| PM | Quote | Reply | Full Topic |
Idahome
Joined: Wed May 2nd, 2018
Posts: 2165
Status:
Offline
Reputation: 
Reputation Points: 5490
We have a working speedometer and 4wheel drive
Before I could drive her around too much I had to finish up some extended sway bar links.
Now she is back in the shop for final alignment and fluid checks, before more test driving this time highway speeds out on the road.
If all goes as smoothly as I expect she will be ready for delivery!
Old links were 1.5" too short
So I fabricated some, I used Energy suspension urethane bushings this time around.
Energy bushings, threaded rod, some heavy pipe and thick washers + welder = new links!
Top nut is welded to the rod, lower nut is nylock so it will not come loose
I do not take credit for this design, I am simply just copying what was on the truck. So simple! works perfectly for drop bracket lifted Ranger!!
New tie rod boot for drivers side, existing was ripped
Found in Dorman help section
Done and done
New inner tie rod ends, new sway bar links and we are off and running
She sounds so good and with the steering now fixed the truck drives really really well!!
We used the Dakota digital bluetooth app to setup the speedometer calibrations
The settings are
Low input
Low output
Calibration value set to 1.71
Because = current tires are 30" tall
A 30" tire rotates 695 times in a mile
The 8.8 speed sensor tone ring has 108 teeth on it and it attached to the ring gear, so it rotates 1:1 with the tire
695 rotations x 108 teeth = 75,060 pulses per mile being generated by the rear axle speed sensor
This is the INPUT wire to the Dakota box
Inside the dakota calibrator
this number now gets multiplied by our set calibration value, which is set at 1.71 (I know from trial and error)
75,060 x 1.71 = 128,352
When you use output 3 on the dakota box this number is now multiplied by 0.0625 (1/16 of the value shown on Output 1)
128,352 x 0.0625 = 8,022 pulses per mile generated to the truck
Perfect!
Ford speedometer, cruise control, PCM is happy with 8000 pulses per mile +/-
Now using GPS and bluetooth we can fine tune the dakota to register the trucks exact speed on the instrument cluster and live data (PCM) for whatever tire size this truck ever sees (33's!!)
____________________
I build custom RBV, specializing in drivetrain conversions, wiring, suspension and complete custom trucks