When I originally installed the TBI setup on my ’87 FJ60 I used a vehicle speed sensor (VSS) from Jags that Run. While this was a good sensor and lasted many years, it never tightened snugly to the transfer case driven gear housing. This would cause a shaky speedometer needle when cold. Even after trying to shim it with a washer it wouldn’t tighten down. On a short trip to Capital Forest I had a stick get caught on the speedometer cable and brake the sensor off (forgot I didn’t have the skid plate on).
After searching around for an alternative I found Aurthur Allen, a manufacturer in Chicago. They make a very nice sensor with a cast hosing and solid brass fittings.
While it is available in metric threads to fit the Toyota cable/transfer-case, it didn’t have the correct tang on the transfer-case side or the correct slot on the cable side. I still had the drive tang from the old VSS.
The old VSS had an extension housing built with the appropriate driven tang (or drive tang to the cable I guess).
Any way, it was easy to disassemble the sensor and remove the shaft. I then drilled out the TC side to just over .187″ (using a 3/16″ drill bit) and using my cut off wheel made a slot for the cable.
I then drilled out the brass fitting to 5/16″ to make room for the protrusion on the tang and re-assembled.
Finally I mounted the sensor and finished the wiring. For the wiring I used a two pin weather pack connector.
A few notes on this VSS. It tightens town nice a snug with no movement. It is shorter than the other VSS because it doesn’t have the extension added. I suppose only time will tell if it is a better design or not. I ordered this one from Portland Speedometer for $100 to my door. A little more the the JTR, but hopefully worth it.