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  #37  
Old 12-20-2011, 03:44 PM
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Re: WK 4.7L Driver's Side Exhaust Manifold & Gasket Replacement Writeup W/ Pics

What model years were affected by this? Did this only happen to the 4.7's? Were there any TSB's on it?
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  #38  
Old 12-20-2011, 10:05 PM
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Re: WK 4.7L Driver's Side Exhaust Manifold & Gasket Replacement Writeup W/ Pics

Well the job is done. The manifold was warped badly at the last cylinder. Shoot!
Observations.
Removing the fender liner is a good idea. Helps with attaching the manifold to the downpipe and lining up the manifold.
I bought 25 of those rivets, used 5. Fastenall has the best price and I got them local! Got some spares if anyone needs some. You don't need a rivet gun to set them. I used the blade wrench for my circular saw and a pair of vice grips.

The new gasket has the typical high temp gasket material plus it has a metal backer that's riveted to the hi temp part.

I took one of the broken rear studs and threaded it in about 3 turns on the top. I also cut the head off one of the front studs and did the same there. I was able to hang the gasket on the studs and then do the same with the manifold. After putting a couple of the 4 center ones in I replaced my cut ones and completed the install. (would go much faster with an assistant here)

It is possible to do the job without gearwrenches! a 3/8" and a 1/4" can be used if you have deep and shallow sockets. Nonetheless, go buy the gear wrenches, $26 shipped from HF and you have them for later.
Time to do it? Too long as I took a break to go deer hunting and eat dinner.

Not the most fun job I've done but it's better than changing a rear main seal on a 4.0L !
My wife is happy now, maybe that's a good thing!
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  #39  
Old 01-09-2012, 04:14 PM
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Re: WK 4.7L Driver's Side Exhaust Manifold & Gasket Replacement Writeup W/ Pics

Well, the wife WAS happy. She heard a ticking noise again the other day so I poked around while I was changing the oil. Annnnnd-------
The other side has the same problem!!!
Good grief! Hopefully I can save the manifold on this one. Pass side looks much easier other than an O2 sensor in the way of one the collector bolts.
UPDATE.
Bought new bolts and gasket. The right side is a LOT easier to do than the left. Remove the airbox and fender liner and it's quite accessible. Job is done both are quiet now. If I get 100k out of these I'll be just fine.
FWIW If anyone needs plastic rivets or spare hardware from this job I have both.


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Old 09-14-2012, 10:31 PM
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Re: WK 4.7L Driver's Side Exhaust Manifold & Gasket Replacement Writeup W/ Pics

My manifold was warped very badly about 1/8 inch from completely flat. I went to a machine shop and had it ground flat for $35.
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  #41  
Old 10-12-2012, 05:22 AM
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Re: WK 4.7L Driver's Side Exhaust Manifold & Gasket Replacement Writeup W/ Pics

Hi, I have this problem, what would you do if you knew nothing about tools let alone repairing anything.... Take it to a local garage or dealer and tell them what? Mine is a 2006 jeep wk 4.7... Maybe I can tell them to replace tge manifold/s only if necessary? What would be a reasonable labor charge on this? Thx
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Old 10-12-2012, 11:12 AM
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Re: WK 4.7L Driver's Side Exhaust Manifold & Gasket Replacement Writeup W/ Pics

Quote:
Originally Posted by Laredo2006 View Post
Hi, I have this problem, what would you do if you knew nothing about tools let alone repairing anything.... Take it to a local garage or dealer and tell them what? Mine is a 2006 jeep wk 4.7... Maybe I can tell them to replace tge manifold/s only if necessary? What would be a reasonable labor charge on this? Thx
at a dealership with parts and labor you are looking at about $500-$700 i would say man up and do it yourself lol
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Old 10-15-2012, 01:28 AM
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Re: WK 4.7L Driver's Side Exhaust Manifold & Gasket Replacement Writeup W/ Pics

i did this today and it took me 3.5 hours. removing the wheel well takes 10 min and it is completely necessary IMHO
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  #44  
Old 10-15-2012, 03:04 PM
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Re: WK 4.7L Driver's Side Exhaust Manifold & Gasket Replacement Writeup W/ Pics

Hey guys,

I'll be replacing my shocks/struts in 2-3 weeks so maybe that would be a good time to have this looked at.

What should I tell the local mechanic to look for? Can you guys help me figure this out because it's really busting my chops...

Should I tell him to look for loose bolts and screws? Tear in the driver side manifold or?

Thank you.
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Old 10-15-2012, 04:26 PM
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Re: WK 4.7L Driver's Side Exhaust Manifold & Gasket Replacement Writeup W/ Pics

99% of the time it is a broken bolt or gasket damage. the manifold is cast iron and will not break. it could possibly have warped a tad, but that is a slim possibility. is yours loud?
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Old 10-15-2012, 05:52 PM
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Re: WK 4.7L Driver's Side Exhaust Manifold & Gasket Replacement Writeup W/ Pics

Quote:
Originally Posted by SvenskaJeepGuy View Post
99% of the time it is a broken bolt or gasket damage. the manifold is cast iron and will not break. it could possibly have warped a tad, but that is a slim possibility. is yours loud?
Hey! Thx for the info! No it's not really loud, but if I'm in a garage or if I rev it next to a wall or another car you can clearly hear a gargling crappy noise deflecting. Which parts do you think I will need or is it impossible to tell? Should I buy the parts first or get it diagnosed first?

The following is a complete list of parts and quantities required (including all mounting hardware):
Quan. Part # Description
1 53013599AB Left Exhaust Manifold
1 53034029AD Left Exhaust Manifold Gasket
2 6508219AA Stud (13mm)
2 6508220AA Stud (12mm)
4 6507746AA Exhaust Manifold Bolt (10mm)
2 6503231 Exhaust Manifold Flange Nut
2 6505699AA Exhaust Manifold Flange Bolt (15mm)

Thx!!!!
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Old 10-15-2012, 06:28 PM
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Re: WK 4.7L Driver's Side Exhaust Manifold & Gasket Replacement Writeup W/ Pics

this is what i ordered from just for jeeps....

1 53034029AD Left Exhaust Manifold Gasket
2 6508219AA Stud
2 6508220AA Stud
4 6507746AA Exhaust Manifold Bolt
2 6503231 Exhaust Manifold Flange Nut
2 6505699AA Exhaust Manifold Flange Bolt

came out to about $44 with shipping
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Old 10-15-2012, 06:29 PM
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Re: WK 4.7L Driver's Side Exhaust Manifold & Gasket Replacement Writeup W/ Pics

the stock gaskets do not have metal on them and fall apart, the replacement gasket will have metal
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