Dual carb linkage setup |
|
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. |
|
Dual carb linkage setup |
sean_v8_914 |
Jun 5 2008, 01:20 PM
Post
#1
|
Chingon 601 Group: Members Posts: 4,011 Joined: 1-February 05 From: San Diego Member No.: 3,541 |
I hope this helps ya'll.
Attached thumbnail(s) |
sean_v8_914 |
Jun 5 2008, 01:21 PM
Post
#2
|
Chingon 601 Group: Members Posts: 4,011 Joined: 1-February 05 From: San Diego Member No.: 3,541 |
the angles are like gear ratios
Attached thumbnail(s) |
sean_v8_914 |
Jun 5 2008, 01:37 PM
Post
#3
|
Chingon 601 Group: Members Posts: 4,011 Joined: 1-February 05 From: San Diego Member No.: 3,541 |
fth
Attached thumbnail(s) |
sean_v8_914 |
Jun 5 2008, 01:38 PM
Post
#4
|
Chingon 601 Group: Members Posts: 4,011 Joined: 1-February 05 From: San Diego Member No.: 3,541 |
sfdh
Attached thumbnail(s) |
sean_v8_914 |
Jun 5 2008, 01:43 PM
Post
#5
|
Chingon 601 Group: Members Posts: 4,011 Joined: 1-February 05 From: San Diego Member No.: 3,541 |
gfshs
Attached image(s) |
sean_v8_914 |
Jun 5 2008, 01:46 PM
Post
#6
|
Chingon 601 Group: Members Posts: 4,011 Joined: 1-February 05 From: San Diego Member No.: 3,541 |
the drop arm to the butterflies is wrong here. it gives slow initial response relative to pedal travel making 70% to 100% feel stiffer.
Attached image(s) |
sean_v8_914 |
Jun 5 2008, 01:49 PM
Post
#7
|
Chingon 601 Group: Members Posts: 4,011 Joined: 1-February 05 From: San Diego Member No.: 3,541 |
cable is straight relative to the pull travel.
|
purple |
Jun 5 2008, 01:56 PM
Post
#8
|
Pigeon feeders attract me Group: Members Posts: 938 Joined: 24-July 07 From: Houston, TX Member No.: 7,942 Region Association: None |
correct me if i'm wrong, but isnt it best to have the drop arms as close to vertical as possible, merely for the fact that it's easier to 'see' if you're off or not?
|
sean_v8_914 |
Jun 5 2008, 02:13 PM
Post
#9
|
Chingon 601 Group: Members Posts: 4,011 Joined: 1-February 05 From: San Diego Member No.: 3,541 |
if your talking about the arms from the hex to the carb butterfly cam...yes, as close to vert as possible, however, teh carbs are off-set left to right front to rear so it is a compromise to get close. one carb butterfly pivot has a long space to help this.
angle X in dwg # 1 should be as vertical as you can get it but MUST be the same left to right |
rhodyguy |
Jun 5 2008, 03:50 PM
Post
#10
|
Chimp Sanctuary NW. Check it out. Group: Members Posts: 22,188 Joined: 2-March 03 From: Orion's Bell. The BELL! Member No.: 378 Region Association: Galt's Gulch |
i don't know how you guys can stand to deal with your carbs with the linkage on the rear side.
common angularity is the goal. throughout the range of motion. |
Kargeek |
Jun 6 2008, 01:53 AM
Post
#11
|
Senior Member Group: Members Posts: 555 Joined: 14-March 03 From: Orange, CA Member No.: 430 |
[i don't know how you guys can stand to deal with your carbs with the linkage on the rear side.
common angularity is the goal. throughout the range of motion.] It's the same front or back- it's how you align the linkage and set up the cable bracket. DH Attached thumbnail(s) |
rhodyguy |
Jun 6 2008, 09:45 AM
Post
#12
|
Chimp Sanctuary NW. Check it out. Group: Members Posts: 22,188 Joined: 2-March 03 From: Orion's Bell. The BELL! Member No.: 378 Region Association: Galt's Gulch |
i know the adj procedure is the same whether rear or front mounted linkage. it's the physical aspect of dealing with the droplinks and reaching around with the rear trunk hood in the way in what i consider a rather confined space.
|
sean_v8_914 |
Jun 6 2008, 11:51 AM
Post
#13
|
Chingon 601 Group: Members Posts: 4,011 Joined: 1-February 05 From: San Diego Member No.: 3,541 |
good point. show us a pic of your setup.
Kargeek, I like your throttle cable bracket. it is simple and clean. can you post a close up of teh cable routing. this bracket seems to be where most guys cheese out |
SirAndy |
Jun 6 2008, 11:57 AM
Post
#14
|
Resident German Group: Admin Posts: 41,815 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
Attached image(s) |
rhodyguy |
Jun 6 2008, 12:38 PM
Post
#15
|
Chimp Sanctuary NW. Check it out. Group: Members Posts: 22,188 Joined: 2-March 03 From: Orion's Bell. The BELL! Member No.: 378 Region Association: Galt's Gulch |
got this via the search feature. triad+linkage produces 4 pages of results. some of it's pretty funny. when my camera comes home i'll take a better photo.
Attached image(s) |
sean_v8_914 |
Jun 6 2008, 11:36 PM
Post
#16
|
Chingon 601 Group: Members Posts: 4,011 Joined: 1-February 05 From: San Diego Member No.: 3,541 |
that flexy cable holder is the culprit
I prefer lighter dual return springs |
rhodyguy |
Jun 6 2008, 11:46 PM
Post
#17
|
Chimp Sanctuary NW. Check it out. Group: Members Posts: 22,188 Joined: 2-March 03 From: Orion's Bell. The BELL! Member No.: 378 Region Association: Galt's Gulch |
are you refering to mine?
|
sean_v8_914 |
Jun 8 2008, 02:24 AM
Post
#18
|
Chingon 601 Group: Members Posts: 4,011 Joined: 1-February 05 From: San Diego Member No.: 3,541 |
one spring on each carb.
ya. not in love with your setup. the arms stood up like that give a non linear opening progression making top end throttle modulation more difficult. it is not something one could appreciate while street driving. in a performance environment it makes a difference. |
EyeTrip |
Jun 8 2008, 02:47 AM
Post
#19
|
Member Group: Members Posts: 104 Joined: 29-May 07 From: Camas, Wa Member No.: 7,767 Region Association: None |
One spring on each carb.
Mine pulls from the top side, seems to be easyer to adjust. Done it both ways. |
Lo-Fi Version | Time is now: 27th September 2024 - 12:59 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 ... |