Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Which thread types can be used together

  1. Aug 22, 2011 #1
    Hi, I am looking to adapt a car intake manifold.
    There are 4 injector holes (untapped) that measure a touch over 18.5mm.
    I plan to tap these holes and fit some reducing nipples to them.
    I have a 7/8" BSW tap bit and some M20x2.5 ISO tap bits.

    I need some help on the following;
    Will the 7/8" bsw be too large for this hole?
    if not, what other threads would work with the 7/8 bsw?

    If I use the M20x2.5 bit instead, what other male threads would work with it?

    The reason I'm asking this is because these are the only bits I have but I am struggling to find nipples or reducers that fit with either the 7/8" bsw or the M20x2.5 bit.


  2. jcsd
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?
Draft saved Draft deleted