Nate C

Fantastic info as always! Eagle thanks for explaining the chart / comparing to stock 4.0L. I will track down a 33T speedo gear too. Ok - now I just have to choose some tires and wheels. Any thoughts? basically all street, I like the aggressive look of BF AT's but am ready for something different.

I know this subject has been beaten to death, from reading posts I'm pretty sure I can do what I intend but would like some thoughts/opinions of how it will change the performance and feel of the truck. So here is what I have: originally 87 2.5L with four speed manual shift which means I have 3.55 gears yes? I have since dropped a rebuilt 4.0L in it and put a BA 10/5 with T-case in from a doner. I also have a 1" coil spacer in the front and shackles in the back. I currently run 30" BF AT's on the original wheels. Here is what I want to do: I'd like to get 15x8" wheels and install 31" tires. Right now I'm happy with how it accelerates and I can put it in 5th gear around 50 mph without any bogging. I don't do any wheeling it's just a street / look pretty truck. The questions: Should I get a wheel spacer for this new setup? How will acceleration and 5th gear be effected? what adapter should i get to compensate for the speedo? I've seen the chart Eagle posted, but I'm not really sure what I'm looking at. Can my gears and old tranny handle the 31's I know the motor can, and I should have enough clearance in the wheel wells with the 1" lift. I don't think I'll ever go bigger than 31" I've wanted to do this for 6 years since the rebuild but other things have been sucking up my money and time. If anyone can think anything else that could be an issue please let me know.

Great tips thanks!, I'll tackle it tomorrow; I need a break from working on it. I need to post some updated pics - haven't been on here much since the re-build in 09'

Anyone know the torque specs for putting one of these back on? Any tips for installing one? I have the puller tool can that also be used to re-install?

From the 1991 FSM: "Timing cover: 62 in-lbs. Oil pan: 7 ft-lbs for small bolts and 11 ft-lbs for large bolts Valve cover: 55 in-lbs. As long as you don't rotate the engine without the timing chain installed the timing will not change. I would strongly recommend getting a harmonic balancer installation tool to install the new HB (or a longer 1/2-20 bolt). Don't use the crank bolt to pull it on or you run the risk of wiping the threads from the crankshaft snout, crank bolt or both. Otherwise it's a simple R&R job. Torque spec is 80 ft-lbs for the crank bolt. Are you also replacing the timing chain? If not it might be a good "while you're in there" thing." *** I'm in the middle of it right now,.... do you know the torque for the water pump and other pullies? Picked up some new may as swap those out while I'm in there. ***

Awesome! thanks, dropped a new/rebuilt motor in it 5 years ago so the timing chain is good to go. Should have replaced the chain cover and that doughnut gasket back then. I think that's where my problem is. I'll head to Auto Zone in the morning to grab that tool, Ha yeah I just picked up an inch pound wrench for this job, should come in handy.

Anyone know torque specs on the following: Timing chain cover Oil Pan valve cover Got some fel-pro gaskets and hope to get these installed this weekend. I think the Valve cover is 55 inch pounds,... Also replacing the harmonic balancer and chain cover, I'll get the puller tool for the balancer. Anything special I need to know or look out for on this job? I'm not going to mess up the timing am I?

Checked out the vent lines and air box, looks clean; I like the idea of bigger lines though,.... looks like i'm doing some gasket replacing this weekend. You live in an awesome part of the country, you're lucky. I miss my time out West. Cool you're a real Native! My Great Grandma was half Abnaki, The State recognizes the tribe but the Feds don't - total BS. they played a huge roll in Northeast history. There are a few people of the Iroquois confederacy here too, but they're mostly in New York.

Thanks for the tips, where are the vent lines I'm looking for? Where in Montana are you? I spent some time in Bozeman when I was younger - fun town!

I have a leak that appears to be coming from the front of the oil pan, what beside that would cause a leak in the front? Oil pump gasket maybe? The straight 6 looks like it slants to the back, so most leaks would accumulate there,.... this is clearly dripping up front though. I don't want to tear into the pan gasket to discover it's something else. Any thoughts/ ideas are appreciated.

I seem to have lost all my older posts and pics, is there an archive I can retive them from?

Wow, that will keep me busy for a while, thanks the detailed writeup!

Hi all, I'm having problems with my MJ reving real high on start up. I've checked and lubbed the throtle cable and all other connections, I've also sprayed the air intake/butterfly valve with air intake cleaner. No luck as of yet, I can get it to stop if I shut it down then re-start, but that does not work every time. Also I can't get my 4x4 light to shut off, I know the 4wheel drive is not engaged because I don't feel the tugging in tight turns. Whats weird is if I let the engine bog a bit before down shifting the light will turn off for a second or two?? Any advice is appreciated.

Thanks for the offer, it sounds like a good deal, unfortunately I've got a short bed to.