old sidevalve engine...is there really NO valve adjustment ?

Discussion in 'Help Wanted' started by pp-admin, Jul 21, 2016.

  1. pp-admin

    pp-admin Member

    ok so iam a not a gifted engineer but then you all realise that anyway !!

    i have an old honda 60's side valve engine and iam really struggling to find out any way to adjust the valve clearance. it looks like this was never designed in...there are no screw threads to adjust....there are no shims or caps that you can alter to change the clearance....the spares book shows only the basic parts without alluring to any shims of varying thickness etc etc (this is the method used by honda in its later small sidevalves). the only potential method seems to be to grind the valve stem and or the end of the cam follower but this seems absurd.


    every other old sidevalve i have seen has a method of adjustment but not this little gem.

    any clues ??

    gerry
     
  2. picklesquirt

    picklesquirt Member

    Re: old sidevalve engine...is there really NO valve adjustme

    Hi Gerry,

    I'm sure I remember in the dark ages playing with a side valve engine, probably from an Austin seven, and yes you have to grind the valve stem to create the required clearance . If you grind the valve seat in you have to shorten the valve stem.

    Cheers
    Ewan
     
  3. highrange

    highrange Member

    Re: old sidevalve engine...is there really NO valve adjustme

    The earlier Ford sidevalve engines(pre 100E, and maybe before the models before, too - i can't remember) didn't have valve clearance adjusters either. The "handbook" recommended grinding the valve in a bit more to reduce the clearance, or grinding a bit off the stem to increase the clearance.
    This necessitated a couple of odd things, since the end of the valve stem was also mushroomed a bit to increase the bearing area:The valve-guide was split, and slightly tapered on the outside - fitting into a corresponding taper in the block; there was a special drift to loosen the valve guide; and there was a block with a hole (possibly homemade not a dealer part) to hold the valve squarely when grinding he stem end. I suspect this was all rather more trouble than it was worth, and Ford eventually adopted conventional screw adjusters.
     
  4. petternut

    petternut Administrator

    Re: old sidevalve engine...is there really NO valve adjustme

    The Wolf/B&D valve grinder I loaned to IF has a swinging jig that clamps a valve and allows the end of the stem to be ground.
    There is a micrometer adjustment.

    hth
    Roland
     
  5. highrange

    highrange Member

    Re: old sidevalve engine...is there really NO valve adjustme

    This was the Ford setup....

    [album]75[/album]
     

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