Engine Specific Info and Questions > TDI Engine -General Info
m-tdi timing
oldskool rich:
ive just added a disco 300tdi pump to my 1Z corrado, it seems to be ok except it doesnt like to cold start and it literaly doesnt rev from cold, i put my foot down and nothing happens untill after a few minits, when it does happen it does alot of caughing and spluttering.
I timed it to 1mm duno if thats right, but thats what you do on an AAZ, the smoke seems a little retarded though seems quite light coloured
anyone got any surgestions? it doesnt appear to be knocking so it cant be that far out, it doesnt have a manual choke so i cant control the timing with that, any ideas how i might advance it wen starting? or does it just need advancing in general?
Sprockets:
Well, as timed in the 300TDi engine itself, it should be 1.54mm without EGR, and 1.4mm with, so I vote for advancing the pump up a bit more :)
-Gavin
greg123:
Is the discovery pump a better mtdi pump than the 2.8 iveco/fiat/renault one that is banded about on here/tdi club but pretty hard to find?
Greg.
oldskool rich:
thanx greg, that makes sence then
better is a strong word, disco is 11mm the 2.8 is 12mm
11mm is better for high revs, 12mm is better for low rpm
ive only experianced 11mm so far, ive heard of 12mm pps snapping at high revs and sum people swap back to 11mm so its hard to say whats better
im looking for a good mtdi pump for my 2.0 diesel, do you have any details about this 12mm pump i wouldnt mind trying it out if i can find one, i thort it was only on the AGK 2.8LT
greg123:
As far as I know, VW never made a 2.8 litre tdi 4-cylinder. The LT is actually a Mercedes Sprinter and should have the 2.9 5-cylinder tdi (an amazing engine) or later cdi, I guess VW wanted to source a different power train for some reason.
As far as I know, don't quote me, it's teh sofim engine. This is Iveco's engine, as used in the Iveco Daily. Iveco farm their Sofim engine out to the Renault Master, Fiat Ducato, Citron Relay, Peugeot Boxer and AFIK the LT 2.8. It was popular a few years ago because few of those 'car' based mfr's had a suitable large cc engine and for the amount of vans they sell it made more sense to buy in. Merc obviously had a range of big diesels so they were not bothered.
Even now, the new Sevel (Fiat Ducato etc) van with the 2.3 litre and 3.0 litre engines are all Sofim Iveco engines.
So, I'm thinking any of the sofim range with a mech pump and tdi (the 2nd gen 2.8, before they switched it to common rail - later went to 3.0 litre 16v with 3rd gen common rail) would do the job.
Comments? Greg.
--- Quote from: "oldskool rich" ---thanx greg, that makes sence then
better is a strong word, disco is 11mm the 2.8 is 12mm
11mm is better for high revs, 12mm is better for low rpm
ive only experianced 11mm so far, ive heard of 12mm pps snapping at high revs and sum people swap back to 11mm so its hard to say whats better
im looking for a good mtdi pump for my 2.0 diesel, do you have any details about this 12mm pump i wouldnt mind trying it out if i can find one, i thort it was only on the AGK 2.8LT
--- End quote ---
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