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Discussion Topic:
spedo gears
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tudorbilll |
06-18-2012 @ 11:19 PM
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New Member
Posts: 108
Joined: Oct 2009
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On my 53 Merc how many teeth on the speedo gear when i have 4/11 rear end ? I have to run 5 MPH faster reading to get the true speed. 55 realy is 50 mph. BILL
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supereal |
06-19-2012 @ 5:52 AM
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Senior
Posts: 6819
Joined: Oct 2009
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The standard gear for 4:11 is 21teeth. Speedometer accuracy is affected by tire size and inflation, as well as condition of the speedo itself. Five percent variation isn't rare.
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tudorbilll |
06-19-2012 @ 9:09 AM
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New Member
Posts: 108
Joined: Oct 2009
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Thanks Super your a great help.
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CharlieStephens |
06-19-2012 @ 12:33 PM
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Senior
Posts: 894
Joined: Oct 2009
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If the speedometer needs repair and you fix the problem by changing the gear you will then have a problem with the odometer. Charlie Stephens
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