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Author Topic: 4l I-6 porous/cracked heads  (Read 1971 times)

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scrw

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4l I-6 porous/cracked heads
« on: February 28, 2011, 08:01:30 PM »
What years & models had issues with porous or cracking heads?
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isle of man

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Re: 4l I-6 porous/cracked heads
« Reply #1 on: February 28, 2011, 08:08:56 PM »
2001 - 2003 I believe.
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Bishops Finger

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Re: 4l I-6 porous/cracked heads
« Reply #2 on: February 28, 2011, 10:11:31 PM »
Seems I read that somewhere as well...
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scrw

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Re: 4l I-6 porous/cracked heads
« Reply #3 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:
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JamesH

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Re: 4l I-6 porous/cracked heads
« Reply #4 on: March 01, 2011, 06:03:40 PM »
the last model ones 2000-2001
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isle of man

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Re: 4l I-6 porous/cracked heads
« Reply #5 on: March 01, 2011, 07:28:23 PM »
Bugger!!!!
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big g

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Re: 4l I-6 porous/cracked heads
« Reply #6 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.

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isle of man

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Re: 4l I-6 porous/cracked heads
« Reply #7 on: March 01, 2011, 07:56:18 PM »
I have a 2004 with coil pack should I get a Tia Bride to pimp ready???
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scrw

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Re: 4l I-6 porous/cracked heads
« Reply #8 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
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big g

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Re: 4l I-6 porous/cracked heads
« Reply #9 on: March 01, 2011, 08:00:18 PM »
I'm referring to XJs.

No nowt about owt as modern as 2004 :017:
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isle of man

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Re: 4l I-6 porous/cracked heads
« Reply #10 on: March 01, 2011, 08:00:33 PM »
Steve PIMP it out!!
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big g

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Re: 4l I-6 porous/cracked heads
« Reply #11 on: March 01, 2011, 08:03:27 PM »
If the head has 0331 in the casting-avoid.

You're heading into VM territory.
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isle of man

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Re: 4l I-6 porous/cracked heads
« Reply #12 on: March 01, 2011, 08:06:37 PM »
I believe the 2004 model year change was the KPI...
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scrw

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Re: 4l I-6 porous/cracked heads
« Reply #13 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
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JamesH

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Re: 4l I-6 porous/cracked heads
« Reply #14 on: March 02, 2011, 09:08:15 AM »
I was thinking XJ only too, no idea about post 2001 (blinkers!)
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