Carb vacuum take offs

Hello

Got my carb all set up nice, but I've got two vacuum pipes coming out the side, one just by the bypass screw and one one the throat/manifold.

I know one would be if i had a vacuum advance distributor (which i hope to reinstate one day), what is the other one for ?

They both have a small length of pipe with a screw in the end, is there anything better/neater out there to block theses off as sometimes the screw falls out and it stalls and i don't really want to just shove another screw in a pipe

Can you join the two together

Cheers

 

manifold goes tp air cleaner box, other one goes to vac can on dizzy or block it off if no vac....short length of vac pipe with a stainless socket head bolt is the best way to plug the take offs...don't join the two together....your carb will get very confused

 

as van says best way , just make sure your tube is a ok n not perished . the screws shouldnt come out .

 

I think mine were looped together at one stage! Didn't seem to make much difference!

 

No don't loop them together, it's std procedure to block them up with a piece of pipe and a screw.

 

Like zed says, don't loop them. I think when I brought my bus, the pipes were looped and caused some problems.

 

Righto guys, thanks, ill get some better pipe and screws then till I get a new dizzy

Wasn't sure if there was a propper bung you could get

I was just about to loop it if I hadn't had of had those replies, close one!