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  1. #1

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    951 case tap for extra pulse line

    I need to add an extra pulse line...

    What size do I drill and should I just plug the rave solinoid case tape with a rubber cap or pound it out and plug it?

    I plan on adding the pulse line under the MAG reed intake....

    Do those fittings just fit in with pressure, or some sort of sealant?


  2. #2
    2Blue's BFF! dsolie's Avatar
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    1/4" Npt..

  3. #3

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    Did you mean 1/8th " npt???

  4. #4
    Ziggy's Avatar
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    I'd go 1/8-27. The drill size for this is R (.339"). The drill for 1/4-18 is 7/16 (.4375) I would think the flow path of 1/8 NPT would give you enough signal w/o such a large hole.

  5. #5

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    I was thinking Dan made a typo.... 1/8th seems more like it. Dan????

  6. #6
    2Blue's BFF! dsolie's Avatar
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    Si', Si'... I am always saying things are bigger than they really are..

    PS - AHEM.. Still waiting for my kodak moment here Matt..

  7. #7
    Master of the Dooniverse
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    1/8 NPT is the way to go. I don't think the cases are thick enough to support enough 14 NPT threads.

    Matt, when you tap the hole, only run the NPT tap in so far then check the fit. you only want it to penetrate so far.....goo too far and the fitting won't be snug without hitting the crank weights.....or you'll need ot trim/grind the fitting. do it once and do it right. tapered threads are fun!

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