1973 Super Beetle Convertible Carb Hose Connections Question

[quantumchaos]

Hello All,

I am rebuilding my first 1973 Super Beetle Convertible and an trying to verify all of the connections to the carb (see the attached photo):

Thanks
Matt

[Michael Ambrozik]

The hose on the left side of the carb goes to the vacuum can on the distributor. The other hose connections can be plugged.

[quantumchaos]

Thank you, what are the plugged holes normally used for?

[Cusser]

[vamram]

[quantumchaos]

[kpf]

The vacuum line just needs to go up a ways and then down so that any liquid gasoline will run back into the carburetor and not into the vacuum canister. You might be able to run it up through a clip on the air cleaner and then back down to the canister.
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1971 Super Beetle

[OTTO 1303]

If you don't have the metal "shepherds hook", but have a factory air filter box, route the left port vacuum up through the bottom half of the left side airbox clip, then down to the vacuum diaphram.
The vacuum line you have should fit nicely under the clip against the lower portion of airbox, then down to distributor, IF your line is long enough.

As stated by others, the two rear ports should be plugged.

There are several "schools of thought" on fuel filter placement. Research and then decide on final placement. If you would prefer a metal filter, research WIX 33031.

Nice color scheme and detail.

Is that a standard size crank pully and if so, where did you source the alternator belt?

Good Luck
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74 Super Sun Bug - OTTO
74 Super - DANZIG
74 Super - HERZOG

[quantumchaos]

Thanks, I understand now, this is all new to me, I bought this car and am completely rebuilding it blind lol, I have never even worked on any cars before so it's all new to me.


Yes this is a standard chrome crank pulley from Jbugs and the belt came from Amazon

Thanks Again
Matt

[vamram]

[ashman40]

First question... what model carb are you running? The vacuum advance port on the left of the carb operates differently depending on the carb model. The SVDA distributor you are running requires "ported vacuum" for vacuum advance. That means the SVDA will work with any Solex Pict -3 carb (30Pict-3, 34Pict-3 and 34Pict-4), but won't work with the Pict -1 carb vacuum advance port (28Pict-1, 30Pict-1, H30/31) as the left side vacuum port is venturi vacuum not ported vacuum.


Found a pic of a nearly original engine with vacuum hoses ('74 Beetle pictured):

You can see the "shepherds crook/hook" running up before it goes down to the vacuum port on the dual-vacuum distributor. This is the vacuum advance connection.

The green hose is the vacuum retard hose. Note that it also goes up, but runs thru the clip on the air cleaner housing before connecting to the (hidden) second vacuum port on the distributor.

There is a third hose connected to the rear facing port of the carb. Not sure where it goes. I believe that port was meant for autostick transmissions, but the pictured engine is not an autostick?

This pic may also help:

Any unused ports on the carb or intake need to be capped/plugged to prevent a vacuum leak.


If you plan to leave the fuel filter on the hose between the pump and carb, make sure you safety wire the hose to prevent the weight of the hose pulling the carb fuel inlet loose.

Or you can install a threaded fuel inlet into the carb top.

_________________
AshMan40
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'67 Beetle #1 {project car that never made it to the road }
'75 Beetle 1200LS (RHD Japan model) {junked due to frame rot}
'67 Beetle #2 {2019 project car - Wish me luck!}

[quantumchaos]

I am using the carb below, also, I am going to move the fuel filter to above the trans which seems safer and will catch as much debris as possible.

Also, do all SVDA distributor's had a hidden vacuum port in the back?

https://www.amazon.com/gp/product/B07V3KNV44

[tasb]

None of the SVDA's have a hidden vacuum port on the back of the canister. The single vacuum port is in plain view. A DVDA distributor has a vacuum port hiding on the front of the canister, away from direct viewing.
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Roads Scholar &
1957 Kombi low mileage 36 hp governor equipped M 178 Slow Drag Winner 2014, 2015, 2018

1965 hardtop Deluxe Microbus owned since 1990 M 620 factory 12 v 1500cc

1961 (October)Single Cab- Road Trip Workhorse

[quantumchaos]

OK, no idea what that is yet, but as long as my connections are solid I am happy:)

Thanks Again
Matt

[ashman40]

Borrowing a pic of a DVDA distributor from glutamodo:

The "DV" stands for dual-vacuum. You can see above two vacuum ports on the canister. Note that one is for vacuum retard while the other is for vacuum advance.
The "SV" on SVDA means single-vacuum. It only has the vacuum advance port.

The "DA" in DVDA and SVDA stand for dual-advance. Both types of distributors have a vacuum advance and a mechanical (centrifugal) advance. The DVDA distributor has an additional vacuum retard system that functions at idle.


Your carb and distributor should be a matching pair. Not all model carbs came with vacuum ports needed for every type of distributor. And as pointed out above, not all vacuum advance ports on the carbs are the same. Your 34Pict-3 carb left side vacuum advance port should work fine with the SVDA distributor you have.
_________________
AshMan40
---------------------------
'67 Beetle #1 {project car that never made it to the road }
'75 Beetle 1200LS (RHD Japan model) {junked due to frame rot}
'67 Beetle #2 {2019 project car - Wish me luck!}

[Tim Donahoe]

Be sure to use rubber caps to plug off those unused male fittings. The plastic ones—although they come in pretty colors—crack in no time, and you’ll have a vacuum leak. Not good. Get rubber.

Also, you can make a shepherds crook, using brake line.

Tim
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Let's do the Time Warp again!

Richard O'Brien

[quantumchaos]

Thanks all for the help