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thread size

Discussion in 'Forced Induction' started by DelSlo, Oct 20, 2005.

  1. DelSlo

    DelSlo Senior Member

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    does anyone know what the thread size is for hte oil pressure sensor on the back of a b series block, is it 1/4 or 3/8 " its not metric right??

    just looking to bid on a t fitting that says its 1/4".

    im gonna use common sense and geuss the thread is a really fine pitch too right??


    also anybody ever use those golden eagle vacuum manifolds with the 6 ports on them?? it sounds to be helpful but didnt know if anybody could give any feedback on how well they operate or if they are accurate to mani. vacuum. :)
     
  2. pissedoffsol

    pissedoffsol RETIRED

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    block is 1/8" BSPT.

    DO NOT try to use an NPT fitting on it, or you'll fubar you're block. you need a bspt to npt adapater.

    http://www.mcmaster.com/
    part# 4092K81
    Precision Threaded Type 316 SS Pipe Fitting 1/8" NPT Male X 1/8" BSPT Male Hex Nipple, 9100 PSI
    In stock at $4.44 Each

    i used the vac manifold....didn't have too many problems with it. just a pain in the ass to set up.
     
  3. DelSlo

    DelSlo Senior Member

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    thanx B, yeah i think i might give it a shot, its only like 30 bucks on ebay and if keeps everything organized then its a good investement.

    ok thats mad cheap for hte adapter. noob question for ya, i know PT stands for pipe thread, but what does the "N" and "BS" stand for, just out of curiosity!

    thanx again!
     
  4. GSRCRXsi

    GSRCRXsi Super Moderator Moderator VIP

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    NPT = National Pipe Tapered
    NPS = National Pipe Straight

    BSPT = British Standard Pipe Tapered
     
  5. DelSlo

    DelSlo Senior Member

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