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Motorcycle carbs on rotaries?

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Old 02-01-2005, 02:25 PM
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Question Motorcycle carbs on rotaries?

Anyone know anything about equipping rotary engines with Bike carbs? I see that there are a buttload of 4AG's in Japan with motorcycle carbs on them (to avoid washout during extreme G's) but I can't much information on a conversion of this type.

More specifically:
Would I use one carb or two?
What am I looking for in a bike carb?
What would be a good jet size?
Is there a good/best way to adapt the manifold?

Thanks for any help on the subject!
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Last edited by mranlet; 02-04-2005 at 07:42 PM.
Old 02-03-2005, 01:02 PM
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1)
This is not a bike forum.
2) this is not a Toyota forum (4ag)
3)

People has used webbers/mukinis/ and other 1 barrel style carbs.. is this what you mean?
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Old 02-03-2005, 06:33 PM
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1) this is not a bike question
2) this is not a toyota question
3) if you do not have any constructive advice, leave the posts to people who do.
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Old 02-04-2005, 08:01 PM
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Originally posted by Rotary7
People has used webbers/mukinis/ and other 1 barrel style carbs.. is this what you mean?
This is kind of what I mean, but most mukinis and webbers aren't bike carbs, as in that they don't really offer the washout prevention that is seen in some motorcycle-derived FCRs (the Webber float isn't really total protection, just a gadget that helps fight it).

I'm talking about carbs that come on Jap bikes that are really really good against richness changes at G.

Also, would one 2-throttle carb provide sufficient flow for a thirsty rotary?

Thanks!
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Old 02-05-2005, 05:58 PM
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mike, i dont think there's many people at your level.
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Old 02-07-2005, 06:44 AM
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Is that an insult or a compliment?
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Old 02-07-2005, 01:18 PM
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to give you some sort of idea on carburetor size, for a 13b you would use a 600 cfm holley. so if you could see what type of bike carbs are close to the equivalent of that amount of air flow then you should be good.
Old 02-08-2005, 07:00 AM
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Originally Posted by mranlet
Is that an insult or a compliment?
both
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