VAG 1.9 TDi into a RWD transit

[oldskooler]

ive only started to research the mtdi option, sure would be more in keeping with the "nice simple very little to go wrong" concept than running all the gubbins to go full tdi, sensors, airflow meter, fly by wire pedal etc.

for a donor, if running the full tdi management system, id be thinking the 130bhp awx lump found in a passat or a4 sport model round the 02 mark. im thinking the plastic fuel tank with inboard pump would probably go under the van some way and there id be lots of room for ancillaries to go but the loom and dash would be a different story.

must google some more to try and find out what sort of figures theyre getting on a pd engine running mtdi and can the variable vane turbo be kept using an alternative control system while running a mechanical pump? its that turbo that makes these engines so tractable down low beginning to spool up at 1800 rpm with a nice wall of torque from there on.

all interesting stuff!!

[Luke]

i was thinking if i went full tdi then avoiding the 130bhp ones - no real reason i just expect the lower bhp ones would be more economical and reliable?? might be completely wrong

for my firevan camper i'm not fussed about max power it'll never carry much - may be tow the odd car but 100-130bhp would be plenty i doubt i'd ever chip it. i wouldnt want to take it over 70mph anyway

also i'd like to keep the mk1 dash so doing away with the passat/audi clocks - the speedo i could take off the prop........ what else do i need

oh if i could i'd have cruise control - not fussed about air con

[oldskooler]

id also be against having to transplant in a whole matching dash and clobber to be honest.

from what i can see the later pd engine looks like a challenging install from a management point of view.

the 110 bhp afn motor seems to be the best all round option from what i can see. no immobiliser in dash cluster like later ones so only ecu needed to be powered up. pretty decent thread here on one.........http://forums.tdiclub.com/showthread.php?t=247471


would be loads of power in a tranny with an option for some more, seem to have early version of variable vane turbo, so very little lag, have 228mm clutch and they dont seem to have a dual mass flywheel either which is good.


looks like donors should be easy enough to find, quick search threw up this!!

http://www.ebay.co.uk/itm/S98-VOLKSWAGE ... 3635wt_958

[Luke]

that westfield is great he uses an early donor too

been looking at the LT gearboxes and its the mk1 LT i think i need - it has a remote gearstick on linkages which looks ok but i'd prefer if it came straight out of the box

[knighty1981]

can't you get the same engine, with a bosh pump and no electrics from an earlier citron ?


loads of people on the veg oil forum run them, because they run happily on pure veg oil

if you ask on there, those guys know those engines inside out - http://www.vegetableoildiesel.co.uk



iirc you can also get the newer 2.1 lump, and swap the injector pump and injectors from a 1.9 onto it and toss all the electrics away

[andypdq]

I would agree the AFN motor is the one to go for, our 98 Passat has one and it is considerably more powerful than the 1Z which was in the Audi 80s we had. It has noticably more bottom end grunt than the earlier 1Z, mainly down to VNT and I'm fairly sure they have bigger injectors.

If you decide to go MTDI, you cold fit a wastegate turbo, or do the mechanical VNT thing. http://www.thesamba.com/vw/forum/viewto ... sc&start=0. Pictures are on the second page. A beautifully simple system. I intend to do something similar with the Duratorq.

I would personally go MTDI, nice and simple, but I would have no worries about fitting the electronic system, as they have proven to be very reliable in my experience. The "Evry" mod gives loads more power for overtaking and is a laugh for less than a tenner and half an hours work. http://forums.tdiclub.com/showthread.php?p=120184 I haven't put it on the Passat, but did on the Audis.

[andypdq]

can't you get the same engine, with a bosh pump and no electrics from an earlier citron ?


loads of people on the veg oil forum run them, because they run happily on pure veg oil

if you ask on there, those guys know those engines inside out - http://www.vegetableoildiesel.co.uk



iirc you can also get the newer 2.1 lump, and swap the injector pump and injectors from a 1.9 onto it and toss all the electrics away

You're confusing the VAG TDI with the good old Pug/Citroen indirect injection XUD.

[knighty1981]

crap! good point, ignore everything I said!

[Luke]

another interesting thread here http://www.brick-yard.co.uk/forum/lt-24 ... page1.html

they fit a 2.5TDI to a 2.4 LT - if the 2.5TDI is the same bellhousing as the 1.9TDI then does that mean i can use a gearbox from a later LT mk2

looking at the angle on the engine if i used a mk1 LT gearbox then my engine would have to be straight and in effect rotate the gearbox - might cause a problem with the oil

i would prefer to use the mk2 LT gearbox if i can as i'm not too keen on the mk1 box now

[Luke]

was it a pd twin cam (01 0n) tdi you measured?? what we talking from the back gearbox mounting face to the front of the crank pulley.......bout 19 or 20 inches?????? i never got chance to get to the breakers with the tape!!!

another thing i measured my mates golf today and the engine is a lot longer due to the extra stuff on the front and back - not sure what could be removed but it would still go in but not as easly - still fly in a mk2 tho

[Luke]

wondering if this box would fit a 1.9TDI its local to me so if i had an engine i could go try it on

http://www.ebay.co.uk/itm/261583087192? ... EBIDX%3AIT

[Luke]

ok that wont work he says in the thread

For a 1,9 swap you need use an adapter plate between the engine and tranny as the 1,9 4cyl bolt pattern is not the same as the 5 or 6cyl ones.

[dieselhead123]

ok that wont work he says in the thread

For a 1,9 swap you need use an adapter plate between the engine and tranny as the 1,9 4cyl bolt pattern is not the same as the 5 or 6cyl ones.

Looks like you have just saved yourself £300 mate

Mt75 and an adapter plate it is then?

Cheap readily available gearbox, easy speedo connection and you could 'spin' the engine ao as to put it 'up-right'.

TIM

[andypdq]

ok that wont work he says in the thread

For a 1,9 swap you need use an adapter plate between the engine and tranny as the 1,9 4cyl bolt pattern is not the same as the 5 or 6cyl ones.

Looks like you have just saved yourself £300 mate

Mt75 and an adapter plate it is then?

Cheap readily available gearbox, easy speedo connection and you could 'spin' the engine ao as to put it 'up-right'.

TIM

Could run into problems as far as oil pick up and may have to build custom sump, and check out oil drain pathways for return back to the sump, to avoid oil pooling in unwanted places in the top of the engine, if it's stood upright.

[Luke]

Mt75 and an adapter plate it is then?

it's looking that way