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Jeep Wrangler YJ
YJ General Discussion
Auto to manual swap?
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<blockquote data-quote="machoheadgames" data-source="post: 427307" data-attributes="member: 18789"><p>I really like the manual AX15 which is what all the manual 4.0L's came with. With a good clutch and properly working shift linkage, the whole setup just works really nice and smoothly. The 5 gears gives the 4.0 a lot of room to work with and you can gear the axles for power while really enjoying each gear and still be setup well for highway. The AX15 is still manufactured brand new in 2020, which is awesome for replacements and they are stronger by a little bit and shift better now than they did in the 90s. Especially if they are filled with a good fluid like Redline MT90 right from the beginning of their life.</p><p></p><p>The auto is a great transmission too, it's probably a better choice for really technical rock crawling, on the road I would say it works fine and it does, but will have a higher highway rpm (not such a big deal) but will feel a bit sluggish due to having only 3 gears to cover the spread. They are not still made new so you either have to find a replacement or get yours rebuilt somewhere you trust. Off road though the auto is definitely a better choice for really difficult trails, the manual serves little advantages there because it's just so much easier to focus with only two pedals and no chance of killing the engine when you really need it.</p><p></p><p>It will be a lot of work to swap, so it depends how badly you want it. The manual parts are pretty much all readily available so it can be done, you will need to do some wiring work in the neutral safety switch department, the rest is pretty simple, just a matter of collecting all the parts. If I had the auto, I probably would convert it, but I also don't really care about the $ cost and I just plain enjoy manual transmissions.</p></blockquote><p></p>
[QUOTE="machoheadgames, post: 427307, member: 18789"] I really like the manual AX15 which is what all the manual 4.0L's came with. With a good clutch and properly working shift linkage, the whole setup just works really nice and smoothly. The 5 gears gives the 4.0 a lot of room to work with and you can gear the axles for power while really enjoying each gear and still be setup well for highway. The AX15 is still manufactured brand new in 2020, which is awesome for replacements and they are stronger by a little bit and shift better now than they did in the 90s. Especially if they are filled with a good fluid like Redline MT90 right from the beginning of their life. The auto is a great transmission too, it's probably a better choice for really technical rock crawling, on the road I would say it works fine and it does, but will have a higher highway rpm (not such a big deal) but will feel a bit sluggish due to having only 3 gears to cover the spread. They are not still made new so you either have to find a replacement or get yours rebuilt somewhere you trust. Off road though the auto is definitely a better choice for really difficult trails, the manual serves little advantages there because it's just so much easier to focus with only two pedals and no chance of killing the engine when you really need it. It will be a lot of work to swap, so it depends how badly you want it. The manual parts are pretty much all readily available so it can be done, you will need to do some wiring work in the neutral safety switch department, the rest is pretty simple, just a matter of collecting all the parts. If I had the auto, I probably would convert it, but I also don't really care about the $ cost and I just plain enjoy manual transmissions. [/QUOTE]
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Jeep Wrangler YJ
YJ General Discussion
Auto to manual swap?
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