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Engine Discussion of preventative/corrective maintenance and other technical issues regarding your coach's engine.

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  #131  
Old 12-17-2008
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Randy Dupree Randy Dupree is offline
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and,inline engines make more torque.
torque moves the world.
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2000 LXI 43
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  #132  
Old 12-17-2008
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After reading the discussion on another forum about the direction of the fan, it would seem that the right decision should be made now. With the intercoler on the outside the cooler air would need to be pulled into the engine room from the rear, Intercooler first, radiator second. With the intercooler inside of the radiator the air should be moved to the outside (rear) Intercooler first radiator second.

So changing the direction will not be as simple as reversing the fan blades.
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  #133  
Old 12-17-2008
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Default fan direction wow~!!!!

much discussion around about this but some how they have not looked at this picture.

will see what happens when we drive...

tired and didn't take much pic..tomorrow we will have pic of todays and tomorrows work...

busy work today..getting fuel lines/cables/intercooler and lines/exhaust fitted

its coming together..
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RWoody
2003 LX Single Slide Hauling Wood 5
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  #134  
Old 12-17-2008
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Crit: Yes, you are correct, the CAT has 79.5 ci. per cyl., the *** has 84.4 ci. per cyl., but that's only a 6.6% increase, not enough difference I would think.

Randy:Torque no doubt moves but it takes HP to get it.

Mike: There you go, the *** must be able to handle a bunch without damage.

While trying to find the answer to this off forum I came across a 3208 blown running nitro, said to deliver 5000 HP, used in a tractor pull contest.

If I could recall correctly the days of boring and stroking an engine, it seemed that added stroke increased bottom end torque, while boring increased the top end. Possibly the relationship of bore to stroke is greater for the Cummins too?
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  #135  
Old 12-17-2008
davidmbrady
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She looks like she's really coming together Woody. Great Job!

David Brady
'02 LXi, NC
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  #136  
Old 12-17-2008
fxdwg fxdwg is offline
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A mechanical Cummins can be stepped WAY up with little effort. They make great power for their fuel usage, too. It's going to be a great upgrade. I can attest to a straight 6's torque.
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  #137  
Old 12-17-2008
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the charge air cooler and the radiator are side X side in an SP,even woodys SP!

here my take on the fan,blowing or sucking.
theres a low pressure area at the rear of the coach,we all know that.
so what changes when you put a 28'',many bladed fan rotating at 2000 RPM on the edge of that low pressure area?
Anybody?
remember that fan? its the fan off the fire truck,its made to suck like crazy when the truck is sitting at a fire,running all the time at who know what RPM,without overheating the engine.

boys and girls,air does some funny stuff sometimes.
I bet it will cool just fine.
you guys ever notice when you have an oil leak its all over the BACK of the bus?
like maybe its getting sucked onto the back?
how could that be? it should be blowing away from the back,right?

also,the fan is properly placed in the fan shroud,and the shroud is tight arond the rad and the CAC.

hey,you guys ever seen those big concrete trucks with the front chutes?
the engine sits on the back in a big box?
you think the fan sucks or blows in that truck?
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  #138  
Old 12-17-2008
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Randy Dupree Randy Dupree is offline
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time will tell on the power and the cooling i guess,woody is already talking twin turbos...
and the fuel plate is easy to move for more power,and i've re-groud a few of them to add even more fuel.
the cummins with a bosch P-pump is a sweet engine indeed!
we built a 4'' straight pipe,thats steps up into a 5'',free flow!

we worked Woodys butt off today,he picked this week to quit smoking,i think we just may have to kill him! hahaha!
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  #139  
Old 12-17-2008
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rwoody rwoody is offline
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Default 3060 gear ratio

MECHANICAL RATIOS (RANGE)*
First
3.49:1



Second
1.86:1



Third
1.41:1



Fourth
1.00:1



Fifth
0.75:1



Sixth
0.65:1



Reverse
-5.03:1

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RWoody
2003 LX Single Slide Hauling Wood 5
2 miles east from Texas Highway 37-97
Just a Hobby Shop now-Bird Repairs upon Appt and my Schedule -USAR Retired
Pleasanton Tx 78064
Do not use PM... please use
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  #140  
Old 12-17-2008
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rwoody rwoody is offline
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Default bertha butt engine trans spec

  • Differential Gear = 5.29 to 1
  • Transmission Gear = 0.65 to 1
  • Tire Diameter (Inches) = 43.00
  • Engine RPM = 2400
Computation Results:

Computed Vehicle MPH is 89
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RWoody
2003 LX Single Slide Hauling Wood 5
2 miles east from Texas Highway 37-97
Just a Hobby Shop now-Bird Repairs upon Appt and my Schedule -USAR Retired
Pleasanton Tx 78064
Do not use PM... please use
rwoody@fullnet.net
http://www.ebay.com/usr/woody19571

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