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Thread: 787 carbs on 657.
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06-30-2019, 11:04 PM #1
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787 carbs on 657.
Anyone ever done this? Have a set of 787 carbs and thinking the bigger carb should flow more and fuel without any modifications. Going on a 94 spx for tr the girlfriend.
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06-30-2019, 11:27 PM #2
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how will a bigger carb flow more fuel on a naturally aspirated engine?
The venturi effect will be reduced and you'll actually run dangerously lean
they won't be a bolt on to a 717 engine anyhow
don't believe everything you read on the other forums
you'd get a more noticeable improvement putting fresh coat of wax on the skis bottom and making sure the pump is in tip top shape
Welcome aboard GH!
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06-30-2019, 11:31 PM #3
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- Jun 2019
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I'm a new okd member. I'm relating to the 91 650sx I had and made huge improvements going with a bigger carb.
Also a slightly rough hull will create air bubbles on the bottom and run faster than a waxed hull.
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