Air Filter Vacuum Pipes

[Tan]

Hi All

I own an American specification 1974 Series 3.

I am trying to re- fit the air filter vacuum pipes that go between the Air Filter temperature sensor (within the filter itself) and the vacuum system, but cannot see where the vacuum connection on the inlet manifold is?

The photos attached show where I think the Left Hand Side air filter connection pipe is (Back of the L.H.S inlet manifold above the brake servo vacuum connection)
But the Right Hand Side has a blanking plug fitted on the FRONT of the inlet manifold!

Does anybody know the part number for the pipe connection so I can replace the blanking plug with a pipe connection as per the Right Hand Side?
I cannot see the part in any of the parts catalogue.

Or am I entirely incorrect in my assumption as to where the pipe belongs?

Thanks...................Mark

[lowact]

There are small vacuum off-takes on each quarter of the intake manifold, i.e.:

The vacuum to the temperature "sensors" is from two of these.

See also post #14 of this topic
viewtopic.php?f=6&t=16939#p139824

[Tan]

Ahh thank you so much.
Can you tell me what the pipe connection shown in my photos on the left hand intake manifold is for?

Thanks again……Mark

[Bob.]

Hi Mark
Is or was you car an auto? If so the LR manifold upper connection goes to the vac unit at the lower LH rear of the gearbox.