Direct to head throttle bodies - butterfly position
Direct to head throttle bodies - butterfly position
(OP)
When having throttle plate just at the head entry(lets say 1 inch away) is it better to have it positioned vertically instead of horizontally?
As the throttle will cut the flow in upped and lower part if horizontally, where if positioned vertically it cuts flow on left and right part, just like the valves are positioned.
What's Your oppinion?
Cheers
Ziga
As the throttle will cut the flow in upped and lower part if horizontally, where if positioned vertically it cuts flow on left and right part, just like the valves are positioned.
What's Your oppinion?
Cheers
Ziga





RE: Direct to head throttle bodies - butterfly position
At part throttle it will favour one valve over the other and therefore might introduce a bit of swirl and shear between the air streams which just might improve combustion speed and thermodynamic efficiency. Notice I say MIGHT not will.
Testing on a flow bench will give a better idea of probable outcome.
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RE: Direct to head throttle bodies - butterfly position
Cheers
Ziga
RE: Direct to head throttle bodies - butterfly position
Operational convenience is probably a more important factor. Also it would depend on where the injector sits. My guess would be that this, and more, is why most OEM setups are sideways.