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Old 06-18-2016, 08:05 PM   #1
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Intercooler Installation

Hello All;
I'm looking at my next step which is installing a Intercooler on my 8.3 Cummins that's installed in my Crown Pusher. One thought I have is building a scoop out of Fiberglass that starts at the roof with a intake that's about 8 inches high & say 3 ft wide that tapers down to about 2ft wide at the bottom, the scoop could run down the back of the bus & stop just above the cooling vents for the eng compartment. My thought process here is ,Positive Air Pressure scooped up at top of bus & as it narrows increases pressure in front of Intercooler but negative air pressure at exit of scoop because it would be down in vacuum area behind bus would pull air thru.

option 2; Mount a box or cooler inside eng compartment install Intercooler inside then when traveling fill box/cooler with water & a couple slabs of dry ice.
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Old 06-19-2016, 01:08 PM   #2
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I like the scoop idea but think you would want a temperature controlled actuated damper at the opening's for the winter time.
Or just a way to cover it when not needed?
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Old 06-19-2016, 05:59 PM   #3
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I like the scoop idea but think you would want a temperature controlled actuated damper at the opening's for the winter time.
Or just a way to cover it when not needed?
Ok I under stand the reason for a cover, if I make the scoop there would be a screen to prevent debris but confused about closing it for winter driving? Wouldn't colder the air the better??
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Old 06-19-2016, 07:11 PM   #4
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Maybe more for the concern that it would get too cold, moisture freezes inside until it constricts the airflow entirely which suffocates your intake... Or maybe you're thinking about a separate intake?
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Old 06-19-2016, 07:16 PM   #5
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Maybe more for the concern that it would get too cold, moisture freezes inside until it constricts the airflow entirely which suffocates your intake... Or maybe you're thinking about a separate intake?
Could air thru the turbo get cold enough to freeze any moister as it flows thru the Intercooler?:confuse d:
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Old 06-19-2016, 07:57 PM   #6
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No idea, I was just pondering
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Old 06-19-2016, 08:20 PM   #7
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A scoop would run the risk of having the air flow interrupted by anything mounted on the roof. Things like A/C units or even stack vents.

What would work a lot better would be a snorkel that could go up through the interior and out the roof or along the side and up. The snorkel would only need a opening about 12"x12" to be more than adequate.

There were some Crown high decks with 8V-71's that had the snorkel up the side in the back. They looked rather odd but the buses were owned and operated as crew buses for mine. The buses ran on many miles of unpaved roads and the snorkels allowed for fresh air out of the dust that was kicked up by the bus going down the road.
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Old 06-19-2016, 08:46 PM   #8
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The whole idea of an intercooler is to lower the temp of the incoming air to the cylinders. The lower the better. Low temp air is denser and will provide more oxy for combustion. THAT...is what an intercooler is for.
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Old 06-19-2016, 09:07 PM   #9
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Originally Posted by cowlitzcoach View Post
A scoop would run the risk of having the air flow interrupted by anything mounted on the roof. Things like A/C units or even stack vents.

What would work a lot better would be a snorkel that could go up through the interior and out the roof or along the side and up. The snorkel would only need a opening about 12"x12" to be more than adequate.

There were some Crown high decks with 8V-71's that had the snorkel up the side in the back. They looked rather odd but the buses were owned and operated as crew buses for mine. The buses ran on many miles of unpaved roads and the snorkels allowed for fresh air out of the dust that was kicked up by the bus going down the road.
I already have that for my intake & exhaust, I'm working on installing a Intercooler
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Old 06-19-2016, 09:09 PM   #10
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Originally Posted by Tango View Post
The whole idea of an intercooler is to lower the temp of the incoming air to the cylinders. The lower the better. Low temp air is denser and will provide more oxy for combustion. THAT...is what an intercooler is for.
So what do you think of the idea of a Intercooler Immersed in water & ice for traveling days??
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