engine smoke-turbo i think

[umpkin]

That sounds just like mine was, new set of valve stem seals, all sorted.

when the thurbo goes, normally you get smoke on overun, when you lift off the throttle.

[irish s12]

Originally Posted by s12-newbie

can i put my t2 cast exhaust elbow on a t25?

i'm after the closest thing to a bolt on swap out! my s12 is my daily so 'll need to have it fitted & working within a weekend

modding my intercooler pipes is no probs just the turbo is the worrying part!

i have a t25 off a rover it boosts & does'nt smoke for defo but it does have shaft play so i doubt how long it would last once fitted if its a more or less direct ish fit?

what about a t25 off a ca18DET?

let me "the clueless" know! :OP

You can fit it without using all of the elbow bolts,as the t20 has 4 bolts and the t25 has 5 it will work ok though provided you have an original nissan gasket.
I cant talk about the rover 1 as they are all extinct so I never see them any more,but the det 1 will work fine.

[s12-newbie]

if it is the valve stem oil seals where do i get those seal will my local place that sells pistons,timing belts etc etc have them?

is it much of a job to do the valve stem oil seals with the head on?

how do i compress the valve springs to get the collets off?

[irish s12]

If it is happening when the car is left idling for 5 minutes or so then it isn't the stem seals,it's the turbo.
If it's the stem seals then it will blow smoke whenever it has oil pressure,where as the turbo will blow smoke once the exhaust gets hot enough to burn the oil.
Engines can do weird things from time to time,but I have seen a whole lot of cars that have exactly the symptoms you describe in your first post that have knackered turbo seals.
I would say that you 100% need a new turbo tbh.

[s12-newbie]

coolio irish i'll keep my lookout for a turbo then! i have contomplated getting a turbo rebuild kit but heard they are'nt great! or is that just myth from chat forums!

[irish s12]

Originally Posted by s12-newbie

coolio irish i'll keep my lookout for a turbo then! i have contomplated getting a turbo rebuild kit but heard they are'nt great! or is that just myth from chat forums!

I've rebuilt turbos before with good success,but they are fiddly to do and you have to get them balanced afterwards.