Birty Dastards Jeep Club

Tech Forum => Workshop => Topic started by: scrw on February 28, 2011, 08:01:30 PM

Title: 4l I-6 porous/cracked heads
Post by: scrw on February 28, 2011, 08:01:30 PM: What years & models had issues with porous or cracking heads?
Title: Re: 4l I-6 porous/cracked heads
Post by: isle of man on February 28, 2011, 08:08:56 PM: 2001 - 2003 I believe.
Title: Re: 4l I-6 porous/cracked heads
Post by: Bishops Finger on February 28, 2011, 10:11:31 PM: Seems I read that somewhere as well...
Title: Re: 4l I-6 porous/cracked heads
Post by: scrw on February 28, 2011, 10:13:19 PM: Quote from: Bishops Finger on February 28, 2011, 10:11:31 PM
Seems I read that somewhere as well...

read...READ! surely someone must have told you :hysterical:
Title: Re: 4l I-6 porous/cracked heads
Post by: JamesH on March 01, 2011, 06:03:40 PM: the last model ones 2000-2001
Title: Re: 4l I-6 porous/cracked heads
Post by: isle of man on March 01, 2011, 07:28:23 PM: Bugger!!!!
Title: Re: 4l I-6 porous/cracked heads
Post by: big g on March 01, 2011, 07:53:56 PM: Quote from: JamesH on March 01, 2011, 06:03:40 PM
the last model ones 2000-2001

Indeed.

If your engine has coil packs get ready for bother.
Title: Re: 4l I-6 porous/cracked heads
Post by: isle of man on March 01, 2011, 07:56:18 PM: I have a 2004 with coil pack should I get a Tia Bride to pimp ready???
Title: Re: 4l I-6 porous/cracked heads
Post by: scrw on March 01, 2011, 07:59:16 PM: Quote from: big g on March 01, 2011, 07:53:56 PM
Indeed.

If your engine has coil packs get ready for bother.

is that all I-6 engines? the WG is a '99 with a coil pack, or are you just talking XJ/TJ?

need to know, may need to source a head for a new XJ I have aquired & don't want to get more pain in the future
Title: Re: 4l I-6 porous/cracked heads
Post by: big g on March 01, 2011, 08:00:18 PM: I'm referring to XJs.

No nowt about owt as modern as 2004 :017:
Title: Re: 4l I-6 porous/cracked heads
Post by: isle of man on March 01, 2011, 08:00:33 PM: Steve PIMP it out!!
Title: Re: 4l I-6 porous/cracked heads
Post by: big g on March 01, 2011, 08:03:27 PM: If the head has 0331 in the casting-avoid.

You're heading into VM territory.
Title: Re: 4l I-6 porous/cracked heads
Post by: isle of man on March 01, 2011, 08:06:37 PM: I believe the 2004 model year change was the KPI...
Title: Re: 4l I-6 porous/cracked heads
Post by: scrw on March 01, 2011, 08:16:58 PM: Quote from: big g on March 01, 2011, 08:03:27 PM
If the head has 0331 in the casting-avoid.

Ta
Title: Re: 4l I-6 porous/cracked heads
Post by: JamesH on March 02, 2011, 09:08:15 AM: I was thinking XJ only too, no idea about post 2001 (blinkers!)