1974 stock vacuum advance

[apba12m]

I have a stock carb and want to know where on the carb to put the vacuum line from the distributor?

[NOVA Airhead]

[guppysoup]

[livy]

I know exactly where you are coming from. I know everyone says to put it on the left side of the carb. BUT on my stock 73 the engine will not run smoothly connected there. I put mine on the carb tube coming out toward you (as you are looking at the engine) and it seems to pull better going up hills and runs smoother at idle. I know it is wrong but it works on mine. I've tried it many times and each time it will not good connected anywhere but there. Go figure

[apba12m]

This leaves me in a quandary guess I will try hooking up a vacuum gage. wish the service manual had a picture....

[NOVA Airhead]

[nikita]

Maybe its California only that has a double-sided vacuum advance and retard unit with two hoses. IF that is the case, one is connected to the left side (venturi) and the other is fed from manifold vacuum. If the unit in question has two fittings, that might be the source of confusion.

[SilverThing]

Things (US 181) were supplied from the factory with one of two distributors. 1973 Things have 113 905 205AN and 1974 have 043 905 205C. Both are dual vacuum dual advance distributors and have the same timing characteristics. The 74 unit just carries an updated part number. Other markets had different distributors depending on a variety of factors such model year, factory options (M63 for example), engine, and carburetor.
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"I like how everyone likes talking about Zeke's Thing yet he's the only one that's ever seen it." - Katie
"I've seen pictures..." - Jeremy

[citroen]

ok this is a stock 74 engine this thing has only 7000 miles on it and the lines are the same ones that came from the factoy and have been changed

[[email protected]]

Never seen a 181 with A/C! Can you post a pic of the evap unit?

[citroen]

ok it is a 74 and it also has fresh air, gas heater, and ac.

[nikita]

Where is the condenser? Does it use electric fans?

I have a somewhat related question. With the H30/31 replacement carb and Mexi-Bosch 043 905 205 ZB distributor, which vacuum port (of many) has the correct signal? Thanks.

[citroen]

in front of the axle beam with small fans

[citroen]

if it looks like this i would use the front tube with the red cap for the rear on the dist the large tube and the small one on the side for the small one on the dist.

[Wildthings]

The proper carburetor nipple for the vacuum advance will have ported vacuum, no vacuum when the throttle is closed, but manifold vacuum as soon as the throttle is opened a bit. Yes an engine may run smoother at idle when the advance can is hooked straight to manifold vacuum. If you lug your engine a lot like running very slowly over ruts and such then using straight manifold vacuum to the advance can may improve performance a bit. Normally the retard can should be hooked up to straight manifold vacuum, but this assumes that the retard still holds vacuum, if it leaks then remove the hose from the carburator and plug the fitting on the carb.

A carburetor set up for use with a vacuum retard distributor may not idle down correctly and may sputter off idle if the retard can is not used or is not serviceable. There are simple fixes for this.

[nikita]

I found this terrific study of late VW carbs and vacuum advance.

http://www.thesamba.com/vw/forum/viewtopic.php?t=185095

[sharkskinman]

citroen
I So want that A/C compressor mount!!!

Have you ever thought about having that mount recreated
Because you can mount it in the same place and instead of using it as air conditioner you can actually use it as an air compressor being that it does not get its lubrication from the freon
That means you could have air ride as well as if you had at least a 2 or 3 gallon tank hidden somewhere you could run air tools off of it
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74 Mexi Swamp Thing. 70 square volksrod (Swamp Rat)..65 C10

[[email protected]]

Yes i have an extra mount....
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Michael Basso
http://www.thingparts.com
New and Used VW Thing Parts Free advice
CALL 518 630 0173

[CRM114]

Glad you posted a picture and since it’s basically never been messed with it adds more credibility. I have read and seen many contradictions and it’s frustrating to ask a simple question and get replies that are totally wrong to screwy and dangerous advice.

[CRM114]

Glad you posted a picture and since it’s basically never been messed with it adds more credibility. I have read and seen many contradictions and it’s frustrating to ask a simple question and get replies that are totally wrong to screwy and dangerous advice.[/list]