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Turbo Seal? Rings? Or Something Else


Darkon
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hey,

just after some quick opinons if i may,

just dropped a rb30det into my r33, the motor was not refreshed at all but the guy who built it said the block and head looked in good nick when he was putting it together (he never actually got it started had to sell up big before he got a chance to due to lack of funds)

on thursday we got it up and running full dyno tune everything seemed in order a bit of valve guide wear blowing smoke when getting off the throttle but when driving on the street i didn't notice it all. did a few 5 min trips from mech but to work that sort of thing during the day, driving really nice and smooth very happy

then on my way home gave it a little hit not to much cos it still hadn't really been running but i'd been told i didn't need to run it in cos it was basically like doing a head gasket since the parts weren't refreshed

next thing i know it loses power for a second and there is white smoke everywhere, but it did clear up but from this point she was blowing smoke out the exhaust as soon as you touched the accelerator and upon stopping it stalled but then fired up straight away and drove a little bit further just to get home blowing a bit of smoke of course.

once home i turned it off and check under the hood saw a whole heap of oil in the corner of the engine bay where the airfilter is also where my bov points, started it up again it fired over and then just stalled tried again same thing, lightly holding down the accelerator just a tad and it started a bit ruff but ran with me gradually lifting off it started to idle, tried a couple of times to get it to start just from turing the key no good,

pulled off intercooler piping i have a link ecu with map and started it up had oil spitting out of the pipe that runs from the turbo and not out of the pipe off the plenum don't know if this means much

left it to sit over night, checked it again in the morning on cold start it kicked over and ran like normal except for white smoke out the exhaust

i've already organised for another turbo and have removed most of the piping ect.

visual inspection of turbo

front turbine intact although has oil sitting in it and a bit of oil leaked onto outside of turbo around bolts for front housing.

so yeah sorry about the novel guys just wanted to make sure i made the full story clear lol what i am worried about now is if it is turbo seal was it just old age 140xxxkm quite possible or could something else have caused it just seems a bit funny that as soon as i put the rb30 in the turbo lets go especially at 5psi

thanks in advance for any input guys

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My 33 did the same thing after a hard run on 10psi. A plume of white smoke tailed me, and the first thing through my head was "how much will this cost". Anyway it turned out I was lucky and melted 4 of the 6 electrodes off my spark plugs.

Cheers

Sumo

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Could be a few things.

1. Get the car compression tested to see

if you have two adjacent cylinders that are low in comp.

This means your head gasket is gone.

2. Or check your oil cap for a white milky residue

which also means your head gasket is gone.

3. Any turbo reconditioner will give you a free strip and quote,

so what you could do, is take the turbo off and oil feed and

they will tell you wether the turbo blew the seal or consumed

a valve seal or piston ring.

Cheers,

Bill

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