block ref

9 comments

  1. imported post

    No, a 1071 block will have AEG 151 cast into it.

    You can machine the top of a 1275 block down tomake it the same height as a 1071.

  2. imported post

    There are many mysteries on the mk1 minis> My 1071 1964 has bolts for the mains block is marked aeg151 and the main caps are marked C269. Crank is AEG171. Rods are marked AEG177 These early cars will always keep you learning. I hope i didn't confuse everyone more. Regards Scott

  3. imported post

    [b]Mk 3 S Meister wrote: [/b] “No, a 1071 block will have AEG 151 cast into it.

    You can machine the top of a 1275 block down tomake it the same height as a 1071.

    I have a AEG 312 block fitted to my march '64 1071 S. It is in its original factory green paint and has its 1070 ally I.d plate on the back of the block which looks like an original fitment. The block has the same main bearing cap stud/nut arrangmentas the 1275 version, not the bolt type of the aeg 151. The deck height of the block is approx 219mm as opposed to the 226mm of the 1275.At first I thought it must be a skimmed down block but after closer inspection with a 1275 312 block I'm not so sure:

    Theblock has the manufactures original piston code numbers inside their diamond symbols stamped into the top face.

    The depth of the stud holes is approx 22-23mm which is the same as the 1275, also the counterbore detail around the stud holes is identical.

    The engine no. plate twist type rivet holes are the same depth on both blocks

    This all pionts to the block being made for a 1071 motor. Did the last of the 1071's use the laterblock, or were replacement blocks for the 1071 made from the later casting?

    regards bob

    ps. I'm told you can tell the year of the block by the main bearing cap numbers, mine are 1p 2514

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