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Old 04-30-2013, 04:51 PM   #1 (permalink)
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21/23 spline??

Rookie question...,

89 xj with 4.0 automatic. It has a 231j t-case. What spline count do I likely have 23 or 21? Are all automatics one type?

And, just so I have this right...we are talking about the transmission input on the t-case, right? We are not talking about the number of splines on the t-case rear output, right?

I need an SYE kit or a 231 with one already installed. This chain I'm betting is worn.

Thanks
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Old 04-30-2013, 05:44 PM   #2 (permalink)
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21 spline on the Renix era AW4s.
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Old 04-30-2013, 05:47 PM   #3 (permalink)
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Yes, the transmission output/transfercase input will be 21 spline for you.
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Old 04-30-2013, 09:03 PM   #4 (permalink)
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Thanks guys. Is a 1993 truck the same as 1989. I just learned the Chereokee is 1993...?
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Old 04-30-2013, 09:35 PM   #5 (permalink)
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I got bounced to "non hardcore". Haaaa... Well can anyone tell me the answer to this question:

1993 xj 4.0 automatic....what spline count is my np 231 input?
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Old 04-30-2013, 10:07 PM   #6 (permalink)
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1991' is the split. all pre 91' are 21 spline all post 91' are 23
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Old 04-30-2013, 11:18 PM   #7 (permalink)
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Thank you!!
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