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Old 09-16-2009, 04:38 PM   #15
Full Timers/Diesel power.
 
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1983 31' Airstream310
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Originally Posted by cooperhawk View Post
Yesterday we removed the rear drive axle. Yep, the complete banjo, and took it to a rear end shop to have the gear ratio changed.
As long as you cruise the flats, you're fine. Don't try to climb west of the Rockies, though. Been there with our first diesel mo/ho. Hard to believe U.S. Gear does not make a o.d. for your coach.
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Old 09-16-2009, 05:36 PM   #16
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Use the link below and you can calculate exactly what your RPM:Speed is or will be
* * Automotive Programs by Bowling & Grippo * *

As far as the mount that is a very simple fix, the overdrive will usually add no more then a couple inches and new mounts are easily fabricated

Good Luck
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Old 09-17-2009, 08:17 AM   #17
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As long as you cruise the flats, you're fine. Don't try to climb west of the Rockies, though. Been there with our first diesel mo/ho. Hard to believe U.S. Gear does not make a o.d. for your coach.
Not worried about it. The 86 model has a much more powerful engine than the 83.
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Old 09-17-2009, 08:53 AM   #18
Full Timers/Diesel power.
 
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Originally Posted by cooperhawk View Post
Not worried about it. The 86 model has a much more powerful engine than the 83.
Lucky you!
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Old 09-19-2009, 09:29 AM   #19
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The numbers on our chasis verified that the motorhome has the factory turbo and not the after market. Airstream did not start putting those engines in until late 84. This engine is superior to all previous years. It has Cylinder oiling, a heavier crankshaft, stronger connecting rods, and stronger pistons.
In addition the cylinder head has better engineered valves.

You can get this information directly from Isuzu's Industrial Division web site.

The engine also has about 30 more horsepower than earlier models.
Since the transmission and drive train swallow a lot of the horsepower produced by the engine, this is an additional 30 hp with no additional resistance. It applies directly to the wheels.

Now while I realize that your last post was just short of sarcasm, I am providing this information to explain my lack of concern. Also, I have climbed quite a few mountains already and had no problem at all. The only time I ever had the unit shift down to low was on a 12 percent grade towing a car on a very hot day and I had to take it easy not to overheat.

OK?
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Old 09-19-2009, 10:38 AM   #20
Full Timers/Diesel power.
 
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I meant "lucky you" seriously! I was not aware Izuzu made a bigger engine. Is that a Allison trans?
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Old 09-19-2009, 12:57 PM   #21
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Yes, its an Allison four speed.
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Old 09-19-2009, 01:03 PM   #22
Full Timers/Diesel power.
 
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Yes, its an Allison four speed.
Sounds like you have the best of the best.
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