Page 1 of 2 12 LastLast
Results 1 to 10 of 15

Thread: Other than the 200/300tdi which diesel to use?

  1. #1

    Default Other than the 200/300tdi which diesel to use?

    I'm acquiring stuff in anticipation of a Series/Disco I hybrid build. I have the Series IIA (bad motor, bad chassis, everything else okay) and I've recently acquired a complete '95 Disco I rolling chassis (no motor, but everything else - auto tranny). Now, I'm after a diesel. My ultimate goal is a "gentleman's" Series - 100 mph top speed to insure comfortable 75 mph cruise, power steering, a/c and good mileage (25-30 mpg at cruise - ergo the diesel). Offroading will be relatively mild compared to what some of you folks do. I'll be running around a West Texas ranch where a stock full-size 4x4 Chevy pickup can go most anywhere.

    I welcome any suggestions/comments regarding what diesel to use. I don't want to use an LR 200/300 tdi because of their cost and comparative stateside rarity and because I believe there are suitable alternatives for less money. I initially thought I was going to go for an Isuzu 4bd1t or 4bd2t, preferably the former, and I may still do so but I wanted to see what others thought. Size matters(!) because one of my goals is to retain the classic Series look - I don't want to pooch the grill forward of its stock location relative to the front wings. Some Mercedes diesels have been touted as good and cheap, what about that?

    I am thinking of staying with the auto tranny and transfer case that came with the Disco because (1) I understand it's strong enough, (2) I'll only have to come up with an adapter from whatever motor I wind up with to the transmission; downstream from there it will be all Disco, and (3) because of the cable shifter mechanism it will be relatively easy to put the shifter in a suitable location in the Series IIA cab.

    What say you experts? What diesels are good candidates for this hybrid and why?

  2. #2
    Join Date
    May 2010
    Location
    Rutland, Vermont
    Posts
    759

    Default

    2.7 turbo inline 5 from a mercedes sprinter. You may have to use the auto transmission to. Great engine. Van gets 25 - 28 mpg going 65 on interstate (big box) and will go much faster.



    As the older vans come down in price you could probably pick up a van, pull the drive train out and sell what is left. this gives you the engine and transmission, wiring harnesses, computers etc.

  3. #3
    Join Date
    Sep 2012
    Location
    Western MA
    Posts
    9

    Default

    hi,

    have you started your build? I'd love a diesel LR, so if you have any pictures you could share, that'd be great.

    Cheers

    Quote Originally Posted by bfrieck View Post
    I'm acquiring stuff in anticipation of a Series/Disco I hybrid build. I have the Series IIA (bad motor, bad chassis, everything else okay) and I've recently acquired a complete '95 Disco I rolling chassis (no motor, but everything else - auto tranny). Now, I'm after a diesel. My ultimate goal is a "gentleman's" Series - 100 mph top speed to insure comfortable 75 mph cruise, power steering, a/c and good mileage (25-30 mpg at cruise - ergo the diesel). Offroading will be relatively mild compared to what some of you folks do. I'll be running around a West Texas ranch where a stock full-size 4x4 Chevy pickup can go most anywhere.

    I welcome any suggestions/comments regarding what diesel to use. I don't want to use an LR 200/300 tdi because of their cost and comparative stateside rarity and because I believe there are suitable alternatives for less money. I initially thought I was going to go for an Isuzu 4bd1t or 4bd2t, preferably the former, and I may still do so but I wanted to see what others thought. Size matters(!) because one of my goals is to retain the classic Series look - I don't want to pooch the grill forward of its stock location relative to the front wings. Some Mercedes diesels have been touted as good and cheap, what about that?

    I am thinking of staying with the auto tranny and transfer case that came with the Disco because (1) I understand it's strong enough, (2) I'll only have to come up with an adapter from whatever motor I wind up with to the transmission; downstream from there it will be all Disco, and (3) because of the cable shifter mechanism it will be relatively easy to put the shifter in a suitable location in the Series IIA cab.

    What say you experts? What diesels are good candidates for this hybrid and why?
    ***************************
    2004 Discovery S
    2011 VW Jetta SportWagen TDI

  4. #4
    Join Date
    Jul 2008
    Location
    Stafford CT
    Posts
    238

    Default

    I recently drove a auto defender off road and could not believe how nice it was. I have a few questions to add.

    How does the length of the disco trans/transfer case compare to the series truck? If its longer things may get real tight with the merc 5 cylinder. What sort of revs will a stock D1 motor turn at 100mph? It may be out of the usable range of some of the diesels but I'm not sure. I'll be real interested in what you find. There are more and more people interested in doing this sort of thing I feel (me included)

  5. #5
    Join Date
    Oct 2010
    Location
    Galloway British Columbia Canada and Jefferson City Missouri
    Posts
    277

    Default

    I know you are looking for other options than a 200 or 300 TDI but you can buy a used 2-300 tdi out of a Disco they are pretty common in the UK. And they actually are not to pricey you get one and have it overhauled once it is here and you do not need to have to have custom adapter plates or anything else parts are available for it and you keep it all LR. I am putting a 200 TDI out of a Disco into my Series 2A 109 SW.
    1968 Series IIA
    1987 D90 Kid's project
    German wirehair Pointer (Wood Hound)

  6. #6

    Default

    I've had to take some time off from the hybrid build - for one thing, the stepdown converter in my Series III 24 v FFR (the 24 volt system is converted to 10 volts for the ignition) failed and my (former) mechanic friend "fixed" it by bypassing the converter - guess what, that move will explode the coil which results in an engine room fire so I've been distracted by that. Now, I'm back to collecting information for the build. As suggested, length is an issue and it's certainly attractive to stay with LR parts which argues in favor of the 200/300 tdi. I'll have to re-consider how much it would cost to source one from overseas.

    I really like the idea of the Isuzu 4bd1t or 4bd2t but the problem here in the good ol' USA is that none of the Isuzu 5 spd manual trannies which have an od 5th were sold here. There are several different ones which were sold all over the rest of the world and would bolt right up but I'm intimidated by the prospect of sourcing one from overseas which turns out to be misrepresented/bad and I'm left with no effective means of recourse.

    I'll take a look at the market for MB Sprinters - they are fast, big sail of a box and all - I was passed by one the other day on IH-10 in West Texas where the speed limit is 80 - he must have been going all of 85 or 90 - I did a double take when he went by!

  7. #7
    Join Date
    Oct 2006
    Posts
    1,181

    Default

    You can't use the Rover slush box because the starter drop is on the wrong side of the bell housing for a Tdi, assuming you go that way. You'd have to troll the UK junk yards for a RRC or Disco 1 Tdi bellhousing as well as the torque converter (it's different than a V8) You'll also find you have fit problems using an auto box due to the overall length of the BH and trans, especially in a short wheel base. It will shove the engine really far forward. You really need the shorty R380 5 speed manual trans and BH (which is unobtanium, but reproduced by Ashcroft in the UK) but as you want an auto is probably not an option. Non Rover Diesels will present their own issues, but mainly it boils down to finding an adapter to the ZF trans, using another gearbox and transfer case altogether. It may be easiest just admitting defeat and installing a Tdi. They aren't all that hard to come by.
    You will find that the Disco chassis is very very different from the series. You will have to work out the issue with the rear swoop in the chassis vis a vis the rear crossmember and tub supports. Do-able, but it is probably simpler to attach the coiler suspension bits to the Series chassis than to attach the series body to the (altered) coiler chassis. Just my .02.

    Robert Davis has perfected his drop-in kit for series trucks that uses the venerable Mercedes Benz OM617 5 cylinder 3L turbo diesel. These are as common as dirt and very cheap to obtain. His kit is super clean and you can even have AC if you want. If you are looking for a quick and easy way to get power + fuel economy, this is probably going to be the best option on a dollars spent basis.

  8. #8
    Join Date
    Oct 2006
    Posts
    1,181

    Default

    One other thought...
    The turbo diesel will get you the HP, but then you still have the relatively low output gear ratio in the diffs. Are you going to use the D1 axles? If you do then you also get into changing the steering. The Series steering won't play with the coil axles. You could go with a 100% aftermarket steering as the spline count on the D1 steering box is 3/4-48, exactly the same as VW beetles. There is an entire world of aftermarket bug steering schmidt, so if you want billet steering with custom wheels and all that crap it's an easy thing. My solution is to remove the steering shaft tube from the Series box and graft a 4 foot 3/4-48 shaft to the Rover shaft so I keep the taper for the 2A wheel. The lower end of the steering tube gets a simple thrust bearing and an adapter plate to fix it to the bulkhead and bulkhead support bracket.

  9. #9
    Join Date
    Nov 2006
    Location
    Mass.
    Posts
    1,807

    Default

    Look into an Isuzu diesel. I believe there are already adaptors available for them.
    If it were my truck though, I'd be working to put in the latest GM V8 in it.
    Jason
    "Clubs are for Chumps" Club president

  10. #10

    Default

    I'm back to thinking about my Series IIa hybrid build. I've sold the Isuzu 4bd2t I bought for this project - I was surprised at how easy it was to sell - wish I had asked more for it but I got my money back so I can't be too unhappy. Anyway, I'm pretty sold on swapping in the Mercedes 5 cylinder (OM617, I think). It will fit and, according to Robert Davis, it won't overpower my Series drivetrain. He makes a kit which includes all the necessary adapters and other bits which are represented to make the swap a weekend project. Maybe for him! Now to find a good motor - they seem to be relatively plentiful but not as cheap/easy to rebuild as the venerable Isuzu with its wet liners. Interestingly, a whole running W123 Mercedes ('77-'85) can be had for not much more than a used motor so I think I'll go that route and see if I can get the difference back by parting out the engineless car when the time comes. I'm probably not as sure about all this as I sound so I welcome any comments.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
About us
Unparalleled product knowledge. Our mission is to support all original Land Rover models no longer supported by your local Land Rover franchise. We offer the entire range of Land Rover Genuine Parts direct from Land Rover UK, as well as publish North America's largest Land Rover publication, Rovers Magazine.
Join us