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  1. Alex458

    Discovery 1 V8 Cummins 6BT Conversion

    So after test fitting the input gear I had made it was only engaging the gearbox splines by about 10mm which wasn’t nearly enough and would have failed pretty quickly. I had miss measured the daf gearbox output shaft and thought it extended further than it did. So I went back to the drawing...
  2. Alex458

    Discovery 1 V8 Cummins 6BT Conversion

    So after life getting in the way and having so much other work on I’m now back on the disco project finally! Bought my own lathe to save having to machine bits after work which has helped! So transfer box input gear machined, pressed the machined down daf prop flange In and welded up. It was...
  3. Alex458

    Discovery 1 V8 Cummins 6BT Conversion

    Been a while updating this, loads of things seemed to get in the way (including the wife’s horse lorry failing its test) Finally had some time to push on a bit but with Christmas approaching not sure how much more I’ll get done this year! So I gas cut the adapter plate out of 25mm steel and...
  4. Alex458

    Discovery 1 V8 Cummins 6BT Conversion

    So I’ve made a little progress with the gearbox to transfer box adapter plate On the third attempt managed to get a shape which worked to incorporate the gearbox mounting holes and also get the transfer box holes in the correct location. On that drawing I only have the transfer box bolt holes...
  5. Alex458

    Discovery 1 V8 Cummins 6BT Conversion

    I did think about train weight actually but that’s a bridge I’ll cross when I get there and I know what it actually weighs. I have access to a few weighbridges so will see when it’s done. Yes the engine was from a DAF truck, it’s a 150bhp Ti with a Bosch VE rotary pump and a non wastegated...
  6. Alex458

    Discovery 1 V8 Cummins 6BT Conversion

    Gearbox I’m using is a manual and the one out of the Daf lorry a ZF-S5-42. This I’m close coupling to the LT230 transfer box. The axles will no doubt be upgraded at a later date as I know at the minimum I’m going to snap halfshafts. As far as Serious off roading I don’t do a huge amount, my...
  7. Alex458

    Discovery 1 V8 Cummins 6BT Conversion

    Thanks Haza Still got lots to figure out but things are going well so far. Hoping to get the transfer box adapter and shaft sorted this week, then I can modify the transfer box to chassis mounts and props.
  8. Alex458

    Discovery 1 V8 Cummins 6BT Conversion

    Forgot the pic with the engine sat on the mounts
  9. Alex458

    Discovery 1 V8 Cummins 6BT Conversion

    So after a mock up in place, clearance between the axle and sump was a concern, I have turned the sump round from its original position so the large part of the pan is at the rear. managed to get the correct replacement oil pickup pipe from China for £30 once I’d found the Cummins part number...
  10. Alex458

    Discovery 1 V8 Cummins 6BT Conversion

    Right I’ve taken quite a few pics along the way of what I’ve done so far. This is my friends fault, had a conversation saying I’d love to put a 6bt in it etc but would be a fair bit of work. A week later he rings me saying he’s got a 6bt for me if I want it! So now I had to do it really...
  11. Alex458

    Discovery 1 V8 Cummins 6BT Conversion

    So a bit of a serious delay in updating this but things changed a little.... not sure if I should start a new post about the new direction I’m going in! So after I thought I sorted the V8 it all of a sudden started overheating and blowing its water out the second it warmed up and you drove it...
  12. Alex458

    Discovery 1 V8 Cummins 6BT Conversion

    We’re finally runnng properly again! After changing plugs, leads, coil, cap and rotor arm and seeing no difference I plugged in the ecu to see that not much seemed out of place bar both lambdas pegged rich and the iacv only showing 12% on a 750rpm idle(should be 30ish) From this I decided I...
  13. Alex458

    Discovery 1 V8 Cummins 6BT Conversion

    Well it looks like I have well and truly upset the v8..... Well more specifically the bloody ecu, today I rebuilt the gas vaporiser with new diaphragms etc, fitted a new coil and a set of plugs and reset the timing to where it was before I messed with it. The result? It’s running worse than...
  14. Alex458

    Discovery 1 V8 Cummins 6BT Conversion

    And have looked into ms but seemed a little expensive at the moment! Forgot about megajolt so might have a look into that as running timing curves appropriate to lpg would be nice
  15. Alex458

    Discovery 1 V8 Cummins 6BT Conversion

    Aye I’ve always set it up in favour of the lpg to be honest, mainly because that’s what it runs on the majority of the time, Thing is it’s never been this bad on petrol before, think I’ll try putting the timing back to where it was even though it was an indicated 17deg btdc. Have read a few...
  16. Alex458

    Discovery 1 V8 Cummins 6BT Conversion

    Thanks Weldy! I work for an agricultural engineer so I owe a lot to what I’ve learnt there! Progress has been slow this last week it seems I’m now being plagued with an ignition issue and an LPG issue. It all started when I thought I’d check the ignition timing, put the timing light on it to...
  17. Alex458

    Discovery 1 V8 Cummins 6BT Conversion

    Arch is now all welded in and undersealed and today I managed to finish the exhaust off! The original plan changed somewhat as I started off thinking I would fit a full universal exhaust kit with center and rear silencer and a 3” tip. What I ended up doing was a side exit with only a center...
  18. Alex458

    Discovery 1 V8 Cummins 6BT Conversion

    So today I finished and painted the tank cradle I’ve made, I probably could have repaired the old one but in my mind it was too far gone to be worthwhile repairing. So new one I made out of 3mm steel, I diddnt put the radiuses in the new one as it takes some some setting up on the press brake...
  19. Alex458

    Discovery 1 V8 Cummins 6BT Conversion

    Well today didn’t go as planned, I wanted to get some new pics and weld in a panel however ended up working with the electrician all day. Partly to save some cash and so the jobs got finished today we needed done. I see what your saying dieseldog about compromises and such. I live on a farm so...
  20. Alex458

    Hello All

    Ok just had look at some hd tank guards and might have to make one! I’ve started a build thread anyway with a pic of how I first bought her, and will update with some current and my tank cradle efforts tomorrow!
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