 Fan housing blockoff, no heat |
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| MattR |
 May 9 2005, 01:08 PM
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#1
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Advanced Member  Group: Members Posts: 3,279 Joined: 23-January 04 From: SF Bay Area Member No.: 1,589 Region Association: Northern California  |
From what I understand of the 914 heating system, the fan housing outlets have to be blocked off if I'm not running heat. Can anyone give suggestions on how to block these off? I could weld them up, but Im not sure about the material, and I'd like to be able to seperate the fan housing without grinding and rewelding.
(IMG:http://www.914world.com/bbs2/uploads/post-2-1110132454.jpg) (those outlets at the bottom) |
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| Mueller |
May 9 2005, 01:14 PM
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#2
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914 Freak! Group: Members Posts: 17,146 Joined: 4-January 03 From: Antioch, CA Member No.: 87 Region Association: None 
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don't laugh at my "solution" (IMG:http://www.914world.com/bbs2/html/emoticons/screwy.gif) (IMG:http://www.914world.com/bbs2/html/emoticons/smile.gif)
I cut a few pieces of wood, shoved those into the openings, used RTV for a seal and drilled a hole into the bottom of the housing and used a wood screw to secure the wood block into place (IMG:http://www.914world.com/bbs2/html/emoticons/smash.gif) |
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| tat2dphreak |
May 9 2005, 01:15 PM
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#3
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stoya, stoya, stoya Group: Benefactors Posts: 8,797 Joined: 6-June 03 From: Wylie, TX Member No.: 792 Region Association: Southwest Region  |
don't block them, everything I've heard said that causes an "air disturbance" jus leave 'em be...
or figure out a way to use them for something else... (IMG:http://www.914world.com/bbs2/html/emoticons/idea.gif) tubing to help cool the back cylinders more? |
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| MattR |
May 9 2005, 01:17 PM
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#4
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Advanced Member Group: Members Posts: 3,279 Joined: 23-January 04 From: SF Bay Area Member No.: 1,589 Region Association: Northern California |
Sorry mike, Im not putting wood in my car (IMG:http://www.914world.com/bbs2/html/emoticons/biggrin.gif)
I like the idea of tubing. I can chop up a stock piece and divert it with some rubber hose or something over the back cylinders? It probably wont do anything, but help with "peace of mind" |
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| SirAndy |
May 9 2005, 01:20 PM
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#5
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Resident German Group: Admin Posts: 41,607 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
flat piece of aluminum and epoxy works just fine ... (IMG:http://www.914world.com/bbs2/html/emoticons/wink.gif) Andy |
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| Mueller |
May 9 2005, 01:21 PM
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#6
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914 Freak! Group: Members Posts: 17,146 Joined: 4-January 03 From: Antioch, CA Member No.: 87 Region Association: None
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nobody has to know (IMG:http://www.914world.com/bbs2/html/emoticons/biggrin.gif) |
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| mike_the_man |
May 9 2005, 01:26 PM
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#7
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I like stuff! Group: Members Posts: 1,338 Joined: 11-June 03 From: Regina, Saskatchewan, Canada Member No.: 809 |
At least it won't rust! (IMG:http://www.914world.com/bbs2/html/emoticons/confused24.gif) |
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| Cap'n Krusty |
May 9 2005, 01:28 PM
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#8
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Cap'n Krusty Group: Members Posts: 10,794 Joined: 24-June 04 From: Santa Maria, CA Member No.: 2,246 Region Association: Central California |
NOT blocking them means a SUBSTANTIAL percentage of the available cooling air goes away, something you don't want to happen. Whatever method you use, they need to be blocked. The Cap'n
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| MattR |
May 9 2005, 01:31 PM
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#9
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Advanced Member Group: Members Posts: 3,279 Joined: 23-January 04 From: SF Bay Area Member No.: 1,589 Region Association: Northern California |
I dont want termites though (IMG:http://www.914world.com/bbs2/html/emoticons/rolleyes.gif) I was just thinking about maybe drilling some holes and mounting a thin piece of flexable sheet metal to the inside to maintain the contour of the housing. If it works the way I want, i'll post pics next weekend. |
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| TravisNeff |
May 9 2005, 01:33 PM
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#10
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914 Guru Group: Members Posts: 5,082 Joined: 20-March 03 From: Mesa, AZ Member No.: 447 Region Association: Southwest Region
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Duct Tape will work in a pinch!
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| Mueller |
May 9 2005, 01:35 PM
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#11
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914 Freak! Group: Members Posts: 17,146 Joined: 4-January 03 From: Antioch, CA Member No.: 87 Region Association: None
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actually, mine won't be food for termites or be subject to water damage or anything like that...I sprayed them with a silicon rubber protection coating.......... |
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| maf914 |
May 9 2005, 01:42 PM
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#12
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Not a Guru! Group: Members Posts: 3,049 Joined: 30-April 03 From: Central Florida Member No.: 632 Region Association: None
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How about filling them flush on the inside so the fan will see a smooth scroll case where the vents used to be? You could use wood or rigid foam with epoxy, or maybe urethane spray foam to form the plug in each case half then bolt it together.
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| McMark |
May 9 2005, 01:49 PM
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#13
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914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
Mine have been open 100% of the time and I haven't seen high oil temps. Even will all the spirited driving at the WCC.
Duct tape will not work. (IMG:http://www.914world.com/bbs2/html/emoticons/sad.gif) That's what I tried originally and it came off almost instantly with all the heat. If I were going to plug them off, I'd use aluminum and epoxy. |
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| TravisNeff |
May 9 2005, 02:07 PM
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#14
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914 Guru Group: Members Posts: 5,082 Joined: 20-March 03 From: Mesa, AZ Member No.: 447 Region Association: Southwest Region
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(IMG:http://www.914world.com/bbs2/html/emoticons/confused24.gif) I had mine clean and painted, duct tape held on for a phoenix summer of driving
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| Joseph Mills |
May 9 2005, 02:17 PM
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#15
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on a Sonoma diet now... Group: Members Posts: 1,482 Joined: 29-December 02 From: Oklahoma City, OK Member No.: 39 |
Mine are blocked off with duct tape. Works great.
But didn't we just have a thread discussing the fact that blocking these vents is detrimental to the air flow? It was stated that the flow needs to continue to and thru the heat exchangers? Or am I just trippin'? (IMG:http://www.914world.com/bbs2/html/emoticons/biggrin.gif) |
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| Rand |
May 9 2005, 02:19 PM
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#16
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Cross Member Group: Members Posts: 7,409 Joined: 8-February 05 From: OR Member No.: 3,573 Region Association: None |
You didn't reinforce it with bailing wire! (IMG:http://www.914world.com/bbs2/html/emoticons/laugh.gif) Help a noob... I'm missing something. Opening these flaps is how the heater is fed, right? (Ducting hot air to the cabin?) Or are these the thermostatically-controlled cooling flaps, different from the driver-controlled heater flaps? Can the flaps themselves be closed, fastened, and sealed with a heat-proof sealer around the perimeter? |
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| Mueller |
May 9 2005, 02:22 PM
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#17
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914 Freak! Group: Members Posts: 17,146 Joined: 4-January 03 From: Antioch, CA Member No.: 87 Region Association: None
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headers, no need for the ducting (IMG:http://www.914world.com/bbs2/html/emoticons/smile.gif) if running heat exchangers, I'd think you'd want some air to blow thru them for cooling of the heat exhangers........... |
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| tat2dphreak |
May 9 2005, 02:35 PM
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#18
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stoya, stoya, stoya Group: Benefactors Posts: 8,797 Joined: 6-June 03 From: Wylie, TX Member No.: 792 Region Association: Southwest Region |
why do you want to cool off your H/Es... hotter the better(to an extent), hot air moves faster... which is good for exhaust... Jake was the one saying that blocking these off is detrimental to airflow, it causes an extra turbulence which will increase head temps... the heads don't get as much air, because of the turbulence created when blocking these off... better to leave them open, with air going no where... I think something can be done to rout this air from these holes to help the head temps... I just don't know how yet... (IMG:http://www.914world.com/bbs2/html/emoticons/sad.gif) the way mcMark has it now is right, which is why he isn't seeing temps climb, (though I think it would affect the head temps, not oil if the holes are plugged) |
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| Mueller |
May 9 2005, 02:39 PM
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#19
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914 Freak! Group: Members Posts: 17,146 Joined: 4-January 03 From: Antioch, CA Member No.: 87 Region Association: None
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tell that to the poor souls that own 2.7 powered 911's in the early days, hot air goes up, straight to heads (IMG:http://www.914world.com/bbs2/html/emoticons/wacko.gif) |
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| Rand |
May 9 2005, 02:45 PM
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#20
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Cross Member Group: Members Posts: 7,409 Joined: 8-February 05 From: OR Member No.: 3,573 Region Association: None |
Trying to learn here...
Are these flaps the ones controlled by the thermostat for cooling, or by the driver to feed the heat ducts? |
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