EUREKA Posted August 21, 2020 Share Posted August 21, 2020 I have two MJ's. 1) 88 4.0, metric ton edition, column shift 2) 91 HO 4.0 pioneer edition, floor shift My goals is to build one MJ with all the features I want. HO 4.0 Dana 44 and metric ton springs Column shift Would it be easier to swap the rear axle, springs, bed, and column to the 91 from the 88, or to swap the HO 4.0 from the 91 to the 88? I understand there are multiple versions of the Renix to HO swap and I would want to do whatever version results in the best performance. I already have the bed off of the 91, and on a "dolly" I made to store / move the bed. Thanks in advance for the wisdom! Link to comment Share on other sites More sharing options...
trinity5007 Posted August 21, 2020 Share Posted August 21, 2020 Personally I would run the ho. And swap the parts over. You want. The columns are easy to swap over. I've changed mine twice. Electrical connections are the same on both. Link to comment Share on other sites More sharing options...
Pete M Posted August 21, 2020 Share Posted August 21, 2020 you should be able to swap things around and still have 2 MJs Link to comment Share on other sites More sharing options...
Eagle Posted August 21, 2020 Share Posted August 21, 2020 4 hours ago, Pete M said: you should be able to swap things around and still have 2 MJs ^^^ This. Just swap the axles. I would much rather just swap axles than get involved in swapping an engine, tranny and transfer case -- especially since the engine swap will also require a complete wiring harness swap. Link to comment Share on other sites More sharing options...
JustEmptyEveryPocket Posted August 21, 2020 Share Posted August 21, 2020 Have you evaluated the rust on each of them? Depending on what the end goal (daily driver? show car? rock bouncer?) is here, I would move whatever I wanted to the least rusty MJ, then move all the other parts over to the rusty MJ and sell that one. Recoup some money for future upgrades! Link to comment Share on other sites More sharing options...
EUREKA Posted August 21, 2020 Author Share Posted August 21, 2020 Thanks for the replies guys! I am convinced that swapping parts from the 88 to the 91 is the way I want to go. Neither of these MJ's have and significant rust. Link to comment Share on other sites More sharing options...
EUREKA Posted August 21, 2020 Author Share Posted August 21, 2020 13 hours ago, Pete M said: you should be able to swap things around and still have 2 MJs Absolutely. I have to decide if I want to spend my time doing that, or sell the the 88 as a project for someone else. I have some other goals for this year and would like to free up the space. It would be nice to continue owning two running Comanches but I also own a 64 el camino and we are starting a family in the next couple years, I can only own so many 2 seat vehicles. Link to comment Share on other sites More sharing options...
omega_rugal Posted August 21, 2020 Share Posted August 21, 2020 swaping the metric ton rear axle to the 91 is easy, also swaping columns, but whats the rear axle ratio? six+auto should be 3.55 but what about the metric ton axle? also MTs are supposed to have better front suspension and HD cooling too, amek sure to swap those also Link to comment Share on other sites More sharing options...
Pete M Posted August 21, 2020 Share Posted August 21, 2020 if both are 4.0/autos then they will both be 3.55. metric ton didn't change the factory ratio. Link to comment Share on other sites More sharing options...
EUREKA Posted August 22, 2020 Author Share Posted August 22, 2020 3 hours ago, omega_rugal said: swaping the metric ton rear axle to the 91 is easy, also swaping columns, but whats the rear axle ratio? six+auto should be 3.55 but what about the metric ton axle? also MTs are supposed to have better front suspension and HD cooling too, amek sure to swap those also I appreciate you thinking about these factors! Eventually I plan to re-gear the axles and install Eaton Detroit Truetrac soft lockers. I know they have a mixed reputation but I had them in both axles of my ZJ for over a decade and absolutely loved the way they perform in and off the road. I had heard that the front coils of the metric ton editions are stiffer. I will definitely be swapping those to the 91. The HD cooling is news to me. I'll make sure to check into that! The 91 came with an aftermarket aluminum radiator that looks like a major upgrade over stock. Link to comment Share on other sites More sharing options...
Pete M Posted August 22, 2020 Share Posted August 22, 2020 I want to say that "heavy duty cooling means getting an E-fan and a trans cooler if auto. but can't say for sure off the top of my head Link to comment Share on other sites More sharing options...
silvertwinkiehobo Posted August 22, 2020 Share Posted August 22, 2020 The e-fan is stock either way. Maveric's 88 MT has one, along with every other MJ/XJ I've encountered. The question of an aux trans cooler in the Metric Ton (since it has an auto) is a different story. But swapping the '88s goodies to the newer one would be the way to go. Link to comment Share on other sites More sharing options...
Pete M Posted August 22, 2020 Share Posted August 22, 2020 did those jeeps also have A/C? the e-fan came with various packages but wasn't standard issue for all Jeeps. Link to comment Share on other sites More sharing options...
EUREKA Posted August 22, 2020 Author Share Posted August 22, 2020 27 minutes ago, Pete M said: did those jeeps also have A/C? the e-fan came with various packages but wasn't standard issue for all Jeeps. Yep, both have factory AC. Link to comment Share on other sites More sharing options...
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