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Unread 07-07-2013, 11:14 AM   #226
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Quote:
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Too bad you couldn't get a JKUR with a GM powertrain. I'd order one tomorrow.
You can

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Unread 07-07-2013, 02:13 PM   #227
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We can all learn from this. Never buy Italian. This is revenge for ww2
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Unread 07-07-2013, 03:28 PM   #228
MattJeep
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Originally Posted by Godholio View Post
There was a batch of affected parts that may or may not manifest problems. Yeah, it sucks that it's a cylinder head, but you know what? Nobody's Jeep is catching fire. Nobody is dying.

Let's not pretend this problem, which so far is impacting about 2% of the people with early 2012s and nobody else, is the end of the world.

No they're not but when the dealer is "fixing" them and the problem seems to come back thats troubling. If it really is a small number of Penstars, thats good.
Hopefully they get a permanent fix for this and it doesn't turn into the OPDA problem of the 05-06's.
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Unread 07-08-2013, 11:02 AM   #229
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Agreed. It would be nice if they actually just fessed up what the specific problem is...but they don't want to draw any attention to it.
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Unread 07-08-2013, 03:37 PM   #230
mini-me
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Confirmed. In the shop to have the head replaced for the second time. How can only 1% be bad?
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Unread 07-08-2013, 07:01 PM   #231
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Nobody has any idea how many have exhibited problems. It's somewhere between 0 and 100%, and since it's never hit the news it's probably closer to the low end. It's not a safety issue so we'll probably never get any hard info.
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Unread 07-09-2013, 03:59 AM   #232
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Are some of the early 13's been having the problem too?

AD
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Unread 07-09-2013, 05:18 AM   #233
NIUPonyBoy
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~2200 miles and not an issue. The 3.6 is a million times better than the 3.8.
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Unread 07-09-2013, 05:26 AM   #234
970001zj
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how many of you with head issues do an actual warm up ?

you know getting it to operating temp before driving it

also i have no clue about these engines so dont flame me
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Unread 07-09-2013, 07:30 AM   #235
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Originally Posted by NIUPonyBoy View Post
~2200 miles and not an issue. The 3.6 is a million times better than the 3.8.
Time will tell. The 3.8 has been in use for 21 years. The 3.6 for 3 years. Any motor needing head replacement this soon is unacceptable imo.
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Unread 07-09-2013, 07:42 AM   #236
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A head is never acceptable on a new or newer engine, but I've seen issues similar as a new platform is introduced. I still have not seen this as a widespread issue at all. My remark on the 3.8 is from a driveability and maintainable stand point. Having owned the 3.8 I would never be cursed with it again.
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Unread 07-09-2013, 07:46 AM   #237
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Just turned 21000 miles last night. No issues. No warm up. Hard driving. I change my oil every 7-8,000 miles with royal purple synthetic. Not that that makes any difference
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Unread 07-09-2013, 07:49 AM   #238
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I test drove a 2011 and a 2013 to see the difference and ended up getting buying a 2013 Rubi 10A. I would vote for the Pentastar more power and I believe better MPG's as well.
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Unread 07-09-2013, 07:53 AM   #239
Utah_Jay
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Quote:
Originally Posted by NIUPonyBoy View Post
A head is never acceptable on a new or newer engine, but I've seen issues similar as a new platform is introduced. I still have not seen this as a widespread issue at all. My remark on the 3.8 is from a driveability and maintainable stand point. Having owned the 3.8 I would never be cursed with it again.
I agree completely. They really messed up with the gearing on the 3.8 making drivability not all that great.
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Unread 07-09-2013, 08:03 AM   #240
schuellk
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Just bought a '13 JK unlimited sport at the end of June with the Pentastar. No ticking or anything so far and have put about 600 miles on in 10 days.
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