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Author Topic: Breather on bus  (Read 2902 times)
Bob Gil
Bob Gilbreath bobgil@sbcglobal.net
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« on: February 24, 2008, 02:28:34 PM »

Ok I have been looking at the pictures I took of the bus and posted a while back.

 I noticed that there is nothing on top of the intake in the line of an air filter. 

I am use to big trucks that have ducted breathers but I don't see where some thing like that would work here. 

Can some one here tell what they have on their dietriots from filter on the intake?

Bob in Cowtown
bobgil@flash.net
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Fort Worth, Texas where GOD is so close you don't even need a phone!

1968 GM Bus of unknown model 6V53 engine (aftermarket) converted with house hold items.

Had small engine fire and had no 12 volt system at time of purchase. 
Coach is all 110 w 14KW diesel genrator
Dallas
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« Reply #1 on: February 24, 2008, 03:00:52 PM »

Someone stole it!  Wink
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Bob Gil
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« Reply #2 on: February 24, 2008, 03:03:05 PM »

I am afraid so but I got to find out what it was before I can find one to replace it.

Not sure what I am looking for yet.
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Fort Worth, Texas where GOD is so close you don't even need a phone!

1968 GM Bus of unknown model 6V53 engine (aftermarket) converted with house hold items.

Had small engine fire and had no 12 volt system at time of purchase. 
Coach is all 110 w 14KW diesel genrator
Dallas
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« Reply #3 on: February 24, 2008, 03:13:03 PM »

if it's like many of the 71 series engines, it's a rubber tube that goes to the air cleaners.


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gus
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« Reply #4 on: February 24, 2008, 03:26:38 PM »

If it is like a 4104 with 671 the air enters high upon

 both sides through small gills, goes through three oil bath air cleaners into a large rubber bellows shaped tube into the air box.

It appears to be an 871 so I'm not that familiar with that setup.

It would really help if all posters included their bus model in their signatures.
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PD4107-152
PD4104-1274
Ash Flat, AR
Bob Gil
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« Reply #5 on: February 24, 2008, 03:34:53 PM »

I think it is a 6V53 or that is what I have beeb told.

I will check the valvue covers next time I am down there.

Not sure of the model number still trying to figure that one out too.
« Last Edit: February 24, 2008, 03:38:23 PM by Bob Gil » Logged

Fort Worth, Texas where GOD is so close you don't even need a phone!

1968 GM Bus of unknown model 6V53 engine (aftermarket) converted with house hold items.

Had small engine fire and had no 12 volt system at time of purchase. 
Coach is all 110 w 14KW diesel genrator
tekebird
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« Reply #6 on: February 24, 2008, 04:08:42 PM »

looks like  53 to me

does it still have the oil bath filters or where they stolen too
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Bob Gil
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« Reply #7 on: February 24, 2008, 04:49:01 PM »

I don't see any thing.

I am not sure what I would be looking for.

I was wondering is the space on left side about the same height as the tail light the intake where the intake could be or is that a breather for the inside of the coach?
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Fort Worth, Texas where GOD is so close you don't even need a phone!

1968 GM Bus of unknown model 6V53 engine (aftermarket) converted with house hold items.

Had small engine fire and had no 12 volt system at time of purchase. 
Coach is all 110 w 14KW diesel genrator
Stan
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« Reply #8 on: February 24, 2008, 05:08:17 PM »

Bob: I have a lot of trouble with your terminology. The combustion air for your engine goes into the blower on top of the engine. Notice the funnel shaped piece with the rubber flex hose connected to the top of it. I can't see the top end of the hose but it should connect to the air cleaners.

You refer to valve covers and breathers and that is a different thing. If you are talking about the breather that vents the crankcase, there should be a vent pipe coming off one valve cover going down the side of the engine toward the ground.
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Bob Gil
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« Reply #9 on: February 24, 2008, 05:23:56 PM »

My engine does not have a blower.

I don't think it does anyway.  I am a MACK man not sure about Detroit's.

Blow is a picture of the top of my engine with arrow pointing to the opening i think should be where it takes in the combustion aid for the engine.  I see where there was something mounted on it but I don't see where a breather filter was mounted. 

Other than this opening i don't see where the engine could get it's air.  I don't see and rubber big enough to carry the amount of air it would need to run.


My engine is not mounted like the one that Dallas posted the picture was taken from the side.  When you open the back door you see the front of the engine with the exhaust on both side of the bus and the trany going straight farward.

Bob
« Last Edit: February 24, 2008, 05:26:57 PM by Bob Gil » Logged

Fort Worth, Texas where GOD is so close you don't even need a phone!

1968 GM Bus of unknown model 6V53 engine (aftermarket) converted with house hold items.

Had small engine fire and had no 12 volt system at time of purchase. 
Coach is all 110 w 14KW diesel genrator
Dallas
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« Reply #10 on: February 24, 2008, 05:36:58 PM »

If it doesn't have a blower, it's not a 2 cycle Detroit engine.

2 cycle Detroit's won't run without a blower because they do not intake air naturally.

We really need some more information, engine number, infromation off the valve cover decals, etc.

I've also been trying to decode the 13 digit VIN that you posted on another thread and can't find anything in my books to compare it to. All VIN numbers after 1980 are 17 digits and contain quite a bit of information, pre1980 Vins don't contain as much information, but still follow certain formulae... this one doesn't seem to.
Some really good photos of the engine, both close up and at about 5-6' would be good too.

Dallas
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Bob Gil
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« Reply #11 on: February 24, 2008, 05:40:09 PM »

Maybe it does have a blower.  I am not much on Detirots.


I am more filmure with turbos on macks and cummins.

The opening might be the top of a blower I am not sure.  I hope to get to over and get some more pictures this week.  I have to go over and get the finaly payment made any way.
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Fort Worth, Texas where GOD is so close you don't even need a phone!

1968 GM Bus of unknown model 6V53 engine (aftermarket) converted with house hold items.

Had small engine fire and had no 12 volt system at time of purchase. 
Coach is all 110 w 14KW diesel genrator
tekebird
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« Reply #12 on: February 24, 2008, 05:52:11 PM »

you need to send more photos......or the roof of the engine compartment.  the intake grill on the corner of the bus is the combustion air intake.

being that ther eis little fire damage in the engine comaprtment I am guessing that the fire was in the intake side and may have been removed.
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skipn
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« Reply #13 on: February 24, 2008, 08:29:59 PM »


 Just as a thought.........It may not be a DD but maybe a international
 natural asperated............

  Just a thought by what doesn't look like standard DD to me, Altenator is belt driven
 also if that helps.

 FFWIW
 Skip
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TomC
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« Reply #14 on: February 24, 2008, 09:15:26 PM »

From what I can tell from that picture is that the engine is a Detroit 6V-53N.  And yes that looks like the intake pipe to the blower.  In its' current configuration, it must be extremely loud-mainly the whistling from the blower probably is very loud-typical to the straight cut 2 lobe blowers they used (because of space) on the 53 series.  On some of the 53 series (and I'm guessing maybe also on your) they used an air cleaner that looked like a large version of a car air cleaner mounted on top of the intake tube-this is why you can't find a separate air cleaner can. Finding one of these original equipped one piece air cleaners maybe a hard find.  I would suggest you measure the opening on the existing air cleaner tube (I'm guessing like 5" diameter) then go to the Donalson air cleaner web site and find a suitable remote mounted air cleaner and hook up the two with good heavy duty flex tubing made for intake duty-meaning tubing that won't collapse with the suction of the intake.  Good Luck, TomC
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Tom & Donna Christman. '77 AMGeneral 10240B; 8V-71TATAIC V730.
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