redwolf624 Posted December 10, 2014 Share Posted December 10, 2014 so we all know i've been using junkyard 2,8 engines every time i destroy mine; well i'm starting to save up for a reman 2,8 (only because i can swap 2.8 to 2.8 in a day or two and i don't have a backup vehicle) but i'm lookin to project my MJ starting with the engine. i wanna get rid of the air cleaner and air box it like a TJ and i also wanna snorkel it when i but the TJ air box in, but how possible will that me? that's just the start of the project, next will be adding a dana 30 to the front and slappin a limited slip in the dana 35 in the rear if i don't swap it out to the ford 8.8, Redwolf Link to comment Share on other sites More sharing options...
Strokermjcomanche Posted December 10, 2014 Share Posted December 10, 2014 Save yourself and swap in a 3.4 out of a 94 Camaro . I learned that lesson after replacing the 2.8 twice with junkyard engines and after that a reman 2.8 in my 86 s-10 blazer . The blocks are the same and a direct bolt it . Link to comment Share on other sites More sharing options...
Pete M Posted December 10, 2014 Share Posted December 10, 2014 yeah, whether it's new or used, the 2.8 is a junk motor. the 3.4 is an updated and upgraded version. better in every way. :thumbsup: Link to comment Share on other sites More sharing options...
shelbyluvv Posted December 10, 2014 Share Posted December 10, 2014 He's been told to swap in a 3.4 out of a CamBird a thousand times. He refuses to listen. I even gave him several leads on 3.4s in his area because he said there were none to be had. You can't just slip a LSD into a D35. The clutches are in the carrier which are different for a LSD and a Non LSD. You will have to set the gears back up for the new carrier. At that point it is cheaper and easier to weld in the 8.8 I know I am wasting my time even suggesting anything to you though. Link to comment Share on other sites More sharing options...
Strokermjcomanche Posted December 10, 2014 Share Posted December 10, 2014 I've gotten to the point I only want to do a job once . Link to comment Share on other sites More sharing options...
redwolf624 Posted December 10, 2014 Author Share Posted December 10, 2014 Save yourself and swap in a 3.4 out of a 94 Camaro . I learned that lesson after replacing the 2.8 twice with junkyard engines and after that a reman 2.8 in my 86 s-10 blazer . The blocks are the same and a direct bolt it . yeah, whether it's new or used, the 2.8 is a junk motor. the 3.4 is an updated and upgraded version. better in every way. :thumbsup: He's been told to swap in a 3.4 out of a CamBird a thousand times. He refuses to listen. I even gave him several leads on 3.4s in his area because he said there were none to be had. You can't just slip a LSD into a D35. The clutches are in the carrier which are different for a LSD and a Non LSD. You will have to set the gears back up for the new carrier. At that point it is cheaper and easier to weld in the 8.8 I know I am wasting my time even suggesting anything to you though. yes i know about the 3.4 swap but i've also heard that it'll eat my ax5 trans, i'm trying to drop somethin in that's already been in, no changing anything cause i now have a 3.4 block with 2.8 parts. and as far as the limit slip swap, if it's just cheaper and easier to swap the dana 35 for the 8.8 i'll find a 8.8 with a limit slip, i've never swaped diff gears before, Redwolf Link to comment Share on other sites More sharing options...
Pete M Posted December 10, 2014 Share Posted December 10, 2014 how can it eat your trans if you're retaining the carb? the hp numbers will be close to stock. Link to comment Share on other sites More sharing options...
Strokermjcomanche Posted December 10, 2014 Share Posted December 10, 2014 You've already replaced how many 2.8s? How much money and time have you spent ? In the long run it's cheaper to do it right the first time . Were just trying to help . 10 years later and I'm still on the same 3.4 and trans . Link to comment Share on other sites More sharing options...
gogmorgo Posted December 11, 2014 Share Posted December 11, 2014 A transmission is cheaper and much easier to change than a motor... But then you're probably pretty good at pulling motors by now... Also you can usually limp home with a bad tranny. It takes a special kind of person to drive with a rod waving hello. Link to comment Share on other sites More sharing options...
gogmorgo Posted December 11, 2014 Share Posted December 11, 2014 And aren't you going to need to replace your tranny anyhow whenever you get around to converting to 4x4? Link to comment Share on other sites More sharing options...
87Warrior Posted December 11, 2014 Share Posted December 11, 2014 Don't bother with the TJ air box. It is the wrong size and shape to fit nicely under the hood. Find an air box out of ANY 4.0 XJ and bolt it in. XJ snorkel kits are designed to work with the 4.0 air box. You will have to figure out how to attach the intake to the carb. Link to comment Share on other sites More sharing options...
redwolf624 Posted December 12, 2014 Author Share Posted December 12, 2014 how can it eat your trans if you're retaining the carb? the hp numbers will be close to stock. well i was thinkin since it's a bigger engine maybe i could use a 4 barrel carb :dunno: A transmission is cheaper and much easier to change than a motor... But then you're probably pretty good at pulling motors by now... Also you can usually limp home with a bad tranny. It takes a special kind of person to drive with a rod waving hello. And aren't you going to need to replace your tranny anyhow whenever you get around to converting to 4x4? i'm decent at pullin motors by now, it takes me a day to strip them down and build them back if i start at 630 and good point Don't bother with the TJ air box. It is the wrong size and shape to fit nicely under the hood. Find an air box out of ANY 4.0 XJ and bolt it in. XJ snorkel kits are designed to work with the 4.0 air box. You will have to figure out how to attach the intake to the carb. ok, but i've noticed on later model MJs the XJ air box is where my washer fluid and coolant overflow tanks are, if i was to swap a XJ air box in would i have to move the tanks? Redwolf Link to comment Share on other sites More sharing options...
Pete M Posted December 12, 2014 Share Posted December 12, 2014 in theory you could use a small 4barrel, but a 3.4 engine isn't huge. it's just a tad bigger than the 2.8. a quality 2 barrel will work great with it. :thumbsup: a carb that's too big is just as bad as a carb that's too small. Link to comment Share on other sites More sharing options...
redwolf624 Posted December 12, 2014 Author Share Posted December 12, 2014 in theory you could use a small 4barrel, but a 3.4 engine isn't huge. it's just a tad bigger than the 2.8. a quality 2 barrel will work great with it. :thumbsup: a carb that's too big is just as bad as a carb that's too small. glad to know that now before i ended up buying a holly 4 barrel but since we're on the topic of carbs now i gotta question, i do wanna get away from my stock rotchester carb and go different but i've been told if i put a webber or a carter on a GM engine it'll run bad, how is that possible? Redwolf Link to comment Share on other sites More sharing options...
Pete M Posted December 12, 2014 Share Posted December 12, 2014 I doubt it's that simple. a carb is a carb is a carb. as long as it is the proper size and the linkages can be hooked up, it'll work fine. my suggestion is the do the engine swap first, then worry about changing carbs. too many changes all at once can compound troubles and make it even harder to diagnose any issues. keep in mind that the bolt patterns between carbs are different and an adapter plate may be necessary. Link to comment Share on other sites More sharing options...
redwolf624 Posted December 13, 2014 Author Share Posted December 13, 2014 I doubt it's that simple. a carb is a carb is a carb. as long as it is the proper size and the linkages can be hooked up, it'll work fine. my suggestion is the do the engine swap first, then worry about changing carbs. too many changes all at once can compound troubles and make it even harder to diagnose any issues. keep in mind that the bolt patterns between carbs are different and an adapter plate may be necessary. i have noticed that in my search for a new carb for my MJ, but if i have a bad carb to begin with wouldn't swappin engines and puttin a bad carb on it still cause issues? that's why i'm lookin at doin both at once, Redwolf Link to comment Share on other sites More sharing options...
Pete M Posted December 13, 2014 Share Posted December 13, 2014 fair enough. just be sure to read up on the 3.4/3.1 swap so you don't miss anything. :thumbsup: Link to comment Share on other sites More sharing options...
redwolf624 Posted December 14, 2014 Author Share Posted December 14, 2014 fair enough. just be sure to read up on the 3.4/3.1 swap so you don't miss anything. :thumbsup: pete. how many threads have i started where someone has stated a full detail 3.4 swap lol, besides, i just capped off 80% of my vaccum lines and i have just a much power as a 3.4 right now. but on a different note, a 4.0 swap will come in time, i just gotta get this one running long enough to get another jeep (that'll be my new daily driver) and have my 86 as a toy :cheers: Redwolf Link to comment Share on other sites More sharing options...
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