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Thread: 300TDI for my 109

  1. #1
    Join Date
    Mar 2007
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    Airville, Pa.
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    Default 300TDI for my 109

    Having struggled with several issues with my SIII 109 and needing to use it as my pickup truck, I thought I'd pull the 3.9 V8 from my rolled 88 chassis and convert the 109 to return it to service. Instead, I now have a 15k mile 300TDI from a MOD Defender, with R380 5 speed (that might have issues), rad and intercooler.

    I've been looking at the numerous boards with conversion info, and think that I will use a late SIIA trans with a Fairy OD behind the TDI. Once I sort out the R380, I will consider that swap which will require moving the mounts and a chassis crossmember as I did in the wife's SIIA V8 109.

    I'm starting to gather the assorted bits, including a right side engine mounting bracket, but I am concerned about fitting the rad and intercooler with the setback rad panel. I might have to go for the Defender grill and bonnet for adequate space.

    Bob

  2. #2
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    May 2005
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    Barnegat, NJ
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    I would love a 300tdi in my 88. If I ever get the cash together I really would like to put a diesel (prob a 200) into my SIIa.
    "QQ Rover" -- 1962 Series IIa 88"

  3. #3
    Join Date
    Jan 2007
    Location
    West Chester, PA
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    The 300TDi in Frank's RRC is really impressive. It sounds good, and it delivers remarkable economy, so that seems like a great choice for a 109. Having lived with an R380 for 15+ years, I'm not a huge fan. A Series IIA gearbox is strong and has 'character. The 'Stage 1' look with a Defender front panel seems like it would be fine if there's not room for the setback panel but maybe a modern-style radiator would be small enough for the radiator panel in the original position, given the size of a stock IIA radiator? It'll be interesting to hear how the gearing works out.

    We're going to want to see a picture or two as things progress . . .
    '92 Range Rover
    '51 80"

  4. #4
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    Funny. I love my R380, except for the failing bearing....
    '59 SII

  5. #5
    Join Date
    Oct 2006
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    Click image for larger version

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ID:	2060You can keep the stock rad support in its original location if you go with the series IIa tranny. I was able too, using my stock series III tranny on my 200 conversion. It took some trimming to the rad support and modifations to the rad/intercooler frame though. If you go with the R380, pretty sure everything's got to be moved 4 inches forward. Also, the 300 tdi conversion is going to require mods to both of the frames motor mount locations. I'm no expert, but I'm pretty sure I came across that while researching the 200 conversion. Last, don't forget to budget in your new exhaust and possibly custom oil cooler lines. Good luck, you're gonna love it and getting almost 25 mpg's is icing on the cake.

  6. #6
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    Mar 2007
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    Airville, Pa.
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    Ken, thanks for the pics. I'd rather keep the setback rad panel.....

    I picked up a right side engine mount bracket that spans the oil filter and uses the factory right side chassis mount location. There are two sets of threaded holes on the left side of the engine block, and the front set is supposed to be at the same location as on the 2.25 to allow use of the factory left side chassis mount. No oil cooler lines came with the engine, but I bought a set of AN adapters years ago that I thought were for a 3.9 but were apparently for this engine. I'll try to find them.

    I'm looking forward to the conversion, even if I didn't already have enough projects.

    Bob

  7. #7
    Join Date
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    Should be a great combo in that truck - you'll love it! Good luck on the conversion and take plenty of notes and pictures.
    '89 Range Rover
    '95 D90

  8. #8
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    Mar 2007
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    I plan on taking photos as I go, but I'll likely get busy and forget..... I'm still gathering bits and noodling plans while I remove the un-needed bits from the engine. I did find a sheared clutch cover bolt, but otherwise everything looks great. I need a starter, alternator and exhaust down pipe for the fitting, and figure out what to do with the PS pump.

    Bob

    Quote Originally Posted by Frank84 View Post
    Should be a great combo in that truck - you'll love it! Good luck on the conversion and take plenty of notes and pictures.

  9. #9
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    Bob,

    Sounds like an great project, and with your skills should come out excellent.

    Is your 109 LHD or RHD?

    Tom P.
    Tom Proctor
    1965 exMod 109
    1995 RRC LWB w/EAS

  10. #10
    Join Date
    Mar 2007
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    Airville, Pa.
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    Hi Tom,

    The 109 is a 1980 RHD, now on a military spec chassis. I think I will convert the R380 to a short bellhousing and use it behind the 3.9 V8 in the 88.

    I have way too many projects.....

    Bob


    Quote Originally Posted by Tom109 View Post
    Bob,

    Sounds like an great project, and with your skills should come out excellent.

    Is your 109 LHD or RHD?

    Tom P.

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