AMC 258 engine Questions
Thread Starter
Newbie
Joined: Nov 2011
Posts: 7
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From: Center Ossipee NH
Year: 1993
Model: Cherokee
Engine: '83 AMC 258
Ill start by saying im new here. I just bought a Jeep to play around with. Ive previously owned a 89 Cherokee pioneer and an 88 Wagoneer. What ive got now is a 93 Cherokee. I hope to start a build thread soon. Not a whole lot of money to throw at it currently. Ill go into better detail when i start the build thread. It has a 83 AMC 258 in it. I was hoping some one would have pictures of one in a cherokee so i could see how things should be. It looks like it was thrown in very quickly. Ill get a picture up tomorrow. Thanks for any help.
CF Veteran
Joined: Feb 2010
Posts: 5,420
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From: Soddy Daisy TN
Year: 97
Model: Cherokee
Engine: 4.0L
258 would have been a downgrade for a 93 model. Even if it came with a 4 banger you'd be better off without the carbed 4.2. Even with a Webber my YJ hates cold starts and hills.
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Thread Starter
Newbie
Joined: Nov 2011
Posts: 7
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From: Center Ossipee NH
Year: 1993
Model: Cherokee
Engine: '83 AMC 258
Sorry guys I dont get to much time on the computer.And currently can not upload pics to the forum. I already cleaned up most of the issues. The upper radiator hose was to pieces of hose and 2" black iron 90 with a temp gauge. So i replaced it with a stock hose witch fit fine. and found the stock temp sensor. PO had put a painless wire harness in(not that painless when you did not put it in) Cleaned that up. Next is what to do for air filter. PO cut a whole in the hood and was using some duct work for "cowl induction". Not 1st pick for a motor either but its what is there. Next question is witch wire feeds and witch returns from the fuel sending unit. Thanks
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Joined: Sep 2010
Posts: 34,088
Likes: 257
From: Lantana, Fl
Year: 1996
Model: Cherokee (XJ)
Engine: 4.Slow
Originally Posted by blue_on_blackXJ
You're gonna have a helluva time finding a picture of a 4.2 in an XJ. Must have been what the PO had sitting in his yard at the time.
Senior Member
Joined: Dec 2010
Posts: 726
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From: Leadville Co
Year: 2000
Model: Grand Cherokee
Engine: 4.7
Originally Posted by Outlaw Star
Hey now!, I have a 71 IH (AMC) 258 in mine with an 87 4.0 cylinder head. There's nothing wrong with the 258. It's a real durable motor not a lot of HP but more of a low end TQ motor.



