TheSamba.com :: View topic

Wed Feb 29, 2012 12:23 am

simple enough question. has anyone hit their carb inlet tube/carb with jb weld to prevent it from coming out? i have an h30/31 so it's sort of what i'm thinking of doing this to.
let me know!
thanks

Wed Feb 29, 2012 4:00 am

Do this or something like this.

I don’t think JB weld would hurt anything but I personally wouldn’t use it there.

Wed Feb 29, 2012 6:48 am

Yes: JB Weld and/or distorting the tube shape a tiny bit will help a bit. BUT ALSO SAFETY WIRE IT OR YOU"LL BE SORRY !!!

Wed Feb 29, 2012 7:08 am

Clean tube and carb body tube bore with scotchbrite extra fine...(cut a piece of scotch brite like a Qtip for the bore) coat tube with red loctite threadlocker,install and let loctite set up 12 hours or so before using,end of issue.

Wed Feb 29, 2012 9:34 am

what about running a tap down the hole, and installing a threaded hose barb with loctite? i was thinking this would be a good day-off project.... i DO NOT want my car to catch on fire.

Wed Feb 29, 2012 10:06 am

Use a 1/8 pipe tap and teflon tape approved for gasoline {the yellow tape not the white one}

I stand corrected, a 1/16 NPT X 1/4 hose barb fitting is the way to go.

Thanks mondshine, I was not aware that they made them that small.

Wed Feb 29, 2012 10:14 am

Thechief-
You are correct. a 1/16 NPT X 1/4 hose barb fitting is the way to go.

Use a brass barb fitting which is 1/16 NPT X 1/4. (1/8 NPT is too big for the carburetor top.)
They are a little hard to find at a hardware store, but a good source for fittings is:
http://fittingsandadapters.com/malpiptap.html
their stock # MPT-4-1 is a 1/16" NPT X 1/4" barb.

If you need a tap, here's a source for that:
http://www.amazon.com/National-Pipe-Taper-Speed-Steel/dp/B000U7LSPO

You won't need to drill the carburetor top to tap the hole; with the brass tube removed, the original drilling is just right.

Something to consider is that the safety wire setup shown in that photo does absolutely nothing to guarantee a seal between the brass tube and the carburetor top. Properly done, the threaded fitting will be a permanent fix.

Wed Feb 29, 2012 10:22 am

^^thanks. i have a kickass hardware store right next to where i work. they have everything i need. i had already pulled my stock brass pipe out, scuffed it and reinstalled it with red loctite and a safety wire, but i'm paranoid. i can't afford the weber carb setup i want right now, so i want to be sure i'm not going to lose my car. i just recently had to fix leaky injectors on my jeep a couple of weeks ago, and i had another jeep catch fire because of leaky injectors several years ago. i was able to put it out and get it fixed, but it looks like a bug fire gets way out of hand way fast. this VW is the only car i've ever had that i liked as much as a jeep. i am too attached to let it go out that way. :cry:

Wed Feb 29, 2012 11:36 am

JB weld works for fuel connection. For a while. Never know when it will "stop" working. Wet-Weld (I think that's the name) says it is OK for fuel applications. Neither is good to use on a carb inlet if you want to keep your car from burning to the ground.