Re: what size throttle body for adequate air flow?
Posted: Sat Jan 07, 2017 10:35 pm
Why not just match the diameter/area of the intake ports?
Intake ports on my engine are 36mm diameter, I don't see the point in putting 40 or 42 mm itb's, where the flow will be choked off by the port....??
If I put on 36mm itb's, maybe 37 or 38's to allow for restriction of butterfly and throttle shaft (and carefully taper where the two meet), won't that allow for best flow velocity, regardless of engine displacement?
What happens to flow if you use itb's that are smaller than the ports?
Intake ports on my engine are 36mm diameter, I don't see the point in putting 40 or 42 mm itb's, where the flow will be choked off by the port....??
If I put on 36mm itb's, maybe 37 or 38's to allow for restriction of butterfly and throttle shaft (and carefully taper where the two meet), won't that allow for best flow velocity, regardless of engine displacement?
What happens to flow if you use itb's that are smaller than the ports?