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Bigj66

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Everything posted by Bigj66

  1. Bigj66

    TD5 to V8

    Another question regarding the issue of leaking thin walled cylinder blocks caused by poor machining. Was this quality issue ever resolved by Landrover before production of the Thor V8 ceased? Or, are the Thor engine blocks just as likely to have similar problems?
  2. Bigj66

    TD5 to V8

    My R380 has the higher ratio transfer box off a Disco 2 fitted. Reading through a couple of members build threads I get the impression that this setup could be a bit over geared for even the 4.6 V8. I’ve always assumed the V8 will out perform any of the Landrover Diesel engines in terms of both power and torque so I’d be interested to hear from anyone who has experience of this. The air box arrangement also seems to present some challenges to get right. With that in mind does the GEMS engine plenum provide a bit more space for pipe work etc than the THOR?
  3. I ended up buying that spring and fitting was no more difficult than the similar ones from the usual suppliers. Well worth the price and effort👍
  4. Bigj66

    TD5 to V8

    Yeah I’ve seen his looms and they look good but I’m talking more about stripping out any redundant TD5 wiring but keeping the bits for things like the starter and alternator as well as temp gauges etc. I really need to study the diagrams and look at my loom in more detail but I’m not fazed by doing that sort of work. I recall that Nige sells loom plugs so I can make sure any alterations are electrically sound and safe.
  5. Bigj66

    TD5 to V8

    So if the engine harness also contains the charging and instrumentation wiring then it sounds like I need to retain it and then adapt it for the V8 requirements. Or strip out the TD5 redundant wiring and make a separate engine loom for the V8.🤔 Either way it will be doable. Cheers.
  6. Bigj66

    TD5 to V8

    Questions about the wiring loom arrangement on a 110 TD5. Is the wiring loom split into sections that can be easily isolated from each other without affecting other parts of they system? I have this circuit diagram but it doesn’t tell me much about the layout. landroverweb.com/Pdf-files/Defender%20MY2002%20Wiring%20Diagram.pdf I’m thinking about the engine loom in particular so for instance, could I disconnect the ECU and the injector loom but retain the charging/ instrument circuit wiring? Same for things like the throttle pedal harness. Could this be simply unplugged from the main loom once it’s no longer required by the V8? Is it possible to buy caps that can fit over the end of unused loom plugs to prevent dirt or moisture from getting in rather than wrapping them with electrical tape etc? Chopping wires isn’t really my thing so if it’s all one loom then I’ll need to think about unwrapping it, pulling the redundant wiring out and then rewrapping it.
  7. Bigj66

    TD5 to V8

    ISV? is that like BTDT?🤷‍♂️
  8. Bigj66

    TD5 to V8

    Cheers, that’s an easy fix then.👍
  9. Bigj66

    TD5 to V8

    Does the Thor use a cable as standard or did they move to fly by wire?
  10. Bigj66

    TD5 to V8

    Could I just fit a complete throttle assembly off a P38 Thor? Or a Defender tdi pedal maybe 🤔
  11. Bigj66

    TD5 to V8

    One other query. Will I need to change my throttle pedal as I think it’s currently an electronic type rather than a cable. What does the Thor engine use?
  12. Bigj66

    TD5 to V8

    I probably need to look closer at options 1 or 3 and decide from there I think. I’ll take a look at your build thread again.
  13. Bigj66

    TD5 to V8

    Do you mean fit the MS ECU plug to the existing loom?
  14. Bigj66

    TD5 to V8

    Thanks Filip I have a CPS on my Cosworth engine but it’s fitted to the crank pulley. Is this where the MS timing wheel is located on the V8?
  15. Bigj66

    TD5 to V8

    That’s great information, thanks very much.👍 If using MS then, I will only need to find a complete engine and don’t really need to worry about things like the ECU and loom do I? There are some out there on EBay etc but some are high mileage and some are exchange only so it might take a bit of patience before I find a suitable one. If I can find a complete vehicle then that’s great but I don’t want to be paying over 3k for a vehicle just for its engine.
  16. Bigj66

    TD5 to V8

    Ok so is that because they have a different bell housing bolt pattern to the earlier V8s? Maybe a different crank bolt pattern for a flywheel too...🤔
  17. Bigj66

    TD5 to V8

    Out of curiosity, do the later 4.4 engines also fit or are they a completely different engine all together?
  18. Bigj66

    TD5 to V8

    Excellent news. The only big challenge now is to find a suitable engine complete with all ancillaries...🙄
  19. Bigj66

    TD5 to V8

    Cheers, the argument for MS has been convincing chaps 😂 But, have I understood correctly that the Thor engine will not be compatible with the in tank pump as used on the 3.9 and 4.2 SERP engines? My idea was to replace the TD5 pump with one of those. Here is a summary of what I think I need to complete this swap. Feel free to correct or add anything that I’ve missed. R380 V8 bellhousing R380 Defender V8 input shaft Manual V8 flywheel Spigot Bush V8 Defender clutch and slave cylinder V8/TD5 hybrid exhaust or bespoke stainless system 4.6 engine with MS ECU (engine to be confirmed but preferably a Thor) V8 Defender radiator TD5 airbox reused? Engine mounts altered to suit Power steering pipe work modifications as required RRC 3.9 in tank fuel pump with adjustable FPR Remote oil filter (Mocal)
  20. I had a very similar problem with my Softdash RRC some years ago and it turned out to be the loom had been touching the exhaust at some point before I owned it and had burnt through the insulation. The loom had been tucked back up but the damage had not been repaired. Every now and then when going over a bump or cornering the bare fuel pump feed earthed out on the chassis and blew the supply fuse. When I tested the loom it seemed okay as the wire was no longer earthed and the supply voltage to the pump was fine, until the next time it touched and so on. Took ages to trace it as it was quite high up in the chassis but although this fault sounds similar, it’s strange that the pump always runs immediately after it cuts out which is why I asked my original question. Ordinarily, you would expect a fuse to blow if there was even a temporary short to earth but maybe this is just an odd case 🤷‍♂️
  21. Bigj66

    TD5 to V8

    Ah, ok 👍 So just to clarify, a Thor engine will only run with its matching ECU which would be quite difficult to run as a standalone or even with MS due to fuel pump compatibility? Next best option would be a GEMS 4.6 engine using either an unlocked factory ECU or, MS?
  22. Bigj66

    TD5 to V8

    Just for comparison, do you know what pressure the 3.9 SERP runs at?
  23. Bigj66

    TD5 to V8

    It looks very similar to the Emerald K6 I used on my Cosworth V6 so no dramas with making a loom but just having to power up a factory ECU would have saved me a bit of work and kept everything as standard as possible that’s all. I believe that RPI will unlock the GEMs ECU for a fee so I might enquire with them to check. I noticed when reading your very excellent write up of the installation into the ambulance that you needed to make a pointer for the timing. Does that not come as part of the kit? The other thing is that I’m not so savvy with mapping and tend to leave that to those who are which is why I’m a bit more nervous about going down the aftermarket route but then again I’ve never used the MS so not sure how easy it is to use when you have issues like you had with your cold idle? Do I also need to plan for a remote oil filter? It sounds like the Thor engine is the one to have. Will that run off MS too? Does the Thor have the same factory ECU as the earlier 4.6? Thanks all for the help and feedback so far.
  24. Bigj66

    TD5 to V8

    Cheers. I’ve only just had my rebuilt Ashcroft box put back in so I was really hoping I would be able to leave it in situ and unbolt the bell housing and the input shaft assembly with access through the engine bay once the engine is out. If it can’t be done then so be it, I’ll have to drop the box too but if I can avoid it I’d like to. Ashcrofts also sell the V8 bell housing. If I was to use the 14CUX ECU with a 3.9 SERP engine then there’s only a few additional wires needed to get it running isn’t there? I was reading on the RPI website that the 4.0 is basically the same Cc as the 3.9 so if that’s the case, would a 14CUX ECU run a 4.0 Disco or P38 engine ok? I also read that the 4.6 GEMS ECU has both a fuel and ignition chip that can be mapped but that on the P38, they were coded to the vehicle itself and to retrofit to another vehicle, the ECU will need to be ‘unlocked’. Can anyone explain how the various ECUs are wired or point me towards some information please? I’m struggling to clearly understand what options are open to me. If I can use the GEMS factory ECU then I would prefer to have a 4.6 but if it’s too much hassle to wire in and get running then I’ll look at one of the smaller capacity engines.
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