4g64 freeze plug size

Posted by lauj2gdsm, Mar 6, 2013
Cylinder Head & Short Block - 4G63 cams, valvetrain, pistons, rods, stroker kits, 6-bolt swaps, hybrids, etc. Read this Forum's Strict Guidelines.

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  1. lauj2gdsm

    lauj2gdsm Proven Member

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    do any one know what size freeze plugs are use to plug extra holes in a galant 4g64 sohc block?
     
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  2. 19Eclipse90

    19Eclipse90 DSM Wiseman

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    OKC, Oklahoma
    Most of the core plugs are 35mm. There are a couple that are 40mm. Defiant would have a heart attack with this thread title.
     
    Last edited: Mar 9, 2013
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  3. tkrPerformance

    tkrPerformance Proven Member

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    5 extra holes on the top of the block, sizes are one-1/2", two-5/8" and two-11/16
     
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  4. lauj2gdsm

    lauj2gdsm Proven Member

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    5/8 and 1/2 plug will hand fit but once i knock it down it just fall all the way through. my other ones a 18.26mm they fit fine.. whats the metric spec for 1/2 and 5/8?
     
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  5. BogusSVO

    BogusSVO Proven Member

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    Pensacola, Florida
    1/2 - 13mm 5/8 is appox 16 mm
     
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