Hillman Imps / Our other cars

Discussion in 'Members Gallery' started by pmcgsmurf, Oct 27, 2017.

  1. OP
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    pmcgsmurf

    pmcgsmurf MB Enthusiast

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    We have a friend with a small machine shop who is an expert in these engines, he is doing the machining work leaving us to do the nuts and bolts and finishing.
     
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  2. OP
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    pmcgsmurf

    pmcgsmurf MB Enthusiast

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    Engine coming along nice, should have it back here for assembly by the weekend.

    Block bored and honed.

    IMG-20191027-WA0000.jpg
    IMG-20191027-WA0002.jpg

    Head skimmed too.

    IMG-20191028-WA0002.jpg
    Head was actually warped.
     
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  3. Justintyme

    Justintyme Active Member

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    Was it out by much ( the head I mean)? Lovely to get them back looking like that. Now you have the engine basics right.
     
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  4. OP
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    pmcgsmurf

    pmcgsmurf MB Enthusiast

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    Not by much but ties in with the problem the engine had.
    These engines are prone to a build up of coolant sludge/corrosion around cylinder 4 at the back.
    Looks like there has been a blockage here and this has caused the head to overheat slightly in this area.
     
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  5. Bellow

    Bellow MB Enthusiast

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    Isn't that the old style of head (before the 'straight edge' one) which were warp prone?
    Why is it piggybacked to another to get skimmed - to get the face horizontal?
    How did the gear ratios work on the BMW conversion? A bit gappy or has the K1 got enough of a torque spread to cope?
    Nice Imps BTW - I have a soft spot for lightweight and simple cars - see my avatar!
     
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  6. OP
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    pmcgsmurf

    pmcgsmurf MB Enthusiast

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    Yes but it is the original with engine number that matches car. ;)
    Not too many cars going now that still have the original engine fitted.

    Now though with a better water pump and high efficiency radiator overheating is not that common.
    A lot of the problems in the past were due to the poor efficiency of the radiator.

    Yes, easiest way to level it by bolting it to a mate.

    It works well, you have to rev it like a bike to get to the power band and you can easily do 70 in 3rd.

    There is a lot to be said for simple cars, simple = easy to fix.
     
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  7. Bellow

    Bellow MB Enthusiast

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    'Original numbers' car then. I'd imagine that is pretty rare.

    Modern tech to the rescue. Reminds me of Charles Morgan and Megasquirt on his SM and W115. Replace worn carbs or dodgy old injection kit with much better fuelling.


    Couldn't really be any other reason.... Cunning - I like!

    That must be pretty short geared. A mate has a first series fortwo with a 185hp Honda Blackbird engine that will nearly do 70mph in first gear. Top end of fourth is around 110mph - and it gets there very very quickly. Tempted to do the same but with an R1 engine. If you'd been in his - you'd be tempted too. Not least because.....



    And a sight cheaper usually. My fortwo wants a new ESP/ABS ECU. £1700 please. Or bin the system and install the R1 engine?
     
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  8. OP
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    pmcgsmurf

    pmcgsmurf MB Enthusiast

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    Bit more work on the engine (well quite a lot actually).

    Crank polished and ready to go back in.
    IMG-20191223-WA0004.jpg

    Back in
    IMG-20191223-WA0001.jpg

    Bottom end all buttoned up.
    IMG-20191223-WA0009.jpg

    New pistons
    IMG-20191223-WA0005.jpg

    Final top end adjustments (ended up changing pistons, going +20 thou re-boring and re-honing)
    IMG-20191223-WA0002.jpg

    Re-cut valves
    IMG-20191223-WA0019.jpg

    New seals (added to exhaust, original does not have seals on exhaust valves)
    IMG-20191223-WA0014.jpg
    Head ready to go back on.
    IMG-20191223-WA0020.jpg

    IMG-20191223-WA0012.jpg
     
  9. OP
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    pmcgsmurf

    pmcgsmurf MB Enthusiast

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    Engine running after first rebuild.




    Then after going +20 thou. and making a few other changes.
    Sounds a bit tappety but is using running in oil (thin) and will be run, then re-torqued and oil changed to thicker oil.
    There is a little but of wear in the cam followers/buckets so this will be addressed after the run-in period.
    We may tighten the gap to the valves to reduce the tappety noise depending how bad this sounds later, simple enough job on the cam carrier.

     
  10. grober

    grober MB Master

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  11. OP
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    pmcgsmurf

    pmcgsmurf MB Enthusiast

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    I wouldn't think very much but it may help a little.
    The bolts on these are not all that tight so not sure how much this would help the light engine with the heavy sump.

    To be honest it would be fair to say the blocks were not very stiff at all.
    This particular block is what is referred to as a "curly block" as it has less material at the top as well as a lot of other little things that lets us know it is very early.
    They quickly went to a straight edge at the top as this meant more material so more stiffness.
    No one wants the old blocks or heads (with no oil drain) for doing anything (tuning/modding) with, they all want later heads and blocks.

    Then there is us, we (me) are weird, I don't even want a heater blower, keep it original I say, well certainly this one, we have others with all the nice little mods.
     
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  12. OP
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    pmcgsmurf

    pmcgsmurf MB Enthusiast

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    On another note, went to collect engine today in a W212, came with with W212, engine and an ML 270!
     
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  13. Justintyme

    Justintyme Active Member

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    The satisfaction after fitting the shaft, and turning it for the first time.... then adding the pistons and pump. !!!:):):)
     
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  14. OP
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    pmcgsmurf

    pmcgsmurf MB Enthusiast

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    Engine back in and been out for first test run.

    20200128_190557.jpg

    20200128_190608.jpg

    Have done a few subtle mods that wont take away from the originality.

    1. Changed the sold thrust bearing for the clutch to a roller type bearing (on solid you get that noise and engine labours when pressing clutch).
    2. Switched over from positive to negative earth.
    3. Added a temperature sender (this model never had one).
    4. Added an Oil Pressure sender unit.

    Not run any wires to the front yet for the gauges, may do this and fit some period gauges on one of those little bracket units.

    Also like the idea of having the sensors talking to an android app and having this on a phone or tablet so going to see of one of the lads can knock something up using an arduino or similar over bluetooth.

    She also has a reconditioned water pump fitted and we changed the front windscreen seal as it was well perished being nearly 57 years old.

    First test run was about an hour round local, will have another run out on Wednesday morning.

    Then at lunch time it's off to Glasgow George Square for the Monte Heritage run, ready just in time.
     
  15. OP
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    pmcgsmurf

    pmcgsmurf MB Enthusiast

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    Mildred made it safely along to George Square in Glasgow for the start of the Monte.

    Conditions on the day were terrible, driving rain and winds, we passed many cars on they way there and back that had aquaplaned into the crash barriers.
    Even with multiple police cars sitting with blues on many drivers were still determined to drive way beyond a safe speed.

    We had to do a stopover on the way home as trains had been cancelled locally so we picked up a couple of the young ones that had got stranded half way between Glasgow and home.

    All in a good day out, hats off to the organisers, Glasgow Council for giving us the run of George Square and then SDCCC who laid on the haggis neeps and tatties etc. when we got back.


    20200129_185338.jpg
     
  16. Justintyme

    Justintyme Active Member

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    So all went well on "The Maiden Voyage"... attracted a lot of admirers, I'd say.
     
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  17. ToeKnee

    ToeKnee Active Member

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    As you all like engines, here's my old 383ci Chevy V8, pictured whilst finishing off the ancillaries. Just shy of 500bhp and just over 500ft/lb torque. Went in my cobra replica, 1100kg and no driver aides except my right foot. FB_IMG_1580375994287.jpg
     
  18. D-18

    D-18 Active Member

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    Oh, we're getting all 'Crocodile Dundee' now are we?

    'That's not an engine, this is an engine.....'

    2 litres.jpg
     
  19. OP
    OP
    pmcgsmurf

    pmcgsmurf MB Enthusiast

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    Very nice, bit of a difference to the little engine in Mildlred. ;)
     
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  20. OP
    OP
    pmcgsmurf

    pmcgsmurf MB Enthusiast

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    That's cool, I like that.
     
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