The Badger Posted May 16, 2009 Share Posted May 16, 2009 But I am still building my 110... yeah, got the majority of the running gear sorted, just missing, well the other 1/2! Anyhow, I have a question as im getting confused about speedos. Fitting a TD5 dash and I have a 1.2 ratio transfer box, what speedo do I need? will pop a image of the build project at some point. Quote Link to comment Share on other sites More sharing options...
BogMonster Posted May 17, 2009 Share Posted May 17, 2009 Western has a mega thread on here somewhere about fitting a late type speedo. In short though, you could fit either sort i.e. the old cable driven type with an old speedo head, or a Td5 electronic speedo with the sensor on the transfer box, though the later type looks nicer Quote Link to comment Share on other sites More sharing options...
bishbosh Posted May 17, 2009 Share Posted May 17, 2009 Read the wibbly wobbly speedo thread and al will be revealed. Quote Link to comment Share on other sites More sharing options...
western Posted May 17, 2009 Share Posted May 17, 2009 you will need the speedo drive gear & transducer unit from the Discovery 1.22:1 ratio transfer box, then fit these to the TB you have, the drive gear will correct the speedo. as a example my 110 is running the 1.41 TB with the blue drive gear frc3310 with 255/85x16 tyres which operates the Td5 transducer & electronic speedo, reads almost spot on according to my gps unit speed reading. Quote Link to comment Share on other sites More sharing options...
Aragorn Posted May 17, 2009 Share Posted May 17, 2009 if you use the disco drive gear you'll get the reading as though you were on disco sized tyres... this means for 235/85's or 265/75's your speedo will be underreading quite a bit. You want to use the original defender drive gear, with the transducer for the TD5 speedo. Quote Link to comment Share on other sites More sharing options...
western Posted May 17, 2009 Share Posted May 17, 2009 You want to use the original defender drive gear, with the transducer for the TD5 speedo. DOH, well spotted, of course he does, Quote Link to comment Share on other sites More sharing options...
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