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2x4 vaccuum lines 2x4 vaccuum lines
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Kirkham Motorsports

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Old 02-21-2004, 05:09 PM
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Default 2x4 vaccuum lines
Each of my carbs appears to have 2 vaccuum line fittings on the side (total of 4).

Do I just connect these carb to carb?
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Old 02-21-2004, 05:52 PM
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I dont think you have to connect them. I think you just cap them off...any pictures Joe?
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Old 02-21-2004, 06:17 PM
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I have seen 1 & 3 connected but what about 2 & 4?
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Old 02-21-2004, 06:44 PM
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Connect the two vacuum pot tops (secondaries) together and cap the other two.
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Old 02-21-2004, 08:00 PM
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Connect 1 and 3 cap 2 and 4 thats the way mine is, and she runs perfect.
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Old 02-21-2004, 08:00 PM
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I concur w/ ST. Connect the the top two and plug the others. But I have guys that had both of them plugged and their set up seemed to work just fine.

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Old 02-21-2004, 08:48 PM
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awesome guys ... thanks.
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Old 02-21-2004, 08:59 PM
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ports 1 and 3 should be connected for balanced vacuum between the two secondary diaphrams, ports 2 and 4 are for your timed spark distributor vacuum advance, if you run mechanical advance just plug them like the other guy's mentioned.

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Old 02-21-2004, 09:17 PM
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Thanks Tony...I feel even better now that I know what they are used for. I hate to do stuff when I don't fully understand the issue. Thanks again.
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