k guys here we go you are both getting my old head which was a gsr i used through 4 different engines mixed up from the car i sold with my recent purchase of a 99 si head to make this non smoking at the time ls motor ls vtec. i put pr3 pistons and nippon rings as i have done for many years since 2003 in and arp rod bolts. the block has no pcv set up since it was a 98 block and installing vtec head so i made one by drilling and tapping the valve cover and installing pcv valve in cover then ran to catch can. the line from the pcv to the can got hot and may suck together some times while driving just a thought but during idle the valve should be closed and opens via spring pressure to vent at the rpms i mentioned it smokes at. i have always checked ring gap and wall clearances they were all in specs as to the reason im so bum fuzzled about this in the first place to even post it lol. compression was exactly 240 with throttle open on all 4 with no variations. leak down was done on each cylinder locked out at top dead center under 100 psi and all leaked down to no less than 98 on the second guage so thats a 98% leak down. i could hear no air leak exept maybe a small amount through the valve cover i think was a little noisy and hard to hear but was still a small amount as 98% is within specs of a leak down test. this is the only problem ive ever had i couldnt figure out. thanks guys ill do some more elimination tests by removing pcv and taking a drive. yes the smoke is all colors from blackish grey to a small amount of blue. no i am not tuned yet running a p28 as i did with all my others till i can get scotty to chip n tune it. but ive never even with an untuned p28 had to go down there smoking like this its kinda embarrassing lol. if i cant figure it out ill take it out get oem rings and try it again! at onlt 500 miles driving it only every once in a while since i built in in feburary as to give yall a reference of how long its took me to put 500 miles on it could it still need more time for the break in? i mean ive usually built one and towed it a couple times and broke it in on the dyno! thanks guys for you help maybe ill get it soon!