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Old 11-11-2008, 08:23 PM   #2
fulltiming
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Location: Texas
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Welcome Graham. The redline for the 6V92 and the 8V92 is 2100 rpm with a no load (downshift) max of 2300 rpm. You should not put the engine under full load at less than about 1900 rpm to avoid lugging the engine.

As far as highway speed, you can run the speed limit but be VERY careful of the condition (age, cracks, etc). Blowing out a tire on a motorhome is no fun at all. Most truck tires are rated at 65 mph or 75 mph although I have seen a few on motorhomes that were designed for urban use that had a 55 mph speed rating. I typically run about 68 or so, speed limit allowing. Since I am typically towing my car, I obey the truck speed limits rather than the car speed limits which are legal in some states if you are not towing. Just remember that you are up in the weight range of a truck.

Make sure you do not let the engine idle for long periods of time at low idle.
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1992 Newell 43.5' #281
8V92 DDEC-2, HT740
PT Cruiser GT with Remco Transmission Pump
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