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Old 07-12-2008, 11:59 PM
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carb spacers

what is the point of carb spacers do they help or not just wondering what the benifit is thanks in advance

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Old 07-13-2008, 12:10 AM
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I have seen dyno tests that reported gains in using some carb spacers. Better atomization and flow. Some help insulate the carb from intake heat.
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Old 07-13-2008, 12:10 AM
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Quote:
Originally Posted by hdscooters
what is the point of carb spacers do they help or not just wondering what the benifit is thanks in advance
Some smooth the flow below the carb bottom.
Some increase plenum volume just by adding height.
Open spacers allow both sides of the manifold to pull from the whole carb, kind of like those dual plane intakes with part of the center divider cut out.

Carbs are too low to the manifold floor and make the mixture turn too sharp into the runners, causing gas to drop out of the air mix. Raising the carb often helps this.

Every situation is different. Spacers are a try and see proposition.
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Old 07-13-2008, 12:39 AM
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I had great results going from a 1" four hole spacer to a 1" open.
Check out this CarJunkieTV intake shootout.
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Old 07-13-2008, 08:10 AM
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one thing to remember if carb spacer is over 1" you gotta jet up 1 to 2 jet sizes higher.
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Old 07-13-2008, 08:18 AM
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Awesome malc, thanks for the link!
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Old 07-13-2008, 09:35 AM
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thanks

thanks for the links great explanation




steve
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Old 07-13-2008, 09:46 AM
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Carb spacers also increase intake charge velocity.

Vince
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