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Old 03-02-2006, 06:29 PM   #1
vegabass
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Default Correct Speedo Cog help

ok guys i bet your all sick of my problem posts but i promise this will be the last for a while,


With my manual conversion my speedo is incorrect, i bought 2 differet speedo cogs and am wondering if anyone could tell me wich one i need.

I have a 3:4:5 Diff, with a T5 that came from a XH ute and am running 235 45 R 17 rims.


the one in there at the moment shows 110 when im doing 100. it is a 20 cog brown one

I was told i need more teeth to show less on the speedo,

which one do i need,

the green one -21teeth
the grey one - 22 teeth.

Help is much appreciated.

Cheers

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Last edited by vegabass; 03-02-2006 at 06:40 PM.
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Old 03-02-2006, 06:57 PM   #2
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i think you mite need the Green 21 teeth one but you can check on fordmods.

here a link

http://www.fordmods.com/forums/documents.php?doc=30

Nick
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Old 04-02-2006, 08:58 AM   #3
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Quote:
Originally Posted by EL Ghia
i think you mite need the Green 21 teeth one but you can check on fordmods.

here a link

http://www.fordmods.com/forums/documents.php?doc=30

Nick

Cheers for that! ill see how it goes
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Old 04-02-2006, 09:36 AM   #4
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Quote:
Originally Posted by vegabass
ok guys i bet your all sick of my problem posts but i promise this will be the last for a while,


With my manual conversion my speedo is incorrect, i bought 2 differet speedo cogs and am wondering if anyone could tell me wich one i need.

I have a 3:4:5 Diff, with a T5 that came from a XH ute and am running 235 45 R 17 rims.


the one in there at the moment shows 110 when im doing 100. it is a 20 cog brown one

I was told i need more teeth to show less on the speedo,

which one do i need,

the green one -21teeth
the grey one - 22 teeth.

Help is much appreciated.

Cheers
your speedo is 10% out so change your speedo transducer by 10%. Try the grey 22teeth.
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Old 04-02-2006, 10:29 AM   #5
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Yeah I'd agree with that

the difference is closer to 10% than 5%
20 + 5% = 21
20 + 10% = 22
so go with the 22 first

Or try both, it's no big deal to change it
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Old 04-02-2006, 03:22 PM   #6
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yep the grey one is the go that will be closest to what you want. it will actually make the speedo read 9% slower. 20 / 22 = .909 so thats 9.1% slower.
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Old 04-02-2006, 10:23 AM   #7
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i'm running grey with 3.45's and its fairly accurate
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Old 05-02-2006, 08:28 AM   #8
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Dont want to sound smart mate, but use the one that was in your auto. Thats if you haven't changed the ratio of the diff. 5 minute job.
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Old 05-02-2006, 09:19 AM   #9
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You could try a Black 23 tooth.
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