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Author Topic: Twin Carb jet sizes  (Read 2714 times)
ownfc59
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« on: November 21, 2010, 06:11:55 PM »
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I've just fitted twin strombergs to a stock 138 grey motor with 45 main jets as recommended in other posts but still running extremely rich.  Seems smaller jet sizes required.  Has anyone else had similar problems & how did they overcome them.
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Pete
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ACE
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« Reply #1 on: November 21, 2010, 08:24:04 PM »
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G'day Pete,
What power valves are you running?
ACE  Cool
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ownfc59
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« Reply #2 on: November 22, 2010, 03:43:52 PM »
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According to my "technical consultant" he reckons 71's.
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colt
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« Reply #3 on: November 22, 2010, 04:14:19 PM »
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Even though I have triples, I cant think of my main jet sizes, make sure all your jets and power valves are the same size. I had to use FX power valves and idle tubes as these are smaller. With a stock motor you may have to use throat restrictors. I had to use these even though my motor is a little bit warm.

Colin.
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colt
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