RodInNS said: (quoted from post at 20:17:15 07/22/08) I'd say you have 4.10's the same as I do. The 225/70's are about the same circumference as the 215/75's that mine came with and it runs about 2200-2300 or so at 60 mph. The transmissions are the same so I'd guess that you have the same axle ratios.
For what it's worth, I've been told, second hand of a guy that put a Mazda B3000 engine in a Ranger that had a 3L Vulcan engine. The Ranger with it's original gave poor mileage, the same as mine. When he put the Mazda version in, he was getting mileage as you describe. The guy that told me that was a reasonably reliable source, and I have no way to explain why that would happen... but that's what they claim. I know that there is no way that my truck, on it's best day on summer gas with me driving 50 mph would it ever even dream of coming close to that. 24 mpg is the absolute very best it ever got and that was averaging somewhere a little over 50 mph. Right now I have 235/75R15's on my truck and it will turn about 2000 at 60 mph. That resulted in about 30 more miles per tank of gas... and that's driving about the speed limit of 62.5 mph (100 km/h).
Rod
Minus the front clip and some other minor appearance items the Ranger and Mazda B-Series are identical. They came off of the same assembly line, both with Ford stamped all over them, both used the same 3.0 vulcan. If changing the engine helped milage, there was something wrong with the original one.
Kind of like comparing a GMC to a Chevy.
One thing that most people don't realize is small engines get better milage at a higher RPM. These things don't peak until almost 4k RPM, they need to rev to be happy.
This post was edited by 02XLT4X4 at 20:54:40 07/22/08.
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