Quote:
Originally Posted by [ion] C2
Then it hit me to do some quick math to see if the 58mm bore is actually large enough, since the 9.8mm diameter rod that holds the throttle plate takes up some cross sectional area as well.
62mm throttle body effective area 24.14 sq cm
58mm adapter area 26.42 sq cm
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Wouldn't it still be a good idea to match the bore, at least with a chamfer in the adapter plate? Sure, total cross-section is fine, and their individual flow rates will be similar, but it seems like that lip would cause some turbulence.