Sight tube barb

btye1

Cadet
Joined
May 10, 2010
Messages
15
Can anyone tell me what size the sight tube barb is on a quadrajet, i need to buy and new one and my boat is an hour away.

I think the barb side is 3/16, but i'm not sure about the threaded size.
 

btye1

Cadet
Joined
May 10, 2010
Messages
15
Re: Sight tube barb

okay, after going and looking at the hose barbs at my local Ace hardware, I am thinking that the barbed side is not 3/16 as I originally thought...the threaded side is MUCH too large....any help here?
 

Don S

Honorary Moderator Emeritus
Joined
Aug 31, 2004
Messages
62,321
Re: Sight tube barb

You have to tell them what size threaded end you want. A 3/16" barb could have 1/8, 1/4, or maybe even 3/8" pipe thread on the threaded end.
Maybe you need to find a different store.
 

btye1

Cadet
Joined
May 10, 2010
Messages
15
Re: Sight tube barb

oh I found a 3/16 barb by 1/8 npt thread, but the thread was MUCH larger diameter than the barb, the one on my carb it looks like the barb is the same size as the thread diameter
 
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