258 6 Cylinder Question. - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > CJ Jeep Forum > CJ Tech Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 11-20-2014, 07:28 PM
Thread Starter
  #1
Newb
 
Join Date: Oct 2014
Posts: 10
258 6 Cylinder Question.

Can someone tell me if all in line 258 6 cylinder 4.2 engines are the same. My 258 blew a head gasket and wound up with a cracked head. I've got a chance to buy a newer 258 with 89.000 miles for $200. I just want to make sure it will fit in my 1980 CJ7. I believe the newer 258 is a 87 year. Any advice will be greatly appreciated.

Gatorflea2 is offline   Quote
Old 11-21-2014, 05:29 AM   #2
Newb
 
MemphisCJ's Avatar
 
Join Date: Aug 2014
Posts: 9
From 72 to 1990 yes

MemphisCJ is offline   Quote
Old 11-21-2014, 07:40 AM
Thread Starter
  #3
Newb
 
Join Date: Oct 2014
Posts: 10
Thank you very much!
Gatorflea2 is offline   Quote
Sponsored Links
Advertisement
 
Old 11-29-2014, 06:39 AM   #4
Jeeper
 
roadyrob's Avatar
 
Join Date: Apr 2012
Location: west palm fla
Posts: 1,272
there are a few differences, mostly in the head. head bolt size changed, different valve cover. the 87 could be serpentene belt, they made both that year. intake manifold is different.
__________________
1987, 4,2, rebuilt, head casting cleaned up, port matched and milled-9.5 compression, hotter cam holley 4 bbl
roadyrob is offline   Quote
Old 11-29-2014, 08:23 PM   #5
Jeeper
 
ChelanYJ's Avatar
 
Join Date: Jun 2013
Location: Back to Washington.
Posts: 155
I loved my 89' 4.2 motor. Mine had a rebuilt 2bl. Carter carb. that worked great, but that's not the norm. If your 4.2 in 87' has the Carter 2bl. You should do a search for a motorcraft or weber. Lots of info. in the YJ section, or use the search tool! Good luck, with your swap.
__________________
"I believe that the 'Jeep Thing' occurs in a person when they make the life change from Jeep ownership to Jeep partnership".

Get ready, Jesus is coming soon! He loves you, do you love Him?
ChelanYJ is offline   Quote
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off






All times are GMT -5. The time now is 06:21 PM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.1
User Alert System provided by Advanced User Tagging v3.1.0 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.

Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC