 Flapper doors on fan shroud, MIA |
|
|
|
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. |
|
|
  |
| PanelBilly |
 Mar 28 2011, 08:29 AM
Post
#1
|
|
914 Guru  Group: Members Posts: 5,805 Joined: 23-July 06 From: Kent, Wa Member No.: 6,488 Region Association: Pacific Northwest 
 |
I mocked up the exhaust in hopes of finding out what parts were missing and I can't locate the little flapper doors and the pins they hang from. I assume they are to prevent the air from flowwing the wrong way. Are they bimportant? Also I see there are gaskets on the flange between the shroud (same place as the flappers) and the "S" pipe that connects ti the HEs. The gasket is something like $60! On my other car I don't recall a gasket at all. Are these important?
|
   |
 
|
| Tom_T |
Mar 28 2011, 09:59 AM
Post
#2
|
|
TMI.... Group: Members Posts: 8,318 Joined: 19-March 09 From: Orange, CA Member No.: 10,181 Region Association: Southern California
|
Yeah - it's also part of the air cooling, cuz the flapper sends the hot air pushed through the HEs either into the cabin or ejects it our the "Hat" top as hot air into the airstream under the car (or a combination of both depending on the flapper setting). If they're not there or the line is capped off, then it won't flow out the hat as well due to internal turbulence apparently, plus no cabin heat.
Those who cap off at both J-tubes or the ends of the HEs are just asking for more heat to build up around the engine, plus back pressure on the impeller fan. IIRC part of the reason that the 75-76 914s went to the 2 sided heater hoses was to help cool the hotter running 1.8 & 2.0 with the added EGR, Crap-a-lytic converter & other smog control stuff which made them run a bit hotter. May just be a 914 urban legend, but I think that was the case anyway! (IMG:style_emoticons/default/biggrin.gif) |
|
|
|
| detoxcowboy |
Mar 28 2011, 11:22 AM
Post
#3
|
|
Senior Member Group: Members Posts: 1,294 Joined: 30-January 08 Member No.: 8,642 Region Association: Africa |
The gaskets are nice but I ran without them and with ee, not a big difference if noticed at all.. you can get flapper door repros and originals here.. pins you can make out of cut in 1/2 cotter pins..
http://www.germansupply.com/home/customer/...p?substring=914 |
|
|
|
|
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 14th May 2024 - 01:37 AM |
Invision Power Board
v9.1.4 © 2024 IPS, Inc.