which throttle body will flow more?

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which throttle body will flow more?

Postby type85 » Thu Jan 26, 2017 10:46 pm

Single throat with 66mm bore?
Or progressive with 34mm primary and 52mm secondary?
How do you calculate surface area? pi x radius squared?

So the area of the 66mm bore is: 3,419sq mm?

34mm primar:y 907sq mm
52mm secondary: 2122sq mm
total: 3029sq mm

I assumed the combination of the two smaller bores would have more area than the single 66mm bore, but the math says otherwise!

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Re: which throttle body will flow more?

Postby ChrisAudi80 » Thu Jan 26, 2017 11:06 pm

Looks like you answered your question.
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Re: which throttle body will flow more?

Postby Noisy Cricket » Sat Jan 28, 2017 10:04 am

I'd say the single, the double looks like its angle of approach is WAY too wide. IIRC you don't ever want more than 7 degrees on an inlet or outlet or the flow gets really turbulent.
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