A straight six, unexpectedly

Kinja'd!!! by "Cé hé sin" (michael-m-mouse)
Published 06/26/2017 at 14:33

Tags: Land Rover ; Cummins
STARS: 2


Here’s another unexpected thing seen yesterday.

Here we see a 1980s Land Rover, what would be called a Defender now but it was just a 90 then.

Kinja'd!!!

It was sitting there with the engine running and there was something urgent about the noise, as if it belonged to something bigger and elsewhere. Let’s investigate.

Kinja'd!!!

Normally this model had a 2.5 four with just 68 bhp (no, they didn’t do turbos then). This isn’t a four. It’s a 5.9 l Cummins six, a thing much favoured by the Americans for truck use (and rather less so here because truck makers generally roll their own). Depending on spec this produces from about 200 to 300 bhp.

Whether you feel confident about a Land Rover with greatly enhanced performance is another matter of course.


Replies (21)

Kinja'd!!! "RamblinRover Luxury-Yacht" (ramblininexile)
06/26/2017 at 15:06, STARS: 1

A bit heavy, mind you. A Mercedes diesel is a bit more in line with the correct weight, and there’s a 109 SII that my younger brother has back at the house which is going together with an OM617 turbo five - so excess cylinders and diesel is definitely not something I object to.

Kinja'd!!! "AMGtech - now with more recalls!" (amgtech)
06/26/2017 at 15:34, STARS: 0

Was going to say much the same. Wonder how it drives...

Kinja'd!!! "RamblinRover Luxury-Yacht" (ramblininexile)
06/26/2017 at 15:37, STARS: 0

The real question is, of course, would it have been more over the top and hilarious in the Morris Minor pickup which is also in frame? I vote yes.

Kinja'd!!! "AMGtech - now with more recalls!" (amgtech)
06/26/2017 at 15:42, STARS: 0

Very much yes.

How about this: we take that 6bt and move it behind the seats, but in a 110 instead of a 90. Tune it up to 500hp or so. Bam! Mid engine race defender!

Kinja'd!!! "AuthiCooper1300" (rexrod)
06/26/2017 at 15:54, STARS: 0

I have the impression that 90 may be a tow truck/recovery vehicle. It is hard to see if the yellow light bridge is part of it or of something else behind it, but that would partially explain why they would fit a bigger engine.

But is the rest of the driveline really able to cope with so much torque?

Kinja'd!!! "AMGtech - now with more recalls!" (amgtech)
06/26/2017 at 16:04, STARS: 0

You might be right, especially considering there appears to be a freelander sitting behind it! 

I don’t think the R380, LT77, LT230, or ZF4 could handle the torque. Diffs maybe. Driveshafts, iffy at best. Axles, no way. Certainly not in increased load usage, such as towing or off roading. You can get upgraded axles and driveshafts that should work fine. But the transmission and transfer case would have to be custom. I wouldn’t even be surprised if it’s only RWD now. The clutch (or converter) for the 6BT is probably as big as the factory rover bellhousing. I’m not even sure the frame and suspension could safely sustain the weight for an extended period, which probably makes it handle about as well as a lifted jeep with a broken pitman arm.

Kinja'd!!! "RamblinRover Luxury-Yacht" (ramblininexile)
06/26/2017 at 16:04, STARS: 0

I’m thinking 4WD needs to be preserved, so you’d have to have the transfer case in more or less the original spot, with the engine behind. Replace the intermediate crossmember with a “U” style one to support the engine. What you’d use for a transfer case for that application, I don’t know. Maybe a modified divorced case from a military truck..

Kinja'd!!! "AMGtech - now with more recalls!" (amgtech)
06/26/2017 at 16:08, STARS: 0

Hmm yeah I agree. But that makes this suddenly very difficult. What if we do two 4bt’s instead. One for the front axle and one for the rear?

Kinja'd!!! "RamblinRover Luxury-Yacht" (ramblininexile)
06/26/2017 at 16:23, STARS: 0

Nah. If we’re optimizing front axle travel, I think we have no engine in the front space and instead build a carrier for two spares, and go sans bonnet.

Kinja'd!!! "AuthiCooper1300" (rexrod)
06/26/2017 at 16:28, STARS: 0

From what I have just read, Australian 6x6 Perenties with the 3.9 turbo Isuzu used the LT95 gearbox and, I suppose, “Salisbury”or ENV differentials. But I imagine that Cummins must have even more torque than the Perentie’s Isuzu.

By the way... where do you see the Freelander?

Kinja'd!!! "AMGtech - now with more recalls!" (amgtech)
06/26/2017 at 17:12, STARS: 0

My original intent was just too improve weight distribution so handling and stability aren’t so heavily affected, but I like where your head is at!

Kinja'd!!! "AMGtech - now with more recalls!" (amgtech)
06/26/2017 at 17:14, STARS: 0

I’m sure the 6bt has more torque, or can easily be tuned to have much more.

The thing half hidden by the guy in the blue jacket? Although looking at it again, I may have been wrong. I’m on mobile so it’s quite small and difficult to make out.

Kinja'd!!! "AuthiCooper1300" (rexrod)
06/26/2017 at 17:22, STARS: 0

Sure, even though the turbo in the Isuzu must level things a little.

Of course, if you are looking at this on a small screen... I think it is a Fiesta Mk2 XR2.

(By the way, you and Mr RamblinRover should probably write up a detailed description of your very hypothetical impromptu project. Why don’t you two open a posting? It is sounding more and more interesting! Who knows, maybe someone would be rich enough/crazy enough to take it up.)

Kinja'd!!! "AMGtech - now with more recalls!" (amgtech)
06/26/2017 at 17:37, STARS: 1

Perhaps. But I’ve got no experience with that engine.

You’re probably right.

That would be insane to actually do! Personally I’m not a big diesel fan so I’d much rather help someone LS swap one. And I hate LS swaps!

Kinja'd!!! "AuthiCooper1300" (rexrod)
06/26/2017 at 17:48, STARS: 0

Just an idea!

Kinja'd!!! "Cé hé sin" (michael-m-mouse)
06/26/2017 at 18:30, STARS: 1

I’m nearly certain that’s a Mk1 or Mk2 Fiesta, something like this XR2:

Kinja'd!!!

Kinja'd!!! "Cé hé sin" (michael-m-mouse)
06/26/2017 at 18:54, STARS: 0

It was a manual vehicle so presumably it uses whatever gearbox came with the engine. They’re used by DAF in their smaller trucks and come with ZF five or six speeds (or nine, but I doubt if one of those was used!). What he did about the transfer case I don’t know but deleting it and going rwd would be an option.

Kinja'd!!! "AMGtech - now with more recalls!" (amgtech)
06/26/2017 at 18:55, STARS: 0

I’m almost positive you’re correct.

Kinja'd!!! "AMGtech - now with more recalls!" (amgtech)
06/26/2017 at 20:32, STARS: 0

Maybe even took the transfer case from the donor vehicle.

Kinja'd!!! "Cé hé sin" (michael-m-mouse)
06/27/2017 at 04:41, STARS: 0

That would give rise to the question of where it came from. The only roadgoing vehicles I can think of here that would use it would be the DAF LF truck and a few buses, none of which would be 4wd, so maybe the engine and driveline were imported from somewhere it’s used with 4wd.

Kinja'd!!! "AMGtech - now with more recalls!" (amgtech)
06/27/2017 at 09:42, STARS: 0

It’s probably RWD. The rover front diff is usually on the wrong side for most transfer case swap options.