puff of smoke and what boost

[adam280]

ive noticed when im boosting hard and come off the throttle i get a puff of blue smoke is this normal after a turbo rebuild or is it likely to be valve stem seals. also where is the best place to fit a vacuum line through the bulk head for a boost gauge and what should it be boosting at its a v70r 1998 with a hlm 310 cheers adam

[T5frankie]

you sure its blue? thats not a good sign mate thats a sign of a tired engine, sure its not black?

[adam280]

looks blue, but it was getting dark ill try in the daylight

[T5frankie]

leave it running (ticking over) when it warms does it start to smoke? thats valve seals if it does that

[adam280]

no smoke at all when idle. i had my brother following me last night and he said there was no smoke. ive noticed it when im booting it in third then letting off but not all the time. weird lol

[T5frankie]

sounds like unburnt fuel mate thats all

[adam280]

hopefully

[T5frankie]

how is it driving though? it must feel rapid compared to how it was

[adam280]

yeah feels like a new car. Was out in it today didnt see any smoke so hopefully should be ok. I rigged a boost gauge up dont know if its working cus it was reading -0.5 bar and when on full boost was going up to + 1bar does this sound right?

[T5frankie]

yeah feels like a new car. Was out in it today didnt see any smoke so hopefully should be ok. I rigged a boost gauge up dont know if its working cus it was reading -0.5 bar and when on full boost was going up to + 1bar does this sound right?

yeah mate sounds good 1 bar is 14.5 psi standard is 10 psi, bet its flying, get an mbc on now and turn up to 17-18psi mate lol

[adam280]

Feels allot quicker than it was before. Should the gauge be reading - 0.5 when off boost. Was a bit worried about the smoke so aint give it loads yet. Dont know if im gonna fit the dump valve i like the sound it makes with the blanking plate on. I know some say it aint good for the turbo

[LiamT4]

Feels allot quicker than it was before. Should the gauge be reading - 0.5 when off boost. Was a bit worried about the smoke so aint give it loads yet. Dont know if im gonna fit the dump valve i like the sound it makes with the blanking plate on. I know some say it aint good for the turbo

Yes, thats normal.