I havw forged internals in my Z6 with 1800 miles on it. When I drive around normally, no smoke, i can even boost it pretty hard, and still no smoke until i really hammer on it and it goes into vtec. then it starts shooting what looks like some oil smoke. anyone else ever have this happen? it's not rings, i know that much. my valve guides maybe? just because of the high rpms?

 

How did you break it in? Was it tuned when you broke it in?

 

my engine is also built
and has 7k miles now
and compression are 190 all around

and i also smoke when i gun it hard
wich apears also blueish smoke

i guess is the fact that built motors have looser specs, and under high HP aplications it might smoke some...
but hey i am not sure

 

I dont think its normal for any engine to smoke if its built and broken in properly. I have 1k on my built GSR and I have zero oil consumption. 190-200 across the board with 9:1 compression.

 

It was tuned as well as I could considering I don't have a dyno within 500 miles. I do have a PLX Wideband hooked up, so I tuned it to 14.7 under normal driving conditions, and under WOT its pretty rich. Usually in the 12:1 ratio zone, which i'm told is pretty good for a boosted car. I was just driving it again here and it doesn't seem to do it all the time. I gave her some good boost in 1st and 2nd and didn't see anything when i looked back. I'm just gonna go easy on it until i get some more time to play with it.

 

i also have 190 across the board and it is boosted... mine also smokes in vtec... i have always been told that is normal....