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Thread: 345 spark plug gap

  1. #1
    Join Date
    Apr 2009
    Location
    mississippi
    Posts
    137

    Default 345 spark plug gap

    The manual says to set the spark plug gap at .20 on 345 if I am reading it right....this doesn't sound quite right to me....any one set me straight?

  2. #2
    Join Date
    Mar 2009
    Location
    Las Vegas
    Posts
    208

    Default

    Setting the gap at .20 is a little big.
    Personally, I'd set the gap at .030 - .040
    '71 Basterd Scout 2
    with a 258 from a '73 CJ5
    Intake manifold with NHRA markings....go figure

    "Its (scout) four-wheel-drive capabilities are equal to anything this side of full tracks"

    David H. Petraeus for President 2012

  3. #3
    Join Date
    Apr 2009
    Location
    mississippi
    Posts
    137

    Default

    That's what I was thinking....wonder why the manual says that?

  4. #4

    Default

    .20 or .020? Often .020 was used with Propane fuel. For some reason .032 rings in my head as the recomended plug gap with a stock ignition. Anywhere between .032 and .040 should be fine.

    With .20 you better have some HD plug wires to handle that gap.

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