Help My R32 Gtr Blew Oil Out The Air Filter And Exhaust :(

[jimbob32]

so here is the story ,

I have a gtr32 with hks gtss turbos , power fc full exhaust , tuned on 1 bar.

took it for a spin and gave it max throttle from 2 to 3rd .

drove it for about 2km after that pulled into my street and the idle started hunting. popped the hood and oil had blown out the pod filters and was blowing smoke like crazy .

so I thought I had blown a turbo oil seal, changed the turbo's back to the stock set , cleaned out my induction pipes and intercooler basically degreased every part inside and out.

started the car and the ilde was sort of stable , not hunting but ruff to rev and still blowing heaps of smoke .

iv been told that all the oil that shot to the head came out the crank case vent and into the induction and out the exhaust thus the smoke.

what people havnt told me is why this happened ?

iv also been advised to change my spark plugs and to do a compression test , and to have a better go at getting the excess oil out of the cat and exhaust to stop the smoke.

what are peoples thoughts any input would be great ,

thanks james .

[DVS JEZ]

Do a compression test.

The running rough is the worrying part, check the spark plugs.

But be warned it doesnt sound good. May possibly have melted the side of a piston

[kitto]

Sounds like typical cracked ring land. Compression and leak down tests will show.

[hypergear]

Oil drain blocked or kinked? happens to the 2nd turbo usually.

[hy_rpm]

I've had a blown turbo before and the smoke didn't go away till driving 1km or so as the oil was all in the exhaust

If the compression test is good just take it for a long drive and it will clear out

[jimbob32]

ok so did a compression test and all 5 cylinders are good but i have zero comp in cylinder 1 guess the head has to come off to do a visual inspection .

no good.

iv been researching this issue and people say it could also be a broken exhaust valve that is stuck open thus the zero compression. has anyone else had this problem ? as i did hear a slight tick in the weeks leading up to this disaster but thought nothing of it .

thanks james

[DVS JEZ]

Start by adding a small amount of oil to cylinder 1 and redo the comp test on cylinder 1.

Did u try retesting cyl 1? Does the engine have a constant missfire? If it doesnt have a constant missfire then its possible the tester wasnt in correctly.

[jimbob32]

i will try thecomp test again this arvo and see what happens how much oil should i add to cylinder 1 ?

[GTSBoy]

Spoonful or so. 10-20ml. Just enough to wet the rings.

[jimbob32]

ok great ill do the test and post up the results this arvo or tomorrow might not have time untill tomoz .

thanks everyone .

[jimbob32]

so the results are in and its not good.

i have now done a wet and dry compression test

cyliners 2-6 have normal compression

cylinder 1 has 0 compression .

guess its going to be head off and fix or a new motor. i know rowan nash has like 6 rb26 motors might hit him up

[GTSBoy]

Either a valve is wide open/damaged or the top of the piston is! Be prepared for more carnage from bits of metal going where they aren't supposed to.

[jimbob32]

yeah i can see a full rebuild coming

maybe its time to do it right and big instead of bolt on and hope for the best .

if its a full rebuild might as well use quality forged parts and build the head strong .

might be adding a build thread soon hahah

[GTSBoy]

If you do that, you really have to start deciding if you're building it to a power target or just putting in new "better" stuff to give it the edge. Because of course once you open that can of worms (power targets and all), now you're looking at the oil system, ARP fasteners, etc etc.

I would buy someone's wrecker spec engine to start with, and drive that around while rebuilding/building the broken one (or a replacement if you've stuffed the block!) otherwise it will be off the road forever.

[mickr33couple]

Build a 30/26