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6 cyl Bristol cars Type 400 to 406 - restoration, repair, maintenance etc |
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![]() Geoff:
I had 34 ICH carbs on one of my Arnolt Bristols. I can't find a record of the size of the venturis so the jet sizes that I ran doesn't mean much. However they were 140 Main, 240 AC & 60 Idle. They worked well for racing, but I can't vouch for them for street use. I looked at a chart on: www.webernorthamerica.com/34_ICH_weber_carb.html - and saw that it listed 29mm venturis with a range of 130 to 165 Mains depending on whether the Aux. venturi was 4.5 or 3.5. I suggest that you take a look there. Bill |