Monday, November 14, 2022

Monday Mystery, tappet wrench

 

As it says, it's a tappet wrench and its spreading jaw measures 14.6 mm, so was probably 9/16" when it was new. But for what engine, I wonder?

7 comments:

  1. About halfway down the page, Essex Super Six...

    https://ozwrenches.com/vintage.htm

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  2. ... and I woke up this morning wondering "How can a 1920s side valve engine
    have eccentric valve clearance adjustment ?"

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  3. Well, the eccentric wrench doesn't actually say 'tappet'. So then, what's it for? Now *I'm* going to be up all night.

    rdguy

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  4. Service info online says the eccentric wrench is used for adjusting timing chain tension.

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  5. rdguy's right, eccentric could be anything.
    Now, making delusional connections as I did is called apophenia,
    and *that's* worrying.

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  6. I'd define apophenia as "thinking outside the box" :-)
    An ebay listing included the wrench as for an Essex or Ford. Interesting that on the 8N Ford tractor (of twenty years later), valve adjustment was done by grinding the end of the valve down.

    Ozwrenches is another interesting resource, thanks!

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  7. Timing chain tension seems right - I'd just about talked myself into thinking kingpin adjustment.

    "Apophenia". Come for the the cool old mechanical stuff, stay for the language trivia!

    rdguy

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