Carburetors for a 1956 1600N?

SplitPersonality · Posted: Tue Aug 04, 2015 3:01 pm Post subject: Carburetors for a 1956 1600N?

What type are the correct single-draft carburetors for a 1956 1600N engine?

roy mawbey · Posted: Wed Aug 05, 2015 4:18 am Post subject:

As far as I am aware the normal 60hp engined early 356T1 ( 1956 ) used a Solex single barrel 32 PBIC carb. The super engined version a 40 PBIC.

Solex had a range of carbs used on early 356 till the T2 and the twin barrel Zenith 32NDIX.

Roy
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Roy
RHD356A super75 106954

janerick3 · Posted: Wed Aug 05, 2015 6:53 am Post subject:

Original Solex 1600N carbs from 1956 are marked "32 PBIC"
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James Davies · Posted: Wed Aug 05, 2015 8:34 am Post subject:

A slight correction: the '56 Supers used to the 40 PICB carbs, which were slightly different from the earlier 40 PBIC. This change was in 1954 on the 1500 Super engines, and they continued to use those carbs on the 1600 Super engines. The PICB had an autostart circuit which the PBIC did not.

EverettB · Posted: Wed Aug 05, 2015 8:47 am Post subject:

roy mawbey · Posted: Wed Aug 05, 2015 9:39 am Post subject:

Everett,

I was confused too by that starting feature. I found this link:

http://qunswer.com/5lzx/difference-between-su-and-solex-carburetor.html

In it advises the Solex PBIC was the carb used on early 356A's and deleted in 1955. They say it operated with a starter jet.

To me and I could be wrong of course it means this carb has an accelerator pump that can be used to deliver a squirt of fuel down the induction by pressing the accelerator like the Zenith 32NDIX has.

Sure someone will confirm that point one way or the other.

Roy
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Roy
RHD356A super75 106954

James Davies · Posted: Thu Aug 06, 2015 9:19 am Post subject:

I don't know exactly how the autostart circuit works, but it's the upside-down triangle thing on the side in this photo:

https://www.thesamba.com/vw/classifieds/pix/2520067.jpg

And it has a diaphragm valve in it that opens up a circuit.

As you can see the choke is blocked off with a plate. Otherwise these carbs are very similar to the 40 PBIC. Both have normal accelerator pumps, just like the 32 PBI and 32 PBIC.

James Davies · Posted: Thu Aug 06, 2015 9:47 am Post subject:

Also, this diagram shows the autostart of the 40 PICB, items 121 through 123. This diagram actually shows parts for both 40 PBIC and 40 PICB.

http://www.356carburetorrescue.com/images/40PICB.jpg

EverettB · Posted: Thu Aug 06, 2015 11:12 pm Post subject:

Interesting. I will assume it functions like an electric choke somehow for now.
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roy mawbey · Posted: Mon Aug 10, 2015 6:59 am Post subject:

Everett,

Looked in my factory workshop 356A manual. In the Solex info it shows the air and fuel starter jets. Then in the writing alongside it advises these starter jets are not used because the carb has an accelerator pump to assist starting.

So you are I guess correct in your thoughts.

It was discontinued on the later versions.

Roy
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Roy
RHD356A super75 106954


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