Home  |  Forums  |  914 Info  |  Blogs
 
914World.com - The fastest growing online 914 community!
 
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.
 

Welcome Guest ( Log In | Register )

 
 Reply to this topicStart new topic
> under carriage flaps, curved flaps
minnesota loon
post Aug 11 2013, 12:08 PM
Post #1


Member
**

Group: Members
Posts: 111
Joined: 30-September 07
From: white bear lake mn.
Member No.: 8,173
Just before the engine are flaps that would seem to deflect air down to the ground. Is this for cooling? It would seem to rough up the air flow just before the oil cooler. Would it run cooler if these were removed? Any thoughts or comments?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
mepstein
post Aug 11 2013, 12:28 PM
Post #2


914-6 GT in waiting
***************

Group: Members
Posts: 19,272
Joined: 19-September 09
From: Landenberg, PA/Wilmington, DE
Member No.: 10,825
Region Association: MidAtlantic Region
QUOTE(minnesota loon @ Aug 11 2013, 02:08 PM) *

Just before the engine are flaps that would seem to deflect air down to the ground. Is this for cooling? It would seem to rough up the air flow just before the oil cooler. Would it run cooler if these were removed? Any thoughts or comments?


They help cool the car by creating a low pressure area in the engine bay. Added by the factory to later cars to improve engine cooling.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Mark Henry
post Aug 11 2013, 12:28 PM
Post #3


that's what I do!
***************

Group: Members
Posts: 20,065
Joined: 27-December 02
From: Port Hope, Ontario
Member No.: 26
Region Association: Canada
QUOTE(minnesota loon @ Aug 11 2013, 02:08 PM) *

Just before the engine are flaps that would seem to deflect air down to the ground. Is this for cooling? It would seem to rough up the air flow just before the oil cooler. Would it run cooler if these were removed? Any thoughts or comments?

Runs cooler with them, that's why the factory put them there.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
toadman
post Aug 11 2013, 12:31 PM
Post #4


Member
**

Group: Members
Posts: 168
Joined: 26-December 05
From: Cincinnati, OH
Member No.: 5,316
Do not remove them. When the car is moving they create a disturbance in airflow underneath the car and aid cooling of the engine, transmission and exhaust. Early cars did not have them and ran hotter. They were added by the factory in later model years to aid cooling.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
r_towle
post Aug 11 2013, 02:43 PM
Post #5


Custom Member
***************

Group: Members
Posts: 24,574
Joined: 9-January 03
From: Taxachusetts
Member No.: 124
Region Association: North East States
It actually creates a low pressure area that aids the fan to push the air out the bottom of the tin.

Rich
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
minnesota loon
post Aug 13 2013, 08:10 AM
Post #6


Member
**

Group: Members
Posts: 111
Joined: 30-September 07
From: white bear lake mn.
Member No.: 8,173
Thanks all. I thought it had a science to it.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
ConeDodger
post Aug 13 2013, 08:12 AM
Post #7


Apex killer!
***************

Group: Members
Posts: 23,588
Joined: 31-December 04
From: Tahoe Area
Member No.: 3,380
Region Association: Northern California
QUOTE(minnesota loon @ Aug 13 2013, 06:10 AM) *

Thanks all. I thought it had a science to it.


It might not be a bad idea to check the science though. Some of us have low spoilers up front that might already be creating a low pressure area... (IMG:style_emoticons/default/smile.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
tracks914
post Aug 13 2013, 10:10 AM
Post #8


Canadian Member
****

Group: Benefactors
Posts: 2,083
Joined: 15-January 03
From: Timmins, Ontario, Canada
Member No.: 153
Region Association: None
Next chance I get I'll put it into the Ferrari wind tunnel and try it with and without flaps...... oh wait, I don't have access to it. (IMG:style_emoticons/default/lol-2.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Spoke
post Aug 13 2013, 11:27 AM
Post #9


Jerry
*****

Group: Members
Posts: 6,978
Joined: 29-October 04
From: Allentown, PA
Member No.: 3,031
Region Association: None
QUOTE

It actually creates a low pressure area that aids the fan to push the air out the bottom of the tin.


You could extend the flap all the way to ground and around the engine, turn the fan around to blow upwards and increase downforce...



Attached image(s)
Attached Image
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
ThePaintedMan
post Aug 13 2013, 11:31 AM
Post #10


Advanced Member
****

Group: Members
Posts: 3,886
Joined: 6-September 11
From: St. Petersburg, FL
Member No.: 13,527
Region Association: South East States
This is one of those things that I have always thought Mark (Mikey914) should tackle. Should be a piece of cake to come up with the tooling for something like that. Doesn't even have to look exactly like the original, just be functional. Whaddaya say Mark? We all know you have TONS of free time on your hands these days (IMG:style_emoticons/default/smile.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Elliot Cannon
post Aug 13 2013, 01:23 PM
Post #11


914 Guru
*****

Group: Retired Members
Posts: 8,487
Joined: 29-December 06
From: Paso Robles Ca. (Central coast)
Member No.: 7,407
Region Association: None
QUOTE(Spoke @ Aug 13 2013, 10:27 AM) *

QUOTE

It actually creates a low pressure area that aids the fan to push the air out the bottom of the tin.


You could extend the flap all the way to ground and around the engine, turn the fan around to blow upwards and increase downforce...



And suck up all the gravel on the road and blow it on the cars behind you. (IMG:style_emoticons/default/happy11.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Drums66
post Aug 13 2013, 01:29 PM
Post #12


914 Rudiments
*****

Group: Members
Posts: 5,321
Joined: 15-January 03
From: Coronado,Cali
Member No.: 151
Region Association: Southwest Region
QUOTE(minnesota loon @ Aug 11 2013, 11:08 AM) *

Just before the engine are flaps that would seem to deflect air down to the ground. Is this for cooling? It would seem to rough up the air flow just before the oil cooler. Would it run cooler if these were removed? Any thoughts or comments?


....You remind me of the cat that wanted to throw away his cooling tin?
don't do that! (IMG:style_emoticons/default/idea.gif)

(IMG:style_emoticons/default/bye1.gif) (IMG:style_emoticons/default/blowup.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
SLITS
post Aug 13 2013, 01:31 PM
Post #13


"This Utah shit is HARSH!"
**********

Group: Benefactors
Posts: 13,602
Joined: 22-February 04
From: SoCal Mountains ...
Member No.: 1,696
Region Association: None
The 2J "sucker car" was banned from CanAm for that reason, plus the heat it threw off on the driver's behind it.

If they would have had any balls they would have been in front of Hall & Sharp and wouldn't have complained. (IMG:style_emoticons/default/av-943.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
michael7810
post Aug 13 2013, 01:40 PM
Post #14


Senior Member
***

Group: Members
Posts: 1,081
Joined: 6-June 11
From: Scottsdale, AZ
Member No.: 13,164
Region Association: Southwest Region
I recently installed the flaps on my 72. I only have 1 data point but on a long grade to work the CHT always hit 400F and now with the flaps it peaked at 380F. Only 1 test but going in the right direction.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
r_towle
post Aug 13 2013, 02:05 PM
Post #15


Custom Member
***************

Group: Members
Posts: 24,574
Joined: 9-January 03
From: Taxachusetts
Member No.: 124
Region Association: North East States
QUOTE(michael7810 @ Aug 13 2013, 03:40 PM) *

I recently installed the flaps on my 72. I only have 1 data point but on a long grade to work the CHT always hit 400F and now with the flaps it peaked at 380F. Only 1 test but going in the right direction.

ever removed the head tin and cleaned out all the fins?

RIch
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
michael7810
post Aug 13 2013, 06:01 PM
Post #16


Senior Member
***

Group: Members
Posts: 1,081
Joined: 6-June 11
From: Scottsdale, AZ
Member No.: 13,164
Region Association: Southwest Region
Fins are clean. Engine only has 6K miles but I'm talking about Phoenix and the air temp is over 100F. I don't completely trust the accuracey of my gauge; it's a Micro 1000 with 2 needles and the left (#1) side always reads 30-50F cooler than the right side (#3). The temp delta is consistent even when the engine is just started (CHT <100F). I tried checking them with an infrared thermometer but got readings all over the place. I figure as long as it runs good and AF mixture is OK I'll just use the temp to let me know when something changes.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
« Next Oldest · 914World Garage · Next Newest »
 

Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:

 

Display Mode: Standard · Switch to: Linear+ · Switch to: Outline

Track this topic · Email this topic · Print this topic · Subscribe to this forum

- Lo-Fi Version Time is now: 17th May 2024 - 01:56 PM
Invision Power Board v9.1.4 © 2024  IPS, Inc.
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 ...