Home » Public Forums » GMCnet » [GMCnet] Missing Exhaust Manifold bolt
| [GMCnet] Missing Exhaust Manifold bolt [message #308547] |
Tue, 11 October 2016 04:33  |
Stephen Thomas
Messages: 29
Registered: May 2014
Karma: 0
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Junior Member |
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Hi All,
Im on the road having a bit of an issue. The center exhaust manifold bolt
hole (in the head) has broken and there's no way to tighten the bolt. The
noise from the resulting leak has gotten really bad.
If I get another gasket, should the remaining bolts hold the manifold well
enough to seal? Also, what gasket would be best for this?
We're in the middle of a road trip in Oregon, so I'm hoping for a fix that
will at least hold til I get back to Santa Cruz.
Thanks,
Steve Thomas
78 Eleganza
Currently in Coos Bay
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| Re: [GMCnet] Missing Exhaust Manifold bolt [message #308552 is a reply to message #308547] |
Tue, 11 October 2016 07:45  |
77Royale
Messages: 461
Registered: June 2014
Location: Mid Michigan
Karma: 6
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What Jon Said. Helps to remove the fender liner to get some space to work in there. If you have a brass drift. or long socket extension you want to put it on the remaining bolt heads and give them a sharp rap or two with a hammer. This will help shock them and hopefully make it easier to back them out. (thats what Dave Lenzi advised me).
Be very careful with the remflex as they do not like to be bent at all. Work the new bolts in, in 5 pound increments on your torque wrench. Start with the center two bolts then work out to the outside two. 5 pounds on the wrench at a time. So 5 passes.
Let it heat up then cool down and re check. If you have hi temp anti seize put a little on the bolts.
Not a bad job if your kind of skinny and can lay on top of the tire and reach in there.
77 Royale, Rear Dry Bath. 403, 3.55 Final Drive, Lenzi goodies, Patterson carb and dizzy.
Mid Michigan
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| Re: [GMCnet] Missing Exhaust Manifold bolt [message #308554 is a reply to message #308553] |
Tue, 11 October 2016 08:02 |
Ray Erspamer
Messages: 1707
Registered: May 2007
Location: Milwaukee Wisconsin
Karma: -3
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Remflex makes gasket sets for headers or standard manifolds, make sure you get the proper set.
Ray Erspamer
78 GMC Royale Center Kitchen
403, 3.70 Final Drive
Holley Sniper Quadrajet EFI System,
Holley Hyperspark Ignition System
414-484-9431
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| Re: [GMCnet] Missing Exhaust Manifold bolt [message #308556 is a reply to message #308553] |
Tue, 11 October 2016 08:07 |
tphipps
Messages: 3005
Registered: August 2004
Location: Spanish Fort, AL
Karma: 9
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Senior Member |
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The center bolt acts as a hanger to allow you to manage the exhaust manifold, exhaust gasket, and the bolts without dropping everything. From the description of your leak, sounds like the center bolt was tightened and pulled the manifold towards the top, allowing the gasket to shift. Broken center bolt sounds like P.O. over compensated for the leak by continuing to tighten the bolt and eventually snapping it.
Use anti-size on the bolts. You can attempt to remove the broken bolt, but I might not worry too much about it.
Use the RemFlex gasket from JmK and you will be happy and quiet.
Tom, MS II
2012 Phoenix Cruiser model 2552
KA4CSG
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| Re: [GMCnet] Missing Exhaust Manifold bolt [message #308572 is a reply to message #308563] |
Tue, 11 October 2016 11:32 |
Stephen Thomas
Messages: 29
Registered: May 2014
Karma: 0
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Junior Member |
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Okay, good to know that the center bolt isn't critical. It would be great
to find a gasket locally and replace it before I do much more driving, but
if that can't happen, at least I won't be as worried about it now.
I'll be giving Applied a call in a little while.
Thanks so much for all the advice!
Steve
78 Eleganza
On Oct 11, 2016 6:34 AM, "John Wright" wrote:
> As mentioned previously there are 2 Different Remflex gasket available
> depending on which exhaust setup you have.
>
> Here are the part numbers and pictures for those gaskets.
>
> http://www.gmcmhphotos.com/photos/general-pictures/
> p61525-remflex-gaskets.html
> and
> http://www.gmcmhphotos.com/photos/general-pictures/
> p61527-remflex-gaskets.html
>
> I have found that Jim K has had the lowest prices for these the past few
> years. You probably at times can find them for less elsewhere.
>
> JR Wright
> GMC Great Laker MHC
> GMC Eastern States Charter Member
> GMCGL Tech Editor
> GMCMI
> 78 GMC Buskirk 30’ Stretch
> 1975 GMC Avion (Under Reconstruction)
> Michigan
>
>> On Oct 11, 2016, at 8:58 AM, Billy Massey wrote:
>>
>> Or, support those who support you.
>>
>> http://appliedgmc.com/prod.itml/icOid/670
>>
>> bdub
>>
>>
>> On Tue, Oct 11, 2016 at 6:38 AM, Jon Roche wrote:
>>
>>> Recommended to leave that bolt loose or out. So you are good there.
>>> Just hope the other 4 are able to be removed.
>>>
>>> Amazon up a remflex set, and make sure you have a torque wrench that
> does
>>> 15-20 pounds. Easy repair if the bolts do not breakk
>>>
>
>
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| Re: [GMCnet] Missing Exhaust Manifold bolt [message #308575 is a reply to message #308572] |
Tue, 11 October 2016 12:21 |
lqqkatjon
Messages: 2324
Registered: October 2010
Location: St. Cloud, MN
Karma: 5
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I found that a Fel-pro gasket can be found locally. The fel-pro will work, if you have good mating surfaces. I have yet to find a box store that has the remflex locally in stock, and can get them quicker ordering from amazon(next day). Jim K I would guess would have some, and he might even have some there at Coos bay already.
Jon Roche
75 palm beach
EBL EFI, manny headers, Micro Level, rebuilt most of coach now.
St. Cloud, MN
http://lqqkatjon.blogspot.com/
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| Re: [GMCnet] Missing Exhaust Manifold bolt [message #308597 is a reply to message #308575] |
Tue, 11 October 2016 22:54 |
armandminnie
Messages: 864
Registered: May 2009
Location: Marana, AZ
Karma: 2
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I have found Remflex gaskets at O'Reilly's in the past if I couldn't wait
for Applied or Amazon. That was in San Jose, CA. Small towns may take more
time.
On Tue, Oct 11, 2016 at 10:21 AM, Jon Roche wrote:
> I found that a Fel-pro gasket can be found locally. The fel-pro will
> work, if you have good mating surfaces. I have yet to find a box store that
> has the remflex locally in stock, and can get them quicker ordering from
> amazon(next day). Jim K I would guess would have some, and he might even
> have some there at Coos bay already.
>
>
> --
> Jon Roche
> 75 palm beach
> St. Cloud, MN
> http://lqqkatjon.blogspot.com/
>
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Armand Minnie
Marana, AZ
'76 Eleganza II TZE166V103202
visit my gmc blog
click here to visit gmcws.org
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| Re: [GMCnet] Missing Exhaust Manifold bolt [message #308598 is a reply to message #308597] |
Tue, 11 October 2016 23:02 |
James Hupy
Messages: 6806
Registered: May 2010
Karma: -62
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Armand, we are missing you at GMCWS. We just finished a BBQ dinner at the
yurt. Grilled Tri-tip thin sliced on slider buns, green salad, baked beans,
and home made cookies. Sat outside in shirtsleeve weather, calm, no wind,
great company of about 200 of our GMC friends, good libations of course.
Great fun.
Jim Hupy
Salem, Or.
78 GMC ROYALE 403
On Oct 11, 2016 8:55 PM, "Armand Minnie" wrote:
> I have found Remflex gaskets at O'Reilly's in the past if I couldn't wait
> for Applied or Amazon. That was in San Jose, CA. Small towns may take more
> time.
>
> On Tue, Oct 11, 2016 at 10:21 AM, Jon Roche wrote:
>
>> I found that a Fel-pro gasket can be found locally. The fel-pro will
>> work, if you have good mating surfaces. I have yet to find a box store
> that
>> has the remflex locally in stock, and can get them quicker ordering from
>> amazon(next day). Jim K I would guess would have some, and he might
> even
>> have some there at Coos bay already.
>>
>>
>> --
>> Jon Roche
>> 75 palm beach
>> St. Cloud, MN
>> http://lqqkatjon.blogspot.com/
>>
>> _______________________________________________
>> GMCnet mailing list
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>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
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| Re: [GMCnet] Missing Exhaust Manifold bolt [message #308611 is a reply to message #308598] |
Wed, 12 October 2016 09:08 |
bdub
Messages: 1578
Registered: February 2004
Location: Central Texas
Karma: 5
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Sounds like heaven!
On Tue, Oct 11, 2016 at 11:02 PM, James Hupy wrote:
> Armand, we are missing you at GMCWS. We just finished a BBQ dinner at the
> yurt. Grilled Tri-tip thin sliced on slider buns, green salad, baked beans,
> and home made cookies. Sat outside in shirtsleeve weather, calm, no wind,
> great company of about 200 of our GMC friends, good libations of course.
>
>
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bdub
'76 Palm Beach/Central Texas
www.bdub.net
www.gmcmhphotos.com
www.gmcmotorhomemarketplace.com
www.gmcmhregistry.com
www.facebook.com/groups/classicgmcmotorhomes
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| Re: [GMCnet] Missing Exhaust Manifold bolt [message #308617 is a reply to message #308598] |
Wed, 12 October 2016 09:45 |
Armand Minnie
Messages: 1
Registered: October 2016
Karma: 0
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Junior Member |
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We sure wish we could be there. Would have been a lot more fun than
crawling around Manny's driveway.
On Oct 11, 2016 9:02 PM, "James Hupy" wrote:
> Armand, we are missing you at GMCWS. We just finished a BBQ dinner at the
> yurt. Grilled Tri-tip thin sliced on slider buns, green salad, baked beans,
> and home made cookies. Sat outside in shirtsleeve weather, calm, no wind,
> great company of about 200 of our GMC friends, good libations of course.
> Great fun.
> Jim Hupy
> Salem, Or.
> 78 GMC ROYALE 403
> On Oct 11, 2016 8:55 PM, "Armand Minnie" wrote:
>
>> I have found Remflex gaskets at O'Reilly's in the past if I couldn't wait
>> for Applied or Amazon. That was in San Jose, CA. Small towns may take
> more
>> time.
>>
>> On Tue, Oct 11, 2016 at 10:21 AM, Jon Roche wrote:
>>
>>> I found that a Fel-pro gasket can be found locally. The fel-pro will
>>> work, if you have good mating surfaces. I have yet to find a box store
>> that
>>> has the remflex locally in stock, and can get them quicker ordering
> from
>>> amazon(next day). Jim K I would guess would have some, and he might
>> even
>>> have some there at Coos bay already.
>>>
>>>
>>> --
>>> Jon Roche
>>> 75 palm beach
>>> St. Cloud, MN
>>> http://lqqkatjon.blogspot.com/
>>>
>>> _______________________________________________
>>> GMCnet mailing list
>>> Unsubscribe or Change List Options:
>>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>>
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
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