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Go Back   Hummer Forums by Elcova > Hummer H2 Discussion Forums > General H2 Discussion

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  #1  
Old 05-25-2011, 11:34 PM
Easy Ed Easy Ed is offline
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Default Re: Exhaust Gasket leak and stud broke

I replaced all of mine (both sides) and it is not really bad job, just takes some time and some "grin and bare it" too when parts are in the way of getting another part removed. Examples, had to remove a O2 sensor to get to a manifold to exhaust pipe nut removed. Then I had to un-hook front drive shaft to get to another manifold to pipe nut loose. Just a bunch of small things to make the day go by before ya know it

I had all kinds of 1/2" extensions, rachets, sockets, knuckles, vise grips and so on and was able to get it done in a afternoon and evening and not had a problem since, the new manifold bolts are of a different design and should last longer, larger head and a bigger radius under the head causing less of a fracture point.

Part way down this page you can see all the parts http://www.elcovaforums.com/forums/s...ad.php?t=38098

Oh yeah, $2500.00 is too much in my book

Ed
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  #2  
Old 05-26-2011, 02:23 AM
snmazer snmazer is offline
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Default Re: Exhaust Gasket leak and stud broke

sometimes, not always, when I start up my 03, I get a loud hissing sound from under the hood. Sometimes it lasts a half a second, sometimes 10 seconds. Happens in spring, summer, fall,...but never in winter!
Does this sound similiar to what you experienced with the broken header bolts? I cant pin point what the problem is.

Scott
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  #3  
Old 05-26-2011, 02:55 AM
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mbdougl mbdougl is offline
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Default Re: Exhaust Gasket leak and stud broke

Get a price a a reputable repair shop. I got a price on replacing the faulty mirrors on my 04 and they wanted $1800, even the service guy said I would be better off getting them off ebay. I checked with a local body shop and they said they would put them on for $100. Dealers are really only good for warranty work!
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  #4  
Old 05-26-2011, 08:01 AM
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H2Much H2Much is offline
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Default Re: Exhaust Gasket leak and stud broke

Agreed. I had one of those worthless exhaust manfold bolts break off in my engine head, had to have the head pulled. Even after that, the mechanic broke every drill bit known to man trying to drill it out so had to send it to special place to have them torch the bolt out. Had to have new aluminum added to the head and have the hole rethreaded, freaking nightmare. All that, plus replacing the gaskets... $1000. Now, with this being said, you just need to find a decent mechanic, end of story. With what you paid for what you got, you might as well had the dealership bend you over and welcome you to prison.

I found me a mechanic, been doing everything on my ride for the last 5 years, including the repair I mentioned above. Once you build that rapport and trust with someone, they are less likely to take you for a ride and are more likely to take care of your Hum like it was their own. Just my experience...
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  #5  
Old 05-26-2011, 11:54 AM
Tully Tully is offline
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Default Re: Exhaust Gasket leak and stud broke

Quote:
Originally Posted by snmazer
sometimes, not always, when I start up my 03, I get a loud hissing sound from under the hood. Sometimes it lasts a half a second, sometimes 10 seconds. Happens in spring, summer, fall,...but never in winter!
Does this sound similiar to what you experienced with the broken header bolts? I cant pin point what the problem is.

Scott

No, it sounds more like a flapping (or ticking) sound when I accelerate, although does stop after driving the vehicle for a bit...which led me to believe it was a belt or something? (which obviously i was wrong)
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  #6  
Old 05-26-2011, 11:58 AM
Tully Tully is offline
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Default Re: Exhaust Gasket leak and stud broke

Thanks for all the replies. I am taking it to a local service station today to see what they think. I haven't been dissatisfied with the dealer up to this point, I'm used to them 'overpricing' and typically do my homework on the parts and service and then negotiate them down (which they've been flexible with - assuming the bad economy has helped my position)....new recent impression is that they are in even worse shape, this time around there was no wait to get an apointment and I walked into a newly renovated shop that looked like a ghost town.

I think things were more 'down to earth' when they were also a Hummer dealer, now that they are just Caddy again, I think their heads are in the clouds.

Thanks for the information, I'll assume it should be somewhere between a $500 and $1000 job and see what the guy tells me today. Those kind of numbers I can live with....
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  #7  
Old 05-27-2011, 03:07 AM
fllaw1 fllaw1 is offline
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Cool Re: Exhaust Gasket leak and stud broke

Quote:
Originally Posted by Easy Ed
I replaced all of mine (both sides) and it is not really bad job, just takes some time and some "grin and bare it" too when parts are in the way of getting another part removed. Examples, had to remove a O2 sensor to get to a manifold to exhaust pipe nut removed. Then I had to un-hook front drive shaft to get to another manifold to pipe nut loose. Just a bunch of small things to make the day go by before ya know it

I had all kinds of 1/2" extensions, rachets, sockets, knuckles, vise grips and so on and was able to get it done in a afternoon and evening and not had a problem since, the new manifold bolts are of a different design and should last longer, larger head and a bigger radius under the head causing less of a fracture point.

Part way down this page you can see all the parts http://www.elcovaforums.com/forums/s...ad.php?t=38098

Oh yeah, $2500.00 is too much in my book

Ed
ED, I am thinking of doing the same thing you did and replace everything to my 03 it has 23k miles on it and the bolts look a little rusty from the exterior. What do you recommend to remove them with out breaking them off, I was thinking of hosing them down with Penetrating oil before I do it.
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  #8  
Old 05-27-2011, 10:19 AM
Easy Ed Easy Ed is offline
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Default Re: Exhaust Gasket leak and stud broke

Except for the broken ones, mine came loose without adding anything to them. The broken ones came out using a pair of vise grips. If you want to play it safe go ahead with the penetrating oil on the 12 manifold to head bolts and to the 6 manifold to pipe nuts.

The part number for the bolt is 11518860 and the stealership got me for $1.76 each in 2009 ($21.12 for the 12 of them). For gaskets, I bought them at NAPA and they were, FPG MS92467 for the manifold to head gaskets, the set of 2 was $13.29, FPG 61323 for the manifold to pipe gaskets they were $5.49 each.

Good luck, Ed

P.S. 23,000 miles, mine is at around 90,000 now.

Quote:
Originally Posted by fllaw1
ED, I am thinking of doing the same thing you did and replace everything to my 03 it has 23k miles on it and the bolts look a little rusty from the exterior. What do you recommend to remove them with out breaking them off, I was thinking of hosing them down with Penetrating oil before I do it.
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  #9  
Old 06-01-2011, 01:26 AM
AndyMac AndyMac is offline
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Default Re: Exhaust Gasket leak and stud broke

Quote:
Originally Posted by Easy Ed
The part number for the bolt is 11518860 and the stealership got me for $1.76 each in 2009 ($21.12 for the 12 of them).

Wow, they want to gouge me 10 bucks a pop for the bolts up here in the great white north. Think I may have to run state side for the bolts!
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  #10  
Old 11-22-2011, 01:46 AM
OrangeCrush OrangeCrush is offline
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Default Re: Exhaust Gasket leak and stud broke

Quote:
Originally Posted by Easy Ed
I replaced all of mine (both sides) and it is not really bad job, just takes some time and some "grin and bare it" too when parts are in the way of getting another part removed. Examples, had to remove a O2 sensor to get to a manifold to exhaust pipe nut removed. Then I had to un-hook front drive shaft to get to another manifold to pipe nut loose. Just a bunch of small things to make the day go by before ya know it

I had all kinds of 1/2" extensions, rachets, sockets, knuckles, vise grips and so on and was able to get it done in a afternoon and evening and not had a problem since, the new manifold bolts are of a different design and should last longer, larger head and a bigger radius under the head causing less of a fracture point.

Part way down this page you can see all the parts http://www.elcovaforums.com/forums/s...ad.php?t=38098

Oh yeah, $2500.00 is too much in my book

Ed


I?m with Ed on this one... I?ve had to replace the studs on both my H2?s because they broke. Because they break off and usually leave some of the stud sticking out once the manifold is removed, it?s not a problem removing them.

They?d have to be pretty fukked up to pay 2500 to have them repaired by the dealer.


Mark
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  #11  
Old 11-22-2011, 03:55 AM
cashville cashville is offline
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Default Re: Exhaust Gasket leak and stud broke

Did you use anything else besides the vise grips to remove the broken bolts?
The only thing I used was some WD40 like on 3 different days, about a week ago, I put some of it on the broken stud in order to try and have it loosen a bit...
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  #12  
Old 11-22-2011, 05:04 AM
OrangeCrush OrangeCrush is offline
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Default Re: Exhaust Gasket leak and stud broke

Quote:
Originally Posted by cashville
Did you use anything else besides the vise grips to remove the broken bolts?
The only thing I used was some WD40 like on 3 different days, about a week ago, I put some of it on the broken stud in order to try and have it loosen a bit...


I actually used a stud remover (looks like a socket with teeth on the inside that tighten up on the stud as you turn it counterclockwise)

If you remove the manifold (you don?t always have to) it makes it easier.

If I remember correctly, they sell updated bolts/studs.

Mark
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  #13  
Old 11-22-2011, 08:11 AM
cashville cashville is offline
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Default Re: Exhaust Gasket leak and stud broke

I checked it out, and it looks like a great tool to easily remove broken studs.
If I can't take it out tomorrow with a bigger vise grips, I'll have to order one of those...
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  #14  
Old 11-22-2011, 12:07 PM
OrangeCrush OrangeCrush is offline
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Default Re: Exhaust Gasket leak and stud broke

Quote:
Originally Posted by cashville
I checked it out, and it looks like a great tool to easily remove broken studs.
If I can't take it out tomorrow with a bigger vise grips, I'll have to order one of those...


One suggestion... if the stud is iffy right now, don?t put a bigger set of vise grips on it.

I say that because typically if you can?t get a good hold on it, you?ll end up smoothing off the threads and then make it harder to use the stud remover.

One more trick...


If there is enough stud sticking out (which apparently there is cause you?re getting a pair of vise grips on it) get a nut that will slide over the end of the broken stud. Get someone to weld the inside of the nut to the stud and then just use a socket to get the stud out.

Just a few suggestions...


Mark
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  #15  
Old 11-22-2011, 10:25 PM
cashville cashville is offline
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Default Re: Exhaust Gasket leak and stud broke

I've tried the bigger vise grips, but it didn't move...

I will have to try the stud remover. the thred is a little smooth now because I tried yesterday a lot of times, do you think the stud remover will work anyways?
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