10 posts - 4 authors - Last post: Nov 5, 2006It seems as if no one here has heard about the 0331 head castings and their propensity to crack. I Believe the 01 TJ and every other 99+ 4.0 .

Nov 5, 2010 – I recently found out that my 96 XJ has a cracked head and .

7 posts - 3 authors - Last post: Jun 130331 Head replacement Tech Section. . '00-'01 XJ '99-'04 WJ '00-'06 TJ are direct fit '99+ have the newer intake manifolds too = more HP .

39 posts - 28 authors - Last post: Nov 21, 2010That was the first year for the 0331 head which had casting problems . . In '00 Chrysler switched to the TJs low-pinion which was still .

4.0L L6 JEEP CYLINDER HEAD GASKET 01. Suites: 2001 WRANGLER TJ. CASTING 0331 ONLY VIN S Head bolts not incl.; Head bolt replacement recommended; .

10 posts - 8 authors - Last post: Feb 140331 head OEM Tech Discussion. . Anyone had their 0331 head crack and .

Jan 28, 2011 – Hey, have a 98 4.0 in my tj and am thinking it might have the notorious cracked . I don't think the 0331 head came out until 99 or 2000. .

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Mar 22, 2011 – I have had little luck in the San Diego area finding a head .

9 posts - 6 authors - Last post: Feb 4, 2010The 0331 head was put into the XJ in 2000, the WJ in 1999 and the TJ in 2000. Not 100% sure on the TJ part there. .

ATk Replacement 4.0L I-6 Engine for 99-06 Jeep® Wrangler TJ, TJ Unlimited & Grand Cherokee WJ - . Left Head Cast #0331. 2. Block Cast #27AB / 28AB. .

15 posts - 6 authors - Last post: Mar 14, 2007My XJ has the 0630 head so I guess I'm good there but my 01 has the 0331 .

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15 posts - 8 authors - Last post: Apr 5, 2010The 0331 head was only used 00-01 in Cherokees, and mine is an early 99, but .

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18 posts - 7 authorsHave you changed the cylinder head yet? The 0331 cast model on the 2001 TJ's are well prone to cracking (it's basically just a matter of time - I did mine .

12 posts - 7 authors - Last post: Aug 27, 2010Newer 0331 head from 06 Wrangler SoCal For Sale. . question switching from 0331 xj head to 0630 tj head, jonnyz123 .

7 posts - 6 authors - Last post: Oct 15, 2006head gasket, and mentioned that "sometimes these have a cracked head . . I would suspect the head is cracked, not the gasket blown, the 0331 head . '91 Grand Wagoneer, '99 TJ. > I would suspect the head is cracked, .

4 posts - 3 authors - Last post: Feb 21, 2009I am trying to find out a couple of things. Does the 02-06 TJ have the 0331 head ? Does it has have the distributorless set up with the coil .

0331 head casting, 3 best. 0331 head problems, (alt.) 0331 head replacement, ( alt.) 0331 head grand cherokee, (alt.) 0331 head years, (alt.) 0331 head tj .

10 posts - 8 authors - Last post: Jun 29here's mine from a tj it lasted roughly kms about mi it was a difficult find because the . my 1999 XJ should NOT have an 0331 head, right? .

8 posts - 4 authors - Last post: 3 days agoTUPY revised 0331 head - Done, ported and polished - In Progress . decided that I would be fine with building an MJ instead if a TJ. .

9 posts - 8 authors - Last post: Jul 2, 2010The '99 and later HO heads with casting no.0331 have smaller exhaust ports to . . Other than the tj,yj, classification im now confused. .

40 posts - 16 authors - Last post: Jul 13, 2010I had a TJ before, would not buy another - but an LJ is mighty . . Google 0331 head. Common problem in the 1999 and newer 4.0 Jeeps. .

Feb 10, 2010 – . have a 2000 tj with a cracked head, ordered a head off of ebay that was supposed to be a . Reload this Page 0630 head swap for 0331 .

1 post - 1 author - Last post: Oct 8, 20100331 Head question. jeepman121, OEM Tech Discussion, 8, 02-04-2010 12:23 .

the site, want to say Hello, I need some help, have a 2000 tj with a cracked head, ordered a head off of ebay that was 0630 for a 0331 cylinder head .

7 posts - 5 authors - Last post: Jul 22, 2010question switching from 0331 xj head to 0630 tj head, jonnyz123, Modified .

Mar 10, 2011 – I've noticed this with my 2000 TJ as well. .

9 posts - 6 authors - Last post: Feb 4, 2010The 0331 head was put into the XJ in 2000, the WJ in 1999 and the TJ in 2000 .

Feb 25, 2011 – as above get non 0331 head or one from 03-06 4.0 (TJ, WJ .

3 posts - 2 authors - Last post: Feb 20, 2009Has anyone else had this problem with 00-01 4.0L 0331 heads? . brough up that this is a common problem among 00-01 XJ, TJ, WJ Jeeps. .

21 posts - 9 authors - Last post: Jun 162001 TJ 4.0 78000 miles. I put water in it and in about 2 months I have to put . . Isn't that the year of the infamous 0331 head casting? .

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15 posts - 8 authors - Last post: Mar 14, 2009add me to the list - 2000 TJ 99K - Cracked 0331 head. Milkly coolant oil .

The heads that I prefer to use on my drums are Aquarian, but customer . Thank you for your interst in TJS Maple Passion Custom Drums! —Tom J. Schultz. ©2004- 2010 TJS Custom Drums | Tel: 480.277.0331 | Email: tjscustomdrums@cox.net.

Apr 23, 2011 – Blown head gasket or cracked head, Indy, TJ Jeep Wrangler .

5 posts - 4 authors - Last post: Nov 7, 2006It seems as if no one here has heard about the 0331 head castings and their .

8 posts - 2 authors - Last post: Feb 27, 2009The XJ got the #0331 head and DIS for 2000, as I recall, with other models getting it a year . try to get a donor 2002-2007 (WJ/WK/TJ. .

Fits: 2001 WRANGLER TJ CASTING 0331 ONLY VIN S Head bolts not incl.; Head bolt replacement recommended;. Sale Price $69.95 .

9 posts - 4 authors - Last post: Jun 2, 2006Seems like heads with cast #0331 are not great but not enough have cracked or been reported to crack to warrant a recall. My TJ was built .

2000-06 TJ Wrangler; 2000-01 XJ Cherokee; 1999-04 WJ Grand Cherokee; 4.0L 6 cylinder engines; Head cast #0331; Complete with valves and springs .

1 post - 1 author - Last post: Nov 19, 2008Over on jeepstrokers.com I've started to assemble the beginings of a .

Jan 9, 2011 – well found a crack on the head.. just curious if anyone .

Cylinder Head, #0630, 1996-1999XJ, 1996-2000 ZJ/WJ/TJ, Two requested - cracked/ warped OK. Cylinder Head, #0331, 2001-up XJ, 1999-up WJ/TJ .

7 posts - 4 authors - Last post: Mar 30, 2007My TJ has the 0331 head and I have a little over 100000 miles on it.So far everything is fine.Knowing what to look for and whats going on is .

6 posts - 6 authors - Last post: Mar 4, 2010Probably gonna go take a look at an 00' TJ. I know the 00's and 01's have problems with the 0331 head castings cracking. .

2000-06 TJ Wrangler; 2000-01 XJ Cherokee; 1999-04 WJ Grand Cherokee; 4.0L 6 cylinder engines; Head cast #0331; Complete with valves and springs .

15 posts - 11 authors - Last post: Mar 13, 2010The older 0630 head can be adapted to your coil rail ignition, or you can start looking for a 0331 out of an '02 or later TJ in a junk .

5 posts - 4 authors - Last post: Jan 11mine 85 cj 4wd glass body 4in 33 bfg at 4.0 inj hers 200 tj 3in terafelx . That's a known problem with many of the 0331 head castings that .

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