let me ask the question in a way that makes more sense
"how do i reduce the volumetric efficiency of an engine within a certain powerband"
assuming the bore/stroke is already selected the following things affect volumetric efficiency in specific ranges (without affecting it across the board like a restrictor plate)
- camshaft profile (huge effect)
- ignition timing (medium effect)
- scavenging from exhaust configuration (small effect)
- intake runner length (small effect)
so yeah by that logic you probably want a different cam to achieve this goal that i don't agree with
the cooling effect is small and needs to be proportioned against ignition timing to avoid knock. it's really hard to blow up an n/a engine even under heavy load unless you go really lean.How safe is to block the acceleration enrichment since less fuel means less cooling effect through evaporation of the fuel?
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