lock down restoration project

Discussion in 'General chat' started by OHP, Apr 26, 2020.

  1. OHP
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    OHP

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    I know it's not a BMW but during this period of lockdown, I have had the opportunity to make a start on restoring a WW2 marine engine.

    a little bit of history:

    IMG_20190804_132601.jpg

    this little unassuming engine was fitted to a WW2 RML ship, it ran the 24v generator providing the lighting and the ancillary systems aboard this ship.


    the RML (Rescue Motor Launch) was a high-speed ship that would rush out to recover our downed pilots in the English channel, sadly there are not many RMLs around anymore due to them being all wooden and rotting away.

    this engine is from the ship pictured below which sadly slipped its morning, sank, and was broken up... another piece of history lost ( well almost)

    20151019_150101-e1448567063996.jpg

    the Engine, a Coventry Victor WD1 was in a sorry state when I received it. the engine was submerged for some time and to make matters worse, seawater had managed to get down the exhaust swan neck into the cylinder causing the Piston and exhaust valve to become seized solid.

    96100087115557c1eae572d391a8669f.0.jpg

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    445997c3e77e12732cf8f890a2250acb.0.jpg

    IMG-20190816-WA0002.jpeg


    to be honest, its been a bit touch and go but I'm confident that she will be running again.

    here's what I've done so far:

    IMG-20190926-WA0004.jpeg

    as you can see from the picture above the Piston is pretty far gone, I had to push it out using a 10t hydraulic press. I left the piston soaking on the bore with engine oil for a good month, the crown was heavily corroded so I had to machine the crown down 2 mm to remove the pitting using a lathe, the rings were seized in solid so I had to destroy them getting them out, luckily they are still available and I have ordered a set :)

    image_33c9aa68-62ac-4ee0-aebf-03cbeb1ae4b520200426_022738.jpg

    image_a8f41d49-2f45-422a-827e-8ef7e1418b9820200426_022743.jpg

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    there is plenty of metal in the crown to prevent crown flex ( these engines are over-engineered) so all is good.

    some of the more astute of you may be pondering, you have just altered the compression height of the piston and this will reduce compression !!!!. Luckily these engines have shims on the cylinder block where it bolts onto the crankcase, so I can preserve the compression height that way by removing shims effectively lowering the cylinder block changing the stroke +- 2-5mm.

    next, I moved onto the head:

    again it was a mess.

    445997c3e77e12732cf8f890a2250acb.0.jpg

    full of corrosion, also seawater was used to cool this engine so the water jacket galleries were full of rust...

    none the less I cracked on...

    IMG_20200418_191217.jpg

    IMG_20200418_191312.jpg

    the water jacket holes in the head need to be built up again due to corrosion enlarging them. ( a job to do in the final stages)

    it cleaned up well, was a bit concerned with the valve seats but I managed to re-grind them, leak tested and they hold tight.

    all original parts cleaned and refitted.

    next to the Cylinder block:

    a similar theme too, corrosion, water jacket corrosion, and core plugs corroded through, the lining is scored and pitted but not too far gone, I will re-hone and fit oversized piston rings to ensure compression ratio is correct.

    IMG_20200422_173727.jpg

    IMG_20200422_173735_1.jpg

    IMG_20200422_174148.jpg

    top end completed, as far as I can for now ( waiting on rings) but shes taking shape again, and I'm quite pleased with the progress.

    IMG_20200422_193319.jpg

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    started stripping paint from pannes and covers whilst I wait for parts, nice to see the writing hidden by years of paint.

    IMG_20200425_161027.jpg


    what's next :

    I will begin disassembling the crankcase and clean and repair parts as I go.

    IMG-20190926-WA0002.jpeg


    thanks for reading Guys :)
     
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    Last edited: Apr 26, 2020
  2. Alan Gunn
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    Alan Gunn

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    Video next of it running.
    Doing a fantastic job by the looks of it keep us updated.
     
  3. slim_boy_fat
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    slim_boy_fat WARLORD Site Supporter

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    Great effort so far, and well done for taking on a worthwhile project. Keep the updates coming.(n)
     
  4. OHP
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    OHP

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    Tackled the water pump today.

    Again a bit of a mess

    IMG_20200426_150515.jpg

    Disassembled and cleaned
    IMG_20200426_163912.jpg

    IMG_20200426_163900.jpg

    Re assembled and tested.

    IMG_20200426_164411.jpg

    Looks like these guys ain't around anymore

    IMG_20200426_163919.jpg
     
  5. OHP
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    OHP

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  6. snrbrtsn
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    snrbrtsn WARLORD Site Supporter

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    Wow! An interesting project & history
    On completion you can kiss goodbye to the National grid, wind farms, nuclear, coal etc! and be suitably self sufficient
    (once you change to 24v LEDs through) (y)
     
  7. OHP
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    OHP

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    I'll just get a 240v altinator generator for it sod the LEDs
     
  8. OHP
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    OHP

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    Was thinking of doing an engine swap in my car with it !
     
  9. OHP
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    OHP

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    The more I strip the old paint off, the more I feel she should have a paint job to show her original features.

    I'm thinking about clear lacquer for the aluminium parts and a nice hammered gun metal grey paint for the head,cylinder block and crank case.

    IMG_20200426_211331.jpg
     
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  10. slim_boy_fat
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    slim_boy_fat WARLORD Site Supporter

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  11. OHP
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    OHP

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  12. slim_boy_fat
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    slim_boy_fat WARLORD Site Supporter

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    American Group, parent Co for many brands, it appears? :\\\\

    https://ittcontrols.com/products/
     
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  13. OHP
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    OHP

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    Sorted the oil pressure guage today

    IMG_20200427_180619.jpg

    After

    IMG_20200427_191352.jpg
    IMG_20200427_191358.jpg
    IMG_20200427_191355.jpg

    I'm going to see if I can find a similar oil pressure guage dial template online and fit it over the old one it's pretty knackered.
     
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  14. Jonnyg123
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    Jonnyg123 Site Supporter

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    Is a remap on the cards :LOL:
     
  15. OHP
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    OHP

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    I can let out the fuel pump

    Was looking for a small turbo the other day, found one from a snowmobile on eBay haha.
     
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  16. Jonnyg123
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    Jonnyg123 Site Supporter

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    It will be one hell of a lawnmower when it’s finished lol
     
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  17. snrbrtsn
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    snrbrtsn WARLORD Site Supporter

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  18. Wynne71
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    Wynne71 Site Supporter

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    Great project.
    There is a beauty in the simplicity of this engine, especially as you are being so sympathetic in the rebuild, you don’t see materials of that quality very often.
     
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  19. OHP
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    OHP

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    That's an Idea, unless there's someone here with awesome Photoshop skills, if I was to take a close up of the dial and they would be so kind as to "clean it up" digitally then I could resize and print it off and fit it
     
  20. OHP
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    OHP

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    Not done much today apart from cleaning the Engine governor/start mechanism.

    IMG_20200428_084530.jpg

    Starting on the crank case tomorrow.
     

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