TheSamba.com :: View topic - Shepherds hook

Wed Jun 02, 2021 5:09 am

All-

Do most use a shepherds hook steel vacuum line to their carburetor? Are they needed?

If so, I saw the video on how to make, but do any vw vendors sell them?

Thanks
-Mark

Wed Jun 02, 2021 6:12 am

It's nothing fancy. You can simply loop the hose higher than the vacuum port or make one out of metal tubing.

Wed Jun 02, 2021 6:53 am

Gotcha.... thanks

Wed Jun 02, 2021 7:26 pm

Needed if one wants the vacuum advance not to fill with gasoline. Rubber diaphragm does not do well in the long term by being soaked with fuel.

Sat Jun 05, 2021 8:28 pm

From the 1960's the diaphragm is actually made of a speaker cone like paper- even more vulnerable.

I would say most do not know about them, yes they are needed, I've had NOS in the past and good used off and on and yes there are vendors that have them.

Sat Jun 05, 2021 8:36 pm

There was an evolution to the line and not always in the shape of a shepherds crook.

Sat Jun 05, 2021 8:41 pm

71 up with the push pull cans didn’t use them.

Sun Jun 06, 2021 8:44 pm

From my experience the advance line was still a "shepherds crook" but the retard side was not.

Mon Jun 07, 2021 7:16 am

tasb wrote: From my experience the advance line was still a "shepherds crook" but the retard side was not.

You know more than I, so I double checked looking at old brochures and you are correct, they used them even on the ones with the advance port located at 7 o’clock.
Guess what I am going to be doing this morning…

Mon Jun 07, 2021 7:27 am

What size metal line is common? Can a normal brake line work? 3/8"

Mon Jun 07, 2021 8:10 am

markeaton wrote: What size metal line is common? Can a normal brake line work? 3/8"

2mm which is about .080" (80/1,000 of an inch).

3/8" is .375" (375/1,000 of an inch)

Mon Jun 07, 2021 8:12 am

Thanks..... to be clear, you are saying 2mm is the correct size and not the 3/8"

Mon Jun 07, 2021 9:20 am

markeaton wrote: Thanks..... to be clear, you are saying 2mm is the correct size and not the 3/8"

Exactly.

Tue Jun 08, 2021 1:33 pm

VW ones have nipples like this on the ends:

You will see aftermarket ones where they just trim a piece of tube off.