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post #1 of (permalink) Old 11-04-2000, 12:15 PM
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np 228

My 86 Wagoneer viscous coupler is giving up, coupler no longer available from MOPAR. Is a 229 a direct swap,
or is there a aftermarket vendor of the coupler? thanks.

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post #2 of (permalink) Old 11-16-2000, 09:41 AM
 
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Re: np 228

Yes the 229 will bolt right up, but why? Another 228 would be a better solution, and a 208 might be even better still. Dont quote me on this but a '90-on-up NP-231, or 242 should also bolt up (although you might have to make new linkages to shift them). Most (maybe all?) New Process (now called New Venture) 'cases use the "standard" 6-bolt circular pattern...

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post #3 of (permalink) Old 11-16-2000, 09:42 AM
 
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Re: np 228

Yes the 229 will bolt right up, but why? Another 228 would be a better solution, and a 208 might be even better still. Dont quote me on this but a '90-on-up NP-231, or 242 should also bolt up (although you might have to make new linkages to shift them). Most (maybe all?) New Process (now called New Venture) 'cases use the "standard" 6-bolt circular pattern...
Check out my post on Using lockers with a Q-Track 'case. We shifted the topic over to "what will bolt up to a TF-727" towards the end...

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post #4 of (permalink) Old 06-15-2001, 12:21 AM
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Re: np 228

The New Process 228 is equipped with a differential. The NP 229 is equipped with a viscous coupler. The 228 is considerably more reliable. Keep it. The differential IS available aftermarket. The 231 and 242 will NOT interchange, as the input shaft is too small for the transmission output shaft. Contact M.S.I. Salvage at (907)452-2695 to purchase a NEW differential. Hope it helps!

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post #5 of (permalink) Old 06-18-2001, 08:00 PM
 
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Re: np 228

The 231 and 232 also use a 23-spline input shaft (except pre-90 'cases behind manual trans) and have a 6-lug circular pattern. They will bolt up, buy you'll have a slip-yoke in the rear. A 208 is probably the best option (I replaced my NP231 with an NP208

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