Disco 1 Cummins

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Tumor

Tumor

Active Member
Posts
182
Location
dunedin, new zealand
now i have seen 5.9L (6BT) cummins in Defenders before, but i was wondering if you can fit them in discovery 1s. or the smaller 3.9L (4BT) cummins.
if anyone has any pictures of either it would be greatly appreciated.
 
He put the Cummins 6BT in a Defender 90.
I was wondering if anyone knows of someone putting, either the same engine 5.9L Turbo Diesel in a Discovery or the 3.9L 4BT?
 
Tumor said:
He put the Cummins 6BT in a Defender 90.
I was wondering if anyone knows of someone putting, either the same engine 5.9L Turbo Diesel in a Discovery or the 3.9L 4BT?
Click to expand...

I think perhaps the hope of hooking you up with Aaron was to show you that it will be a crazy expensive thing to do, and it'll weight an absolute tonne, and you'll probably hate it at the end. The cost and weight issues will be the same across the range.

good luck though :D
 
farmershort said:
I think perhaps the hope of hooking you up with Aaron was to show you that it will be a crazy expensive thing to do, and it'll weight an absolute tonne, and you'll probably hate it at the end. The cost and weight issues will be the same across the range.

good luck though :D
Click to expand...
Yeah I wasn't really looking into actually doing it, just as an inquiry to see if you one has done it.
Because they are a very cool engine.
 
Tumor said:
Yeah I wasn't really looking into actually doing it, just as an inquiry to see if you one has done it.
Because they are a very cool engine.
Click to expand...

They are indeed - I remember the 1st time I saw that youtube clip of the blue pickup with one in.... what a noise!!! great machine... but not for the average person.

I've become quite obsessed with the idea of the BMW/LR TD6 engine from L322 range rovers - I think they'd be great in defenders and discos, but I've slowly come to the conclusion that L322's are coming down in price enough to just buy one of those when they hit their "bottom". Much cheaper than the conversion, and you get a free range rover :)
 
when you fit a cummins is it best to use the gear box that the engine comes with as i hear that the landrover gearbox can't really handle the extra toque
 
Guy on youtube has the 4 pot in a disco, it seems like any modded land rover, a non stop fix/modify/fix/modify affair, pretty much as said above ref Aarons defender cummins.

Search 4bt cummins discovery on youtube.
He is american so takes an age to get to any point, so best to ffwd where possible.
If you also search cummins land rover on youtube there are a few videos, you will notice one thing about all the vids, they drive them quiet carefully ie no pedal to the metal/thrash the arse off of them, mainly I think because when you do they break the car, the engines themselves are great.
The 6 pot will easily shift an emtpy 7.5 ton (4 ton ish) truck up to an above 70mph with ease and bang on to the rev limiter.
 
Last edited:
My friendly welder has fitted a Cummins engine in his spare D1. I do know the bonnet has to be modified as the engine is taller... I'll get some pictures and ask him what he fitted next time Im there.
 
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