Objectivity, Please.

Andrew Walcker

Mod Emeritus
Yikes, the code is actually P1317, not sure were I came up with the other one. From my very limited understanding of this you are correct about the reason for the Rough Road Sensor and the reason it is there. There is a Tone Ring which the sensor attaches to that reads if a wheel spins, ie, in an off-road situation. In my situation and others that I know of, it will throw a code in an off-road situation or even the tires loosing grip on pavement and trigger's the check engine light. I have had to deal with this problem as I failed a smog check here in CA due to the off road sensor being dirty.
 

Yorker

Adventurer
MoGas said:
Yes, No but maybe solo, yes, possibly.


I'm thinking: Cummins 4BT, Nv4500 5-speed, I may have to use a Land Cruiser or early Jeep t-case to simplify the swap and keep the offset axles. I am only in the earliest of stages of thinking/feasibility.


There are adapters NV4500 to the LT230 floating around out there. I think Dieselcruiserhead is thinking of using that combo a FJ55. There is no real advantager to be derived from a TLC transfer case- the LT230 is one thing that LR really did well IMHO. Some Jeep transfer cases would be ok but if you want offset diffs you are looking at the NP200 which is big old and slow or the Dana18- Meh...
 

Oilburner

Adventurer
Joaquin Suave said:
I don't know squat about rovers, but...

I'd drive a vehicle with a Cummins 4B in it before "I" tooo hot & bothered about doing that swap.

4B's are heavy gutless dogs with a very small power band. I'd look towards another motor.

I think the reference was to the 4BT. The 4Bs aren't very common (except for agricultural applications) but the 4BTs seem to be the internet wet dream engine these days. With a few tricks (3200 RPM governor spring, pump tune adjustments, etc) I've heard of some pretty lewd power figures. My only gripe with the 4BT is the relative height, which is a problem in most swaps (my 6BT has the same problem) and the vibrations due to the lack of cylinder overlap. My Land-Cruiser (3B 4 cyl) was a lot rougher than my "thinks its a tractor" 6BT due to the overlap issue.
__

Canada got exactly the same thing as the US as far as models.

With respect to the original question, in my mind there are three "camps", and it all depends on what you want to get out of the vehicle. The camps are Series, Defender and Other (Disco classic RR). You can make any vehicle do anything with enough time and money, it just makes sense to pick a base donor vehicle that is closest to what you want. If comfort and ride and warmth and sound insulation are what you are looking for, you will be fighting an uphill battle with a Series or an older 90/110, and a Classic or a Disco would make sense. Conversely, if you are looking for an everlasting vehicle and value ease of repairability, a Series would beat out the Discos and
RRs. There are worthy candidates in all lines.
 

Michael Slade

Untitled
I'll second the motion for getting a Hunter RRC.

Second best would be to get a '93-94 LWB RRC and gut the engine and put in whatever struck your fancy. While you were at it you could swap out for the LT-230 and replace the ABS stuff. I've done the ABS swap before, not to terrible actually. If/when my ABS goes out I'll re-do the swap. I'm pretty good at doctoring the pumps though, so I can baby them a loooong time before having to swap.

Having modded many LR's I have to question the wisdom of doing an engine swap. Starting from scratch is one thing, but to take a well running truck to swap out a diesel is IMO counterproductive.
 
Wait...we're trying to determine the "sensible" way to modify your LR product

:xxrotflma

nevermind......

...something about jackstands comes to mind....
 

stevenmd

Expedition Leader
Michael Slade said:
I'll second the motion for getting a Hunter RRC.

Second best would be to get a '93-94 LWB RRC and gut the engine and put in whatever struck your fancy. While you were at it you could swap out for the LT-230 and replace the ABS stuff. I've done the ABS swap before, not to terrible actually. If/when my ABS goes out I'll re-do the swap. I'm pretty good at doctoring the pumps though, so I can baby them a loooong time before having to swap.

Having modded many LR's I have to question the wisdom of doing an engine swap. Starting from scratch is one thing, but to take a well running truck to swap out a diesel is IMO counterproductive.
I totally agree with this post. I have a 94 rangie and I love it. The 4.2 has plenty of power to push the 285/75R16's up a hill at 65mph in 3rd gear at 3200 rpms fully loaded with the family. It has plenty of power to cruise at 75mph at 2200 rpms on the freeway. The one thing I do like about the 95 rangie is the disco interior.:smiley_drive:
 

bovw

Explorer
JackW said:
The 1991 Range Rover Hunter edition was a decontented model for the US market that meets all of you requirements except the crank windows one. The power windows proved to be more relaiable than the crank up ones (except for the cheap window switches) so that shouldn't be an issue.

The Hunter edition has no ABS, no sunroof, manual cloth seats, vented front disc brakes, and no sway bars. I drove one for twelve years until I bought my Defender - it was a great truck and was notable for not having most of the stuff that causes problems as the trucks get older.
Actually the power windows were options on the Hunter I think, but most probably have them. Both of mine do anyways, and I know of a Hunter that has an optional sunroof installed here in VA.
 

dieselcruiserhead

16 Years on ExPo. Whoa!!
Joaquin,
I certainly respect your opinion but there may have perhaps been something wrong with the 4BT you drove? Even bone stock I found myself flying up the 8000 ft 15 minute long passes in 5th gear only occasionally having to downshift to 4th and never less than 65mph. This is also in a heavy vehicle with 35" tires... I also towed vehicles, etc etc... They also have almost a wall of torque at idle, they will literally idle over and through anything possibly including your brakes. I would use first low to get down to the equivalent of vehicles with 100:1 low ranges, down to 300-400 rpms with brakes to slow down the idle, and it would not stall, just keep on crawling... On the highway in stock configuration feels like a V8 on the highway I would say... I had no issues going 75-80 easily, even when fully loaded, and always got over 20 mpg (about 22 average when driving 70-75mph plus), and if geared right (fast) with 33" all terrains you can get as high as 27 mpg on average...

The big issues are again fitment because the engine and its large sump are deep (not necessarily tall), and the noise of course. I found no real complaints about the vibration personally and found this is mostly overrated. 4cyls are rougher but I used rubber mounts the first time and it was fine (only noticeable if you wanted to notice, and at idle only). Even in town or in traffic vibration was never bad)... But this time I'm using the OEM Cummins liquid filled mounts and they will really let it shake around without feeling it. But mostly because I have them, not because they are needed... Then on top of that all of the cheap or free power you can get out of them, turn up the pump, and/or buy a cheap used turbo from a Dodge guy who is upgrading (there is a restrictive stock Dodge turbo from about 2001-2004 that is the perfect fit for the 4BT, usually had for $200-300 at most).

Would I recommend it for a Rover? Possibly but probably not unless I knew the engine would fit. But they do fit OK in Land Cruisers. It is a little tight in the front end with 40 and 55 stock width axles. Best is to upgrade to 60 series front axle for a number of reasons and you get a little more breathing room. In a Range Rover classic that would be cool. The NV4500 doesn't have a good adapter to the LT230 though, you will need to run a dual offset Land Cruiser t-case. An Orion at 3:1 would be awesome.

There is a thread on my forum, www.4btswaps.com, with info about fitment into Defender Rovers... Really my only complaint is the wide shifting, even with the later tighter pattern of the NV4500, combined with the 4BT and its low power band (factory governed at about 2300-2500rpms), made for odd shifting. It is basically a 3 speed with an underdrive and over drive. I found myself starting in 2nd unless starting up hill...

Hope it helps, Andre
 
Last edited:

Michael Slade

Untitled
I know the 4BT will fit into a Series LR or a Defender front end. Not sure about a RRC or a Disco. Probably would.

dieselcruiserhead said:
The NV4500 doesn't have a good adapter to the LT230 though...

Not yet anyway. ;) Once it comes there will be all kinds of fun conversion options. It'll be here soon.
 

James86004

Expedition Leader
MoGas said:
Were they 91 only?

The Hunter was 91 only. They were testing the waters for a down-market Range Rover, and they had a horrible time moving them off the lot. So, they gave up and moved up market instead.
 

dieselcruiserhead

16 Years on ExPo. Whoa!!
http://www.landroverexchange.com/listings/

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Cassidy Crocker.
Bend, Oregon, United States of America - 12 April 2008
 

bovw

Explorer
James86004 said:
The Hunter was 91 only. They were testing the waters for a down-market Range Rover, and they had a horrible time moving them off the lot. So, they gave up and moved up market instead.
Don't forget, they only built 405 of them. So they are not that easy to find. There's a post on D90 with one for sale in NOVA right now.
 

kellymoe

Expedition Leader
I havn't waded through the entire thread but a early Range Rover Classic might be worth considering. I'm talking early to mid 70's RR. Cloth manual seats, roll up windows, carbed engine. They are out there. Just have to look a little.
 

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