This is fine in cold weather 29C, this is very bad ; hot air sucked in will [i] overheat engine to > ideal ( e.g. 80C coolant tmprtre for a BMW, 78C for a honda ), [ii] make air thin ( with less oxygen ) & so slow combustion ( oxidation of fuel ) which then can't complete before exhaust valves open & so make exhaust very loud [iii] produce very low torque ; if air intake is already hot, then this air can't expand much when heated. What amazes me is none of the 20+ men ( esp the engine specialists ) on this show knows these facts. Are all american carburetors' air intake casings like this ? My Nissan Sunny 120Y 's casing was like this, but my Mitsubishi 4G15P 's casing ( if filter's centre hole gets a rubber gasket added ) sucks air only from outside engine compartment
- posted
13 years ago