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Mon Feb 27, 2017 12:24 am

Looking for some enlightenment from my learned friends out there. I have two carbys on my trike which I believe has come from a type 3. Motor is a type 3 pancake as well.
Can someone plz tell me what these numbers mean?
H32/34 2 & 3
Venturi. 32/34/24.
They are solex Brosol carbys. I have googled, not much luck there.

Thanks in advance

Mon Feb 27, 2017 8:22 pm

muzza wrote: Looking for some enlightenment from my learned friends out there. I have two carbys on my trike which I believe has come from a type 3. Motor is a type 3 pancake as well.
Can someone plz tell me what these numbers mean?
H32/34 2 & 3
Venturi. 32/34/24.
They are solex Brosol carbys. I have googled, not much luck there.

Thanks in advance

Info for Type3 Carb's with build date FROM August 1966.

32-34 PDSIT - 2 Left Carby
32-34 PDSIT - 3 Right Carby

Venturi - Left & Right 24mm dia

Other info:
Main Jet -
Left Carby X130
Right Carby X127.5

Air Correction Jet -
Left Carby 155
Right Carby 120

Pilot Jet with cut off valve -
Both left & right 50

Float needle valve -
Both left & right 1.2mm dia

Float Weight -
Both left & right 7.3 grams

Pump Capacity -
Both left & right 0.35 - 0.55 cc/stroke

Information sourced from my Australian Publication - Gregory's No.47 VW Type 3 1500-1600 Service & Repair Manual..

Mon Feb 27, 2017 8:25 pm

Thankyou KahunaKombi 😀

Mon Feb 27, 2017 11:05 pm

Interesting difference left to right. I've neve seen these specs but it makes perfect sense why no one seems to be able to jet single duals...

Wed Mar 01, 2017 12:37 pm

Or even dual, duals. The trend for the mass majority is that each carb throat MUST have the same jets as the other ones. However, there are so many variables in an engine / carbs that can lead to different jetting for each throat. I have ran into many situations where one throat required different jets then the other ones. That's why I am not a big fan of AF meters. They work great if your engine has a single plenum intake system. However INMHO, to get the jetting right on a multiple throat setup, you need to have an independent sensor for each cylinder.

Wed Mar 01, 2017 1:29 pm

good point and I agree

I mentioned this elsewhere, and the feedback was related to the original air cleaner flow on the left, further from the cool air intake

Wed Mar 01, 2017 1:55 pm

Erik G wrote:

I mentioned this elsewhere, and the feedback was related to the original air cleaner flow on the left, further from the cool air intake

I could see where that could make a difference. If the air temp was different enough between the two carbs, then there would be a difference in oxygen levels as well. So the carb with the higher oxygen content, may be detuned a little so the engine would be balanced bank to bank.

Of course my theory may be just dust in the wind :D .

Wed Mar 01, 2017 2:03 pm

so apparently if your air cleaner is skinny on the right, as pictured, you run equal jets. If yours is fat on the right (dotted line) you run the different jetting

here http://www.thesamba.com/vw/forum/viewtopic.php?t=540804