WahooSteeler Posted December 18, 2007 Share Posted December 18, 2007 So, just curious, how hard would it be to put an 05 4.0 out of a Rubicon in to an MJ? what other parts and expenses would be needed? http://www.jeepforum.com/forum/showthread.php?t=494407 Link to comment Share on other sites More sharing options...
JeepcoMJ Posted December 18, 2007 Share Posted December 18, 2007 So, just curious, how hard would it be to put an 05 4.0 out of a Rubicon in to an MJ? what other parts and expenses would be needed? http://www.jeepforum.com/forum/showthread.php?t=494407 engine, tranny, transfercase, and complete wiring harness would be needed Link to comment Share on other sites More sharing options...
dfreeman616 Posted December 18, 2007 Share Posted December 18, 2007 depends on what year mj for one thing. do you have a truck you want to do this to? if so, what year and drivetrain? if you're looking for a comanche to drop an 05 4.0 into, you could get a 91 or 92 mj and drop the engine directly in, you just might need to use the MJ's harness/intake/exhaust. Link to comment Share on other sites More sharing options...
CWLONGSHOT Posted December 18, 2007 Share Posted December 18, 2007 As dfreeman suggested, I would also want the most recent version of the MJ. Then it would need to have had a 4.0 with everything in good working order. I would remove the old engine and replace iith the new one. Then use the intake, system from the MJ and swap in the sencors (Temp, oil, oxygen etc) from the MJ as well. I am sure there would be a few kinks to work out but should be easy enough to do. Essentially what I am saying is use the MJ electronics and intake system on the new 2005 motor. Your tranny should bolt up and youll be off with a brandy new engine. CW Link to comment Share on other sites More sharing options...
JeepcoMJ Posted December 18, 2007 Share Posted December 18, 2007 am I wrong that the 05 4.0 is the newer style 4.0 (v-engine)? or was that 06 that they started in? Link to comment Share on other sites More sharing options...
Jeepman Posted December 18, 2007 Share Posted December 18, 2007 NO V6 untill 07 Link to comment Share on other sites More sharing options...
JeepcoMJ Posted December 18, 2007 Share Posted December 18, 2007 NO V6 untill 07 gotcha. I was reading up on it. someone did the swap into a 93 xj and kept the newer intake and such Link to comment Share on other sites More sharing options...
WahooSteeler Posted December 18, 2007 Author Share Posted December 18, 2007 As I said, mostly curious. Although she runs great w/211k, I'm always on the lookout if I fall across a super deal on a future replacement, even if I bought it now and stored it until the current motor dies or becomes a money pit. My current drivetrain: 88 4.0, a/t, p/t xfer case For some reason I thought this one had the tranny with it, but I know there was another late model 4'oh on jeepforum that DID have tranny AND xfer case, $950 for all or would sell separately, i think @100k Link to comment Share on other sites More sharing options...
Twisty Posted December 18, 2007 Share Posted December 18, 2007 So, just curious, how hard would it be to put an 05 4.0 out of a Rubicon in to an MJ? what other parts and expenses would be needed? http://www.jeepforum.com/forum/showthread.php?t=494407 engine, tranny, transfercase, and complete wiring harness would be needed So I'm just wondering...did the bolt pattern for the engine->transmission change? He would not be able to put a 93 AW4 on that engine? Link to comment Share on other sites More sharing options...
CWLONGSHOT Posted December 18, 2007 Share Posted December 18, 2007 am I wrong that the 05 4.0 is the newer style 4.0 (v-engine)? or was that 06 that they started in? The 4.0L Jeep engine is a I6 from start till last fart fired.... Are you thinking of the 3.7/3.8 V6 maybe?? The 3.7 is whats in the KJ libbys, and the 3.8 is in the new Wranglers. They are very good engines in its own right, but they are no 4.0 L. There where some changes thru its life. But as far as I know, all trannys that where ever on a 4.0, will fit any year other year 4.0. CW Link to comment Share on other sites More sharing options...
carnuck Posted December 18, 2007 Share Posted December 18, 2007 a few things changed on the front of the motor (water pump and intake) but the bell is the same. Sensors changed (on the trans and tcase as well as the engine) so watch out for that! Link to comment Share on other sites More sharing options...
JeepcoMJ Posted December 18, 2007 Share Posted December 18, 2007 yeah my first post I thought it was the V 4.0... them started in 07 05 will bolt to 93 Link to comment Share on other sites More sharing options...
WahooSteeler Posted December 18, 2007 Author Share Posted December 18, 2007 i think what CW is saying, there ain't no such thing as a Jeep V6 4.0, and to my knowledge, i believe that is correct. Link to comment Share on other sites More sharing options...
CWLONGSHOT Posted December 18, 2007 Share Posted December 18, 2007 i think what CW is saying, there ain't no such thing as a Jeep V6 4.0, and to my knowledge, i believe that is correct. RIGHT, at least not made by Jeep/Dodge... FORD on the other hand has a 4.0 V6 engine. CW Link to comment Share on other sites More sharing options...
WahooSteeler Posted December 18, 2007 Author Share Posted December 18, 2007 zactly. that's why i said "JEEP" 4.0. currently i believe you can still get a V6 one, like you said, in an explode (i hate that engine, just feels/sounds like crap....and weak), or a nissan pathfinder (love that engine, lotta @$$ and decent on gas!) Link to comment Share on other sites More sharing options...
GirsMJ86 Posted December 18, 2007 Share Posted December 18, 2007 Actually I believe there is a Dodge/Chrysler 4.0 V6... is that not what is in the Nitro? I know there was a rumor of a 4.0 V6 going into the JKs since the 3.8L or whatever it is gets ragged on pretty good. Don't blame em either since it is a minivan engine trying to haul a 4dr JK around... :eek: Alex Link to comment Share on other sites More sharing options...
fiscus Posted December 19, 2007 Share Posted December 19, 2007 I don't see how it could be much more complicated than swapping a OBD1 HO into a Renix electrical system. Just put the block & intake/exhaust in there and put EVERYTHING Renix on the new block, the only thing I am not 100% sure of switching from is the 2000+ don't have a distributor & spark plugs; can you put spark plugs in those holes? Yes, your aw4 will bolt right up but the newer intake requires you to use the newer kickdown on your "old" AW4. Here is an old write-up of a swap I did. http://www.terrainstompers.com/forum/viewtopic.php?t=14 Link to comment Share on other sites More sharing options...
carnuck Posted December 19, 2007 Share Posted December 19, 2007 They might not have a dist, but the hole is there (they cut the dist down to just a cam sensor) They DO have sparkplugs under each one of those coils! Link to comment Share on other sites More sharing options...
ComancheKid45 Posted December 19, 2007 Share Posted December 19, 2007 The new 4.0 V6 ive only seen in the new Minivans....it is out there though Link to comment Share on other sites More sharing options...
Oizarod115 Posted December 19, 2007 Share Posted December 19, 2007 it would be possible to use all you MJ stuff and just the block/head/internals on the engine, (someone mentioned different waterpumps but as long as the new one lines up with the serp. belt right it would be fine to use that one) and all the factory wiring. but it would also be possible to use the 05 harness and put a dist-less ignition in it and all that jazz Link to comment Share on other sites More sharing options...
CWLONGSHOT Posted December 20, 2007 Share Posted December 20, 2007 I don't see how it could be much more complicated than swapping a OBD1 HO into a Renix electrical system. Just put the block & intake/exhaust in there and put EVERYTHING Renix on the new block, the only thing I am not 100% sure of switching from is the 2000+ don't have a distributor & spark plugs; can you put spark plugs in those holes? Yes, your aw4 will bolt right up but the newer intake requires you to use the newer kickdown on your "old" AW4. Here is an old write-up of a swap I did. http://www.terrainstompers.com/forum/viewtopic.php?t=14 Dude, You are absolutely correct!! I totally spaced about the coil on plug change over for the 2000 year!!!!! That changes things to be sure!!!! CW Link to comment Share on other sites More sharing options...
Oizarod115 Posted December 20, 2007 Share Posted December 20, 2007 I don't see how it could be much more complicated than swapping a OBD1 HO into a Renix electrical system. Just put the block & intake/exhaust in there and put EVERYTHING Renix on the new block, the only thing I am not 100% sure of switching from is the 2000+ don't have a distributor & spark plugs; can you put spark plugs in those holes? Yes, your aw4 will bolt right up but the newer intake requires you to use the newer kickdown on your "old" AW4. Here is an old write-up of a swap I did. http://www.terrainstompers.com/forum/viewtopic.php?t=14 Dude, You are absolutely correct!! I totally spaced about the coil on plug change over for the 2000 year!!!!! That changes things to be sure!!!! CW my wrenchin/wheelin buddy has a 2001 motor in his 93 xj and it runs just fine, he had to put the disty in there and turn it til it ran right (adjusted by ear/feel) but his truck runs like a bat-outta-hell. so the disty-less ignition will work with a distributor in place in an OBD1 truck (so it would work in renix to most likely) Link to comment Share on other sites More sharing options...
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