Brake booster vacuum hose when converting to a Weber?

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • bls72bmw
    Low Range
    • Feb 2015
    • 41

    Brake booster vacuum hose when converting to a Weber?

    Gents, throwing a Weber on tonight and can't figure how to route the brake booster vacuum line......
    There's a new short extension piece that goes from the manifold to the flexible hose, but when the Weber goes on it wown't fit.

    I think there's a simple solution I'm missing....!
    ADDING:
    1973 LHD NAS Series 3 88"

    THXClick image for larger version

Name:	IMG_4994.jpg
Views:	1
Size:	99.0 KB
ID:	174294
  • MJL
    Low Range
    • Oct 2007
    • 82

    #2
    [QUOTE=bls72bmw;109897]Gents, throwing a Weber on tonight and can't figure how to route the brake booster vacuum line......
    There's a new short extension piece that goes from the manifold to the flexible hose, but when the Weber goes on it wown't fit.

    I think there's a simple solution I'm missing....!
    ADDING:
    1973 LHD NAS Series 3 88"

    From the picture it looks like the piece that screws into the manifold to which the brake booster extension attaches is taller than the part on my 72 Series 3. Yours has another vacuum hose attached to that piece - what does it supply vacuum to? With a shorter piece between the manifold and the extension you should have the necessary clearance.

    Comment

    • bls72bmw
      Low Range
      • Feb 2015
      • 41

      #3
      MJL, thanks, very true- there is a short piece of vacuum that goes back onto itself; so it is not necessary.

      SO I'll call RN tomorrow and see if there's a delete kit or a way to get rid of that piece. Good call.

      Comment

      • o2batsea
        Overdrive
        • Oct 2006
        • 1199

        #4
        Looks like someone put a thing in there to add vacuum ports. I think you can just delete the thing with the blocked off ports and then put the pipe adapter back in the manifold.

        Comment

        • bls72bmw
          Low Range
          • Feb 2015
          • 41

          #5
          Had a nice chat with some Rover folks, the suggestion is that the oddball vacuum ports were for NA emissions. The gizmo wown't fit in the manifold, so it has to be machined down since the bolt is no longer available!

          Comment

          • o2batsea
            Overdrive
            • Oct 2006
            • 1199

            #6
            Loosen, rotate slightly, bend pipe downward, done. Nothing special there...it's 3/8 pipe with a flare fitting.

            Comment

            • MJL
              Low Range
              • Oct 2007
              • 82

              #7
              The LR part number for the adapter without the vacuum ports , which presumably is shorter, is 90513171 and the copper O ring number is 243958

              For some reason the price of the adapter is ridiculous. RN lists it as RNC739 at $46.76. I tried a few UK sites and it averaged around 24 pounds. But even at the low value of the pound by the time you add shipped charges (and perhaps any tariff charges &#128553 it wouldn't be any cheaper.

              Did RN say they couldn't get the part?

              Comment

              • bls72bmw
                Low Range
                • Feb 2015
                • 41

                #8
                OK, so from above advice I took off the oddball part and then had to clean up and chase the threads deep down into the manifold. It finally DID fit into the manifold far enough (so thanks to above replies).

                I'm still having hard problems starting, I think it's the coil. I'll start a thread elsewhere.
                But I am please how easy the Weber was to drop in.
                Thanks Team!

                Comment

                • yoc
                  Low Range
                  • Mar 2007
                  • 26

                  #9
                  I think your missing #RNB659 and the small hose should connect to distributor vacuum advance of course it needs to be longer then block off the other port

                  Comment

                  Working...