What is this under my car, Duct tape covering hole? |
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
What is this under my car, Duct tape covering hole? |
tmc914 |
Jul 8 2018, 05:39 PM
Post
#1
|
Member Group: Members Posts: 116 Joined: 24-September 17 From: Lowell, MA Member No.: 21,452 Region Association: North East States |
Hi all, trying to get my car all sorted out and was wondering if anyone knows what this duct tape is covering up? There is one on the passenger side and another on the drivers side under the car near the engine. Is this something to do with the heating system? The heating system doesn't work and I know I will need to add parts like hoses and flappers, the car does have heat exchangers.
|
914Sixer |
Jul 8 2018, 05:48 PM
Post
#2
|
914 Guru Group: Members Posts: 8,989 Joined: 17-January 05 From: San Angelo Texas Member No.: 3,457 Region Association: Southwest Region |
Yep, missing both S pipes, J pipes and probably the heat control flaps. Not good for engine and alternator cooling blocked up with duct tape.
|
tmc914 |
Jul 8 2018, 06:10 PM
Post
#3
|
Member Group: Members Posts: 116 Joined: 24-September 17 From: Lowell, MA Member No.: 21,452 Region Association: North East States |
Should I remove the duct tape and put cheese cloth instead? |
era vulgaris |
Jul 9 2018, 07:33 PM
Post
#4
|
J is for Genius Group: Members Posts: 982 Joined: 10-November 13 From: Raleigh, NC Member No.: 16,629 Region Association: South East States |
Should I remove the duct tape and put cheese cloth instead? I would leave them uncovered. I recall reading that Jake Raby found that blocking them causes turbulence inside the fan shroud, which negatively impacts cooling. The fan shroud was designed for air to exit there. Let the air exit as designed. Correct me if I am wrong, but that is the bottom of the fan shroud that is supposed to have 2 small metal flaps, one on each side. It has nothing to do with the heating from the heat exchangers. No ducting gets attached there. Ducting does get attached there. There's a Y branch piece that connects from the fan shroud to the heat exchanger. The branch piece also connects to the vertical J-tube which brings the air from the electric blower in the engine compartment to the heat exchanger. |
worn |
Jul 9 2018, 08:40 PM
Post
#5
|
can't remember Group: Members Posts: 3,290 Joined: 3-June 11 From: Madison, WI Member No.: 13,152 Region Association: Upper MidWest |
I would leave them uncovered. I recall reading that Jake Raby found that blocking them causes turbulence inside the fan shroud, which negatively impacts cooling. The fan shroud was designed for air to exit there. Let the air exit as designed But that isn’t how it was designed. The design included back pressure from the heating system. I am reminded of the never dying myth with water cooled engines that slower flow through the radiator is better because it gives more time for the water to cool. Nope. But that is another topic. As is the fact that a centrifugal pump uses the least energy when valves completely block outflow. |
Lo-Fi Version | Time is now: 27th September 2024 - 01:20 PM |
All rights reserved 914World.com © since 2002 |
914World.com is the fastest growing online 914 community! We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ... |