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speedo gear 

 

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 Post subject: speedo gear
Posted: Fri Jul 28, 2006 7:52 pm 
Parts Gopher
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i have an el ghia v8 with 3.45 ratio in the diff. my speedo was fluctuating a little so i decided 2 change the plastic gear in the tranny. ford told me i should use a black 23 teeth one but the one i pulled out was white with 19 teeth. then i spoke to another bloke at ford and he said that i need a 20 or 21 tooth. what do i do?
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Posted: Fri Jul 28, 2006 8:41 pm 
Smokin em up
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If it was accurate and worked fine before it started fluctuating then get the same as what you had in there. It wouldn't be the first time dealers were talking out of their A**e.
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Posted: Fri Jul 28, 2006 11:42 pm 
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if you changed the diff ratio, i'd change the gear to a different spec, but if the diff hasn't been changed i'd put teh same back in it.

 

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Posted: Sat Jul 29, 2006 12:13 pm 
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Is this of any help??? There is a calculator part way down.

http://www.fordmods.com/phpBB2/documents.php?doc=30

 

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Posted: Sat Jul 29, 2006 12:15 pm 
Getting Side Ways
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hey Paul we're not all that bad ya know.

 

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Posted: Sat Jul 29, 2006 5:40 pm 
Smokin em up
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Leroy wrote:
hey Paul we're not all that bad ya know.


Like everything else in this world it only takes a few to spoil the reputation of others but alas it does happen and too often, never mind. And I am smiling so please don't take offence.
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Posted: Sun Jul 30, 2006 11:13 pm 
Getting Side Ways
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I don't know if it will work for you, but with my last car an EL XR8 ex-police, I found by accident that when I pushed the trip meter reset buton for up to 3 minutes (sometimes less?) that I could calibrate the speedo up to 16% either way.
It worked on a mates EF fairmont V8 also.
To calibrate properly it is wise to use a dyno, as by just relying on tooth #'s isn't that accurate.
hope it works for ya, kenny

 

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Posted: Sun Jul 30, 2006 11:32 pm 
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kenny wrote:
I don't know if it will work for you, but with my last car an EL XR8 ex-police, I found by accident that when I pushed the trip meter reset buton for up to 3 minutes (sometimes less?) that I could calibrate the speedo up to 16% either way.
It worked on a mates EF fairmont V8 also.
To calibrate properly it is wise to use a dyno, as by just relying on tooth #'s isn't that accurate.
hope it works for ya, kenny

Only the cop clusters had that feature, my EF had the cop cluster aswell, very handy feature to have.
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Posted: Mon Jul 31, 2006 10:28 am 
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i would of said you would need something like 22 teeth. Is it the original box? 19 tooth gear was never an option for EF-EL.

 

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