Speedodrive Gears

[goob]

MacsAutoParts.com is a good place to start. They have the parts you are looking for. You can order online or call them at (877)283-6920.

Gary.

[Ford Only]

If your speedometer will only go to 35 mph, you probably have a problem with the speedometer head. The speedometer gears only makes small changes.
I would hook a working speedometer head to the cable under the dash and see if that ones reads correct, if it does you know the problem is in the gauge itself, if it reads the same (35mpg) the problem is in the drive gear in the transmission not the gear on the cable.
You can test the speedometer in place with a drill and short piece of cable, its not easy but is easier than removing the whole speedometer.

[kirky2]

Hi Ford Only
As I felt I had explained, after dismantling the speedohead, cleaning, rebuilding and refitting and connecting up a new cable, I verified that the 'system' thus far was 'fine' by spinning the bottom end of the cable from under the car with an electric drill and got good steady readings up to circa 90 mph. The problem lies at the interface twixt cable bottom (driven) gear and 'drive' gear on transmission tail shaft. I suspect they are not engaging properly and would like to know what the correct pairing is for my spec. car so that I can have them to hand when I dismantle transmission to do the repair to avoid long off-road delay.
Somewhere that information should be available, surely??? - but I don't know where to look.
Many Thanks
JK

[kirky2]

MacsAutoParts.com is a good place to start. They have the parts you are looking for. You can order online or call them at (877)283-6920.

Gary.

Thanks Gary. I notice that Mac's offer a selection of gears with various teeth but I need to know what the specified driven/ drive gear pairing should be for my car. (I don't see any tailshaft drive gears mentioned). I understand what can happen is that when the flexible cable is withdrawn from the transmission tailshaft, on occasions the gear is not retained on the end of the flexible and falls into the tailshaft housing and is unretrievable. I cannot see inside the transmission when in situ to see anything. It could be that a previous 'incident' has caused a loose driven gear to have minced the drive gear on the tailshaft. (I suspect the drive gear is also plastic). Before I take the tailshaft housing off to investigate, I need to obtain THE CORRECT PAIR of gears to effect a speedy repair. Does anybody know what the correct 'set' should be?
Many Thanks.
JK