Club 80-90 Forums

Just out of interest, has anyone ever tried DJ injection setup on a DG? I presume it would physically fit. but interested to know how badly it may perform.

Cheers

Rob

since it uses airflow to calculate the fueling, it's quite versatile. It'll run fine

You mean a DH ? VW did that too ……

Or SP or GW used in Switzerland.
I ran an early DG with DJ injection for a couple of years. Went really well.

Ok, well may give it a whirl on one of my spares. 

Was not sure if the ignition map would be significantly different.  A winter project.. I have welding to sort for MOT  

Big experiment, you need to change the petrol tank

yeah, aware the tanks are different. 

I had a DH engine, and actually the tank did NOT have the bigger 12mm outlet, just a normal 7mm(?). I can't confirm if that was how it came from the factory, but that was how it was, and it ran fine.

I even ran the replacement ej20 Subaru with that tank for quite a while and it also ran fine, now replaced with an injection tank.

If that's useful real world info for anyone

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slowcoach wrote:I had a DH engine, and actually the tank did NOT have the bigger 12mm outlet, just a normal 7mm(?). I can't confirm if that was how it came from the factory, but that was how it was, and it ran fine.

I even ran the replacement ej20 Subaru with that tank for quite a while and it also ran fine, now replaced with an injection tank.

If that's useful real world info for anyone

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Ah but yours was an early, whereas all UK injection models were lates. Maybe that was the difference?

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Yes maybe, an 84. I don't know if an dj injection setup from then is different to a UK late DJ..?

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Certainly more economical with fuel injection. My last DJ (auto) returned 24mpg on a run. Even achieved 19mpg towing a 750kgs pop top caravan. Whereas the early DG on Digijet returned about 19mpg, and too gutless to pull anything with spare power at hand.

My latest DJ2.1 on carb/lpg has done around 200 miles since install. But not mated with the proper 2.1 auto differential. Reckon 16mpg at the moment. Still not given it a long motorway run, though. Keeping to varied road and speeds, and loading engine to correctly bed in piston rings.

all good stuff to know. I am ambivilent to carb/efi i know a lot of old skools hate the new fangled stiff and a lot of newbies acn't get their head round carbs, but maybe my automotive development hit the sweet spot,  I prefer EFI when it's working as expected  

TwinTurbo wrote: ↑01 Sep 2025, 03:51 all good stuff to know. I am ambivilent to carb/efi i know a lot of old skools hate the new fangled stiff and a lot of newbies acn't get their head round carbs, but maybe my automotive development hit the sweet spot,  I prefer EFI when it's working as expected  

I agree. I much prefer EFI too. However the system is extremely complicated and wiring is getting old and beginning to wear. Too many sensors telling to many ECU's what to do.

My first DJ (auto again) caused so many issues. Especially the engine dying as l took my foot off accelerator pedal approaching junctions or roundabouts. It would start again. Into N. Fire it up. Rev it. Allow it to idle. Back into D. Stressful and not as simple as manual dipping clutch, firing up then driving off. But took a year to finally solve. And it was a very simple solution: remove the idle box on engine wall and permanently plug the two leads together.

Then ECU packed up, causing no control of the injectors and flooding exhaust with petrol. Known used spare ECU solved that issue. But again precious summer days lost chasing the issue.

In 40k and seven years' owning a fuel injected engine l've called out recovery three times. Twice due to EFI faults and one waterpump failure. My previous camper, carb/LPG, two call outs in ten years and 80k. One engine failure and one drive shaft failure. And l could have fixed the drive shaft myself had l a spare.

I never needed a digimeter until l owned a injected model There is no doubt it is far smoother, more powerful and economical on Digijet. But l know where l m with a carb. Air and petrol and spark tis all it needs.

Yet, contradicting myself, my latest carb camper needed recovery only two weeks ago. Failed manual petrol pump. But l had diagnosed the issue within 10 minutes. And if l had a spare with me at the time (l do now) l could have returned home just 30 minutes later than expected, instead of waiting five hours for a gobby and tired out recovery driver boring us to tears about what an excellent driver he is... despite banging against a fence post exiting the parking field.

Marco Mansi offers a new EFI system. If l had the funds spare l would consider it a good option.

Same block so all the stuff will bolt on.. but you're bolting a 30 year old EFI to a 30 year old engine. You'd probably be better off on carb to avoid all the electrical gremlins, unless you've had the engine rebuilt with a new cam etc..and the EFI stuff is new.

As Stu says Marcos stuff looks nice but sod importing anything from the US while that orange nutjobs in charge

Stesaw wrote: ↑01 Sep 2025, 08:22
As Stu says Marcos stuff looks nice but sod importing anything from the US while that orange nutjobs in charge