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HZ odometer out

Hi,all....
I recently changed diff ratio in my HZ from 2.78 to 3.08.
As a 202,the 2.78 was a tad sluggish off the mark,but cruised nicely.But the speedo was way out(43km/h on the speedo,instead of 50km/h in reality,when comparison driven behind other cars.The coloured toothed gears available did not quite cover my setup)
Now it is much closer with the 3.08...48 on the speedo instead of 50 in reality....close enough,I`m happy with that.
But my problem is,with either diff ratio,the odometer is wrong.A round trip to work and back to home is exactly 70km...but both diff ratios will say 82km.
I thought logically,that if the 3.08 is (nearly) correct speedwise,then the odo would be more correct,but still is as identically as wrong as the 2.78.
What exactly governs the distance the odometer registers???
many thanks
Dusty

Model: 
Engine: 

Comments

The distance is governed by the turn of the speedo cable and obviously your logic thinking is incorrect as your speedo is still out.

Try this

http://codes.oldhold...

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hi,again
My point was..
2.78 ratio and needle on speedo was way out.
3.08 and needle on speedo is nearly perfect.
These were both while I was following various other cars who signalled at certain speeds,so I could compare my speedo needle to theirs.
BUT,both ratio diffs give IDENTICALLY wrong odo readings for a known distance trip.
I don`t see the point of needing to change the coloured/toothed cogs now that km/h is nearly perfect,but the odo readings should have been more accurate now,and they`re not.

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Dusty
'Duty Now For The Future.'

Get real, a wave from your mate does not mean his/her speedo is correct.
Use a navigational device to get it right.

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