 Heater Flappers for 914-6 |
|
|
|
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. |
|
|
  |
| Steve |
 Jun 28 2017, 07:15 AM
Post
#21
|
|
914 Guru  Group: Members Posts: 5,578 Joined: 14-June 03 From: Orange County, CA Member No.: 822 Region Association: Southern California 
 |
Curious if it's just a VW parts bin versus Porsche parts bin thing or is there a technical reason of one over the other? Do the concours judges look for this?
|
   |
 
|
| bdstone914 |
Jun 28 2017, 08:24 AM
Post
#22
|
|
bdstone914 Group: Members Posts: 4,515 Joined: 8-November 03 From: Riverside CA Member No.: 1,319 |
QUOTE(gereed75 @ Jun 27 2017, 05:55 AM)  Ok guys, we were wrong on this one. Was mounting my 4 flapper valves and decided to add the six holes. Put in some holes and then decided to get my six flappers out to see how big the holes are supposed to be. While looking into the hole on the four flappers I noticed cutouts in the internal tube under the "mushroom" cap (they look like the cutouts on top of a castle tower). Then I looked at the six ones to compare. The castellated cutouts on the four version are twice the size as on the six version. So it looks like the four version passes just as much air through these larger vents as the six version does through the smaller vents and the hole. Maybe the engineers did this as a slight cost savings. While cutting the vents in the tube, might as well make them bigger and skip the extra step of adding the hole? So now I have double venting flappers. Makes me wonder if I am robbing some air that would otherwise flow through the shroud to the cylinder fins? Oh the horror! The purpose of the vent holes is to prevent a high temperature build up of trapped air in the heat exchangers that would be sent to the cabin when the flappers are first opened. I doubt you are losing any significat amount of cooling air to the cylinders with added venting. Discussed this with Wayne Dempsey recently. Bruce |
|
|
|
| IAA1963 |
Jun 28 2017, 04:10 PM
Post
#23
|
|
Newbie Group: Members Posts: 46 Joined: 8-October 11 Member No.: 13,652 Region Association: None |
The /4 flapper box I have is a Porsche part, too. Not VW part.
 |
 |
|
| Steve |
Jun 28 2017, 07:12 PM
Post
#24
|
|
914 Guru Group: Members Posts: 5,578 Joined: 14-June 03 From: Orange County, CA Member No.: 822 Region Association: Southern California
|
It has a VW part number sourced from Volkswagen, but probably marked up since it has a Porsche sticker on it.
http://www.aircooled.net/vw-part-numbers-explained/ |
|
|
|
| bdstone914 |
Jun 28 2017, 07:47 PM
Post
#25
|
|
bdstone914 Group: Members Posts: 4,515 Joined: 8-November 03 From: Riverside CA Member No.: 1,319 |
QUOTE(Steve @ Jun 28 2017, 06:12 PM) It has a VW part number sourced from Volkswagen, but probably marked up since it has a Porsche sticker on it. http://www.aircooled.net/vw-part-numbers-explained/ I believe the VW Bus and 914 flapper boxes differ on the clocking of the lever. Amoung the crate of flappers I have there are at least four variations on the lever clocking. Bruce Attached thumbnail(s) 
|
|
|
|
| Steve |
Jun 28 2017, 09:37 PM
Post
#26
|
|
914 Guru Group: Members Posts: 5,578 Joined: 14-June 03 From: Orange County, CA Member No.: 822 Region Association: Southern California
|
Thanks Bruce!! Learn something new every day. I didn't know there was 914 specific VW part numbers. I heard stories about how some of the parts are interchangeable with VW, such as the window winders. Assumed that included the flapper boxes.
|
|
|
|
| Mark Henry |
Jun 29 2017, 06:24 AM
Post
#27
|
|
that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
If you have the fuel pump in the stock location, I'd take the cap off the right valve and run a Beetle pre-heat hose over and away from the pump.
|
|
|
|
|
2 User(s) are reading this topic (2 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 6th May 2024 - 07:03 AM |
Invision Power Board
v9.1.4 © 2024 IPS, Inc.