long time no post, more smoke woes

[tattoojohnny]

Hi Guys
Been a long time since I've been on here. As some of you may remember (and some witnessed as dubfreeze) my van was suffering for a serious smoke problem. After it failed miserably on the emission test and after taking it to a diesel specialist I was informed my engine was knackered so saved up the pennies and have just had an AAZ fitted from a mark 3 golf. The chaps who did it were really friendly and very knowledgeable. Anyway, after they got it all back together using the JX manifold and turbo etc she still smoked! Makes me think a turbo issue. They removed the turbo and exhaust, run it through the parts cleaner put it back together and hey presto, no smoke and new MOT!!! Picked up the van yesterday and about 10 mins into the journey home the smoke returned as bad as it was before (I'm talking clouds filling the street) plus oil coming out of the exhaust....not impressed. Got her home turned her off for about an hour then started her up again......no smoke so turned her off again. Gonna take her out for a drive again today and see what happens. Could a blocked oil feed/return to the turbo cause this? I have the leftover AAZ turbo and manifold but apparently the mechanics tell me it wont fit onto the exhaust as they have different flanges??? What options do I have? Am I thinking new turbo needed? or is there a way to use the AAZ?
Help always gratefully appreciated.

[Hacksawbob]

if the oil seals in the turbo are knacked then no ammount of cleaning is going to fix it. I would say if there is if its dripping oil out of the exhaust then it is likely that your turbo is needing replaced or refurbing. Brickwerks sell them on exchange. I had the same problem and its fixed it nicely. Block return pipe? if it is crudded up then this is not going to do any favours, it will increase the pressure and find an escape route somewhere, if your turbo oil seals are marginal then it will worsen the problem, fixing the return pipe may make the problem better in the short term (if it is an issue) but it is unlikely to make it disappear completely I'm afraid. You can remove the exhaust and check for play in the turbo bearing, there should be minimal/none on a good turbo any rocking of the vanes on the shaft and its no good.

[tattoojohnny]

Cheers for the reply. I've read somewhere that the garret off the aaz could be made to fit the kkk by swapping the hotside so it matches up with my exhaust. Is this correct??