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Old 01-30-2018, 05:25 PM   #3001
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Funny you should mention Dan --- Spent the past couple of day routing brake lines while my much wiser helper sorted out the hydraulics. Happy to have the assistance of a "real" car builder on that stuff. Not the simplest task in the world trying to work up lines and fittings to mate a modern Corvette master cylinder to a heavy duty hydroboost that attaches to an Isuzu NPR gear box in a '46 Chevy school bus...all driven by a Cummins/Saginaw pump. He did say this combination was a first for him. A few fittings had to be custom made (two separate fittings welded together) but he said that sort of thing he does do routinely. Getting this part going is a big step forward.


The NPR gearbox is now hooked up.


The hydroboost is plumbed but we are still waiting to get the MC back and attach it.

Meanwhile...

I think I have finally found an air filter that will work with my "Big Rig" style airbox fantasy. The real big rig filters are the size of my engine so I had to sort out how to get some air into the motor with a little style. Big rigs use what is called a "reverse flow" filter meaning the air comes into the center of the filter first, then goes out the walls. Most cars & such flow the other way so I had to come up with a way to get the look I wanted but use a conventional flow filter.


Here is the 'plan". Lets just hope it works. The filter I ordered will be here tomorrow and should tell me what will and won't cooperate.



ONWARD!
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Old 01-30-2018, 07:30 PM   #3002
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lookin good to see brake lines !!!! ultimately the names of the components dont matter in the hot-rod world.. just function and capacity.. so using an NPR steering box with a saginaw pump is no issue as long as its a big enough pump to supply the volume of fluid at pressure to support both braking and steering at once then theres no issues.. saginaw made a bunch of pumps and definitely made them big enough to do what you are doing.. with a diesel you have the advantage of a much lower range in minimum to maximum RPM so you can fit a slightly smaller pulley to the pump to get good volume at lower RPMs.. gas engines have the issue of low idle and High max.. (causes us issues with A/C when running compressors close to their rated capacities..need enough cooling at idle but have to sustain max RPM).. having a pump larger than you expect your fluid volume to be is a good way to handle it.. I dont know the design of your components but ultimately names adont matter.. if it pumps fluid at correct pressure and volume then it will work..
-Christopher
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Old 01-30-2018, 08:00 PM   #3003
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Fun to see it all coming together! Are you going to wrap the filter in polished stainless steel? How are you fabricating the rain cap? Jack
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Old 01-30-2018, 08:09 PM   #3004
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Howdy Jack --- Roger the SS. And the rain cap will come from a "real" big rig can. Donaldson sells'em as well as lots of truck shops.

Cadillac --- The Cummins 4BT Saginaw is almost identical pressure and volume wise to what runs the Isuzu so I am hoping they play well together. And both the NPR and my rig have PS & PB.

Will be ordering a trans cooler here shortly. Looking at a Derale Hyper-Cool Extreme Remote. Too big for the engine bay so it's gotta go below...somewhere.



ONWARD!
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Old 01-30-2018, 09:43 PM   #3005
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im all about remote trans coolers because you can control both too hot or too cold. by simply using the fan or not.. driving in the last Arctic wave we had (i was in the bus at -7 outside on the freeway).. my trans never got above 133 degrees which I understand is too cold for it.. I was told it wont hurt it overall but allison doesnt consider a trans even "warmed up" until 140 in the TCM programs.. my cooler is just my radiator loops. and in minus 7 on the freeway with every heater in the bus on maxx im guessing my thermostat was barely cracked open so the trans had dead cold coolant in the cooler.

a remote cooler isnt going to get much wind across it so you can probably simply control the trans temp with it's fan..
-Christopher
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Old 01-30-2018, 09:59 PM   #3006
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Agreed. keeping the trans happy means keeping it comfy. Not too hot, not too cold. I like your idea of a bypass that is thermostatically controlled. Not sure I know how to pull that off just yet...but...I like the idea.
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Old 01-30-2018, 10:04 PM   #3007
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Agreed. keeping the trans happy means keeping it comfy. Not too hot, not too cold. I like your idea of a bypass that is thermostatically controlled. Not sure I know how to pull that off just yet...but...I like the idea.
Tango,

A little bit of Bondo, some paint, and voila - instant happy transmission temperature! Anything can be fixed with Bondo, right?

M
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Old 01-30-2018, 10:07 PM   #3008
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And if Bondo doesn't do the job...there's always JB Weld!
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Old 01-30-2018, 10:08 PM   #3009
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And if Bondo doesn't do the job...there's always JB Weld!
AMEN!!!!

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Old 01-31-2018, 01:07 AM   #3010
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Meanwhile...

I think I have finally found an air filter that will work with my "Big Rig" style airbox fantasy. The real big rig filters are the size of my engine so I had to sort out how to get some air into the motor with a little style. Big rigs use what is called a "reverse flow" filter meaning the air comes into the center of the filter first, then goes out the walls. Most cars & such flow the other way so I had to come up with a way to get the look I wanted but use a conventional flow filter.


Here is the 'plan". Lets just hope it works. The filter I ordered will be here tomorrow and should tell me what will and won't cooperate.



ONWARD!
I dig it. That's what was floating around in my head, just not as gifted an artist as you Tango.
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