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Old 06-15-2021, 01:21 PM   #1
chromaglow's Avatar
Join Date: Jan 2021
Location: Edmonds, WA
Posts: 42
Year: 2003
Coachwork: Bluebird
Chassis: All American RE Flat Nose
Engine: Cummins 8.3 260 Allison MD3060
Rated Cap: Just 1 right now
Exclamation Moving Air Cleaner from Cabin

I need to move my Air cleaner out of the back of my RE 2003 Bluebird.

I have done most of the thinking and planning for how to do it but before I go for it I was hoping to talk with someone else who has done it or has knowledge of doing this. I want to make sure I don't mess this up or miss key considerations. Anyone have photos or a video of how they did it? How did it work out? Anything to make it easier? Must consider etc...


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Old 06-16-2021, 12:21 AM   #2
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Join Date: Aug 2019
Location: Auburn, WA
Posts: 785
Year: 2000
Coachwork: IC / Amtran
Chassis: 3000 / 33' Flat Nose
Engine: IC T444E / Allison MT643
Rated Cap: 72 Kids / 48 Adults
Really simplistically, I think as long as the air cleaner has access to the appropriate amount of air, and isn't located too far from it's original placement, then moving it in general would be fine.

My completely non-engineering based concern with how far you place the air cleaner from the engine is thinking air flow, currents, etc., reducing the amount of air available.

The thing I'm noticing about the OEM placement is the height of the air cleaner. I'm assuming this is to avoid as much crud kicked up from the road. More crud, less air, more frequent air cleaner changes, etc..

I'm wondering if you can determine the amount of air flow that the air cleaner needs to allow through and use a different shaped air filter that will allow you to keep the air filter intake where it is, but use a larger, flatter air filter. This way, you could greatly reduce the space taken up by the (assuming) cylindrical air filter chamber.

Just thinking outside of the box.
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Old 06-16-2021, 08:09 AM   #3
Bus Crazy
Join Date: Nov 2011
Location: Sault Ste. Marie, Ontario
Posts: 1,794
Year: 1997
Coachwork: Thomas
Chassis: B3800 Short bus
Engine: T444E
Rated Cap: 36
Another benefit to pulling the air from higher up is that the air will be cooler than down by the asphalt. Take that into consideration when relocating the breather. Higher is better!
My build page: Armageddon - The Smell of Airborne Rust
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Old 06-16-2021, 08:22 AM   #4
Bus Crazy
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Join Date: Jun 2015
Location: Wisconsin
Posts: 1,259
Year: 2001
Coachwork: Bluebird
Chassis: All American
Engine: 8.3 Cummins ISC
Rated Cap: 75
I built around that in my RE. If you aren't doing the master bed across the cabin you should just leave it there.

There's a reason why the engineers put the air cleaner up there. Any lower and it's going to be constantly clogged with dirt and water. Good way to ruin an engine.
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Old 04-18-2023, 10:45 AM   #5
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Join Date: Jun 2019
Location: Phoenix, Arizona
Posts: 4
Year: 2001
Engine: 8.3l Cummins
Relocation of air filter

We are in the process of doing that right now.
I am modifying the filter can with snaps to replace the element. The air will duct outwards and upwards with a snorkle.
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