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05-02-2009, 08:40 PM
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#1 |
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Registered User
Join Date: Aug 2008
Location: Schererville, IN
Posts: 110
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I have a 12 bolt rear
Today I counted the bolts on my rear diff.. it's a 12 bolt. Is that something special? I KNOW it is not posi.. can I convert it to posi, or would it be best to buy a positraction rear end and swap it?
__________________
2004 VW R32 450 HP money pit (faster than a Viper in the 1320  )2001.5 VW Passat beater 1972 Custom Deluxe Highlander 69k miles and counting, all original, even the paint
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05-02-2009, 08:47 PM
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#2 |
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Registered User
Join Date: Oct 2007
Location: Fort Smith,AR
Posts: 1,305
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Re: I have a 12 bolt rear
Yea, you can just buy a posi unit for it.
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05-02-2009, 10:47 PM
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#3 |
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Registered User
Join Date: Aug 2008
Location: Schererville, IN
Posts: 110
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Re: I have a 12 bolt rear
thanks for the reply.
I don't know what ratio I have, so I jacked up the rear and turned the driveshaft by hand, but I only get about 1 and 1/2 turns from the driveshaft for one complete tire rotation.. I get the feeling that I need to multiply that by 2, so I assume I have a 3.08:1?
__________________
2004 VW R32 450 HP money pit (faster than a Viper in the 1320 )2001.5 VW Passat beater 1972 Custom Deluxe Highlander 69k miles and counting, all original, even the paint
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05-03-2009, 12:59 AM
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#4 |
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Registered User
 Join Date: Dec 2007
Location: Modesto, Ca
Posts: 411
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Re: I have a 12 bolt rear
Pull the cover off and have a look. The numbers you are looking for are stamped on the ring itself. For example 38:10. This would be a 3.80 ratio. Now that you're this far, you might as well pull the axles and put in that posi!
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05-03-2009, 09:13 AM
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#5 |
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Senior Member
Join Date: Feb 2008
Location: Denver, CO
Posts: 252
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Re: I have a 12 bolt rear
If you will look on the forward side of the passenger side of your rear axle, you will find a (3) digit code. It will be (3) capital letters. Once you have that code, go to this link and then "Axel Codes". It will tell your what your differential is. A lot easier than pulling the cover and counting teeth.
http://www.americanclassic.com/paint_test.asp |
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05-03-2009, 09:29 AM
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#6 | |||
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just can't cover up my redneck
Join Date: May 2004
Location: Columbus OH
Posts: 11,414
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Re: I have a 12 bolt rear
Quote:
Quote:
__________________
You can review the site's rules here. Quote:
Bad planning on your part does not necessarily constitute an instant emergency on my part.... The great thing about being a pessimist is that you are either pleasantly surprised or right. 
Last edited by LONGHAIR; 05-03-2009 at 09:31 AM. |
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