Thread: Defender 300tdi Tacho - help!

ok guys now I need your help.

As Uncle Ho rightly points out above, I need all sorts of information before I can order my VDO.

I jumped under the 'fender today and tried to see if there were any stickers or such on the Alternator. There was a sticker, but it just told me that it was a Magnetti Marelli and that the model was A127-65 (or something like that, was kinda hard to see properly even after I cleaned it off with a rag).

Make and model of vehicle:
- 1994 Land Rover 300tdi Defender 110 Station Wagon
Voltage:
- 12v
Alternator:
- Megnetti Marelli
Number of pole pairs:
- ???
Alternator pulley Diameter:
- ???
Crankshaft Pulley Diameter:
- ???

Does anyone know how many "pole pairs" the alternator is likely to have or even better, tell me / show me what to look for so I can count them myself??

As for the Alternator and Crankshaft pulley diameter, I guess I'll have to grab a ruler out and measure those the ol' fashioned way

G'day guys,

Got the information I needed so now I can order the tacho. If anyone else is interested here it is:

Originally Posted by Grizzly_Adams

Make and model of vehicle:
- 1994 Land Rover 300tdi Defender 110 Station Wagon
Voltage:
- 12v
Alternator:
- Megnetti Marelli
Number of pole pairs:
- 12 poles, so that would be 6 pairs
Alternator pulley Diameter:
- 49.2mm
Crankshaft Pulley Diameter:
- 162mm