Carb suggestions???

SLM

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Hi I need a carburetor that can handle 11000rpm without problems and can sustain either 19 or 30 hp while doing it, preferably on the cheaper side
 

SLM

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dohc four cilinder 750cc
just curious though, why does the engine matter?
 

Sparkwizard

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I think a Holley 390 CFM 4 barrel might work, but I think your time would be better spent working on your imaginary project, rather than asking elementary questions on a go kart forum about a motorcycle engine that already had 4 perfect carbs on it.

The simple fact that you did not understand why I asked you to describe the engine proves that you are decades away from actually touching such a project.
Have a nice day.
 

SLM

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Simple math problem. Is it too difficult to ask uncle google for an equasion?
Yer askin to be spoon fed info, that if yer serious about makin yer imaginary project real, ya better learn!
i did, i asked chatgpt but theres just so many otions i just dont kw what fits and what would work you know?
 

SLM

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I think a Holley 390 CFM 4 barrel might work, but I think your time would be better spent working on your imaginary project, rather than asking elementary questions on a go kart forum about a motorcycle engine that already had 4 perfect carbs on it.

The simple fact that you did not understand why I asked you to describe the engine proves that you are decades away from actually touching such a project.
Have a nice day.

well if the bike actually had four carbs on it woudnt be asking this wouldnt i?🤡
and the reson im asking is because the engine is going ina go kart, i know that it is still a motorcycle engine but i kw ppl have put bike engines in karts so it still seemed reasonable to ask.
And YES i did ask google and chagpt and many other people, and i aslo Do need a lot to learn, thats why i ASKED and didnt just slap some carbs on, I guarantee yall im one of the youngest people on this forum if not the youngest, I def kw how to use the internet better than yall so if im here asking for answers it prob eans there isnt one elsewhere,
as for your holey carb, how on earth would a verticla draft carb fit on an INLINE four?? sure i guess it could with custom fab but since you already guessed its a motorcycle engine why dont you help me find one thats for a bike, not a car, or a V
as fpor your comment saying i dont understand anything about engines, Ill admit im not even close to knowing as much as yall (another reason why im ASKING here and not chatgpt who just gives you one that FITS, not one that WORKS) but if i said i need it to reach 11000rpm while providing enough fuel for 30hp per cilinder then it prob means that my engine CAN reach those speeds no?
 

Master Hack

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So the first order of biz would be to determine your emgines demand in CFM or CCM @ 11KRPM then you will know what what size you need. Then you can determine what type ya need.
 

Grizzlymi

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I would think that finding or building your own intake would the biggest setback for a project like this. Depending on your fab skills of coarse.
 

SLM

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idk the exact ccm but you could calculate it knowing the engine has a ve of percent, Id calculate it rn but im kinda busy, ill find it later and post it sidedraft, gravity fed
 

SLM

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I would think that finding or building your own intake would the biggest setback for a project like this. Depending on your fab skills of coarse.
not with 3d printing:cool:, which i keep recomending people to get into but everyone thinks its so out of their reach or skill:ROFLMAO::ROFLMAO:its literallyas easy as learning how the internet works
 

Sparkwizard

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Without pictures to prove you actually have such a project, we are wasting time on your hypothetical questions. If you actually have such a project, then you would be asking questions like how to convert from 4 carbs to one.

Show me the engine.

Seriously, if you want help, stop being an *** and actually show us that you have some idea about what you want us to help you with.
I wish some people could 3D print common hand tools and common sense,
390 CFM might be close if you need an off the shelf carb, but, honestly, I would think a genius like yourself could just print a manifold with a carb already installed. Then you could show us a better way to do it.
Have a nice day.
 
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Sparkwizard

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My simple and quick google search for your elementary school question came up with these answers, son.
750cc comes to about 45.77 CI, and at 70 % VE, 1100 RPM, that converts to 352,429 CFM, so my simple, offhand guess of 390 was pretty darn close, wasn't it? Hope that helps. Be sure you tell your teacher you had adult help.
 
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