Engine Air Temp
#1
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Engine Air Temp
Measured with a scanner the inlet air temp while running. Around 113 degrees inlet. Ambient temp was 80. This was twin 575sci. Is 30 degree difference normal for boat?
#3
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I don't think the 575 runs an intercooler, right? I would say your numbers are normal. I run a 3.3 whipple with IC and my intake temps are low 90's. If I lean on it, I may see 100. Thats with 65 ish water temp (lake)
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I'm not in the same class as most with OSO - we have a stock 7.4 mpi (2000)- but I know this for fact the cooler I can without doubt that the cooler I keep the air in the engine compartment the better speed I can get. WOT at 60 F I easily hit 63 mph (GPS) However, when this summer the air temps in the high 90's and warmer water- I was hard pressed to get into the high 50's. Now I'm not a performance boat owner - 226 Cobalt. But I wish there was some cheap easy way to "Really" lower the temps going into the air intake -- too bad dry ice is CO2-- a chunk in engine area for sure would cool the air!!
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#5
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The IAT sensor is in the flame arrestor in the 575, so it's basically going to be reading the incoming ( to the throttle body)air temp.
Before I built my fresh air system, I measured engine compartment air temperature with a digital thermometer and a probe and it was 20-30* more than ambient air.
2 of these things are emanating 140-150* worth of heat in a confined space.
Before I built my fresh air system, I measured engine compartment air temperature with a digital thermometer and a probe and it was 20-30* more than ambient air.
2 of these things are emanating 140-150* worth of heat in a confined space.
#7
jaay teee got any pics of the fresh air system you made?
#10
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I don't have many pics, but Eddie took a few when he listed it
http://m.powerboatlistings.com/photographs/44770
http://m.powerboatlistings.com/photographs/44770