Posts by YJpotter91

Do I have to hone cylinders if I replace piston rings?
I was talking to my dad yesterday and he said “I can’t believe you’re that far into the motor and you’re not gonna pull the pistons.” So I said fine, I’ll pull em. What he didn’t know is I already installed the new crank. What I didn’t know (it’s my first time doing this) is that it’s strongly recommended to hone the cylinders when replacing rings.
where I’m at now is
A) pull the crank and bearings, hone cylinders and replace rings
B) replace rings and hope for the best
C) just put the pistons back in
Regarding option C as far as I know it’s a reman motor with 64k miles. I know a reman doesn’t mean everything was replaced but it’s bored .040 over so rings we’re obviously replaced. Also I cleaned the head and lapped the valves and the valves didn’t have excessive carbon which correct me if I’m wrong but I’m pretty sure is a good sign the motor didn’t smoke? So that would mean the rings are probably fine?
I know option A is the safest bet but I’m kinda leaning towards C
Thoughts?

Paid $165 for this steering wheel. It’s installed in my YJ right now but it’s still practically brand new. The only reason I’m getting rid of it is because after the adapter and the offset of the steering wheel, the wheel is just a little closer to me than I like. I’d sell it for maybe $120. If you’re interested I can leave it installed and you come see if you have the same problem with it that I do. Also, I need to find another wheel before I can let this one go. Knowing this one is sold and that I have some funds to cover a replacement will speed that process up though

As the title says I’m looking for a spice steering wheel in decent condition. Also need any parts that go in between the slotted metal plate that’s held down with a snap ring and the steering wheel

Well, I’ve gone further than I wanted. When replacing rear main seal I noticed the bearing was worn to copper. So I pulled another cap and another and another. All main and rod bearings are worn to copper. Local Napa recently closed their machine shop and I don’t like the other place that’s around so I ordered a reman crank and bearings from rock auto for $212. Cleaned the head, lapped valves and replaced seals... same machine shop I don’t care for said it was gonna be at least $350 for them to do that!
Not sure why the bearings were so worn though. I was told the motor only had ~65k miles or something like that. I’m inclined to believe them too because it’s a reman.. pistons .040 over, bearings .010 under and after cleaning the block some I can tell it’s been painted gray maybe as if it’s a jasper
Hopefully everything else goes smooth

Thanks guys. I’ve got it all sealed up and it seems to be fine

Yea I don’t think he necessarily meant it’s supposed to do that, just that he knew the problem existed

Was changing the valve cover gasket on a 4.2 and when I removed the front of the two bolts on the intake side, coolant came out of the hole. Anyone seen this before? Head gasket? Cracked head? The guy who owned it before me said it’s always done it and just put some rtv on the threads for that bolt. There’s no coolant in my oil so that’s good

Good to know about the fans. I read a couple good things about ffdynamics.com I’ll make sure to have all the knowledge I can before pulling the trigger on something like that though

Another think I was considering doing is header, cold air intake, and high flow exhaust. From what I’m reading none of these do much by themselves but combining the three shows a slight increase in hp and mpg. Anyone have any experience there?

Hey everyone I’m Matt. I’ve popped on and off of here for years now. I’ve been driving Jeeps since I got my license 17 years ago. Currently I have an 88 YJ that once belonged to a friend of mine who has since passed so it is very special to me. I also have a 96 XJ and an 89 MJ that I’m trying to get straightened out to either sell it or the XJ (or both )
I normally come here with questions and feel like it’s not fair to come get what I need and disappear again so I figured I could at least say hi to everyone. You guys have been a huge help over the years as I still have a ton to learn. Hopefully someday I’ll be the one helping out the new guy with knowledge

Quote from astape

my advice is to do nothing. Its basically an old tech forklift motor. It works great if u leave it alone. If u were gonna reman i would put a slight cam and mustang injectors in but thats because its fresh.

Do nothing? That sounds easy! I have no plans of going into the bottom end unless it’s necessary. So far the only thing I plan on doing is converting to an electric fan. That’s not necessarily a “the motors on a stand so take care of it now” type of thing though, I’ll probably do that during the engine swap

I bought a motorcraft from ehrmannmp on eBay a few years back. Quite an upgrade from the Carter. His kit includes an adapter plate and the proper linkage, detailed instructions.. everything you’ll possibly need

Maybe rebuilding isn’t the right word but I picked up a 4.0 out of a 95 yj. It will be replacing the 4.2 in my 88
My 4.2 runs so I’m in no rush. My plan is to pull the head and see how it looks inside, reseal everything, clean it up and maybe paint it
What I’m looking for is any recommendations on upgrades/improvements/preventive maintenance while I have the motor out and am in no rush. I’m looking online and I’m pretty much overwhelmed with the information and opinions that are available
Any input will be much appreciated. Thanks
Matt

I will go back over what I’ve done already and check the things you guys have suggested. When I’ll be able to do that is the big question. The Jeep is at my dads which is only 20 mins away but round trip mean I need to find 40 extra minutes of free time. Hard to do with a 4 year old

I’ve cleaned grounds, replaced IAC, looked for vacuum leaks I’m not finding anything. Pretty sure it has an ax15 but I’d have to crawl under to confirm. Been a couple years since I’ve been under it

I’ve cleaned grounds, replaced IAC, looked for vacuum leaks I’m not finding anything. Pretty sure it has an ax15 but I’d have to crawl under to confirm. Been a couple years since I’ve been under it

I did not realize I said yj. I have a yj and have been focused on it a lot lately. It’s the Comanche in the picture

That’s the problem, without taking covers off I don’t know gear ratios, the lift is done right from what I can tell. The floors aren’t completely gone they’re just starting to go. They’re still salvageable with some sheet metal and basic welding skills. I was thinking if I could get the idle thing figured out and get it tagged it’s worth $3k but that’s a total guess. I’m unfamiliar with the Comanche market

Just looking for some input on what this thing might be worth.
89 comanche 4.0 manual transmission
About 118k miles
It’s showing it’s age. Clear coat peeling, floors rotting out
Idles high when it starts warming up
Spring over lift and not sure how much suspension
35s with good tread

Thanks Slimer. I’m in Dover