TheSamba.com :: View topic - Comparing stock Solex carbs to each other, and to the H30/31

Wed Jun 29, 2022 6:22 am

Moperkont wrote: Alright, I went through the bulk of this post but figured I would just ask in case I missed it.

I have a 1200cc 40HP with a Solex 28 and an Empi 009 installed by PO. I have had some running issues with it.

I found a VW 113-905-205M (Bosch ZV/PAU 4R3) distributor with the vacuum canister that I purchased. All the info I found said a 4R1-4R6 would work. Does that seem correct.

The other thing I am considering is a rebuilt Solex 30/31 or a Brosol H30/31.

Does it seem like I’m on the right track?

Do you mean a 111905205M? The 113 version was used on the later 1500 engine.

The 113 is more a spot on match for a Brosol H30/31 (DVG never made a 30/31 carburetor, by the way. Those are all dregs from the aftermarket)

The 111 was a 40HP distributor matched to the 28PICT-1.

Thu Jun 30, 2022 5:47 pm

glutamodo wrote: Moperkont wrote: Alright, I went through the bulk of this post but figured I would just ask in case I missed it.

I have a 1200cc 40HP with a Solex 28 and an Empi 009 installed by PO. I have had some running issues with it.

I found a VW 113-905-205M (Bosch ZV/PAU 4R3) distributor with the vacuum canister that I purchased. All the info I found said a 4R1-4R6 would work. Does that seem correct.

The other thing I am considering is a rebuilt Solex 30/31 or a Brosol H30/31.

Does it seem like I’m on the right track?

Do you mean a 111905205M? The 113 version was used on the later 1500 engine.

The 113 is more a spot on match for a Brosol H30/31 (DVG never made a 30/31 carburetor, by the way. Those are all dregs from the aftermarket)

The 111 was a 40HP distributor matched to the 28PICT-1.

Here is a photo of the carb I purchased as well as the info that I used to determine it was the proper distributor to use with either a Solex 28, 30 or a Brosol h30/31.

Fri Jul 01, 2022 5:38 am

My charts are more accurate.

https://www.thesamba.com/vw/archives/info/glutamodo/temp/CarbBaseFlangeNumbersA.doc

https://www.thesamba.com/vw/archives/manuals/bosch_tune_up_parts.php

Fri Jul 01, 2022 11:50 am

glutamodo wrote: My charts are more accurate.

https://www.thesamba.com/vw/archives/info/glutamodo/temp/CarbBaseFlangeNumbersA.doc

https://www.thesamba.com/vw/archives/manuals/bosch_tune_up_parts.php

Thanks. I’ve saved those charts.
I guess I will see how this 113 works with my Solex 28 for now. Can’t be worse then my Empi 009 right now hopefully. Haha

I have already been considering going the route of a Solex 30 or Brosol h30/31 anyways. Would you recommend the h30/31 then if I run that 113 distributor?

Sun Jul 03, 2022 11:50 am

Yes, this very thread really started all those years ago to answer the question as to which distributor, if any, was ideal for the H30/31PICT and the answer was more or less the 113905205M or 113905205T. Although most of the vacuum-only distributors from the mid 60s to 1970 are going to work with it.

Tue Jan 16, 2024 11:15 pm

Andy,
I'm trying to troubleshoot a friend's car which is fitted with a 30Pict3 carb (VW226_1). The distributor was advance immediately when connected back after setting timing (which was done hose plugged). I suspected throttle plate was not set properly so tried to do that and was a bit alarmed that for the screw on throttle arm to touch the lowest step required it to be screwed in nearly all the way - made me think that throttle plate was not returning to the correct position.

On removing the carb and inspecting, I noticed this:

Even with the plate fully "closed" the lower of the 2 advance drillings remains exposed. My understanding is that the lower one should be closed when the plate is closed and just exposed when the throttle is cracked open. In this case, it is always open.

One thing that could cause it is if the throttle plate was replaced with an incorrect one at some point. Any thing else that could cause this?

Tue Jan 16, 2024 11:39 pm

Uh, I'd be more worried about where the two throttle plate screws went...

Is this an optical illusion or are they AWOL?

-Frank

Wed Jan 17, 2024 12:08 am

Frank Bassman wrote: Uh, I'd be more worried about where the two throttle plate screws went...

Is this an optical illusion or are they AWOL?

-Frank

Why? No illusion. It should be pretty obvious that the likely reason was I had removed the screws while trying to understand what was going on. That pic was after I had removed the screws (which are visible - though blurred - in the second pic) to remove the plate and see what was up and then tried to get it back to close as flat as it could.