1949 BSA B31 Engine Rebuild part 2

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  • Опубликовано: 17 янв 2025

Комментарии • 10

  • @singhkarm6520
    @singhkarm6520 Месяц назад

    Good work

  • @Cobra427Veight
    @Cobra427Veight 2 месяца назад +1

    Fixer up , don't worry about the $ too much , it will be great for the mind when it's all done , I really enjoy riding my 54 b33 , I had lots to fix as well . Cheers

    • @andyfearn6609
      @andyfearn6609  2 месяца назад +1

      @@Cobra427Veight absolutely... I'll get a kick out of it when finished. Highs N Lows of messing with old vehicles.... I'll grow out of it one day :)

  • @56REME
    @56REME 2 месяца назад +1

    Bad Luck.
    Am thinking metal spraying for the bearing journal,and that the cam lobes might be repaired by building up with weld [Nickel based rod ?] and ground back
    Although not mentioning the condition of the cylinder you did say you had plenty of compression.Could the existing piston not be re-used with new rings and honed barrel,?.

    • @andyfearn6609
      @andyfearn6609  2 месяца назад

      @@56REME yeah bit of shame... Just weighing up the options at moment. They are fixable ...but it's how much i invest in getting them repaired (apparently the shafts need separating from flywheel to recut) versus finding a healthier used one. The cylinder could go again with a hone and fresh rings. Im in the tricky spot of drawing the line :)

    • @56REME
      @56REME 2 месяца назад +1

      @@andyfearn6609 Not so sure the shafts would have to be removed,but you would need a lathe with a reasonably large centre height to accomodate the diameter of the flywheel for sure.Thinking too that the faces of the followers will be pretty damaged going by the state of the cams,but to reface [weld/regrind] those would be relatively easy.

    • @andyfearn6609
      @andyfearn6609  2 месяца назад

      @56REME interesting... Luckily the followers have survived and i have found some good used cams... I'll pop a video of the head and cam followers next and keep thinking about the crank. Just glad i didn't carry on running the poor thing.Cheers for advice 👍

  • @PATRICKWOODGER
    @PATRICKWOODGER 2 месяца назад +1

    can you not use bearing fit? I am putting a b33/ b34 crank in my b31, it was rebuilt but not by me. the barrel is off and the crank feels ok. will know more when i split the cases

    • @andyfearn6609
      @andyfearn6609  2 месяца назад

      @@PATRICKWOODGER yeah could do. Plenty of products out there for this. Still having a think. Cheers.

    • @PATRICKWOODGER
      @PATRICKWOODGER 2 месяца назад +1

      @@andyfearn6609 I had a loose bearing on the crank on my a65 firebird. i used loctite bearing fit but had to add a shim behind it. It was so well fixed it took a hell of a lot of heat and persuasion to move it. If it's not that loose it doesn't actually rocks i wouldn't worry, with a new bearing it's not a problem, main thing is the big end is good. I bought a bantam many years ago from him. The v5 didn't match either the frame or engine number and I had paid for delivery and he kept making excuses, took months. Never again