Break in route for new motor?

[Stangdude27]

Well the build will be getting started next week parts are on order for my new motor. How do I break it in when I get it back and would swapping my 3.4 pulley for the 2.9 be wise before I even break it in. I don't plan on hitting the boost until the break in is done but how do you effectivly break in a new motor?

[spike_africa]

ask your engine builder its a bit different depending on many things.

[Stangdude27]

I figured maybe 500 lite running then change oil, then another 500 mild RPM changes then change the oil, then give it about another 1000 miles change oil and she should be good to go. Damn I can't wait to get this motor done. I'll swap pulley after the break in. Maybe while I'm breaking it in I'll order a 8 rib kit so I can get rid of this belt slip. Mycar should be a beast after all is said and done.

[spike_africa]

Most of the egine si have broken in and done we do nothing over 4-5k rpms max drive it easy for 1k-1,500k miles change the oil and go. Buts its deffernt for certine things. Like my freinds ATV it has such tight tolerences we didnt have to do hardly any break in, but a motor like the stock one in our cars needs a good amount of easy driving to let the rings set ect.. before heavy pounding happens.

[RedFirevert04GT]

Definitely take it easy for at least 500 miles and change the oil at no later than 1000. Some people claim there's no such thing as a 'break in' oil change anymore. I still say they're outta their minds. As long as you've got new friction bearing surfaces that are establishing wear patterns, you've got a break in oil change to do.

[whitethunder46]

Don't know why, but on my mother's 02 Toyota Camry she couldn't go above 65mph or use cruise control until 3K miles, that was recommended.

[spike_africa]

Originally Posted by whitethunder46

Don't know why, but on my mother's 02 Toyota Camry she couldn't go above 65mph or use cruise control until 3K miles, that was recommended.

same as any other motor, it needs time to let the bearing set rings set etc... its soo the motor will last a long time not a short time. my moms subaru was even worse they cant go above 55mph and you can rev past 3.5k rpms was soo awful to drive for a good 2 months.

[Tifosi2003GT]

scott @ vt engine's http://www.vtengines.com/low_technical.htm

[Stangdude27]

I read it already thanks thou. I got my answers today from my builder.

[Stangdude27]

I should have asked the question with a power adder.

[Stangdude27]

Well we ordered eagle crank, eagle H beam rods, eagle -17 domed pistons. going ahead with a .020 over bore and stock stroke. Also 3500 stall convertor, with blower cams, nad new springs. Made the depsoit for parts and motor comes out friday.