Thread: Tacho

Originally Posted by QLDMIKE

Standard V8 Tacho would not have read correctly with a TD5; however i am open to any solutions people may have as to how I can get my standard dash tacho to read correctly.

The standard dash tacho on rangies is driven from the alternator, so the engine that's fitted shouldn't matter in the slightest. Drive it from a TD5 alternator and it should work although pulley size differences could give you an error. Mates with V8 RRC's have found 10% or so difference in tacho readings after an alternator swap.

Failing that. My tacho had already been butchered to work on DC, I made up a little frequency-voltage converter. It's quite simple to make, I bought a little chip and hooked up about 6 wires with a resistor and trimpot to tune it.

Originally Posted by Dougal

S1 discos did indeed come with a tacho.

Originally Posted by clean32

85 isuzu county, flat dash with the vertical air vents

apart from getting a smiths type or s digital type

i doint think i could cut out a disco tacho

Originally Posted by clean32

apart from getting a smiths type or s digital type

i doint think i could cut out a disco tacho

There's no point trying to fit a disco tacho to a county, the disco info was for the benefit of the disco and rangie owners reading this thread.
For the county a standard 52mm gauge driven off the alt would make the most sense.

Originally Posted by Dougal

There's no point trying to fit a disco tacho to a county, the disco info was for the benefit of the disco and rangie owners reading this thread.
For the county a standard 52mm gauge driven off the alt would make the most sense.

I second that - probably the simplest way if you already have the pulse wire installed

Guys im still looking, seems that the standard 52mm tachos are becoming extinct. i would like some thing that will sit beside the speedo on my extended pod and look like it belongs there.

For a 52mm tacho, you can try E-bay. Although they seem to be alot of "no-brand" chinese units.

For my Rangie, I ended up going with the VDO. Looks about similar to the smiths gauges. Not cheap, though.

there only seem to be digital tachos for diesels on ebay

Originally Posted by clean32

Guys im still looking, seems that the standard 52mm tachos are becoming extinct. i would like some thing that will sit beside the speedo on my extended pod and look like it belongs there.

VDO still do a 52mm tacho - here's one:

https://www.europaspares.com/prod.as...003&imgstate=0

The picture shows the 0-7000 RPM one, but it's also available with a 0-6000 RPM range more suited to a diesel than the 0-7K or 0-8K ranges.

Here's a cheaper 52mm tacho that is available with a 0-4000rpm scale:

https://www.europaspares.com/prod.as...341&imgstate=1




Jon