MiNi Beast Posted January 5, 2021 Share Posted January 5, 2021 all good. ive been swapping parts on mine for over 10 years now and it sat for a few years. that will never happen again. i believe neglect to be abuse. my poor baby. on the road again. Link to comment Share on other sites More sharing options...
Jesse J Posted January 5, 2021 Share Posted January 5, 2021 yeah 400 might come quick going to moab every other weekend Link to comment Share on other sites More sharing options...
89 MJ Posted January 18, 2021 Share Posted January 18, 2021 MJ #3 has 234,000 on it. Link to comment Share on other sites More sharing options...
jeepsouth Posted January 23, 2021 Share Posted January 23, 2021 (edited) I got 224,000 on mine. Owned it from 154,000. No issues with motor or ba-10 trans. Most reliable truck i've owned so far. Edited January 25, 2021 by jeepsouth Link to comment Share on other sites More sharing options...
Proama Posted January 30, 2021 Share Posted January 30, 2021 My 91 2wd 4.0 5-speed has 280,000 runs pretty well Link to comment Share on other sites More sharing options...
jeepsouth Posted January 31, 2021 Share Posted January 31, 2021 Nice! 2 hours ago, Proama said: My 91 2wd 4.0 5-speed has 280,000 runs pretty well Link to comment Share on other sites More sharing options...
bruce9 Posted February 1, 2021 Share Posted February 1, 2021 On 4/14/2019 at 12:29 PM, gogmorgo said: Well 498,400km on the first 4.0 in my first MJ before I pulled it puts me in the 300+ club, by just. I also added one for the ~270,000km that are now on the engine that replaced it (240,000 of which were accumulated by the XJ it came out of). I've also got 172,000km on the other MJ's original 2.5 when it came out, but it's death was due to neglect from the previous owner. Sometimes when your crusty old radiator is leaking, the fact it quit leaking on you doesn't have much to do with the stop-leak you were pouring in the top as quickly as the coolant was coming out, and more to do with there only being a finite amount of coolant in the system... My 87 MJ - 154K, My 90 XJ 252K, My 98 XJ 335K Link to comment Share on other sites More sharing options...
hbhp5 Posted February 26, 2021 Share Posted February 26, 2021 370k Link to comment Share on other sites More sharing options...
oleskool Posted October 4, 2021 Share Posted October 4, 2021 I just picked mine up and its sitting at 114k. Hoping to refurb it and make it my new DD. Link to comment Share on other sites More sharing options...
XJFOX Posted October 20, 2021 Share Posted October 20, 2021 1988 Comanche 4.0L 4x4 Manual 44~k miles on it Greetings from Puerto Rico! Link to comment Share on other sites More sharing options...
HellFighter55 Posted November 4, 2021 Share Posted November 4, 2021 175k on the 1986 Jeep Skamanche 4x4 with original [GM 2.8l v6 LR2] <- POS ENGINE [IMO] I hate the 2.8l v6 or it's the Varajet II Carburetor. Whatever power you thought you had is now gone at the ax5... It's perfect if you wanna do 35 mph on the main road. My 95 XJ had 390k on the engine before I bent 4 rods and flattened the cam and lifters. Currently sad that I have to rebuild the original motor. But it never blew the head gasket. So I am pretty impressed with the 4.0l H.O. engine. Guess you shouldn't pull 3/4 ton & 1 ton trucks. Now it has 390k on the Body with a built 4.6L L6/Ax15/Np231 SYE kit... and other add on's.... Link to comment Share on other sites More sharing options...
CornFed Posted November 4, 2021 Share Posted November 4, 2021 I've got 88k pretty well even on my 89. Link to comment Share on other sites More sharing options...
bobby mccallum Posted December 18, 2021 Share Posted December 18, 2021 1988 Comanche 4.0 268391 miles Link to comment Share on other sites More sharing options...
Clay Perrine Posted January 24, 2022 Share Posted January 24, 2022 I have 298000 on the original 4.0 engine. My father bought it new in 88. I drove him to the dealer to pick it up. Valve cover and pan have never been off the motor. I know it needs either a rebuild or a replacement, as I am running straight 50 weight and it still takes a few seconds for the oil pressure to come up in the morning. It has had a long hard life pulling trailers with very heavy vintage Chevys on them. Question, do I rebuild it with new bearings and rings, or do I just buy a rebuilt 4.0? Link to comment Share on other sites More sharing options...
Pete M Posted January 24, 2022 Author Share Posted January 24, 2022 54 minutes ago, Clay Perrine said: I have 298000 on the original 4.0 engine. My father bought it new in 88. I drove him to the dealer to pick it up. Valve cover and pan have never been off the motor. I know it needs either a rebuild or a replacement, as I am running straight 50 weight and it still takes a few seconds for the oil pressure to come up in the morning. It has had a long hard life pulling trailers with very heavy vintage Chevys on them. Question, do I rebuild it with new bearings and rings, or do I just buy a rebuilt 4.0? drainback valve leaking? Link to comment Share on other sites More sharing options...
lippetd Posted March 3, 2022 Share Posted March 3, 2022 My 1986 Comanche got a little over 90K out of the original 2.8l Chevy V6. (Threw a rod.) My replacement 3.4l has a little more than 75K on it. It is running strong, but it is time to ditch the crummy carburetor! Link to comment Share on other sites More sharing options...
Mgd13 Posted April 13, 2022 Share Posted April 13, 2022 150 Link to comment Share on other sites More sharing options...
Mgd13 Posted April 13, 2022 Share Posted April 13, 2022 On 4/14/2019 at 2:33 PM, Pete M said: partly playing with the poll feature, partly looking for a graph showing how the stock engines are doing. multiple choice answering is allowed for guys owning more than one. If your trucks both have 175k, then I don't know how to accommodate that Link to comment Share on other sites More sharing options...
Mgd13 Posted April 13, 2022 Share Posted April 13, 2022 Stock engine no combustion, water and oil mixing. Link to comment Share on other sites More sharing options...
MiNi Beast Posted April 14, 2022 Share Posted April 14, 2022 1 hour ago, Mgd13 said: Stock engine no combustion, water and oil mixing. What is blown head gasket? Alex, for $600 please. Link to comment Share on other sites More sharing options...
gvthnks Posted April 28, 2022 Share Posted April 28, 2022 171k on the stock 4.0. After sitting for 11 years, I pulled the engine and head to replace a dead lifter that just wouldn't pump up as well as all of the expansion plugs. Link to comment Share on other sites More sharing options...
pizzaman09 Posted May 12, 2022 Share Posted May 12, 2022 Purchased mine just recently, has 252k on the original engine. First owner put 237k on it in 16 years. Then it became a parts runner for the original selling Jeep dealer for 15 years getting few miles but probably beat on. Now I beat on it. 🙂 Link to comment Share on other sites More sharing options...
Classy Comanche Posted June 19, 2022 Share Posted June 19, 2022 177k original miles and growing strong. Bought on Halloween on 2020 from my grandfather because his vision is getting terrible and wanted it to go to a good home where he knew it'd be taken care of. When he does see it pull in the driveway. He always smiles. Been owned by him since '87 Link to comment Share on other sites More sharing options...
Otarn Posted July 13, 2022 Share Posted July 13, 2022 300000. Just replaced the rear main seal and pan gasket, runs perfect, used as a everyday work truck. But I’m retired and just work on a property I’m going to be building a new home. Link to comment Share on other sites More sharing options...
hassyfoto Posted September 5, 2022 Share Posted September 5, 2022 My 91 has 153,000 original miles on the 4.0 motor. Link to comment Share on other sites More sharing options...
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