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 )

> Alternative Ventalation, Venting on venting
forrestkhaag
post Sep 21 2015, 07:24 PM
Post #1


Senior Member
***

Group: Members
Posts: 935
Joined: 21-April 14
From: Scottsdale, Arizona
Member No.: 17,273
Region Association: Southwest Region
Alternative Ventilation
Has anyone perfected a simple interior ventilation system once the hvac is blanked off and deleted in an early 914?

My goal is to have a two-sided control total mechanical system to shove some fresh air into the cabin when the windows are up / one side or the other or both / not to the windshield but to the lower cabin only.

In SoCal, we have no humidity, no rain, no inclement weather, not one single bug, no latent dust (unless behind a 6…, and no particulate allergens or pollen, so I am thinking that the system will be an add-on to my tow bar hitch receiver tubes subtly located thru the front bumper and in to the front trunk bay… but…. from there, things get difficult due to this big bulbous thing called a fuel tank…..

I know from many removals and insertions of the tank that there is no room for two flexible tubes to make their way thru the tank cavity unless we agree to go electric.
So, maybe someone has another route for two individually mechanically controlled vent tubes to the front cabin.

Of course, the Germans used the cowl vent to drain rain and to power up ventilation to the cabin and windshield. I am looking for a simple alternative.. Any suggestions are appreciated.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
 
 Reply to this topicStart new topic
Replies(1 - 14)
SirAndy
post Sep 21 2015, 07:30 PM
Post #2


Resident German
*************************

Group: Admin
Posts: 41,680
Joined: 21-January 03
From: Oakland, Kalifornia
Member No.: 179
Region Association: Northern California
While this is from an aftermarket heater unit, the air routing over the tank would work in your case.
(IMG:style_emoticons/default/smile.gif)

(IMG:http://www.914world.com/bbs2/uploads/post-179-1422730038.jpg)
User is online!Profile CardPM
Go to the top of the page
+Quote Post
914_teener
post Sep 21 2015, 07:35 PM
Post #3


914 Guru
*****

Group: Members
Posts: 5,205
Joined: 31-August 08
From: So. Cal
Member No.: 9,489
Region Association: Southern California
I don.t get why the stock fresh air intake won.t work?

It is simple but a PITA to take apart and reinstall.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
914Mike
post Sep 22 2015, 12:11 AM
Post #4


Member
**

Group: Members
Posts: 330
Joined: 27-January 03
From: San Jose, CA
Member No.: 198
I have run oil lines under the tank through the little tunnel inside the wheel arch. Starts at the gas tank bulkhead and runs down to the footwell. Poke a few holes, add some tubes, cool your feet at least. The back side tends to be rusty anyway, very easy to perforate...
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
jim_hoyland
post Sep 22 2015, 05:07 PM
Post #5


Get that VIN ?
*****

Group: Members
Posts: 9,319
Joined: 1-May 03
From: Sunset Beach, CA
Member No.: 643
Region Association: Southern California
How about a roof vent ?


Attached image(s)
Attached Image
User is online!Profile CardPM
Go to the top of the page
+Quote Post
Kansas 914
post Sep 22 2015, 05:24 PM
Post #6


Advanced Member
****

Group: Members
Posts: 2,999
Joined: 1-March 03
From: Durango, Colorado
Member No.: 373
Region Association: Rocky Mountains
i am thinking about a bilge blower to replace the fresh air blower up front since my car has Kerry Hunter headers and no heat. It would be nice to have real forced air through the vents.

http://www.amazon.com/Rule-140-Marine-Blow...h/dp/B000O8AZ8K
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
76-914
post Sep 22 2015, 06:35 PM
Post #7


Repeat Offender & Resident Subaru Antagonist
**********

Group: Members
Posts: 13,509
Joined: 23-January 09
From: Temecula, CA
Member No.: 9,964
Region Association: Southern California
QUOTE(914_teener @ Sep 21 2015, 06:35 PM) *

I don.t get why the stock fresh air intake won.t work?

It is simple but a PITA to take apart and reinstall.

I fart with more force than that anemic OEM vent system puts out. (IMG:style_emoticons/default/dry.gif) Another BIG + when one does a water cooled conversion and AC (IMG:style_emoticons/default/biggrin.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Chris914n6
post Sep 22 2015, 06:59 PM
Post #8


Jackstands are my life.
****

Group: Members
Posts: 3,338
Joined: 14-March 03
From: Las Vegas, NV
Member No.: 431
Region Association: Southwest Region
I read and I got confuzed...

The cowl vent allows a good amount of air to pass into the cabin when restrictions are removed. As in the air box is removed.

Or... air ducts/blower in the back passing thru the longs into the cabin, or piped into the side vents.

Or take apart the flapper boxes and block off the windshield path, leaving the side vents and floor opening.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
914_teener
post Sep 22 2015, 07:22 PM
Post #9


914 Guru
*****

Group: Members
Posts: 5,205
Joined: 31-August 08
From: So. Cal
Member No.: 9,489
Region Association: Southern California
QUOTE(76-914 @ Sep 22 2015, 05:35 PM) *

QUOTE(914_teener @ Sep 21 2015, 06:35 PM) *

I don.t get why the stock fresh air intake won.t work?

It is simple but a PITA to take apart and reinstall.

I fart with more force than that anemic OEM vent system puts out. (IMG:style_emoticons/default/dry.gif) Another BIG + when one does a water cooled conversion and AC (IMG:style_emoticons/default/biggrin.gif)

(IMG:style_emoticons/default/flag.gif)

Not sayin use the little fart fan that isthe OEM.....use the same entry and exit points and higher output fans.

I have no comment about the volocity of your farts Kent....
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
7TPorsh
post Sep 22 2015, 07:30 PM
Post #10


7T Porsh
****

Group: Members
Posts: 2,691
Joined: 27-March 06
From: Glendale Ca
Member No.: 5,782
Region Association: Southern California
QUOTE(Kansas 914 @ Sep 22 2015, 04:24 PM) *

i am thinking about a bilge blower to replace the fresh air blower up front since my car has Kerry Hunter headers and no heat. It would be nice to have real forced air through the vents.

http://www.amazon.com/Rule-140-Marine-Blow...h/dp/B000O8AZ8K



oooh, I like that! Run one through the front for cool air and one through an oil cooler for hot.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
barefoot
post Sep 22 2015, 07:43 PM
Post #11


Senior Member
***

Group: Members
Posts: 1,282
Joined: 19-March 13
From: Charleston SC
Member No.: 15,673
Region Association: South East States
QUOTE(Kansas 914 @ Sep 22 2015, 07:24 PM) *

i am thinking about a bilge blower to replace the fresh air blower up front since my car has Kerry Hunter headers and no heat. It would be nice to have real forced air through the vents.

http://www.amazon.com/Rule-140-Marine-Blow...h/dp/B000O8AZ8K


I installed one like this bilge blower in my boat to purge the motor cavity. The stock 914 vent blower puts out more air.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
914_teener
post Sep 22 2015, 07:49 PM
Post #12


914 Guru
*****

Group: Members
Posts: 5,205
Joined: 31-August 08
From: So. Cal
Member No.: 9,489
Region Association: Southern California
QUOTE(barefoot @ Sep 22 2015, 06:43 PM) *

QUOTE(Kansas 914 @ Sep 22 2015, 07:24 PM) *

i am thinking about a bilge blower to replace the fresh air blower up front since my car has Kerry Hunter headers and no heat. It would be nice to have real forced air through the vents.

http://www.amazon.com/Rule-140-Marine-Blow...h/dp/B000O8AZ8K


I installed one like this bilge blower in my boat to purge the motor cavity. The stock 914 vent blower puts out more air.



There is velocity and volume......

Good point.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Krieger
post Sep 22 2015, 08:26 PM
Post #13


Advanced Member
****

Group: Members
Posts: 4,728
Joined: 24-May 04
From: Santa Rosa CA
Member No.: 2,104
Region Association: None
There was this a few years back from a post by Trekkor.


Attached image(s)
Attached Image
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Larmo63
post Sep 22 2015, 09:24 PM
Post #14


Advanced Member
****

Group: Members
Posts: 4,264
Joined: 3-March 14
From: San Clemente, Ca
Member No.: 17,068
Region Association: Southern California
Forrest's car is early, no dash vents.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
screenguy914
post Sep 23 2015, 11:59 AM
Post #15


Member
**

Group: Members
Posts: 249
Joined: 6-July 09
From: So. Cal
Member No.: 10,540
Region Association: Southern California
Bilge blowers are efficient and relatively inexpensive. Racers sometimes use them to duct forced air to help cool brake components and fluid coolers.

However, depending on their placement, they may be excessively noisy when used to source cabin air. I use a 4" Spal fan to help evacuate trunk air from a front oil cooler. However, its sound isn't noticeable during normal operation unless the engine is OFF.

Sherwood

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

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

- Lo-Fi Version Time is now: 10th June 2024 - 02:44 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 ...