Home » Public Forums » GMCnet » Small fans behind engine compartment side vents?
| Small fans behind engine compartment side vents? [message #346800] |
Sat, 24 August 2019 16:34  |
6cuda6
Messages: 975
Registered: June 2019
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Anyone ever put fans behind the engine compartment vents to help ride the engine fumes/heat after shut-down (perhaps while in traffic as well)? Kinda like venting the engine compartment on a carburated inboard engined boat.
Rich Mondor,
Brockville, ON
77 Hughes 2600
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| Re: [GMCnet] Small fans behind engine compartment side vents? [message #346801 is a reply to message #346800] |
Sat, 24 August 2019 17:10  |
James Hupy
Messages: 6806
Registered: May 2010
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Yes, it's called a bilge vent evacuation fan. Yes, I have seen a couple
used on Motor Homes. Not a bad idea, but it would pull fresh air into the
engine compartment, I might consider whether it is a good thing in the
event of an engine compartment fire.
Jim Hupy
Salem, Oregon
On Sat, Aug 24, 2019, 3:02 PM tonka6cuda6--- via Gmclist <
gmclist@list.gmcnet.org> wrote:
> Anyone ever put fans behind the engine compartment vents to help ride the
> engine fumes/heat after shut-down (perhaps while in traffic as well)? Kinda
> like venting the engine compartment on a carburated inboard engined boat.
> --
> Rich Mondor,
>
> Brockville, ON
>
> 77 Hughes 2600
>
> _______________________________________________
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| Re: [GMCnet] Small fans behind engine compartment side vents? [message #346810 is a reply to message #346801] |
Sat, 24 August 2019 21:17 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
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Seen that use back in 1985, but the vents w/o the blower won out.
On Sat, Aug 24, 2019 at 3:09 PM James Hupy via Gmclist <
gmclist@list.gmcnet.org> wrote:
> Yes, it's called a bilge vent evacuation fan. Yes, I have seen a couple
> used on Motor Homes. Not a bad idea, but it would pull fresh air into the
> engine compartment, I might consider whether it is a good thing in the
> event of an engine compartment fire.
> Jim Hupy
> Salem, Oregon
>
> On Sat, Aug 24, 2019, 3:02 PM tonka6cuda6--- via Gmclist gmclist@list.gmcnet.org> wrote:
>
>> Anyone ever put fans behind the engine compartment vents to help ride the
>> engine fumes/heat after shut-down (perhaps while in traffic as well)?
> Kinda
>> like venting the engine compartment on a carburated inboard engined boat.
>> --
>> Rich Mondor,
>>
>> Brockville, ON
>>
>> 77 Hughes 2600
>>
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>
> _______________________________________________
> GMCnet mailing list
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--
Jim Kanomata
Applied/GMC, Newark,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: [GMCnet] Small fans behind engine compartment side vents? [message #346821 is a reply to message #346810] |
Sun, 25 August 2019 09:53 |
6cuda6
Messages: 975
Registered: June 2019
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Do the vents really work well? Im more interested in the time "just after" the engine is shut off and everything is cooling down....so all the fumes are getting trapped under the engine compartment area because the wife hates that "old car carbon/fuel" smell.
Rich Mondor,
Brockville, ON
77 Hughes 2600
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| Re: [GMCnet] Small fans behind engine compartment side vents? [message #346823 is a reply to message #346821] |
Sun, 25 August 2019 10:21 |
tphipps
Messages: 3005
Registered: August 2004
Location: Spanish Fort, AL
Karma: 9
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this was done on my first GMC. It had an old school set of relays and thermostats to control the fan on and off cycle. First time it engaged, I was putting gas in the coach. Fan came on, blew hot air all over my leg. Thought the coach caught fire. I changed over to a driver controlled dash switch. When you turned on the fan, you could actually see the water temperature gauge move. This as a nice improvement, especially down here in the Deep South.
If I would consider doing this again, I would redesign the controls to be based on an Ardunio SFB and include a flame detector for fire cut-off.
Axial fans are available at any good marine supply store or on-line.
Tom
2012 Phoenix Cruiser model 2552
KA4CSG
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| Re: [GMCnet] Small fans behind engine compartment side vents? [message #346824 is a reply to message #346821] |
Sun, 25 August 2019 10:40 |
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ljdavick
Messages: 3548
Registered: March 2007
Location: Fremont, CA
Karma: -3
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I can’t speak to the effectiveness of engine bay fans but we (she?) were not too happy with the stink of shutting down a hot 455. Our solution was expensive but SOOOO worth it. I replace the carb with a Howell kit including the electronically controlled distributer and an EBL.
We had chased this for the longest time, starting with safety - new fuel lines, then an electric fuel pump, carburetor repair after repair, no luck. Carburetors are just not my thing anyway, so I finally came to the conclusion that we’d need to replace the carburetor with either a quality Patterson unit or go with EFI. No looking back, this is a great upgrade. No more stink when we stop and she purrs like a happy kitten.
JWID.
Larry Davick
A Mystery Machine
1976(ish) Palm Beach
Fremont, CA
Howell EFI + EBL + Electronic Distributor
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Larry Davick
A Mystery Machine
1976(ish) Palm Beach
Fremont, Ca
Howell EFI + EBL + Electronic Dizzy
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| Re: [GMCnet] Small fans behind engine compartment side vents? [message #346828 is a reply to message #346824] |
Sun, 25 August 2019 11:19 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
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If you have replaced all the fuel and Vent lines you will not get the smell.
So many have felt they know the emissions system and have screwed it up.
I’m a firm believer the emission system does not hurt performance.
On Sun, Aug 25, 2019 at 8:41 AM Larry Davick via Gmclist <
gmclist@list.gmcnet.org> wrote:
> I can’t speak to the effectiveness of engine bay fans but we (she?) were
> not too happy with the stink of shutting down a hot 455. Our solution was
> expensive but SOOOO worth it. I replace the carb with a Howell kit
> including the electronically controlled distributer and an EBL.
>
> We had chased this for the longest time, starting with safety - new fuel
> lines, then an electric fuel pump, carburetor repair after repair, no
> luck. Carburetors are just not my thing anyway, so I finally came to the
> conclusion that we’d need to replace the carburetor with either a quality
> Patterson unit or go with EFI. No looking back, this is a great upgrade.
> No more stink when we stop and she purrs like a happy kitten.
>
> JWID.
>
> Larry Davick
> A Mystery Machine
> 1976(ish) Palm Beach
> Fremont, CA
> Howell EFI + EBL + Electronic Distributor
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
--
Jim Kanomata
Applied/GMC, Newark,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: [GMCnet] Small fans behind engine compartment side vents? [message #346829 is a reply to message #346828] |
Sun, 25 August 2019 12:54 |
6cuda6
Messages: 975
Registered: June 2019
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jimk wrote on Sun, 25 August 2019 12:19If you have replaced all the fuel and Vent lines you will not get the smell.
So many have felt they know the emissions system and have screwed it up.
I'm a firm believer the emission system does not hurt performance.
On Sun, Aug 25, 2019 at 8:41 AM Larry Davick via Gmclist <
gmclist@list.gmcnet.org> wrote:
> I can't speak to the effectiveness of engine bay fans but we (she?) were
> not too happy with the stink of shutting down a hot 455. Our solution was
> expensive but SOOOO worth it. I replace the carb with a Howell kit
> including the electronically controlled distributer and an EBL.
>
> We had chased this for the longest time, starting with safety - new fuel
> lines, then an electric fuel pump, carburetor repair after repair, no
> luck. Carburetors are just not my thing anyway, so I finally came to the
> conclusion that we'd need to replace the carburetor with either a quality
> Patterson unit or go with EFI. No looking back, this is a great upgrade.
> No more stink when we stop and she purrs like a happy kitten.
>
> JWID.
>
> Larry Davick
> A Mystery Machine
> 1976(ish) Palm Beach
> Fremont, CA
> Howell EFI + EBL + Electronic Distributor
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
--
Jim Kanomata
Applied/GMC, Newark,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
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Agreed Jim....i have no need to alter the emission equipment. I do have to upgrade all my fuel lines and vent lines but want to get as much heat out as possible.
Seeing as how im upgrading things and the coach wont be back on the road till next year do to my work schedule nows the time to do all these things.
Rich Mondor,
Brockville, ON
77 Hughes 2600
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| Re: Small fans behind engine compartment side vents? [message #346843 is a reply to message #346800] |
Sun, 25 August 2019 17:43 |
JohnL455
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
Karma: 12
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Senior Member |
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"I'm a firm believer the emission system does not hurt performance."
I agree with you JimK. So much stuff gets ripped out because people don't understand it. No downside to good evap emissions control. Thank goodness we don't even have EGR as people would want to remove that to "go faster". They don't realize it's out of circuit at heavy throttle, just like AC clutch is off at heavy throttle on cars since the mid 80s.
John Lebetski
Woodstock, IL
77 Eleganza II
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| Re: Small fans behind engine compartment side vents? [message #347083 is a reply to message #346800] |
Fri, 30 August 2019 01:17 |
GatsbysCruise
Messages: 261
Registered: January 2017
Location: Waukegan, Illinois
Karma: 3
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I read, ON HERE, someone bought an electric radiator fan and installed it to blow OUT of the front grill, it was mounted in front of the radiator.
I think he had a switch to turn it on, and a thermostat that shut it down when the engine compartment cooled down.
Said it didn't take long, 10, 15 minutes to pull all that hot air out and shut down.
Someone probably knows who this was. Be careful though, those electric radiator fans are usually high amp motors so know what you are getting into.
GatsbysCruise. \
74GMC260 Former Glacier Model style. \
Waukegan, Illinois \ Keep those MiniDiscs Spinning \ MY GREYHOUND IS FASTER THAN YOUR HONOR ROLL STUDENT \ WindowsXP-Win7-Win8.1-UBUNTU STUDIO - UBUNTU VOYAGER - Berzin Auto Center
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| Re: [GMCnet] Small fans behind engine compartment side vents? [message #347118 is a reply to message #347083] |
Fri, 30 August 2019 16:41 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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Senior Member |
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From a serve standpoint, we hate ALL the junk people pile on the coach.
Obstruction on front of the radiator is not good as it dos more harm than
good.
On Thu, Aug 29, 2019 at 11:18 PM slc via Gmclist
wrote:
> I read, ON HERE, someone bought an electric radiator fan and installed it
> to blow OUT of the front grill, it was mounted in front of the radiator.
>
> I think he had a switch to turn it on, and a thermostat that shut it down
> when the engine compartment cooled down.
> Said it didn't take long, 10, 15 minutes to pull all that hot air out and
> shut down.
>
> Someone probably knows who this was. Be careful though, those electric
> radiator fans are usually high amp motors so know what you are getting into.
> --
> GatsbysCruise. \
> 74GMC260 Former Glacier Model style. \
> Waukegan, Illinois \ Keep those MiniDiscs Spinning \ MY GREYHOUND IS
> FASTER THAN YOUR HONOR ROLL STUDENT \ WindowsXP-Win7-Win8.1-UBUNTU STUDIO -
> UBUNTU VOYAGER - Berzin Auto Center
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
--
Jim Kanomata
Applied/GMC, Newark,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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