Single Stromberg to SU B20A

mentepazza · Nov 12th, 2023, 09:22

Hi Folks,

I am looking to alternatives to the Stromberg 175 which I found very difficult to adjust. After being with an “expert” the carb is a mess and I need to completely rebuild it. The only good bit left is the core.
Over the last 2 Years I have never been happy with it. Maybe time to replace it?
I read here the only straight swap is the SU HS-6.
I understand the SU is easier to work with and more reliable? I also remember I have read the SU was the Carb used in 140 Taxi?

142 Guy · Nov 12th, 2023, 16:00

There are Weber downdraft conversion kits

http://redlineweber.com/carb-kits/auto/volvo/

A little more complicated if you have a one piece intake and exhaust manifold.

Burdekin · Nov 13th, 2023, 07:14

The Stromberg works the same as the SU and is one of the simplest carbs and easy to adjust and tune. Your easiest and best route is to rebuild the carb. What model Stromberg have you got? Post up some pics. I'd fit a Stromberg 175cd2se, really nice carb. But you need to fit the jet conversion so you can adjust the fuel mixture; https://www.southerncarbs.co.uk/onli...rsion-Kit.html

grumpydad · Nov 13th, 2023, 22:53

Hi
get any SU hs6 Ebay ?
go to https://sucarb.co.uk/
get a new needle and jet job done

mentepazza · Nov 16th, 2023, 15:15

Thanks folks, I have now jumped on a offer to get a NOS SU, which I have taken immediately.
What do I need to fit it now? do I need a backplate?

Nov 12th, 2023, 09:22	#1
mentepazza Member Last Online: Apr 21st, 2024 21:10 Join Date: Feb 2016 Location: Glasgow	Single Stromberg to SU B20A Hi Folks, I am looking to alternatives to the Stromberg 175 which I found very difficult to adjust. After being with an “expert” the carb is a mess and I need to completely rebuild it. The only good bit left is the core. Over the last 2 Years I have never been happy with it. Maybe time to replace it? I read here the only straight swap is the SU HS-6. I understand the SU is easier to work with and more reliable? I also remember I have read the SU was the Carb used in 140 Taxi?

Nov 13th, 2023, 07:14	#3
Burdekin Chief Bodger Last Online: Today 05:59 Join Date: Oct 2009 Location: Aberdeen	The Stromberg works the same as the SU and is one of the simplest carbs and easy to adjust and tune. Your easiest and best route is to rebuild the carb. What model Stromberg have you got? Post up some pics. I'd fit a Stromberg 175cd2se, really nice carb. But you need to fit the jet conversion so you can adjust the fuel mixture; https://www.southerncarbs.co.uk/onli...rsion-Kit.html __________________ One day I will get rid of all of the rust.

Nov 12th, 2023, 16:00	#2
142 Guy Master Member Last Online: Yesterday 16:07 Join Date: Jul 2020 Location: Saskatchewan, Canada	There are Weber downdraft conversion kits http://redlineweber.com/carb-kits/auto/volvo/ A little more complicated if you have a one piece intake and exhaust manifold.

Nov 13th, 2023, 22:53	#4
grumpydad Senior Member Last Online: Today 08:14 Join Date: Dec 2015 Location: eastsussex	Hi get any SU hs6 Ebay ? go to https://sucarb.co.uk/ get a new needle and jet job done

Nov 16th, 2023, 15:15	#5
mentepazza Member Last Online: Apr 21st, 2024 21:10 Join Date: Feb 2016 Location: Glasgow	Thanks folks, I have now jumped on a offer to get a NOS SU, which I have taken immediately. What do I need to fit it now? do I need a backplate?

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