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Anyone know what ratio sierra diff 'U' denotes?
dern - 26/1/05 at 04:24 PM

Anyone know what ratio sierra diff 'U' denotes? I can't for the life of me find the code list now (I think it's on the end of a broken link I found on one of my many many searches.

Thanks,

Mark

[Edited on 26/1/05 by dern]

smart51 - 26/1/05 at 05:15 PM

I believe that it means 3.38:1 ratio. a good one I think.

dern - 26/1/05 at 05:36 PM

Thanks for that but sadly not, I found my written list when I got home and it's a 3.62. A 3.38 is a 'V'.

Cheers anyway,

Mark

Mark Allanson - 26/1/05 at 07:11 PM

Ratio Code
3.14 M
3.36 A
3.38 U
3.62 V
3.64 3
3.92 D

dern - 26/1/05 at 08:17 PM

quote:
Originally posted by Mark Allanson
Ratio Code
3.14 M
3.36 A
3.38 U
3.62 V
3.64 3
3.92 D
This is where I got mine from...

http://fordsierraclub.co.uk/forum/viewtopic.php?p=100105#100105

...which suggests you have the U and V the wrong way around. Where did you get your info from?

Regards,

Mark

Mark Allanson - 26/1/05 at 08:41 PM

My local ford dealer, he or I may have transposed a letter, or god forbid, the sierra boys slipped up?

dern - 26/1/05 at 10:10 PM

quote:
Originally posted by Mark Allanson
My local ford dealer, he or I may have transposed a letter, or god forbid, the sierra boys slipped up?
Lol. It's difficult enough to work out what car has what diff without more confusion

Mark

JoelP - 26/1/05 at 10:19 PM

statistically, its much more likely to be a 3.62. I dont suppose you know what car it came from?

stephen_gusterson - 26/1/05 at 10:41 PM

why not turn the diff over with one of the outputs static, and see how many input turns per output turn?

atb

steve

dern - 26/1/05 at 10:44 PM

quote:
Originally posted by stephen_gusterson
why not turn the diff over with one of the outputs static, and see how many input turns per output turn?
Because it's on ebay, in a car.

Mark

dern - 26/1/05 at 10:45 PM

quote:
Originally posted by JoelP
statistically, its much more likely to be a 3.62. I dont suppose you know what car it came from?
That's what I figured too. It's in a 2.0 litre GT twin cam.

dern - 26/1/05 at 10:47 PM

quote:
Originally posted by dern
quote:
Originally posted by stephen_gusterson
why not turn the diff over with one of the outputs static, and see how many input turns per output turn?
Because it's on ebay, in a car.

Some people are really helpful and will get the code when asked. One car I was going to bid on had an M code in the AXLE box (tow pack i'm guessing as it was a 2l auto with tow bar) but he withdrew the auction... maybe he did some research and figured out what it was worth.

Mark

JoelP - 10/2/05 at 10:17 PM

i think your right dern...