sprngfldxj
NAXJA Forum User
- Location
- Springfield, Colorado
including using some form of a Chip or Resistor, Ideas?
Well, that counts out at least half of us!RCP Phx said:No lift,and a tuneup!(and dont forget a wax job)
Is there an ideal gear for best mpg for stock tire sizes or does it really make a difference?redXJlimited said:Regearing was also a huge help.
5-90 said:The AW4 is handily complemented with it's 3.55 gearing with OEM tyres, 30's, and (just barely...) 31's - beyond that, stop using overdrive (drive in "3" instead of "D".) AMC just dropped the ball when they put 3.07s in behind the BA-10, and ChryCo left it on the ground when they didn't change ratios behind the AX-15 (3.73-4.10 would probably have been better, but I don't recall the math and I don't have my notes to hand. Even 3.55 would have been a significant improvement, tho.)
5-90 said:Driving habits are the largest factor.
Second would be gearing/tyres relative to the engine's torque curve. There seems to be an ongoing experiment here - I've found my "idea cruise" at 2600-3000rpm, on 30's with 3.07's. Since I quit using fifth gear, that worked out to a cruise at about 65mph (good freeway speed) giving me about 2-3mpg more than crusing in fifth at that speed.
The AW4 is handily complemented with it's 3.55 gearing with OEM tyres, 30's, and (just barely...) 31's - beyond that, stop using overdrive (drive in "3" instead of "D".) AMC just dropped the ball when they put 3.07s in behind the BA-10, and ChryCo left it on the ground when they didn't change ratios behind the AX-15 (3.73-4.10 would probably have been better, but I don't recall the math and I don't have my notes to hand. Even 3.55 would have been a significant improvement, tho.)
I've found that vehicle speed has much less of a bearing on fuel economy than crankshaft speed - this "drive 55 to save gas" is more hokum than anything else. If you're at or near peak torque production at 55mph, it will work for you - otherwise, it won't. Period.
Ask any A&P or pilot that handles piston-driven aircraft, and he'll tell you that you get best range/best cruise at best torque. For the AMC242, that's somewhere around 3000rpm (RENIX seems to run a bit slower than ChryCo for that - I've got best cruise, as I said, at 2600-3000rpm. For you HO guys, you'll probably do better at somewhere around 3000-3400, at a guess. I'd have to look up the torque curve again.)
I actually read an article (I'm going to try and find it, and it wasn't from some joe blow newspaper) that keeping your tires aired doesn't really help with gas mileage too much. I beg to differ.RCP Phx said:No lift,stock well aired tires,good oil/fluids,and a tuneup!(and dont forget a wax job)
LOSTXJ said:Has anyone tride this HHO technology, where you fill a mason jar with distilled water and through electrolitic plates you convert it to HHO and send that down your intake. It is supposed to help 30 to 40 percent. I am looking into it.
http://en.wikipedia.org/wiki/Oxyhydrogen said:"Klein's design
HHO gas or Klein gas is an oxyhydrogen mixture made by water electrolysis, which has been trademarked Aquygen by the firm Hydrogen Technology Applications. Dennis Klein's patent states that his electrolyzer differs from Yull Brown's in that it lacks the electric arc feature.[11] The claimed applications of HHO are practically indistinguishable from the original claims of Yull Brown. The HHO trademark is associated with an unproven state of matter called magnegases, and a discredited theory about magnecules,[12] which is the basis for a number of fraudulent claims, and third party water-fuelled car scam attempts."
Ramsey said:Get a honda.