[Guest]

After I broke in the cam I took her easy for the first 20 miles and have now been starting to get on her a liitle bit, occasionally opening the 4V and making some long hard pulls from 45 to 80 in 4th gear but after 55 miles she still smokes a bit and more from the passanger side. I am running moly rings with forged pistons and 15-40 or 15-50 oil I cannot remember. Sould I be woried about the smoke? Is this the best way to break in a motor? How do you guys do it? Thanx

 

[boss351]

I have heard you need to take it easy the first 500 miles..... then change the oil..... then you can gradually get more abusive with it.

 

[68_wildfire]

I read the best way is to vary your driving. Go easy, then get on it, do drives up hill, then go easy again etc. All these changes will help everything seat well.

 

[whisperer]

I always do the first oil change at about 50 miles. That dumps all the assembly lube soup and any brand new wear particles out of the engine. Change the filter also. Don't use too heavy weight of oil and never use synthetic oil in a new engine. 10W-30 or 15W-40 is fine, you're going to change it again at 2-300 miles anyway, right?

After proper cam break in I usualy just get in and go for a long drive and without getting on it hard just drive it normaly. Do avoid lugging it, that's not good on any engine and especialy a new build. When I get back from driving about 50 miles I dump the oil hot, and filter, and let it cool completely down, letting the oil drip till it stops, many times all night. That's a good time to retorque the intake and exhaust and heads if they need it. Then new oil and filter, check all the other fluid levels, and just drive it without excessive lugging or excessive RPM's for a couple of hundred miles. At that point I'm ready to do anything I would do with any other engine and just drive it.

At only 55 miles I wouldn't be too concerned about the smoke yet.
If it's still smoking at 200 then you might have a problem.