Upgrading 2.8idTD engine (1 Viewer)

[Davylambretta]

Was looking to see what fuel pump was fitted to my 28idTD and came across these anyone familiar with them looks like upgraded injectors of sorts

 

[Masman]

I don' know the answer.But why do you need more power, I have the same engine and has plenty of poke.I've seen on forums of people chipping etc for more torque but then have problems with clutch slip.

 

[Davylambretta]

I don't just found it and asking but if it gets me up through Glencoe a bit quicker at Hamburger hill then I'd be interested

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[pappajohn]

Probably does nothing more than overfuelling in the same way a basic tuning box increases fuel rail pressure in a JTD engine

 

[tacr2man]

What gear are you using at hamburger hill , if its fourth then you would need to still use that gear , and possibly rev more to go faster , as using extra power to pull 5th will hasten its departure as its been marginal from the start .

 

[Ashie]

I've got a 2.8idtd on a 2000 Burstner. Found that no power was supplied to cold start unit on injection pump.
To help cold starting the timing is advanced. As the waxstat unit heats up it pushes the control lever back till it hits the stop, retarding the timing to its normal position. The wax is heated by 12volts as the engine warms up. Without any power the timing remains advanced even when the engine is hot. Couldn't find a wiring diagram so fitted new seperate wire from ignition switch to injector pump. Much better power at low revs and quieter running.
Parts show are to increase fuel depending on turbo boost, fitted inside the injection pump. Modified shape is supposed to improve power. Seems expensive has anyone tried one?

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[Duksu]

Parts show are to increase fuel depending on turbo boost, fitted inside the injection pump. Modified shape is supposed to improve power. Seems expensive has anyone tried one?

Had my original modified like the DT piston shown in the picture, rev limiter raised and fueling increased. Also got as big wheels inside the original turbo that could be fitted, boost increased to 1,8bar by adding an additional spring to keep wastegate more closed, straight 3" exhaust, no mufflers. Added some air reflectors to original cooler, opened up intake (still original filter as K&N is rubbish), added water/meth injection to keep engine and EGTs cool. Upgraded original 235mm clutch to JTD 240mm which was P&P, but it lasted two days. Got upgraded pressure plate and it has been fine for some five years now. Haven't dynoed, but something like 200-220hp, 600Nm. Literally no way to adjust low end torque (not a JTD engine), which is hard on the clutch, gearbox, driveshafts, etc. Now looking for some bigger nozzles to release some 20-40hp which should be close what clutch can handle. Original pump head is 12mm, so it is good for at least 350hp. You don't need to worry about 5th gear, because it's really beefy. The problem is when you use low revs with 5th gear as it doesn't get lubricated. I use 5th gear only above 2000rpm and have no problems with it. Biggest gearbox problem seems to be when you do moneyshifts from 2nd to 3rd as syncroring won't take that.

I have built also VW T4 2.5TDI van -96, 380hp/850Nm and MB OM606 (=3L, inline 6cyl, 24v, IDI diesel) in W201 chassis, 692hp/1250Nm, so my Ducato is just a mild improvement.

 

[Spriddler]

Had my original modified like the DT piston shown in the picture, rev limiter raised and fueling increased. Also got as big wheels inside the original turbo that could be fitted, boost increased to 1,8bar by adding an additional spring to keep wastegate more closed, straight 3" exhaust, no mufflers. Added some air reflectors to original cooler, opened up intake (still original filter as K&N is rubbish), added water/meth injection to keep engine and EGTs cool. Upgraded original 235mm clutch to JTD 240mm which was P&P, but it lasted two days. Got upgraded pressure plate and it has been fine for some five years now. Haven't dynoed, but something like 200-220hp, 600Nm. Literally no way to adjust low end torque (not a JTD engine), which is hard on the clutch, gearbox, driveshafts, etc. Now looking for some bigger nozzles to release some 20-40hp which should be close what clutch can handle. Original pump head is 12mm, so it is good for at least 350hp. You don't need to worry about 5th gear, because it's really beefy. The problem is when you use low revs with 5th gear as it doesn't get lubricated. I use 5th gear only above 2000rpm and have no problems with it. Biggest gearbox problem seems to be when you do moneyshifts from 2nd to 3rd as syncroring won't take that.

I have built also VW T4 2.5TDI van -96, 380hp/850Nm and MB OM606 (=3L, inline 6cyl, 24v, IDI diesel) in W201 chassis, 692hp/1250Nm, so my Ducato is just a mild improvement.

Blimey, that's one heck of a lot of work!



(I just leave home ten minutes earlier ).

 

[pappajohn]

Blimey, that's one heck of a lot of work!



(I just leave home ten minutes earlier ).

I would have bought a more powerful van in the first place.
Duksu informed your insurers?... they love performance enhancing modifications

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[Snowbird]

The 2.8 idti engine is a damn good engine in stock form. Pretty much bomb proof with no electrical problems like the JTD. I had the idti in a Hymer 754 tag axle that also towed a trailer or towcar constantly. If it was me I would leave well alone and enjoy reasonable fuel consumption and reliability that was built in by the manufacturer. In stock form you will still get speeding tickets if pushed to the limit.

 

[Duksu]

Blimey, that's one heck of a lot of work!



(I just leave home ten minutes earlier ).

Not really. I work with cars everyday, but mainly collision repair/painting. My VW T4 was the most powerful 2.5TDI engine in the world back some ten years ago. OM606 was also most powerful back in 2010 to these days. These engines really needed some work, not my Ducato.



(I leave ten minutes later on purpose and pass everything on my way... )

I would have bought a more powerful van in the first place.
Duksu informed your insurers?... they love performance enhancing modifications

What's the fun in there? You should see peoples faces in their sports cars when they try to overtake my T4 on the motorway. Hilarious moments to remember even if I get Alzheimer's some day.
Really don't care about insurance as I'm not that old yet. It's just money.

The 2.8 idti engine is a damn good engine in stock form. Pretty much bomb proof with no electrical problems like the JTD. I had the idti in a Hymer 754 tag axle that also towed a trailer or towcar constantly. If it was me I would leave well alone and enjoy reasonable fuel consumption and reliability that was built in by the manufacturer. In stock form you will still get speeding tickets if pushed to the limit.

Consumption was 11,5L/100km @100kmh originally as this was my dad's from new. Now modified 7,5L/100km @100kmh. That's mainly because I have only improved efficiency so far (camshaft is still original). If I find some six or seven hole injectors with decent spray pattern, efficiency will improve even further.

 

[pappajohn]

What's the fun in there? You should see peoples faces in their sports cars when they try to overtake my T4 on the motorway. Hilarious moments to remember even if I get Alzheimer's some day.
Really don't care about insurance as I'm not that old yet. It's just money.

Why doesn't that surprise me!!!
Looks like speed limits don't apply to you either
You will care if you kill someone and you lose everything you own paying the bill

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[Duksu]

Why doesn't that surprise me!!!
Looks like speed limits don't apply to you either
You will care if you kill someone and you lose everything you own paying the bill

I always thought those are only lower limit recommendations for older people, so they won't fall asleep while driving.
Hmm... Didn't think people are all that expensive. Maybe if I ram into a full bus, then maybe...


Just messing with you John. Sorry.

 

[ambulancekidd]

Probably does nothing more than overfuelling in the same way a basic tuning box increases fuel rail pressure in a JTD engine

I'm not sure how you can over fuel this engine, I'm no expert on these units, but I wasn't aware that they're common rail engines, instead they are simply controlled by the fuel pump?
That's the reason why you can't "chip" these engines or use a booster box, AFAIK you can only modify the power output by mechanical means.

 

[pappajohn]

I'm not sure how you can over fuel this engine, I'm no expert on these units, but I wasn't aware that they're common rail engines, instead they are simply controlled by the fuel pump?
That's the reason why you can't "chip" these engines or use a booster box, AFAIK you can only modify the power output by mechanical means.

It isn't common rail, it is a mechanical pump. The pump will inject to each cylinder every so many degrees of rotation BUT by using modified injectors they will allow more fuel to pass for the same degree of rotation.

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