Sye kits and Ford 9" Ujoints -
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post #1 of 3 Old 06-02-2020, 03:48 PM Thread Starter
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1993 YJ Wrangler 
Join Date: May 2020
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Sye kits and Ford 9" Ujoints

I'm researching parts for the rear. The SYE kit came on the tcase, and I don't know what brand it is, but I believe is a 1310 ujoint. The rear has a bigger yolk. For my swap, I've had it in the back of my mind that I'd be using some sort of off the shelf CV drive line. Now I need to determine the best way to fix the different sizes. My first thought was change the yolk on the SYE to match the Ford, which I think may be a 1330 bigcap(?), but are those available for an unknown SYE kit? I know my kit is not an Advance Adapters piece (and I was told their yolks are for their kits or it's too much preload on the bearing), so maybe I should change the yolk on the rear to 1310, being that I need to order parts for the rear anyway? I've been looking at 3rd member assys, but I didn't pay attention to yolk sizes at the time and need to go check a couple to find the options. Last, I don't think I want to have mismatched ujoints on the drive line do I?

What's the best solution for this set up?

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post #2 of 3 Old 06-02-2020, 04:28 PM
Duck Doctor
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You don’t need the same Size ujoints On both ends of the driveshaft. My Atlas transfer case uses a 1310 joint and the old D35 was 1330 from the factory. Ditched the D35 and used a 1330 to 1310 conversion joint.
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post #3 of 3 Old 06-02-2020, 05:31 PM Thread Starter
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Location: Sonora
Posts: 71
You are correct DD. I spoke with a shop that has built drive lines for me in the past and he says he makes drive lines with different size ujoints all the time. That makes things easier.
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