Home » Public Forums » GMCnet » [GMCnet] Should I wrap headers to reduce engine compartment heat?
| [GMCnet] Should I wrap headers to reduce engine compartment heat? [message #283742] |
Sun, 02 August 2015 13:09  |
Advanced Concept Ener
Messages: 112
Registered: December 2014
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I am just about finished insulating and adding sound deadening to the engine compartment and I am staring at the headers being just a few inches from the plug wires and not far from the HEI and. Wondering should I wrap the headers or otherwise put a heat shield in between them and the ignition components. Just don't know what the long term effects are on exhaust system and headers. Has anybody had any good or bad experiences with this?
Jon Darcy ACES
North Jersey 76 stretch, flares, 4 bag, Alcoa's, bunkhouse,MAC Dash
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| Re: [GMCnet] Should I wrap headers to reduce engine compartment heat? [message #283747 is a reply to message #283742] |
Sun, 02 August 2015 13:33  |
James Hupy
Messages: 6806
Registered: May 2010
Karma: -62
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Headers have, for the most part if the engine is properly tuned after they
have been added, the same exhaust gas temperatures going through them that
cast iron manifolds do. Both systems will do equal damage to wires, hoses,
and fingers. Use stand off brackets for all wires and hoses, and keep your
fingers away from them. Due diligence is the name of the game here. There
are pros and cons on header wrapping. On downstream turbochargers you want
to keep the heat in the headers. If you have materials near the headers,
Nomex sheathing is good stuff but $$$$. Some of that wrapping stuff is
critters favorite nesting material. I frequently see it squirreled away
under air cleaners.
Jim Hupy
Salem, Or
78 GMC ROYALE 403
On Aug 2, 2015 11:10 AM, "Advanced Concept Energy Solutions" <
aces4nrg@gmail.com> wrote:
> I am just about finished insulating and adding sound deadening to the
> engine compartment and I am staring at the headers being just a few inches
> from the plug wires and not far from the HEI and. Wondering should I wrap
> the headers or otherwise put a heat shield in between them and the ignition
> components. Just don't know what the long term effects are on exhaust
> system and headers. Has anybody had any good or bad experiences with this?
>
> Jon Darcy ACES
> North Jersey 76 stretch, flares, 4 bag, Alcoa's, bunkhouse,MAC Dash
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
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| Re: [GMCnet] Should I wrap headers to reduce engine compartment heat? [message #283766 is a reply to message #283762] |
Sun, 02 August 2015 17:14 |
Kingsley Coach
Messages: 2691
Registered: March 2009
Location: Nova Scotia Canada
Karma: -34
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Senior Member |
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Speaking of headers, Jim...you wrote.." Headers have, for the most part if
the engine is properly tuned after they
have been added..."
Is there something I should do 'after' I add headers this week ??
Mike in NS
On Sun, Aug 2, 2015 at 5:57 PM, D C _Mac_ Macdonald
wrote:
> Spark Plug Wires from Magnecore would probably also do you just fine!
>
> ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
> ~~ ~ D C "Mac" Macdonald ~ ~~
> ~ ~ Amateur Radio - K2GKK ~ ~
> ~ ~ Since 30 November '53 ~ ~
> ~ ~ USAF and FAA, Retired ~ ~
> ~ Member GMCMI and Classics ~
> ~ ~ ~ Oklahoma City, OK ~ ~ ~
> ~~ ~ ~ "The Money Pit" ~ ~ ~~
> ~ ~ ~ ~ TZE166V101966 ~ ~ ~ ~
> ~ ~ ~ '76 ex-Palm Beach ~ ~ ~
> ~~ k2gkk + hotmail dot com ~~
> ~ www.gmcmhphotos.com/okclb ~
> ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
> ______________
> |[ ]~~~[][ ][]\
> "--OO--[]---O-"
>
>
>
>> From: robmueller@iinet.net.au
>> To: gmclist@list.gmcnet.org
>> Date: Mon, 3 Aug 2015 06:34:14 +1000
>> Subject: Re: [GMCnet] Should I wrap headers to reduce engine
> compartment heat?
>>
>> IIRC the headers come with instructions NOT to wrap them, if you do they
> will rust out much more quickly than if you don't.
>>
>> Get a set of spark plug wires from Springfield Ignition:
>>
>> http://www.springfield-ignition.com/plug-wires/
>>
>> Regards,
>> Rob M.
>> The Pedantic Mechanic
>>
>> -----Original Message-----
>> From: Advanced Concept Energy Solutions
>>
>> I am just about finished insulating and adding sound deadening to the
> engine compartment and I am staring at the headers being just
>> a few inches from the plug wires and not far from the HEI and. Wondering
> should I wrap the headers or otherwise put a heat shield in
>> between them and the ignition components. Just don't know what the long
> term effects are on exhaust system and headers. Has anybody
>> had any good or bad experiences with this?
>>
>> Jon Darcy
>>
>>
>> _______________________________________________
>> 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
>
--
Michael Beaton
1977 Kingsley 26-11
1977 Eleganza II 26-3
Antigonish, NS
Life is too short to hold a grudge; slash some tires and call it even !
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| Re: [GMCnet] Should I wrap headers to reduce engine compartment heat? [message #283768 is a reply to message #283742] |
Sun, 02 August 2015 17:23 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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Senior Member |
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Jon,
I would NOT wrap the headers because of the rusting that's likely to
promote.
You should do something to protect the plastic wheel well liner on the
passenger's side from the intense heat -- or it will choose its own
modification. After I didn't like its version, I cut it away and replaced
that area with pop-riveted on aluminum replacement for the ABS plastic.
I recommend fabricating an aluminum shield for the speedometer cable where
it's near the headers; nothing fancy, just a heat deflector to promote
unheated air flow in place of the radiated heat from the overhead header.
Likewise for the starter; the solenoid and wires, especially, are too
exposed to the right header and will appreciate a little shielding. You
need to also pay attention to the routing of the wire for the "kickdown
solenoid" on the transmission (and perhaps another if you have a switch
pitch transmission). Those come down beside the bellhousing awfully close
to the exhaust pipe; I have those shielded also.
JWID,
Ken H.
On Sun, Aug 2, 2015 at 2:09 PM, Advanced Concept Energy Solutions <
aces4nrg@gmail.com> wrote:
> I am just about finished insulating and adding sound deadening to the
> engine compartment and I am staring at the headers being just a few inches
> from the plug wires and not far from the HEI and. Wondering should I wrap
> the headers or otherwise put a heat shield in between them and the ignition
> components. Just don't know what the long term effects are on exhaust
> system and headers. Has anybody had any good or bad experiences with this?
>
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: [GMCnet] Should I wrap headers to reduce engine compartment heat? [message #283769 is a reply to message #283766] |
Sun, 02 August 2015 17:25 |
James Hupy
Messages: 6806
Registered: May 2010
Karma: -62
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Senior Member |
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Due to the fact that they improve the flow of gasses from the engine, the
net result can SOMETIMES be a lean condition at certain rpms. Not an exact
science with GMC coaches at the rpm most of us run. Need plug checks and
egt probes to be sure. If the end result in your case is a lean mixture,
then, yes, the headers will run hotter than iron manifolds. We usually do
not rev high enough to see any value in headers, especially large tube
ones. Sure do sound neat though. Whatever that's worth. Jim Bounds ran
quite a few dyno tests on Drew Koba engines. Results are on his Web site.
Jim Hupy
Salem, Or
78 Gmc ROYALE 403
On Aug 2, 2015 3:14 PM, "Kingsley Coach" wrote:
> Speaking of headers, Jim...you wrote.." Headers have, for the most part if
> the engine is properly tuned after they
> have been added..."
> Is there something I should do 'after' I add headers this week ??
>
> Mike in NS
>
> On Sun, Aug 2, 2015 at 5:57 PM, D C _Mac_ Macdonald
> wrote:
>
>> Spark Plug Wires from Magnecore would probably also do you just fine!
>>
>> ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
>> ~~ ~ D C "Mac" Macdonald ~ ~~
>> ~ ~ Amateur Radio - K2GKK ~ ~
>> ~ ~ Since 30 November '53 ~ ~
>> ~ ~ USAF and FAA, Retired ~ ~
>> ~ Member GMCMI and Classics ~
>> ~ ~ ~ Oklahoma City, OK ~ ~ ~
>> ~~ ~ ~ "The Money Pit" ~ ~ ~~
>> ~ ~ ~ ~ TZE166V101966 ~ ~ ~ ~
>> ~ ~ ~ '76 ex-Palm Beach ~ ~ ~
>> ~~ k2gkk + hotmail dot com ~~
>> ~ www.gmcmhphotos.com/okclb ~
>> ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
>> ______________
>> |[ ]~~~[][ ][]\
>> "--OO--[]---O-"
>>
>>
>>
>>> From: robmueller@iinet.net.au
>>> To: gmclist@list.gmcnet.org
>>> Date: Mon, 3 Aug 2015 06:34:14 +1000
>>> Subject: Re: [GMCnet] Should I wrap headers to reduce engine
>> compartment heat?
>>>
>>> IIRC the headers come with instructions NOT to wrap them, if you do
> they
>> will rust out much more quickly than if you don't.
>>>
>>> Get a set of spark plug wires from Springfield Ignition:
>>>
>>> http://www.springfield-ignition.com/plug-wires/
>>>
>>> Regards,
>>> Rob M.
>>> The Pedantic Mechanic
>>>
>>> -----Original Message-----
>>> From: Advanced Concept Energy Solutions
>>>
>>> I am just about finished insulating and adding sound deadening to the
>> engine compartment and I am staring at the headers being just
>>> a few inches from the plug wires and not far from the HEI and.
> Wondering
>> should I wrap the headers or otherwise put a heat shield in
>>> between them and the ignition components. Just don't know what the long
>> term effects are on exhaust system and headers. Has anybody
>>> had any good or bad experiences with this?
>>>
>>> Jon Darcy
>>>
>>>
>>> _______________________________________________
>>> 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
>>
>
>
>
> --
> Michael Beaton
> 1977 Kingsley 26-11
> 1977 Eleganza II 26-3
> Antigonish, NS
>
> Life is too short to hold a grudge; slash some tires and call it even !
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
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| Re: [GMCnet] Should I wrap headers to reduce engine compartment heat? [message #283796 is a reply to message #283769] |
Sun, 02 August 2015 20:53 |
Kingsley Coach
Messages: 2691
Registered: March 2009
Location: Nova Scotia Canada
Karma: -34
|
Senior Member |
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|
Ken and Jim
Thank you for the info.
My current exhaust is rotted to granular pieces ...the pipes and mufflers
and the Y piece. I have a perfectly good header system with mufflers
attached and a Y piece as part of the whole thing. I have a 403 and the
header system is from a 455 so I'm hoping it all comes together as I have
been told in the past.
Unfortunately for me, I have Dave Lenzi's copper gaskets on my stock
manifolds that are totally without a whisper.. but I don't think they will
be of any use to me with headers. A shame really!
I now forget what I was going to say...or maybe I've said it.
I'm a little distracted by my granddaughter who sat beside me tonight
reading a book for over an hour. She brought the book with her to visit us.
She slowly scanned and with the tip of one finger, turned the pages. Almost
an hour went by and she asked Lorraine if she had a bookmark she could
borrow. I thought to myself...Nice! Her 2 siblings were watching cartoons
on TV.
There is one little item I should mention...she's 5 and can't read !
Perhaps another 'cold one' will help my header memory and help me figure
out what goes through a five year old's head...
Mike in NS
On Sun, Aug 2, 2015 at 7:25 PM, James Hupy wrote:
> Due to the fact that they improve the flow of gasses from the engine, the
> net result can SOMETIMES be a lean condition at certain rpms. Not an exact
> science with GMC coaches at the rpm most of us run. Need plug checks and
> egt probes to be sure. If the end result in your case is a lean mixture,
> then, yes, the headers will run hotter than iron manifolds. We usually do
> not rev high enough to see any value in headers, especially large tube
> ones. Sure do sound neat though. Whatever that's worth. Jim Bounds ran
> quite a few dyno tests on Drew Koba engines. Results are on his Web site.
> Jim Hupy
> Salem, Or
> 78 Gmc ROYALE 403
> On Aug 2, 2015 3:14 PM, "Kingsley Coach" wrote:
>
>> Speaking of headers, Jim...you wrote.." Headers have, for the most part
> if
>> the engine is properly tuned after they
>> have been added..."
>> Is there something I should do 'after' I add headers this week ??
>>
>> Mike in NS
>>
>> On Sun, Aug 2, 2015 at 5:57 PM, D C _Mac_ Macdonald
>> wrote:
>>
>>> Spark Plug Wires from Magnecore would probably also do you just fine!
>>>
>>> ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
>>> ~~ ~ D C "Mac" Macdonald ~ ~~
>>> ~ ~ Amateur Radio - K2GKK ~ ~
>>> ~ ~ Since 30 November '53 ~ ~
>>> ~ ~ USAF and FAA, Retired ~ ~
>>> ~ Member GMCMI and Classics ~
>>> ~ ~ ~ Oklahoma City, OK ~ ~ ~
>>> ~~ ~ ~ "The Money Pit" ~ ~ ~~
>>> ~ ~ ~ ~ TZE166V101966 ~ ~ ~ ~
>>> ~ ~ ~ '76 ex-Palm Beach ~ ~ ~
>>> ~~ k2gkk + hotmail dot com ~~
>>> ~ www.gmcmhphotos.com/okclb ~
>>> ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
>>> ______________
>>> |[ ]~~~[][ ][]\
>>> "--OO--[]---O-"
>>>
>>>
>>>
>>>> From: robmueller@iinet.net.au
>>>> To: gmclist@list.gmcnet.org
>>>> Date: Mon, 3 Aug 2015 06:34:14 +1000
>>>> Subject: Re: [GMCnet] Should I wrap headers to reduce engine
>>> compartment heat?
>>>>
>>>> IIRC the headers come with instructions NOT to wrap them, if you do
>> they
>>> will rust out much more quickly than if you don't.
>>>>
>>>> Get a set of spark plug wires from Springfield Ignition:
>>>>
>>>> http://www.springfield-ignition.com/plug-wires/
>>>>
>>>> Regards,
>>>> Rob M.
>>>> The Pedantic Mechanic
>>>>
>>>> -----Original Message-----
>>>> From: Advanced Concept Energy Solutions
>>>>
>>>> I am just about finished insulating and adding sound deadening to the
>>> engine compartment and I am staring at the headers being just
>>>> a few inches from the plug wires and not far from the HEI and.
>> Wondering
>>> should I wrap the headers or otherwise put a heat shield in
>>>> between them and the ignition components. Just don't know what the
> long
>>> term effects are on exhaust system and headers. Has anybody
>>>> had any good or bad experiences with this?
>>>>
>>>> Jon Darcy
>>>>
>>>>
>>>> _______________________________________________
>>>> 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
>>>
>>
>>
>>
>> --
>> Michael Beaton
>> 1977 Kingsley 26-11
>> 1977 Eleganza II 26-3
>> Antigonish, NS
>>
>> Life is too short to hold a grudge; slash some tires and call it even !
>> _______________________________________________
>> 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
>
--
Michael Beaton
1977 Kingsley 26-11
1977 Eleganza II 26-3
Antigonish, NS
Life is too short to hold a grudge; slash some tires and call it even !
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| Re: [GMCnet] Should I wrap headers to reduce engine compartment heat? [message #283797 is a reply to message #283796] |
Sun, 02 August 2015 20:56 |
emerystora
Messages: 4442
Registered: January 2004
Karma: 13
|
Senior Member |
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You are correct that Dave Lenzi's copper gaskets don't work with headers but the ones from Mr . Gasket fit well. I got mine at Autozone.
Emery Stors
> On Aug 2, 2015, at 7:53 PM, Kingsley Coach wrote:
>
> Ken and Jim
> Thank you for the info.
> My current exhaust is rotted to granular pieces ...the pipes and mufflers
> and the Y piece. I have a perfectly good header system with mufflers
> attached and a Y piece as part of the whole thing. I have a 403 and the
> header system is from a 455 so I'm hoping it all comes together as I have
> been told in the past.
> Unfortunately for me, I have Dave Lenzi's copper gaskets on my stock
> manifolds that are totally without a whisper.. but I don't think they will
> be of any use to me with headers. A shame really!
> I now forget what I was going to say...or maybe I've said it.
> I'm a little distracted by my granddaughter who sat beside me tonight
> reading a book for over an hour. She brought the book with her to visit us.
> She slowly scanned and with the tip of one finger, turned the pages. Almost
> an hour went by and she asked Lorraine if she had a bookmark she could
> borrow. I thought to myself...Nice! Her 2 siblings were watching cartoons
> on TV.
> There is one little item I should mention...she's 5 and can't read !
>
> Perhaps another 'cold one' will help my header memory and help me figure
> out what goes through a five year old's head...
>
> Mike in NS
>
>> On Sun, Aug 2, 2015 at 7:25 PM, James Hupy wrote:
>>
>> Due to the fact that they improve the flow of gasses from the engine, the
>> net result can SOMETIMES be a lean condition at certain rpms. Not an exact
>> science with GMC coaches at the rpm most of us run. Need plug checks and
>> egt probes to be sure. If the end result in your case is a lean mixture,
>> then, yes, the headers will run hotter than iron manifolds. We usually do
>> not rev high enough to see any value in headers, especially large tube
>> ones. Sure do sound neat though. Whatever that's worth. Jim Bounds ran
>> quite a few dyno tests on Drew Koba engines. Results are on his Web site.
>> Jim Hupy
>> Salem, Or
>> 78 Gmc ROYALE 403
>>> On Aug 2, 2015 3:14 PM, "Kingsley Coach" wrote:
>>>
>>> Speaking of headers, Jim...you wrote.." Headers have, for the most part
>> if
>>> the engine is properly tuned after they
>>> have been added..."
>>> Is there something I should do 'after' I add headers this week ??
>>>
>>> Mike in NS
>>>
>>> On Sun, Aug 2, 2015 at 5:57 PM, D C _Mac_ Macdonald
>>> wrote:
>>>
>>>> Spark Plug Wires from Magnecore would probably also do you just fine!
>>>>
>>>> ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
>>>> ~~ ~ D C "Mac" Macdonald ~ ~~
>>>> ~ ~ Amateur Radio - K2GKK ~ ~
>>>> ~ ~ Since 30 November '53 ~ ~
>>>> ~ ~ USAF and FAA, Retired ~ ~
>>>> ~ Member GMCMI and Classics ~
>>>> ~ ~ ~ Oklahoma City, OK ~ ~ ~
>>>> ~~ ~ ~ "The Money Pit" ~ ~ ~~
>>>> ~ ~ ~ ~ TZE166V101966 ~ ~ ~ ~
>>>> ~ ~ ~ '76 ex-Palm Beach ~ ~ ~
>>>> ~~ k2gkk + hotmail dot com ~~
>>>> ~ www.gmcmhphotos.com/okclb ~
>>>> ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
>>>> ______________
>>>> |[ ]~~~[][ ][]\
>>>> "--OO--[]---O-"
>>>>
>>>>
>>>>
>>>> > From: robmueller@iinet.net.au
>>>> > To: gmclist@list.gmcnet.org
>>>> > Date: Mon, 3 Aug 2015 06:34:14 +1000
>>>> > Subject: Re: [GMCnet] Should I wrap headers to reduce engine
>>>> compartment heat?
>>>> >
>>>> > IIRC the headers come with instructions NOT to wrap them, if you do
>>> they
>>>> will rust out much more quickly than if you don't.
>>>> >
>>>> > Get a set of spark plug wires from Springfield Ignition:
>>>> >
>>>> > http://www.springfield-ignition.com/plug-wires/
>>>> >
>>>> > Regards,
>>>> > Rob M.
>>>> > The Pedantic Mechanic
>>>> >
>>>> > -----Original Message-----
>>>> > From: Advanced Concept Energy Solutions
>>>> >
>>>> > I am just about finished insulating and adding sound deadening to the
>>>> engine compartment and I am staring at the headers being just
>>>> > a few inches from the plug wires and not far from the HEI and.
>>> Wondering
>>>> should I wrap the headers or otherwise put a heat shield in
>>>> > between them and the ignition components. Just don't know what the
>> long
>>>> term effects are on exhaust system and headers. Has anybody
>>>> > had any good or bad experiences with this?
>>>> >
>>>> > Jon Darcy
>>>> >
>>>> >
>>>> > _______________________________________________
>>>> > 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
>>>
>>>
>>>
>>> --
>>> Michael Beaton
>>> 1977 Kingsley 26-11
>>> 1977 Eleganza II 26-3
>>> Antigonish, NS
>>>
>>> Life is too short to hold a grudge; slash some tires and call it even !
>>> _______________________________________________
>>> 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
>
>
>
> --
> Michael Beaton
> 1977 Kingsley 26-11
> 1977 Eleganza II 26-3
> Antigonish, NS
>
> Life is too short to hold a grudge; slash some tires and call it even !
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
_______________________________________________
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| Re: [GMCnet] Should I wrap headers to reduce engine compartment heat? [message #283800 is a reply to message #283742] |
Sun, 02 August 2015 22:09 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
|
Senior Member |
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|
I only have experience with wrapped exhausts on aircraft. If the aircraft is used almost daily then the wrapped headers and exhaust work OK. If the aircraft is parked more than one day at a time, outside or in an unheated hangar, then the wrapping accumulates ambient moisture promoting rust to the wrapped item. So we next to never wrap headers and exhaust systems. I believe the same rule and conditions should apply to a GMC that is not driven every day.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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| Re: [GMCnet] Should I wrap headers to reduce engine compartment heat? [message #283808 is a reply to message #283805] |
Mon, 03 August 2015 05:28 |
Kingsley Coach
Messages: 2691
Registered: March 2009
Location: Nova Scotia Canada
Karma: -34
|
Senior Member |
|
|
Thanks Emery...appreciated !
Ken..although I wasn't at the opening of this discussion, I won't be
wrapping but going with Ken's suggestion of wrapping everything the area
Larry...my manifolds are in perfect condition and I would be changing to
manifolds because I have that system already from my donor coach . The std
system would cost me money to replace everything. My Scottish ancestry
says go with the cheapest
Mike in NS
On Mon, Aug 3, 2015 at 2:01 AM, Larry Davick wrote:
> Are your cast iron exhaust manifolds cracked or otherwise unserviceable?
> You’ll not gain much from headers with our low-RPM motors, so changing good
> manifolds might not be the best bang for the buck.
>
> Larry Davick
> A Mystery Machine
> 1976(ish) Palm Beach
> Fremont, CA
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
--
Michael Beaton
1977 Kingsley 26-11
1977 Eleganza II 26-3
Antigonish, NS
Life is too short to hold a grudge; slash some tires and call it even !
_______________________________________________
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