Outer Limits 4x4 Board

I 've just recently fitted a factory gu turbo (hitachi) to my td42 and am getting a burt oil smell after hard accelleration are my pistons and rings shot??

Have you used after market oil feed lines, if so did you add a restriction plate?

did you put a new exhaust on?? if so they smell horrible for a while especially with a turbo heating em up.

maybe your oil is not returning quick enough and filling up the turbo and blowing into the exhaust. what size return line do you have and were did you return it to.

check you don't have oil and paint all over your exhaust, even a couple of oily hands grabbing the exhaust as you climb out from underneath can make it pong for a while until the oil burns off

gudday

check all the above...plus

is the engine using oil?, what boost are you running?, how many k's on motor?, new turbo?

if the engine wasn't using oil before it should be ok now.

I had same problem and found that the factory engine breather was too small for the amount of boost i was putting through engine.
The crankcase/engine was pressurising and oil was being forced past turbo seal and hence the engine was burning it and you could smell it in the exhaust.

i fitted a 25mm breather - problem gone, it hasn't used oil since.

good luck

jet-6 ,yes i have custom oil feed and return lines . the feed line to the turbo uses the factory gu/hitachi fitting ( i'm guessing this is the restrictor plate you were talking about)

DR Frankenstein ,yeah its got a spanking new 3" but it has all been fitted for over a month how long can a new exhaust stink for??

tye1986 ,the return line is nearly an inch in diameter if the is any restriction there i'll eat my hat

bj on roids ,the exhaust is as clean as a whistle

garth the engine dosn't appear to be using any oil at all actually it never did, i'm running 12 lbs of boost from the factory gu turbo (hitachi h18t??) the engine has just ticked over to 280k . Now that you mention the engine breather where is the best place to put it after bolting a turbo on?? currently mine is just run to a catch can

my highmount has the same smell under hard acceleration , i found out it leaks oil from the rear seal of the turbo and drips onto the exhaust, but only when you get into it

i ran my down into my chasis the local turbo shop told me to put it there

tye1986 wrote:i ran my down into my chasis the local turbo shop told me to put it there

Feed it into a catch can with decent sized inlet/outlet, then feed the outlet pipe into your intake post filter, pre turbo.

you can do it the way coxy says, thats the standard nissan way....

but if you plan on further boost/mods the way the performance guys do it is to run large diameter hose to catch can then from the bottom of can through a non return valve and dropped into the sump - all legal...

This way the engine burns clean air and EGT's are reduced via not burning engine oil. plus engine oil in charge air cooler is avoided also - therefore better efficiency.

or if you are stuck for room and the guys who give you warrants are not too fussed drop the hose into the chassis rail like said earlier.
Personally i have a engine breather run next to snorkel for safe deep fording of rivers.

good luck

garth wrote:you can do it the way coxy says, thats the standard nissan way....

but if you plan on further boost/mods the way the performance guys do it is to run large diameter hose to catch can then from the bottom of can through a non return valve and dropped into the sump - all legal...

This way the engine burns clean air and EGT's are reduced via not burning engine oil. plus engine oil in charge air cooler is avoided also - therefore better efficiency.

So more or less the same as my suggestion, with the addition of an oil drain? I have seen this done using a tap fitting as well as the one-way-valve you mentioned.

yeah coxy ....but instead of the catch can 'breathing' into the intake and then back into engine to burn - they had a catch can oil filter on top gassing into the atmosphere ie the oil mist was vented to outside not back to motor.
The catch can itself was 3 tanks inside each other with holes drilled on opposing sides and worked well - although quite large. (280x230)

I reckon a valve would be better, then you just drain occasionally, the non return valves were quite delicate and if one failed you would have a hell of a mess in the engine bay ........or worse.

garth wrote:yeah coxy ....but instead of the catch can 'breathing' into the intake and then back into engine to burn - they had a catch can oil filter on top gassing into the atmosphere ie the oil mist was vented to outside not back to motor.
The catch can itself was 3 tanks inside each other with holes drilled on opposing sides and worked well - although quite large. (280x230)

I reckon a valve would be better, then you just drain occasionally, the non return valves were quite delicate and if one failed you would have a hell of a mess in the engine bay ........or worse.

Right - i understand what you're saying now. In theory though (theory is great), if the can is doing a decent job, there should be bugger-all oil vapour exiting the can anyway. I've seen plenty of cans vent to atmosphere through a filtered breather, but for the sake of an extra 500mm of hose, i'd rather have it all legit and safe from the EPA Nazi's.

My 180B vents straight to atmosphere (through a filter), however in the few years i've been driving it i am yet to see the filter wet from blow-by. The piston/rings must be in good nick!

thanks for the replys it certainly gives me plenty of options lol i'm looking to intercool the old girl soon (water to air ) so thats something else i have to consider