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Thread: Fittings and thread standards?

  1. #1

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    Question Fittings and thread standards?

    Can anyone confirm the holes in our engines are BSPT/ JIS? I want to mount some gauges. and I KNOW it is not U.S. NPT... but I do not have BSP taps (yet)to confirm what I think is the answer. Thanks!! Grumppa
    If you build a better "idiot-proof" item, someone will build a better idiot.

  2. #2


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    Metric See Haynes Manual in 216 manuals thread

  3. #3



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    x2 metric - go to napa and get a metric to npt adaptor fitting kit
    Pennyman1
    The best Dodge that Dodge never made
    Living the D-50 lifestyle since 1980

  4. #4

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    Thanks for the info, all. I guess I will have to go face-to-face with my NAPA guy 'cause looking on-line I could not come up with any adapter kits. This Guy is good though; if NAPA has it, he knows it! Works out OK... they are having a battery sale right now and I think my bike battery is getting tired. Thanks, again!!

    Edit: September 2013. BSPT; British Standard Pipe Thread. Different number of threads from US pipe thread AND the thread pitch and angle are both different. Per Pennyman1; NAPA has the adapters... supposedly $20 for a set of two, but when mine came in there was only one in the package. Brass.
    Last edited by Grumppa; 04-03-2014 at 03:38 PM. Reason: Add info.
    If you build a better "idiot-proof" item, someone will build a better idiot.

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