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driving my HJ van. 253 trimatic. i got the wife to drive at 100 and my speedo reads 110, it has standard GTS rims and 205/70/14 tyres. any thought on what colour speedo drive i should look for to correct this. thanks guys.......... Jamie
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Will need your diff ratio as well.
Also, the colour of the speedo drive (big) gear inside your extension housing. (Usually white)
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Its easy to calculate.
Holden speedo driven gears all have around 20 teeth. This means that by increasing or decreasing by one tooth equates to about a 5% change.
Simply check what gear you have not & increase it by two teeth. For example, if its a |
If at first you don't succeed, just call it Version 1.0 |
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Have a look on this page http://codes.oldholden.com/Speedo/index.html may give you a guide on what gears to use. Leroy "Planet earth is the asylum to which the rest of the universe sends its lunatics" Voltaire |
"Planet earth is the asylum to which the rest of the universe sends it's lunatics"
Voltaire |
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Jvanner, something else to take into consideration is your tyre size. If you are likely to keep the same size tyres on, then no worries. If you are likely to change to different tyres in the near future, wait until this is done before changing speedo driv
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