Vacuume line fitting at Firewall - faces which way?
 

Hello A Gang; More trivia; There is a vacuume fitting at the firewall that is seen in this archive picture that Marco and probably others have often posted, I have blown it up and circled the fitting in red.This picture shows the nut facing the motor side, but the JS does not say which way it should face , if any.
I have two examples, on one the nut faces the motor, and on one the nut faces the interior of the car. Both ways work equally well, and this very basic part has almost no reason to ever need removal , at least that I can see.
So my question is, was this fitting installed randomly either direction at the factory, or have others seen it always facing one way? Thanks a lot! Kev.

Re: Vacuume line fitting at Firewall - faces which way?
 

Went thru this issue a while back, and felt like the brass fitting was attached to the vacuum line and tightened prior to installation. That way, to attach the outer nut the person on the outside would turn the wrench and the person holding the fitting on the inside would not have to pivot/turn a wrench, only hold it in position.

Re: Vacuume line fitting at Firewall - faces which way?
 

Thanks a lot Will, that would make sense, wouldn't it! I am sure they learned real quick on the assembly line the quickest/ easiest way to do each task.
I have at least one person telling me privately that he has seen backwards too though; so perhaps some workers did it differently.Thanks again,Kev

Re: Vacuume line fitting at Firewall - faces which way?
 

i checked 4 cars that i have
the one im postitive hasnt been altered has the big nut on the inside
(im the 2nd owner)its a mid 1930 tudor
two have the big nut on the outside,and had original paint under them
the 4th has the big nut on the outside ,but i had removed it years ago
never paid attention to which way it went back on