Are large gas motor Rv's underpower?
At the risk of getting someone angry for me asking the same question they don't want to see again, that no doubt some people feel has been discussed enough. Are gas Class A's underpowered to tow a...
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down home wrote:
Down to basics. The diesels are heavier built and run at lower rpm. The first major over hall, is usually at 1,000,000 miles.
EPA regs have crippled diesel effecieny somewhat but it is still closer to 40% to the gas engine's 25% or so. that is the reason diesels have such big radiators they produce more power and more heat. Torque is what gets you up hill. That's the reason the big coaches are pushing 2,000 lbs or torque or more.
I can build you a big gas engine of 2,500 hp and more and 2,000 lb, of torque, or as much as your pocket can handle but you'll have to pull it down every little bit, if you use the power. Your fuel bill will be for the 4mpg range or less. If you can afford the diesel, get one before 07 and miss the pig p--- tank and corrossion problem too. I reemember some of the semis with 492 Ford gas engines and others. There's a reason the semis all run diesels. Reliability and power and economy, of fuel as compared to a gas engine, of the power neccessary.
I build a lot of race motors and a 2500 hp engine won't get 4 mpg. More like 10 gals per mile. In the new coach there's not a lot of difference in mileage or ride between the two. At a 100k more it would take many years to recover your cost.
