I wanted to know the general procedure of how to break in the new motor. I've been hearing different things but from different car owners. How did you break in your motor and what products did you use for the tune up?

 

I followed the owners manual.

 

You're such a Goodie-little-two-shoes!

Yeah, did that too...

 

1000 miles of starting easy with 3000rpm shift points. Gradually increasing revs and throttle percentage. Ended with a 2nd gear through 4th gear blast at 1000 miles followed by an oil change.

 

thanks for the info

 

Though I did what you guys did (by the manual), I heard otherwise.

I hear your supposed to drive it smoothly for the first 500 miles, then get an oil change. Supposedly, a new engine will produce more engine deposits for the first few hundred miles than a used engine, simply because it is "fresh metal." Getting an oil change after the first 500 miles will flush out these deposits. Then I hear you're supposed to drive it like you mean it! Otherwise, when you do rev it up a bit, your engine will be like "wtf?" and hicup on you. So I hear...

 

I take it you didnt read the owners manual??

Keep it under 4000 rpms for the first 1200 miles. And if your on the freeway, vary your speed and rpms.

 

Engines are pre-broken-in at factory...

 

hahaha no it's not. my dealer told me to break it in. and so does every dealership that i bought my car at.

 

I agree. I have always driven everything I bought just the way I wanted it to run, after 200-300 miles or so. I had a good friend and 25+ year chief mechanic tell me that the best way to break in an engine is to run it for 3 to 4 hours (200 to 300 miles) then run like you want it to run.

 

drive it like you stole it. seriously.

 

haha i did. J/K, i did good but after 300 miles i did take 1,2,3 all the way for a couple friends. Bu.t after that i drove normal

 

(With props to davidv from whom I swiped the above pic)

 

yes they are. every motor is turned over and ran at the factory to make sure it operates properly. the majority of break in is done in the first few miles (<50). by the time you get it, its already mostly done.

the only reason you go slow on the rpms is to let the rings mate properly to prevent oil leaks. the pistons are already seated.

 

Yea I was talking to one of the local shops and they said when we rebuild the engine I should change the oil like 3 times, once at like 250 miles, again at around 500 - 600 and finally after 1000 miles. They said it was best to do this to get all of the metal filings and stuff worked out of the engine with minimal damage. Once I have the 1000 miles …. THEN we crank the boost baby….
-B

 

this is why i would never buy a second hand sports car!

 

The metal fillings'n'stuff should be in the oil filter...

I agree that if an engine is rebuilt, the tolerances might not be as thight as factory. It can't hurt to flush it a couple times. But don't forget to change the filter too!

 

Thanks, yea your right it should, but better to check and make sure everything is tight and all.

I would do the whole routine maintenance each time, checking all the fluids, belts, hoses, plugs, vacuum lines etc... After tearing it all down and putting it back together want to make sure it was put back right and nothing is lose, pops off and all the fluids are staying in their proper lines..

We are looking to push some heavy boost and I understand we might want to recheck the torque of the head bolts and a few other things while we do the oil/filter changes.
--B

 

I drove it to hell after 500 miles. Took out my buddies in a s2k, 03M3 SMGII, and a 05 Rustang GT. I'm sure the motor is broken in now...