Quote:
Originally Posted by Whitetail Ranger
Yus i see..So thinking solely on transmission shift points ive seen many many forums on a topic of acceleration that makes the proposition of either shift at lower rpms with more throttle or shift at higher rpms with less throttle. Sometimes the pumping losses and BSFC and thermal dynamic efficiency debate doesn't make sense to me since we really cant be comparing gas engines with diesels since they operate in different ways. And i know my engine makes its peak torque at 3500 rpms and its an over square engine with the cam that's matched to it..Ya know this is a stock engine. Since the power is really made higher in the rpm then isn't it inefficient to try to accelerate at lower rpm with this motor? Its not made to loaf around town at low rpm levels when getting up to speed. Then ive heard others talk about accelerating at engines "peak torque" with lots of throttle and low rpm which doesn't make sense unless you have an engine that's more under square or mechanically tuned that way by camshaft configurations and stuff..I know this is mostly talked about for manuals transmissions but i think it can be brought up for autos too. I brought it up cause with my engine being the way it is then isn't the transmission shift points from the factory already correct for both fuel economy and power? seems like shifting lower than 3000 rpm or even lower than 2500 rpm wont do the job i want for lowering fuel consumption.
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You may make peak torque at 3500 but that is going to consume more gas then 2500 rpm .
I found that Ford did not tune the motor or transmission for economy or much performance. I'm embarrassed to say what mileage i got as it was only 21 mpg
driving with abandonment,as I did in that truck with max sidewall psi ..
I had a Geo metro convertible just before that truck ,
I was throttle happy with the Ranger doing rapid starts and 120kmh on the hwy , looking back.. That did not give me a great mpg figure , food for thought.
The Vulcan motor is a thirsty low hp motor, durable for sure but not a most eco friendly motor.