 Carb Bellcrank Equation |
|
|
|
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. |
|
|
| damnfiknow |
 Dec 28 2010, 09:12 PM
Post
#1
|
|
Member  Group: Members Posts: 77 Joined: 25-October 09 From: Texas Member No.: 10,980 Region Association: None  |
Someone, please, the equation for determining the diameter of a bellcrank to be used on a Weber 40 setup. Standard 914 accelerator cable length/throw (full close/full open) and standard Weber 40 butterfly. Also, anyone know of a source for such a bellcrank? Hope not to have to farbricate one myself. No lathe so will have to be with an electric drill for turning power. Extremely primitive.
|
   |
 
|
  |
Replies
| McMark |
Dec 29 2010, 01:10 PM
Post
#2
|
|
914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
I sure do!
Attached image(s) 
|
|
|
|
| jeffdon |
Dec 29 2010, 01:15 PM
Post
#3
|
|
Senior Member Group: Members Posts: 1,094 Joined: 24-October 06 From: oakland, ca Member No.: 7,087 Region Association: None |
QUOTE(McMark @ Dec 29 2010, 11:10 AM)  I sure do! So in this setup, it appears that both rods link to the carbs at the BACK of the carbs. My carbs are absolutly identical, which means the rod attachments are at the front of one carb, the back of the other. My bell crank is homebrew and designed to accommodate this. I have a hunch that it does not pull equally on both carbs. anyone care to comment on the viability of my set up? Don't hate on the general condition of the rest of the engine bay, I have cleaned it up since i took the pic.  |
|
|
|
| mrbubblehead |
Dec 29 2010, 02:23 PM
Post
#4
|
|
Twodollardoug Group: Members Posts: 1,155 Joined: 17-December 10 From: calimesa ca. Member No.: 12,492 Region Association: Southern California |
QUOTE(jeffdon @ Dec 29 2010, 11:15 AM) QUOTE(McMark @ Dec 29 2010, 11:10 AM) I sure do! So in this setup, it appears that both rods link to the carbs at the BACK of the carbs. My carbs are absolutly identical, which means the rod attachments are at the front of one carb, the back of the other. My bell crank is homebrew and designed to accommodate this. I have a hunch that it does not pull equally on both carbs. anyone care to comment on the viability of my set up? Don't hate on the general condition of the rest of the engine bay, I have cleaned it up since i took the pic. seams like i had a single 4o idf setup on a center mount type 1 offroad car. the carb i had had the throttle pull on the wrong side. FAT performance had the arm to allow me to put it on the other side of the carb so i could use it. but if your linkage is working well, it might not be worth the change. reread your post. its not working well. call FAT. if i remember right, the arm is different, so you cant move it front to back. but check to make sure. maybe it was the arm on MY carb that wouldnt work. |
|
|
|
Posts in this topic
damnfiknow Carb Bellcrank Equation Dec 28 2010, 09:12 PM
McMark The absolute best bellcrank I've seen is this ... Dec 28 2010, 09:17 PM
mrbubblehead
The absolute best bellcrank I've seen is this... Dec 28 2010, 11:15 PM ConeDodger
The absolute best bellcrank I've seen is this... Dec 29 2010, 02:34 PM
anderssj
The absolute best bellcrank I've seen is this... Dec 29 2010, 02:43 PM biosurfer1 I have the one Mark pointed out and I like it. It... Dec 28 2010, 10:01 PM SirAndy My carbs are absolutly identical, which means the ... Dec 29 2010, 02:24 PM mrbubblehead
[quote name='McMark' post='1411156' date='Dec 29 ... Dec 29 2010, 02:39 PM mrbubblehead
I sure do!
do you think this is a better se... Dec 29 2010, 01:32 PM kg6dxn
I sure do!
do you think this is a better s... Dec 29 2010, 02:16 PM porschetub
I sure do!
do you think this is a better s... Sep 13 2019, 01:22 AM Cevan Let me see if I can remember how I did mine. If I... Dec 29 2010, 03:03 PM McMark
I have a hunch that it does not pull equally on b... Dec 29 2010, 03:49 PM azbill Take a look at the Sidewinder bell crank designed ... Dec 29 2010, 05:57 PM 914werke @mcmark In the example pic you provided it appear... Sep 12 2019, 05:21 PM johnhora Source for the CSP Mark mentioned...
https://www2... Sep 12 2019, 09:53 PM porschetub
Source for the CSP Mark mentioned...
https://www... Sep 13 2019, 01:29 AM Tbrown4x4
[quote name='johnhora' post='2746671' date='Sep 1... Sep 13 2019, 03:02 AM Chi-town Type 4 with pancake fan I believe is the applicati... Sep 13 2019, 09:20 AM 914werke I bought Mark's bracket and took the cable up... Sep 13 2019, 09:52 AM euro911 Wow, old thread.
I used the CSP bell crank linkag... Sep 13 2019, 10:54 AM Tbrown4x4
I bought Mark's bracket and took the cable u... Sep 13 2019, 05:28 PM bbrock
@[url=http://www.914world.com/bbs2/index.php?sh... Sep 13 2019, 06:15 PM Tbrown4x4 Yes, 4 inches overall. That left a nice radius fol... Sep 13 2019, 07:53 PM porschetub Currently out of necessity building one from a chi... Sep 13 2019, 11:24 PM porschetub Speedworks (?) have one but its a front mount that... Sep 14 2019, 11:26 PM |
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 11th May 2025 - 05:30 AM |
Invision Power Board
v9.1.4 © 2025 IPS, Inc.