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engine coolant drain tap

Discussion in '"Stock" Alpine' started by ozzie alpine, Jan 21, 2007.

  1. ozzie alpine

    ozzie alpine Donation Time

    My (as yet unused since rebuild many years ago) 1725 has a blank brass plug in the block where I assume the coolant drain tap should be.

    I noticed that my friends Gazelle (badged a Hillman in Australia), which also has a 1725, has a drain tube extending from the block, through a hole near the engine mount, to a small drain tap which faces forwards.

    Would the Alpine originally have had a similar system? Out of interest is the drain in the same position on 1500 and 1600 blocks? Should I worry about fitting a tap in place of the blank plug (hopefully I won't have to drain it too often!!)
  2. Nickodell

    Nickodell Donation Time

    Dave, my SV 1725 had drain taps at the bottom of both radiator and engine block, neither of which worked because they were always plugged with crud. I replaced each with a plug, which when you remove lets the water and junk out rapidly.
  3. napa 1

    napa 1 Donation Time

    Dave, my series 1 has the drain tap exactly as you described it on your friend's Gazelle. When I attempted to drain the engine this weekend to begin taking it apart, the radiator tap, worked great.... the engne drain was plugged just as Nick described it.
  4. Wombat

    Wombat Donation Time


    Drain pipe and tap is the same for the 1500 and 1600 (and probably the 1725 as well). My Series IV has a 1725 (Hillman Hunter block, I think) and also has the plug. I seem to rememner one of my Hillmans had a drain tap screwed directly into the block.
  5. lemansvk

    lemansvk Donation Time

    You can tell the source of your 1725 block from the engine number. In Australia, Hunter blocks start with 'H'; blocks from Super Minx IV will start 'AB03', from Hillman Gazelles 'AB7', Minx VI 'AB006'

    Cheers, Vic

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