...what do you think of as a safe "max' iat value?
That's a good question. In the thread I referenced above in Post #23, the forum member said his IAT temps were 100 degrees above ambient. That almost seems too hot...especially in warmer months. I would think the engine could be running dangerously lean if the incoming air temp is always something like 150 degrees. You would be running the risk of detonation (in which the ECU pulls timing and you lose power) or potentially overheating. Warm air is good...but I would be concerned about intake air temps well above 100 degrees in the summer.
Hey, Everybody.
In using the big burrito WAI from the other thread, I used 190 degrees F as an upper IAT limit in driving. The reason I picked 190 degrees was because the coolant thermostat opens at 195 degrees, so I thought that might be a safe temperature. I used an old bicycle brake cable to lift the end of the WAI about a half an inch off the exhaust manifold if the IAT got above 190 F.
Anybody here in Florida or California with a scanguage? Could you tell us what the IATs get up to when you are stopped in traffic or gridlocked on the highway in July? I suspect if you are at operating temp, idling in 100 degree F ambient temps, your engine breathes in some very hot air, especially when your radiator fan kicks on, at 220 degrees F.
I am excited to see where this conversation leads. Thumbs up, folks.
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View my fuel log 2014 Mirage DE 1.2 manual: 53.1 mpg (US) ... 22.6 km/L ... 4.4 L/100 km ... 63.8 mpg (Imp)