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09-14-2009, 07:30 PM
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#1 |
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New Member
Join Date: Jul 2009
Location: Sayreville NJ
Year: 1994
Make: ford
Model: ranger xlt&F350xlt4x4 78 1/2 hd FXS
Engine: 2.3&7.3 IDI Diesel
Class: 2wd&4x4
Posts: 20
Rep Power: 0  iTrader: (0)
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speedometer correction confusion
gotta 94 ranger 2.3/auto with stock axles far as i know.i changed tire size from 225/70/14 to 235/75/15. from what i can tell speedo is 6-7mph slow.took the gear outta trans tail and counted 18 teeth(recounted many times)ford dealer told me the stock gear is 21tooth and by his calculations i need a 19 tooth(which i thought WAS stock)this makes no sense to me.parts guy gave up & gave me the "its special order/no returns?(and i never heard this)"u gotta buy 2 cuz there's 2 to a bag)by my calculations i need a 16tooth but not sure.i get paid for mileage so every day gone by costs a little more. im even tryin' to nudge it up alittle.
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09-14-2009, 10:07 PM
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#2 |
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Member
Join Date: Jan 2009
Location: North Eastern Ca.
Year: 1986
Make: ford
Model: bronco 2
Engine: 4.0
Class: 4x4
Used For: 4x4 and DD
Posts: 1,179
Rep Power: 11 iTrader: (0)
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Sounds like your on course to me, smaller gear faster speed reading you just let the parts man derail your program. you need to figure percentage wise if its one tooth or two.He knows what it's supposed to be but you know what it is.
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09-14-2009, 10:09 PM
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#3 |
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Member
Join Date: Dec 2008
Location: Muncy, PA
Year: 1994
Make: ford
Model: ranger
Engine: 4.0
Class: 4x4
Used For: everything
Posts: 1,606
Rep Power: 12 iTrader: (0)
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pick a higher speed to check your it at. then recalculate
__________________
94 ford ranger 4.0 5 spd with 260k Twin Sticks and 31s straight pipes |
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