[SandyX]

So this is something I came up on the Roxor group today.

Surely somebody makes a mechanical pump for a Roxor, so a guy could get away from the electronic side of things. I really like my Roxor, and I’m not complaining at all, but being able to do away with the electronic aspect of being dependent on an ecm or the multi gauge would be extremely appealing to me.

The idea is perfectly understandable from an apocalypse hoarder's point of view. Avoid any dependency on electronics for the core engine operation. The motor is common railed MDI3200TC.

The Americans love the engine and they do not want to replace it with another. All they need to know is what all should be removed and added to run it without ecm and other electronic doodads. Like how it used to be here before common rail assy was slapped onto this block.

What do the knowledgeable people here think?

[v1p3r]

Common rail architecture is a bit different from older DI or IDI engines. You could hack something together, but it wouldn't be hugely reliable, and that would kinda defeat the purpose of having something bulletproof to survive the apocalypse.

Having said that, mechanical fuel injection pumps are rather complex pieces of machinery, and I wouldn't think they lend themselves easily to jerry rigging.

[SandyX]

Originally Posted by v1p3r

Common rail architecture is a bit different from older DI or IDI engines. You could hack something together, but it wouldn't be hugely reliable, and that would kinda defeat the purpose of having something bulletproof to survive the apocalypse.

Having said that, mechanical fuel injection pumps are rather complex pieces of machinery, and I wouldn't think they lend themselves easily to jerry rigging.

Yeah, i hear you. Consider it experimental in nature, done by people who doesn't mind the hacking.

As market talk goes, the block is shared between pre and post common rail MDI3200TC engines. I can't verify this though. Assuming that is indeed true, some things were removed and added to make it happen. This is exactly what they are trying to find. This block did work reliably even before common rail arrived. So more than hacking, it could be seen as reverting to how it used to be.

[v1p3r]

Block isn't the problem, head is. Common rail fittings are meant to withstand very high pressure and are integral to the head, including stresses. Of course, that means that disabling common rail injection is easier than retrofitting it.

[SandyX]

Originally Posted by v1p3r

Block isn't the problem, head is. Common rail fittings are meant to withstand very high pressure and are integral to the head, including stresses. Of course, that means that disabling common rail injection is easier than retrofitting it.

Alright. Assuming just the block is similar, theoretically what all are the assemblies to be changed to get an operational mechanical motor out of its common railed version? One is head.

[dhanushs]

Converting the Roxie engine from a common rail to a mechanical fuel pump is extremely easy and kind of bolt on. A lot of guys have already done it here in Kerala.

I have even seen Scorpio CRDe engines being converted to mechanical fuel pump.

What specific details are you looking for ?

[SandyX]

Originally Posted by dhanushs

Converting the Roxie engine from a common rail to a mechanical fuel pump is extremely easy and kind of bolt on. A lot of guys have already done it here in Kerala.

I have even seen Scorpio CRDe engines being converted to mechanical fuel pump.

What specific details are you looking for ?

Honestly, everything. Start to end. There are some folks sitting across the pond staring at their stock roxy motors wondering where to start. Even parts details could help them find alternatives. Thanks

[GTO]

These guys will probably encounter more headaches in the "mechanical conversion", than they would with any problems on the "electronic" side of things. Modern common-rails are pretty damn reliable and I'd put the odds of electronics failure at 0.x%.

If a diehard oldschool enthusiast really wants to simplify things, it's a better idea to swap another mechanical motor into it. That engine bay is very versatile & accommodating.

[dhanushs]

Originally Posted by GTO

These guys will probably encounter more headaches in the "mechanical conversion", than they would with any problems on the "electronic" side of things. Modern common-rails are pretty damn reliable and I'd put the odds of electronics failure at 0.x%.
.

The Roxor engine or the M2DiCr engine is basically an old school Mahindra Di engine with a mechanical pump “converted” to CRDe for the sake of emissions.

The reason for converting back to mechanical is probably because they need to run the engine underwater. ECU and electronics like you said, are pretty reliable but crossing a stream with water over the bonnet is always a risk. With mechanical pump you can run the engine 24/7 under water.

One of the reasons I’m painstakingly sticking to the old school BD30T in my jeep.

Originally Posted by SandyX

Honestly, everything. Start to end. There are some folks sitting across the pond staring at their stock roxy motors wondering where to start. Even parts details could help them find alternatives. Thanks

Sure. Will try and take a couple of photos and post it here.

[v1p3r]

Originally Posted by dhanushs

The Roxor engine or the M2DiCr engine is basically an old school Mahindra Di engine with a mechanical pump “converted” to CRDe for the sake of emissions.

In this case, the head and camshaft arrangement on the CR version will be modified / different from the DI version, unless I am very much mistaken. I haven't personally worked with the Mahindra engines, but it would not be prudent to use the same architecture for both. However, M&M has been known to do stranger (I'm being polite) things.

@SandyX, you could start a business shipping used M2DI heads and mechanical FIPs to the US!

[Kosfactor]

Will this help?

Boodmo Link

The parts list for Bolero Pickup 1st Gen is worth a try. What is needed bare minimum is rotary injection pump and injectors.



In the states, they should probably try using cummins parts or even the tractor engine parts.

And we have this for reference.

Originally Posted by ex670c

Hi Eric,

From what information I have. (Historical/Co-Related/Market Talk)

The MDI Series of Diesel Engines are based on the International Harvester B275 Tractor Diesel Engine, which was Indirect Injection.

This was developed into the MDI1850, MDI2350, MDI3000, MDI3200 & MDI3200 all Direct Injection and Low Revving.

The nomenclature indicates Max engine RPM

Around the time of the MDI3000, this engine went into another track SZ116 for the scorpio then the CRDi version.

What does MDI stand for? Mahindra Direct Injection or Modern Direct Injection.

Regards,

Arka

[SandyX]

Originally Posted by v1p3r

@SandyX, you could start a business shipping used M2DI heads and mechanical FIPs to the US!

Oh, I'm just an enthusiast, hoping to have his own DI someday. There's already a few vying to have a piece of the roxor pie.

Originally Posted by Kosfactor

In the states, they should probably try using cummins parts or even the tractor engine parts.

They're already digging into the B275. Something tried and true would be easier. Arka's post on the MDI was shared there already a few times, as well as the boodmo parts list.

[SandyX]

Originally Posted by dhanushs

Sure. Will try and take a couple of photos and post it here.

If you don't mind, please update.

[dhanushs]

Originally Posted by SandyX

If you don't mind, please update.

Hi Sandy,

I've recently picked up a Scorpio CRDe. Will be converting it into a mechanical pump from an SZ+. Will keep this thread posted on the proceedings. If possible with pics.