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You'd do us and yourself a favor if you'd give us a little more

info. Do you have a carb manifold on the engine? Does it currently

have a carb? Which one? What problem are you having?

Most carbureted Volvos use two carbs. I'm using SU HS6 carbs

on my 122 and SU HIF6 carbs on my 164.

Currently there's a zenith 175 cd and I was thinking about weber ...anything else?

Thanks

I don't know where you are or what you can get but I took the

Zenith Stromberg 175-CD2s off my 164 and threw them away in

about 1983. I replaced them first with SU HS6 carbs and then

with SU HIF6, which bolt right up and seem to be working very

well.

The Z-S carbs work well when they are brand new but are near-impossible

to adjust and the diaphragms, temp compensators and bypass valves tend

to become maintenance nightmares. While also requiring adjustment,

the SUs are a lot easier and don't have diaphragms. I reduced my carb

maintenance about 85% on my 164 when I changed to SUs. No difference

in performance.