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need vacuum source 120-130 1964

posted by  Alan122 on  Fri Sep 24 14:23 CST 2004
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last visit: Fri Sep 6 14:23 CST 2013
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I have installed a B20F engine with SUs on an early, aluminum intake manifold, in my '67 122 wagon. This intake manifold has no connection for vacuum which I need for the crankcase ventilation. Can I drill and tap a hole in the manifold? Has anyone else dealt with this problem?
All assistance is appreciated.
Alan








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    need vacuum source 120-130 1964

    posted by  someone claiming to be mjamgb on  Sat Sep 25 15:51 CST 2004 [RELATED]

    You can always route the breather to a catch can vented to atmoshpere (sans PCV valve).
    If there is a boss on the manifold you can drilland tap it for a barb fitting. If you do use the end-plugs than use both and a "Y" so as to not mess up two cylinder's mixture at the expense of the other two (and DO use a PCV valve!). The carbs also have a boss for a breather. IF you decide to use these (drill andtap for hose barb), then you do not need the PCV valve but it won't hurt anything to have it (also requires a "Y").

    Mike!








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    need vacuum source 120-130 1964

    uid 5098's pic
    posted by  Sil on  Fri Sep 24 14:38 CST 2004
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    last visit: Fri Oct 24 07:24 CST 2014
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    There should be a plug in the front face of the manifold that you can screw out and replace with a nipple. I suppose you could drill and tap a hole, but those castings are pretty thin, so there is not much there to get a thread into, but I've heard of it being done.
    Bob S.








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      need vacuum source 120-130 1964

      posted by  someone claiming to be swede4 on  Fri Sep 24 16:39 CST 2004 [RELATED]

      Should be no problem to drill and tap if nec. You will have enough threads.







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