Home » Public Forums » GMCnet » header gasket leak
| header gasket leak [message #104948] |
Wed, 03 November 2010 15:40  |
jayrabe
Messages: 509
Registered: June 2009
Location: Portland, OR
Karma: 0
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Senior Member |
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Took my 76 PB into the shop in May and spent $440 getting a new gasket on the Jardine headers that were leaking. Shop report after the work was that there was still a slight leak, & they suspected the header flange wasn't true/flat. I didn't notice anything at the time, so went with it, but just last week after a short trip I've got a major noticeable leak on driver's side. Tried to tighten things down, and indeed the front-most bolt was totally loose, though cranking it down didn't completely stop the leak, though it reduced it.
Talked to DJ who is booked for some time but offered his advice and encouragement, suggested I could pull them myself and take them to a shop he recommends here in Portland for truing. He added some pointers on using silicone/cu hi-temp gasket seal when reinstalling, and said I should re-torque after every trip for awhile until things stabilized. Don't remember any advice on that score from the shop that did the work in May, but suspect if I'd done that I wouldn't be in this position now. Live and spend and learn.
So, question is, regardless of DJ's encouragement, I've never done anything this auto-mechanical, and wonder if I should tackle it or not. Is this something a non-mechanic like myself could manage to get done without screwing things up? Any special tips to help me through it?
Thanks as always
J
76 PB
Portland, OR
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| Re: [GMCnet] header gasket leak [message #104951 is a reply to message #104948] |
Wed, 03 November 2010 15:48  |
James Hupy
Messages: 6806
Registered: May 2010
Karma: -62
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Senior Member |
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Jay, contact me off net either by email or the phone # I gave you & I will
walk you through it.
Jim Hupy
Salem, Or
78 Royale 403
On Wed, Nov 3, 2010 at 1:40 PM, Jay Rabe <jayrabe@hotmail.com> wrote:
>
>
> Took my 76 PB into the shop in May and spent $440 getting a new gasket on
> the Jardine headers that were leaking. Shop report after the work was that
> there was still a slight leak, & they suspected the header flange wasn't
> true/flat. I didn't notice anything at the time, so went with it, but just
> last week after a short trip I've got a major noticeable leak on driver's
> side. Tried to tighten things down, and indeed the front-most bolt was
> totally loose, though cranking it down didn't completely stop the leak,
> though it reduced it.
>
> Talked to DJ who is booked for some time but offered his advice and
> encouragement, suggested I could pull them myself and take them to a shop he
> recommends here in Portland for truing. He added some pointers on using
> silicone/cu hi-temp gasket seal when reinstalling, and said I should
> re-torque after every trip for awhile until things stabilized. Don't
> remember any advice on that score from the shop that did the work in May,
> but suspect if I'd done that I wouldn't be in this position now. Live and
> spend and learn.
>
> So, question is, regardless of DJ's encouragement, I've never done anything
> this auto-mechanical, and wonder if I should tackle it or not. Is this
> something a non-mechanic like myself could manage to get done without
> screwing things up? Any special tips to help me through it?
>
> Thanks as always
>
> J
> 76 PB
> Portland, OR
>
>
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
_______________________________________________
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List Information and Subscription Options:
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| Re: [GMCnet] header gasket leak [message #104957 is a reply to message #104948] |
Wed, 03 November 2010 15:58 |
Mr ERFisher
Messages: 7117
Registered: August 2005
Karma: 2
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Senior Member |
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yes , you can do it all your self, read here and follow to the
"header"section.
Headers are very flexible, so just take them off, and when cold, flatten
each section with a file and straight edge. This is not hard.
then put them back on with (I use Mr.Gasket, copper for headers) or Remflex,
and tight them as hard as you can with a long, end wrench, (as Emery
describes).
then tighten them after every trip until they take a set and you can no
longer get any movement of the wrench.( takes 3 to 5 times). You could buy
locking plates from Lenzi, but I find it is not the nuts coming loose, it is
the header forming, bolts stretching, gaskets compressing, etal.
good luck
gene
On Wed, Nov 3, 2010 at 1:40 PM, Jay Rabe <jayrabe@hotmail.com> wrote:
>
>
> Took my 76 PB into the shop in May and spent $440 getting a new gasket on
> the Jardine headers that were leaking. Shop report after the work was that
> there was still a slight leak, & they suspected the header flange wasn't
> true/flat. I didn't notice anything at the time, so went with it, but just
> last week after a short trip I've got a major noticeable leak on driver's
> side. Tried to tighten things down, and indeed the front-most bolt was
> totally loose, though cranking it down didn't completely stop the leak,
> though it reduced it.
>
> Talked to DJ who is booked for some time but offered his advice and
> encouragement, suggested I could pull them myself and take them to a shop he
> recommends here in Portland for truing. He added some pointers on using
> silicone/cu hi-temp gasket seal when reinstalling, and said I should
> re-torque after every trip for awhile until things stabilized. Don't
> remember any advice on that score from the shop that did the work in May,
> but suspect if I'd done that I wouldn't be in this position now. Live and
> spend and learn.
>
> So, question is, regardless of DJ's encouragement, I've never done anything
> this auto-mechanical, and wonder if I should tackle it or not. Is this
> something a non-mechanic like myself could manage to get done without
> screwing things up? Any special tips to help me through it?
>
> Thanks as always
>
> J
> 76 PB
> Portland, OR
>
>
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Gene Fisher -- 74-23,77PB/ore/ca
“Give a man a fish; you have fed him for today --- give him a URL and
-------
http://gmcmotorhome.info/
Alternator Protection Cable
http://gmcmotorhome.info/APC.html
_______________________________________________
GMCnet mailing list
List Information and Subscription Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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| Re: [GMCnet] header gasket leak [message #104958 is a reply to message #104957] |
Wed, 03 November 2010 15:58 |
Mr ERFisher
Messages: 7117
Registered: August 2005
Karma: 2
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Senior Member |
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well how about a link ?
http://gmcmotorhome.info/HEADERS.html#manifold
gene
On Wed, Nov 3, 2010 at 1:58 PM, Mr.erf ERFisher <mr.erfisher@gmail.com>wrote:
> yes , you can do it all your self, read here and follow to the
> "header"section.
>
>
> Headers are very flexible, so just take them off, and when cold, flatten
> each section with a file and straight edge. This is not hard.
>
> then put them back on with (I use Mr.Gasket, copper for headers) or
> Remflex, and tight them as hard as you can with a long, end wrench, (as
> Emery describes).
>
> then tighten them after every trip until they take a set and you can no
> longer get any movement of the wrench.( takes 3 to 5 times). You could buy
> locking plates from Lenzi, but I find it is not the nuts coming loose, it is
> the header forming, bolts stretching, gaskets compressing, etal.
>
> good luck
> gene
>
>
> On Wed, Nov 3, 2010 at 1:40 PM, Jay Rabe <jayrabe@hotmail.com> wrote:
>
>>
>>
>> Took my 76 PB into the shop in May and spent $440 getting a new gasket on
>> the Jardine headers that were leaking. Shop report after the work was that
>> there was still a slight leak, & they suspected the header flange wasn't
>> true/flat. I didn't notice anything at the time, so went with it, but just
>> last week after a short trip I've got a major noticeable leak on driver's
>> side. Tried to tighten things down, and indeed the front-most bolt was
>> totally loose, though cranking it down didn't completely stop the leak,
>> though it reduced it.
>>
>> Talked to DJ who is booked for some time but offered his advice and
>> encouragement, suggested I could pull them myself and take them to a shop he
>> recommends here in Portland for truing. He added some pointers on using
>> silicone/cu hi-temp gasket seal when reinstalling, and said I should
>> re-torque after every trip for awhile until things stabilized. Don't
>> remember any advice on that score from the shop that did the work in May,
>> but suspect if I'd done that I wouldn't be in this position now. Live and
>> spend and learn.
>>
>> So, question is, regardless of DJ's encouragement, I've never done
>> anything this auto-mechanical, and wonder if I should tackle it or not. Is
>> this something a non-mechanic like myself could manage to get done without
>> screwing things up? Any special tips to help me through it?
>>
>> Thanks as always
>>
>> J
>> 76 PB
>> Portland, OR
>>
>>
>> _______________________________________________
>> GMCnet mailing list
>> List Information and Subscription Options:
>> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>>
>
>
>
> --
> Gene Fisher -- 74-23,77PB/ore/ca
> “Give a man a fish; you have fed him for today --- give him a URL and
> -------
> http://gmcmotorhome.info/
> Alternator Protection Cable
> http://gmcmotorhome.info/APC.html
>
--
Gene Fisher -- 74-23,77PB/ore/ca
“Give a man a fish; you have fed him for today --- give him a URL and
-------
http://gmcmotorhome.info/
Alternator Protection Cable
http://gmcmotorhome.info/APC.html
_______________________________________________
GMCnet mailing list
List Information and Subscription Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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| Re: [GMCnet] header gasket leak [message #104990 is a reply to message #104948] |
Wed, 03 November 2010 20:30 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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Senior Member |
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Do not true the headers, I'm sure Jim H will help you.
You must re torque the 4 bolts only after driving 2-300 miles. If not
you can end up doing it again.
On Wed, Nov 3, 2010 at 1:40 PM, Jay Rabe <jayrabe@hotmail.com> wrote:
>
>
> Took my 76 PB into the shop in May and spent $440 getting a new gasket on the Jardine headers that were leaking. Shop report after the work was that there was still a slight leak, & they suspected the header flange wasn't true/flat. I didn't notice anything at the time, so went with it, but just last week after a short trip I've got a major noticeable leak on driver's side. Tried to tighten things down, and indeed the front-most bolt was totally loose, though cranking it down didn't completely stop the leak, though it reduced it.
>
> Talked to DJ who is booked for some time but offered his advice and encouragement, suggested I could pull them myself and take them to a shop he recommends here in Portland for truing. He added some pointers on using silicone/cu hi-temp gasket seal when reinstalling, and said I should re-torque after every trip for awhile until things stabilized. Don't remember any advice on that score from the shop that did the work in May, but suspect if I'd done that I wouldn't be in this position now. Live and spend and learn.
>
> So, question is, regardless of DJ's encouragement, I've never done anything this auto-mechanical, and wonder if I should tackle it or not. Is this something a non-mechanic like myself could manage to get done without screwing things up? Any special tips to help me through it?
>
> Thanks as always
>
> J
> 76 PB
> Portland, OR
>
>
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Jim Kanomata
Applied/GMC, Fremont,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
_______________________________________________
GMCnet mailing list
List Information and Subscription Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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| Re: [GMCnet] header gasket leak [message #105010 is a reply to message #104957] |
Thu, 04 November 2010 00:13 |
jayrabe
Messages: 509
Registered: June 2009
Location: Portland, OR
Karma: 0
|
Senior Member |
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Do I use a gasket on re-install or just the Mr. Gasket stuff? If a gasket, are there options? PN's?
Thanks to everyone for the help.
J
76 PB
Portland, OR
From: mr.erfisher@gmail.com
> To: gmclist@temp.gmcnet.org
> Subject: Re: [GMCnet] header gasket leak
>
> yes , you can do it all your self, read here and follow to the
> "header"section.
>
>
> Headers are very flexible, so just take them off, and when cold, flatten
> each section with a file and straight edge. This is not hard.
>
> then put them back on with (I use Mr.Gasket, copper for headers) or Remflex,
> and tight them as hard as you can with a long, end wrench, (as Emery
> describes).
>
> then tighten them after every trip until they take a set and you can no
> longer get any movement of the wrench.( takes 3 to 5 times). You could buy
> locking plates from Lenzi, but I find it is not the nuts coming loose, it is
> the header forming, bolts stretching, gaskets compressing, etal.
>
> good luck
> gene
_______________________________________________
GMCnet mailing list
List Information and Subscription Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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| Re: header gasket leak [message #105011 is a reply to message #104948] |
Thu, 04 November 2010 00:22 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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Senior Member |
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It is not a difficult job. Many people have replaced them on the road. Just get the copper or Remflex gasket FOR HEADERS, not for an exhaust manifold. Undo the 5 bolts, push the header to the side, slide the old one out, and insert the new one. Torque ONLY the 4 bolts that are in line. Barely hand tighten the top one until snug and no more. Recheck the torque on the 4 inline bolts every 300 to 500 miles until the bolts no longer tighten. You do not need to use a torque wrench. Just use a 10 to 12 " box wrench and make sue they are all tight.
When initially installing the bolts do not worry about using a torque wrench on all of the bolts. Torque the ones you can get to and use a box or offset box wrench on the others. Just estimate how tight they are.
Usually the most difficult problem in this job is getting the bolts loose. You should not have any difficulty getting the bolts loose since yours were recently removed to install the previous gasket. I used anti-seize on my bolt threads when I reinstalled them so I would not have additional problems removing them, if required, in the future. Some people here do not like the anti-seize idea. The choice is yours on the anti-seize. If you want it you can get anti-seize at any auto parts store for a few dollars.
Good luck. It is not a difficult job.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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| Re: [GMCnet] header gasket leak [message #105034 is a reply to message #104990] |
Thu, 04 November 2010 10:08 |
shawnee
Messages: 422
Registered: February 2004
Location: NC
Karma: 0
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Senior Member |
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| jimk wrote on Wed, 03 November 2010 21:30 |
Do not true the headers, I'm sure Jim H will help you.
You must re torque the 4 bolts only after driving 2-300 miles. If not
you can end up doing it again.
On Wed, Nov 3, 2010 at 1:40 PM, Jay Rabe <jayrabe@hotmail.com> wrote:
>
>
> Took my 76 PB into the shop in May and spent $440 getting a new gasket on the Jardine headers that were leaking. Shop report after the work was that there was still a slight leak, & they suspected the header flange wasn't true/flat. I didn't notice anything at the time, so went with it, but just last week after a short trip I've got a major noticeable leak on driver's side. Tried to tighten things down, and indeed the front-most bolt was totally loose, though cranking it down didn't completely stop the leak, though it reduced it.
>
> Talked to DJ who is booked for some time but offered his advice and encouragement, suggested I could pull them myself and take them to a shop he recommends here in Portland for truing. He added some pointers on using silicone/cu hi-temp gasket seal when reinstalling, and said I should re-torque after every trip for awhile until things stabilized. Don't remember any advice on that score from the shop that did the work in May, but suspect if I'd done that I wouldn't be in this position now. Live and spend and learn.
>
> So, question is, regardless of DJ's encouragement, I've never done anything this auto-mechanical, and wonder if I should tackle it or not. Is this something a non-mechanic like myself could manage to get done without screwing things up? Any special tips to help me through it?
>
> Thanks as always
>
> J
> 76 PB
> Portland, OR
>
|
About 12 years ago I had my Paterson engine installed by Dick and he sent the headers out to be machined smooth. He installed them without a gasket. I retightened them after about 1000 miles and haven't touched them since. I couldn't tell if the bolts moved. I have had no leaks since then. Worked fo me.
Gene Dotson
74 Canyonlands
www.bdub.net/Motorhome_Enhancements New Windows and Aluminum Radiators
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| Re: [GMCnet] header gasket leak [message #105053 is a reply to message #105010] |
Thu, 04 November 2010 12:55 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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Senior Member |
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You might try Rimflex gaskets, they seem to work well.
We stock them , should you have dificulty finding them, call us.
On Wed, Nov 3, 2010 at 10:13 PM, Jay Rabe <jayrabe@hotmail.com> wrote:
>
> Do I use a gasket on re-install or just the Mr. Gasket stuff? If a gasket, are there options? PN's?
>
> Thanks to everyone for the help.
>
> J
> 76 PB
> Portland, OR
>
>
> Â From: mr.erfisher@gmail.com
>> To: gmclist@temp.gmcnet.org
>> Subject: Re: [GMCnet] header gasket leak
>>
>> yes , you can do it all your self, read here and follow to the
>> "header"section.
>>
>>
>> Headers are very flexible, so just take them off, and when cold, flatten
>> each section with a file and straight edge. Â This is not hard.
>>
>> then put them back on with (I use Mr.Gasket, copper for headers) or Remflex,
>> and tight them as hard as you can with a long, end wrench, (as Emery
>> describes).
>>
>> then tighten them after every trip until they take a set and you can no
>> longer get any movement of the wrench.( takes 3 to 5 times). Â You could buy
>> locking plates from Lenzi, but I find it is not the nuts coming loose, it is
>> the header forming, bolts stretching, gaskets compressing, etal.
>>
>> good luck
>> gene
>
>
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Jim Kanomata
Applied/GMC, Fremont,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
_______________________________________________
GMCnet mailing list
List Information and Subscription Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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