| exhaust manifold [message #139371] |
Mon, 15 August 2011 23:15  |
2-4 the road
Messages: 145
Registered: June 2009
Location: Fulltimers
Karma: 0
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Senior Member |
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Removed leaking exhaust manifold and found
bad gasket and warped manifold. Bought new oem
gaskets and had manifold planed. I've been told
told to use gaskets and vice-versa. What's the
consensus here?
Thanks
Bill
2-4 the road
77 Kingsley 455
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| Re: [GMCnet] exhaust manifold [message #139387 is a reply to message #139384] |
Tue, 16 August 2011 00:56  |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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Senior Member |
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When a manifold is planned, There is always a chance that the manifold
will hit the block and thus it will not seal.
Remflex should work even with a slight warped manifold.
We will refund the purchase cost if it does not work.
On Mon, Aug 15, 2011 at 10:26 PM, Rob Mueller <robmueller@iinet.net.au> wrote:
> Bill,
>
> IIRC the Olds 455 came without any gaskets between the manifold and the
> block.
>
> I would think that would require the surface of the block and manifold to be
> pristine.
>
> It has been noted here that if your block and manifold are in good shape the
> gaskets from Dave Lenzi and sold by JimK are the best.
>
> http://www.appliedgmc.com/prod.itml/icOid/834
>
> It has been noted that if your block and manifold are not in good shape the
> Remflex gaskets sold by JimK are the best.
>
> http://www.appliedgmc.com/prod.itml/icOid/670
>
> I have NO EXPERIENCE with either; however, I have a set of both here in
> Australia just in case!
>
> Regards,
> Rob M.
>
> -----Original Message-----
> From: JoAnne Bissell
>
> Removed leaking exhaust manifold and found
> bad gasket and warped manifold. Bought new oem
> gaskets and had manifold planed. I've been told
> told to use gaskets and vice-versa. What's the
> consensus here?
> Thanks
> Bill
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List 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
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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| Re: exhaust manifold [message #139410 is a reply to message #139401] |
Tue, 16 August 2011 07:39 |
tphipps
Messages: 3005
Registered: August 2004
Location: Spanish Fort, AL
Karma: 9
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Senior Member |
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Another vote for Remflex. I've used them on two different 455's and they work very well. Remember proper torgue setting and the middle bolt is not tightened very much, just past finger tight. Serves only to hold the manifold in place while you place the other 4 bolts in. Remflex needs to be re-tightened, per instructions, after some usage.
http://catalog.remflex.com/category_s/36.htm for further information. Get them from JmK or your favorite GMC Motorhome supplier.
Tom Phipps, MS II
2012 Phoenix Cruiser model 2552
KA4CSG
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| Re: exhaust manifold [message #139416 is a reply to message #139371] |
Tue, 16 August 2011 08:16 |
2-4 the road
Messages: 145
Registered: June 2009
Location: Fulltimers
Karma: 0
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Senior Member |
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Thanks everyone. I'll go with the oem's
for now and if they don't hold I'll get
the remflex. I really appreciate the help
from you guys.
Bill
2-4 the road
77 Kingsley 455
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| Re: exhaust manifold [message #139421 is a reply to message #139416] |
Tue, 16 August 2011 08:34 |
C Boyd
Messages: 2629
Registered: April 2006
Karma: 18
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Senior Member |
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| 2-4 the road wrote on Tue, 16 August 2011 09:16 |
Thanks everyone. I'll go with the oem's
for now and if they don't hold I'll get
the remflex. I really appreciate the help
from you guys.
Bill
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Sir: my sperience with stock gaskets has been they will burn out in 6 months to a year even with good surfaces. A friends coach had a broken manifold at the bolt holes and we replaced with a machined used one, the problem was really the head, as the flanges were all but burnt off. No way anything would seal I figured. Jim K sent us a set of Remflex and no leak. I was amazed. The last report was 2 trips and 6 months later still quiet. The package says "no retorquing required". I advised him to check them anyway. I believe the "stock" gaskets (which they never had) are a waste of time and money.
C. Boyd
76 Crestmont
East Tennessee
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| Re: [GMCnet] exhaust manifold [message #139459 is a reply to message #139432] |
Tue, 16 August 2011 12:31 |
tphipps
Messages: 3005
Registered: August 2004
Location: Spanish Fort, AL
Karma: 9
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Senior Member |
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Why do it twice? Use the proper Remflex and be done with it. There are other things to spend time and money on.
Tom Phipps, MS II
2012 Phoenix Cruiser model 2552
KA4CSG
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| Re: exhaust manifold [message #139488 is a reply to message #139410] |
Tue, 16 August 2011 15:48 |
hal kading
Messages: 642
Registered: February 2004
Location: Las Cruces NM
Karma: 4
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Senior Member |
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Tom,
"Remflex needs to be re-tightened, per instructions, after some usage."
Remflex instructions say re-tightening not necessary.
From their site:
"• No Re-Torquing Necessary:
Remflex exhaust gaskets rebound 30%, creating an optimum seal that eliminates the need to re-torque!"
Hal Kading 78 Buskirk Las Cruces NM
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