I'm lookin at buyin a 1.9d 6n is it possible to turbo it ? tdi maybee ?

I'm no fan of diesels,so i wouldn't do it myself,but i dont know why this isn't popular. I've never even heard of one being done.

Not that it'll be a 'bolt a turbo on' job - on the contrary,i expect you'll need near everything from a donor Golf TDi.

Even still,should be well worth it.

i reckon you should get a asz engine, i.e pd90bhp or pd110bhp, because their the same engine, you can change the turbo on a 110, and bolt on a 150 for instance, there is some modifications involved like you'll need it to be remapped, but overall you could take a pd110 and change turbo and take it to about 200bhp.

jabba sport are the people who you want to talk to about this.

my dad was going to do the same thing to his old fabia vrs before he sold it, had been remapped to 190 bhp with standard pd130 turbo, rolled on jabba's rolling road at 480nm, fitting a 150 turbo on would of taken it to about 220bhp and 510nm!!

exspect to see nothing out of your back window but smoke

If it's pouring out smoke then it hasnt been remapped properly..

i have no experience with the polo engine, but have some with the mk2 and 3 golf diesel engines. if its any thing like the IDI engines found in the golfs then it should be easy enough.

you'd need to fit the diesel pump from a 1.6 mk2 golf GTD, you could fit other ones or even use your standard pump but this is the best one for tuning as you can adjust how much fuel gets pumped in when it comes on boost, the best standard turbo is the K03 found on some 1.9 AAZ td engines found in mk3 golfs, seat toleados ect ect, the exhaust manifold from either of these engines should bolt straight on to your engine but its probably best to check first as i have no experience of the diesel engine in the mk4 polo, probably best to upgrade to the metal head gasket from an AAZ as well. iirc the heads on the turbo diesels have different valves in the to cope with the high temps so maybe fit the head from an AAZ as well.

as i say tho i'm not familiar with this engine so can't be 100% sure these bits will fit, although i can't see the engines being massively different if they were being made bay the same company at the same time. your best bet is to have a look around vwdiesel.net they should be able to answer any questions you need to know

I'm no fan of diesels,so i wouldn't do it myself,but i dont know why this isn't popular. I've never even heard of one being done.

Not that it'll be a 'bolt a turbo on' job - on the contrary,i expect you'll need near everything from a donor Golf TDi.

Even still,should be well worth it.

i'm pritty sure the 6n should be IDI (indirect injection) meaning no ecu to piss about with so it 'should' mostly be a bolt on job...

thats just going off the assumption that it is IDI and not TDI but at the time these were being made (94 onwards was it?) vw were using the IDI engines in the mk3 golfs upto about 96-97 iirc.

If it is the same engine that comes in skoda 1.9 SDi (AEF code) cars then it has been done and can be done on a small budget. Fueling you use a 1.9td pump with a 1.6 td top cover. The AEF has piston oil cooling already fitted so reliability is not an issue. Manifold and turbo comes from a passat (on the skoda the mk2 turbo does not fit as the engine sits upright in the chasis and the turbo fouls the bonnet, not sure if this would be an issue on a mk4 polo). Clutch is the problem. Standard clutch cannot deal with the torque of the engine and will get eaten very quickly. Paddle clutch on these are a cnut to drive in traffic or parking so something that would need to be considered.

So if the engine is the AEF code then it can be done with mainly second hand parts. Other bits to consider as with turboing any engine. Can be done though. Considered it for my mk2 caddy pickup (felicia shape).

Edited 27 May, 200917 yr by demolover

The engine block will have to be tapped for the turbo oil return and the turbo oil feed can be taken from the oil filter housing iirc. As the engine is the AEF it can be done and at very little cost if you are handy with tools and doing stuff yourself. It probably wouldn't be the best idea to do it as a rolling project though so if you need your car every day don't do it until you have some spare time. The person who did this also used an intercooler from a sprinter and made an exhaust with no cat. Supposedly doesn't need it and runs better without it.

The engine block will have to be tapped for the turbo oil return

can you not just run the oil return to the sump like on the other vw diesels?

also if your using a water cooled turbo the 1.6 GTD has the water return from the turbo going back into the block through the center core plug (it has a nipple sticking out of it for the pipe to go on to), i would of thought one of these would fit your engine.

Well the guy i spoke to tapped the block, never got an answer as to why he tapped the block. Unsure as to why he chose that location rather than the sump. Surely as long as the oil is 'returned' it makes little odds!?!? I shall question.

Basically the main question with the engine being durable enough to accept turbo application has been answered. It is durable enough and so it can be done without having major reliability issues. Clutch is an issue that would have to be addressed but i am sure there will be a suitable clutch that could be used.

Come summer when the weather is a bit nicer and i have some spare greens i may have a look at having a go at this in my pickup. About time someone made a good diesel mk4 polo :-) I bet you could pick one up for funk all and have a go at this just as a test.

Edited 27 May, 200917 yr by demolover