NAXJA Forums -::- North American XJ Association  

Go Back   NAXJA Forums -::- North American XJ Association > NAXJA Unibody Jeep Technical Forums > Jeep Grand Cherokee > ZJ and WJ Grand Cherokees (1993 - 2004)
HOME Member FAQ Sponsor Info Rules Bylaws E-Mail

ZJ and WJ Grand Cherokees (1993 - 2004) Technical forum for the classic ZJ and WJ Grand Cherokees.

Thread Tools Display Modes
Prev Previous Post   Next Post Next
Old May 2nd, 2022, 17:07
Hexagone Hexagone is offline
NAXJA Forum User
Join Date: May 2022
Location: Idaho
Posts: 2
04 WJ cylinder head question

I have a 0331 head that was pulled from an 04 WJ. I am confused because all the searching I've done said the 0331 was redesigned sometime in 02 and should have the TUPY stamp under the oil fill cap. This head does not have the TUPY markings. Was a good 0331 ever cast without the markings? Does this mean the head is one of the heads prone to cracking? Possibly already replaced? Any way to identify the maker of the head if it isn't OEM? There was a pretty comprehensive thread on jeep strokers? I think was the website at least. That thread didn't really get me anywhere and almost made me more confused as to what I have. Just looking for any help or a point in the right direction. Thanks.
Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Display Modes

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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Cylinder head question on an 02' Laredo Sandydog OEM Tech Discussion 2 January 10th, 2012 05:46
Replacement Cylinder Head Question pajeepman OEM Tech Discussion 17 January 14th, 2010 14:00
'99 cylinder head question mrtosh OEM Tech Discussion 6 January 5th, 2010 15:41
Is there a replacement head comparable to Alabama Cylinder Head? Emerscape OEM Tech Discussion 42 October 19th, 2009 10:10
Cylinder head install, one more question Ron Hyslop OEM Tech Discussion 11 October 8th, 2005 06:29

All times are GMT -7. The time now is 19:01.

Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2022, vBulletin Solutions, Inc.
NAXJA and NAXJA logo's Copyright NAXJA. All content/images Copyright NAXJA 1999-2014