 heat delete fan outlets, Should I cap them? |
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| mobymutt |
 May 19 2018, 10:02 AM
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#1
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Senior Member  Group: Members Posts: 550 Joined: 16-December 13 From: Kingston, Ontario, Canada Member No.: 16,770 Region Association: Canada  |
I currently don't have any of the heater stuff on my car, although I still have the stock HE's.
Should I be capping off the outlets on the engine cooling fan housing? If so, what specifically can I use for caps? I did a search, but couldn't find much. I would think this would be a pretty common question. |
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| GeorgeRud |
May 19 2018, 03:22 PM
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Advanced Member Group: Members Posts: 3,725 Joined: 27-July 05 From: Chicagoland Member No.: 4,482 Region Association: Upper MidWest |
As air is always going to flow along the easiest route, I think capping those outlets would be wisest. Then the air is all forced over the engine (which is a good thing).
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| bdstone914 |
May 20 2018, 08:35 AM
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#3
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bdstone914 Group: Members Posts: 4,520 Joined: 8-November 03 From: Riverside CA Member No.: 1,319 |
QUOTE(GeorgeRud @ May 19 2018, 02:22 PM)  As air is always going to flow along the easiest route, I think capping those outlets would be wisest. Then the air is all forced over the engine (which is a good thing). That would seem logical but consider that the fan housing outlets were designed to have air flow at all times to have air flow through the heat exchangers. I think Jake Raby found the air flow is better if the fan housing outlets are left open. Capping them off can disrupt the air flow in the shroud by having two dead ended outlets. I would run an oil temp gauge and check the difference. Bruce |
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| mobymutt |
May 20 2018, 09:28 AM
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#4
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Senior Member Group: Members Posts: 550 Joined: 16-December 13 From: Kingston, Ontario, Canada Member No.: 16,770 Region Association: Canada |
QUOTE(bdstone914 @ May 20 2018, 10:35 AM) QUOTE(GeorgeRud @ May 19 2018, 02:22 PM) As air is always going to flow along the easiest route, I think capping those outlets would be wisest. Then the air is all forced over the engine (which is a good thing). That would seem logical but consider that the fan housing outlets were designed to have air flow at all times to have air flow through the heat exchangers. I think Jake Raby found the air flow is better if the fan housing outlets are left open. Capping them off can disrupt the air flow in the shroud by having two dead ended outlets. I would run an oil temp gauge and check the difference. Bruce I've never had any of the heater tubes/fan/valves in my car, so I'm not really clear on the OEM configuration. If you aren't actively blowing heat into your car, aren't the outlets just dead-ended further downstream anyway? At those flapper valves or whatever they are called? |
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| Bartlett 914 |
May 20 2018, 10:11 AM
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#5
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Advanced Member Group: Members Posts: 2,216 Joined: 30-August 05 From: South Elgin IL Member No.: 4,707 Region Association: Upper MidWest |
QUOTE(mobymutt @ May 20 2018, 10:28 AM) QUOTE(bdstone914 @ May 20 2018, 10:35 AM) QUOTE(GeorgeRud @ May 19 2018, 02:22 PM) As air is always going to flow along the easiest route, I think capping those outlets would be wisest. Then the air is all forced over the engine (which is a good thing). That would seem logical but consider that the fan housing outlets were designed to have air flow at all times to have air flow through the heat exchangers. I think Jake Raby found the air flow is better if the fan housing outlets are left open. Capping them off can disrupt the air flow in the shroud by having two dead ended outlets. I would run an oil temp gauge and check the difference. Bruce I've never had any of the heater tubes/fan/valves in my car, so I'm not really clear on the OEM configuration. If you aren't actively blowing heat into your car, aren't the outlets just dead-ended further downstream anyway? At those flapper valves or whatever they are called? If there is nothing connected then Cap them off. In a functioning system and the heat for the cabin is off, the air will go through the heat exchangers and exit through a cap on the flapper valve |
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Posts in this topic
mobymutt heat delete fan outlets May 19 2018, 10:02 AM
mepstein It’s a good idea to cover the holes in the engin... May 19 2018, 10:15 AM
SirAndy It’s a good idea to cover the holes in the engin... May 19 2018, 10:45 AM mobymutt It's the two outlets on the fan shroud that I ... May 19 2018, 11:51 AM barefoot When I got mine it was a heat delete conversion an... May 20 2018, 06:40 AM mobymutt
When I got mine it was a heat delete conversion a... May 20 2018, 09:34 AM GeorgeRud Please report your findings running them open or c... May 20 2018, 09:20 AM mobymutt
Please report your findings running them open or ... May 20 2018, 09:33 AM |
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