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Problems with 12 bolt and driveshaft mating!

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Old Nov 2, 2008 | 01:59 PM
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Default Problems with 12 bolt and driveshaft mating!

hey fellas I have a moser 12 bolt going in a 2002 Trans Am and I need to know why the stock u-joint straps and bolts will not work on the 12 bolt yoke.

i researched this a bit and it seems there is a u-joint conversion you must buy for it...i just want to make sure this is the fix for the car before i send my mechanic off to buy it (im in iraq)...thanks alot

mike
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Old Nov 2, 2008 | 02:01 PM
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part numbers and where i could find it would be super helpful! thanks
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Old Nov 2, 2008 | 03:57 PM
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ok we have identified the 1310/1350 converison from napa....we ordered it and now we just need to know how to bolt the DS up to the rear end....any help will be apprieciated!

anything at all lol
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Old Nov 2, 2008 | 04:22 PM
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Napa 447 is the part number if the rear has a 1350 yoke. The larger 1350 side will go to the Moser 12 bolt if the 12 bolt has the 1350 yoke on it. Bob
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Old Nov 2, 2008 | 04:38 PM
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hey bob i got the precision u joint from summit that is 1310/1350 conversion this is the same thing as far as im tracking right?.....the u joint doesnt seem to be the problem its bolting the driveshaft to the rear that is the problem...its like the stock parts wont work....do you have an im or cell i could call to talk about it today...im in iraq and comming home in 3 days and my car may not be done!

The stock ujoint straps dont work because the 12 bolt yoke is not tapped 2 accept bolts.---straight from my mechanic we need help!
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Old Nov 2, 2008 | 06:04 PM
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Neapco/pdq 3-3140
Brute Force 3-3140bf
Rockford K460
Spicer 5-460x
Precision 348
Napa 447



Features & Benefits
Combines two different driveline series.
Attributes
Bearing Type : Round Grooved & Round Plain
Ujoints Combined : 331 x 534G
Bearing Dimensions : Plain Diameter 1.188 ", Grooved Diameter 1.125 "
Contents : 1 U-Joint, 2 Inside & 2 Outside Lock Rings, 1 Grease Fitting
Driveline Series Combined : Spicer 1350 x Saginaw 44
Fitment Dimension : 3.62 " Over Plain Bearing Cups, 2.56 " Between Yoke Ears
Grease Fitting Location : Between Trunions

Warranty
Lifetime for original purchaser (less than 8,600 lbs., parts only)

The rear should of come with new retaining straps. Bob
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Old Nov 3, 2008 | 12:14 AM
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i bought the rear used so no retaining straps came with it...i found some online along with girdles ...any advantage to going with either?...im have yet to contact my mechanic and ask him if all it needs is new straps...but i just reread what he wrote me and he said the yoke on the 12bolt isnt tapped to accept bolts.....

that doesnt sound like a yoke i have ever seen before?...anyone experience this before?

maybe a new yoke is in order?

i will contact my mechanic and get further clarification on that..

thanks bob and anyone else have any thoughts?
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Old Nov 3, 2008 | 08:50 AM
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Yes, you will need new straps..... The straps that came with my moser had two bolts, with lock washers and nuts.... The stock stuff definitely wont work....
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Old Nov 3, 2008 | 09:27 AM
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ok straps are definatly needed...im looking into some girdles right now..only problem is i cant seem to find moser 12 bolt specific ones..any help would be apprieciated... 1350 u joint by the way
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