When you set the accelerator pump screw you can check it audibly. The engine can be running while you do this. I make very tiny corrections and then push the throttle by hand very very slowly and then again very quickly. If the accelerator pump is set perfectly the engine will very slowly or very quickly increase RPMs smooth and steady. If its not set right it will audibly 1) increase slowly, then quickly, then slowly again or 2) increase, stay the same, then increase again or 3) increase, decrease, then increase again. Its not correct until your RPMs audibly increase at exactly the same rate as you move the throttle at exactly the same rate either quick or slow. I hope it fixes your problem.
The speedometers use universal gears with all New Process transfer cases. There are only a few sizes to choose from because there are only four clocking positions of the adaptor. Even the electronic speed sensors mate to the drive gear with the exact same style of adaptor, so those have the same limit in accuracy. To make things worse your Eagle was designed for 195 tires when we all use 205s, 195s, or 235s. There is a four mph difference between a 205 and a 235 tire at highway speed, so I would guess about 1 to 2 mph difference between 195s and 205s.
Think of it this way. You could sit and calculate 3.42 to be the perfect axle ratio for your car. Whoopty-do. We create gear ratios by the ratio of teeth in your ring and in your pinion. You can't have a third or a thousandth of a tooth. You have whole numbers only available, like 35 or 36 teeth. That means you can only buy a 3.07 or a 3.54 gear set. You'll never see a 3.42 gear set sold. Its impossible to make one. The speedo gears are even further limited by the available clocking positions. Its nearly impossible to have an accurate speedo without a computer chip inside automatically correcting the sensor value by a multiplication factor.
Topic: Colorado-sourced bird (Read 11598 times)