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cwatts
Samba Member
Joined: June 15, 2010
Posts: 45
Location: Piambong NSW Australia
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 Posted: Sat Mar 12, 2011 6:24 pm Post subject: What is this part? |
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Hi
I have a 1972 KG convertible - I'm stumped as to what this part is for... not connected to anything at the moment. In the engine bay, connected to the rear wall to the left of the left hand side hinge.. trying to attach photo - the cable is not associated with it (just runs underneath). Any thoughts?
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ovghiaguy
Samba Member
Joined: November 07, 2009
Posts: 848
Location: Orangevale Ca.
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| Posted: Sat Mar 12, 2011 7:05 pm Post subject: what is this part. |
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| one tube goes to intake manifold left side, othe tube goes to carb. not sure which port. I believe it is an altitude compensator but don't quote me. Don't think too many use it. (people ) |
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cwatts
Samba Member
Joined: June 15, 2010
Posts: 45
Location: Piambong NSW Australia
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| Posted: Sat Mar 12, 2011 7:35 pm Post subject: |
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| OK thanks mate - any idea how it works? |
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ovghiaguy
Samba Member
Joined: November 07, 2009
Posts: 848
Location: Orangevale Ca.
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| Posted: Sat Mar 12, 2011 7:58 pm Post subject: |
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| cwatts wrote: |
| OK thanks mate - any idea how it works? |
no idea how it works. I believe there is a vacuum pot that mounts to back of carb that is part of it. vacuum acts on diaphram which moves a lever connected to accelerator lever. I took it off mine years ago. Maybe some of the more knowledgeable will chime in. go to my pics, there is a picture of it.https://www.thesamba.com/vw/gallery/pix/784450.jpg |
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70 140
Samba Member
Joined: September 22, 2002
Posts: 8471
Location: Ontario Canada
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| Posted: Sat Mar 12, 2011 8:45 pm Post subject: |
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Altitude adjuster. It was part of the emissions system. There is a flathead screw on the one end of it. You adjusted it with that...
Unless you are running the entire set-up with the idle controller, it is pointless. I find that the mount its attached to is a good spot to mount the rear defrost relay. |
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danielsan
Samba Member
Joined: September 18, 2008
Posts: 802
Location: Carson City, NV
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| Posted: Sun Mar 13, 2011 10:59 am Post subject: |
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70 140 is right that it is worthless without the corresponding part that mounts onto the front of the carb -- and 9 out of 10 don't work.
If you have both parts and a 34 pict 3 it is worth using -- it helps to get rid of some of the 34 pict's flaws, especially in stop and start traffic. Even if you have a good SVDA the 34 pict isn't great off of idle. The throttle positioner / Altitude adjuster keeps the idle high for a few moments after you stop the car so you can get going quickly without stomping on the gas.
Results in smoother starts from stop signs and better performance in bumper to bumper traffic. The dash pot does the same thing. |
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danielsan
Samba Member
Joined: September 18, 2008
Posts: 802
Location: Carson City, NV
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| Posted: Sun Mar 13, 2011 11:00 am Post subject: |
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| Oh, and, if you restore the system the bentley has the adjustment procedure. |
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