Is the vacuum port for the autostick in the same location on the solex 30 pict-3 as the 34 pict?
Thanks
Glenn
Hiya Glenn,
Yes, it is. However you will find that dedicated port ONLY on a 30PICT3 that was manufactured for use on an AutoStick. Obviously, most 30PICT3s were made to fit on a manual. And today, after 37 years, the manual version of the 30PICT3 is much more likely to be the carburetor you have in your hands.
In later model carburetors VW distinguished those for an AutoStick with a different flange number than those for a manual. Unfortunately, in 1970 they didn't stamp flange numbers into either type carb. The only thing that will set the auto version apart from the manual (besides the presence of that extra vacuum port) is that it will NOT have the all the apparatus for a throttle positioner. Problem is that, in a great many cases, the throttle positioner stuff has been removed.
Here's what to do.....................take a look at the carb from the rear. As it would sit on the manifold and you'd be looking in the engine compartment. You should see three vacuum ports if this is an AS carb, two if it's manual. One port should come up from the base at an angle, and one port at midbody on the left should pointing straight at you. The AS port will also be at midbody just to the right of the port previously mentioned. Probably (if you have a manual version) you'll simply have an undrilled boss there instead.
Take a look and let us know. If you do have a manual 30PICT3 it's pretty easy to turn it into an AS version with a little drilling. We can give you instructions for that.
Hiya Glenn,
By the way, if a picture of mine (it's a manual) would help, let me know. I can snap a couple today.
I know it a manual, but I figured it would be a easy change. I was just making sure I was thinking along the right path. The hole is there but it is not drilled throw. I'm assuming you would just drill it out and insert a brass tube for the hose. Do you know how thick the wall is? Would the drill hole be smaller than tube outside diameter but bigger than the inside diameter?
Thanks,
Glenn
Hiya Glenn,
Of course, the non-drilled hole is metric but it is pretty close to a 9/64. That hole is now deep enough (about 3/8 of an inch) to seat the brass vacuum nipple without any further drilling. However, if you want, you could drill that 9/64 a little deeper. Whichever way you go, I'd suggest drilling the rest of the way through to the venturi with a 3/32. That will allow plenty of vacuum flow (no impedence) for the brass nipple with the restrictor opening. When you have the hole drilled through be sure to use a file and clean up the new opening in the venturi.
Thanks for information.
Glenn