like in 5th and 6th. NO BOOST!!!

you should be fine its not some magical thing

Are you running reg oil or synth?

 

Hopefully he's running 5W/30 regular cheap oil, synthetic is not good for seating rings. I've even heard of using Mineral oil for the first 1K miles.
Gary

 

thats why i asked...I think I used like unical 76 oil or exxon


now I use amsoil maple syrup 20-50

 

Ima ask my tuner what kind of oil he put in my engine when I go pick it up soon.

Thx

 

I took the springs out of my wastegates, started the car and idled it for 15 min, changed the oil.

I then took it out and beat the **** out of it using the mototune break in method

after 9000 miles of 580 whp the car still runs great and the compression is perfect

 

Well my tuner doesn't agree with motoman drive like u stole it method I think . . I'll bring it up to him.

I can't risk any damage.

And I am super **** about this process.

 

What exactly needs breaking in? On a motor with a hydraulic cam or solid cam we do a break-in on the dyno of varing the rpms for about 15-20 mins, change the oil and then we start making pulls. On a roller motor, we get it up to operating temp, change the oil and then beat the hell out of it.

I dont know what type of cams are in these motors, but I would assume a good break in of varying rpms for a good 20-30 mins, change the oil, then have at it. But this is ONLY my opinion and previous experience with domestic v8's.... street, marine and all out race engines.

 

I've done a bunch of reading on this for a few days now and everyone's opinions are different.

I'll just go with what my tuners says at the end of the day . .. just looking for some advice.

TY

 

dude dont trip just normal everyday driving dont be afraid to get the rpms up there 4k 5k just dont got WOT to get there. onlything your doing it for is for all the rings and valves to set and become one with the motor.

then at like 1000-1500 miles change the oil and tune it and go rape it

welcome to the darkside wish you the best dont let it get to you if you have any problems its only normal

 

When I get my motor built I will drive it for maybe 100 miles change the oil then rape it

 

i would definitely change the oil about 2 or 3 times before 1000 miles