zetecturbo

hi new here lads hope u can help me.
my mate has a 94 r33 2.5 turbo skyline
just had a new roller bearing turbo fitted
the car puts out white smoke at high revs,and blows the dipstick out and the plugs r oiled up.
i suspect rings,
wat u's think
also the temp gauge is fine no overheating.
and a guide to changing them if its dem wud help pleaz

 

skylineimports

sounds like rings...but do a compression check and that will highlight if thats a problem

zetecturbo

yeah am gona do a compression test today ,hes bringing da car down to me wat figure shud i b gettin for each cylinder,was tinking over a 100 meself

zetecturbo

k lads got the car dropped down to me today,and heres wat happens
wen da car is standing still and u rev it high it covers the place in white and black smoke.
den i drove it abit up the road and wen i came bak it had blown out the dipstick and oil everywer.temp gauge is fine.
havnt done a compression test yet ,but suspect rings gone.
also it just had a brand new roller bearing turbo.
havnt taken plugs out yet to see wat ther like .
it also is very hessitant wen ur driving it and try to put the foot down and splutters abit.
wat do u's tink help appreciated

skylineimports

check for oil in the exhaust, also pull off a breather with the engine running and see if any smoke coming out of it... with it blowing out the dipstick sounds like your getting masses of blowby and your ring(s) are shot....do a compression check and one or maybe more will be really low by comparission.

Has the car got a blow off valve? if so any oil coming out of there? any oil in any of the turbo pipes?

 

KA24Tech

Both a wet and dry compression test should isolate bad rings or worse yet broken ring lands which sounds more like the case. Also a cylinder leakdown test will isolate piston/gasket/valve issues. I would expect it is time for new pistons and rings.

Troy

__________________
SHIFT_Happiness
1992 S13 240SX SE Fastback KA24DE 5 spd - Type X Aero & Seibon Carbon Hood & Hatch -soon GT28RS
1993 U13 Altima SE KA24DET 5 spd w/ Nismo LSD - A high hp FWD can be fun (GT30R Turbo inside)
1990 Z32 300ZX VG30DETT 5 spd - 600HP & Very Civilized (working on twin GT28RS turbos)
Still trying to import a 1988 R31 Skyline GTS-R w/ RB20DET-R - only 800 produced (legal under show/display regs)

zetecturbo

alrite lads done abit today
i took off all the boost pipes to find the pipe going from the turbo to the intercooler full of oil and the pipe going from the cooler to the throttle body full of oil aswell ,so i ran the engine for a few minutes without the pipes on to c if the seals had gone in the turbo .but no oil came from the turbo.
so i took off the cover and removed the spark plugs to find that all plugs wer sooty and damp but not oily.
but no 1 spark plug nearest the front of the car had to electrode an most of the ceramic tip burnt off the plug.
my mate brought the compression tester over and only got to do no1 cylinder and it only read 90psi.
will do the rest tomoro .but wat u's tink so far.
also all the breather pipes wer clear and no oil came out of blow off valve and noticed dipstick is loose in the tube.if the o ring on the dipstick was worn it still shudnt blow out the dipstick should it

skylineimports

the plug wont be helping the running.

Do all the other 5 cylinders then we will have a better idea

Maybe...just maybe your intercooler is full of oil from the last turbo that blew up and is just pushing it back out through the exhaust etc and burning it off....but its doubtful

zetecturbo

k thanx mate will do the rest tomoro which will give a better idea.i thought the same myself as the turbo didnt blow any oil out wen i had the pipes off .but wat cud have caused the plug to burn like dat wud the oil have done dat

skylineimports

det most likely will have caused it...if your getting oil in the combustion chamber to a degree like that the octane will drop masively