Club Cobra Gas - N Exhaust  

Go Back   Club Cobra > Engine Building, Tuning, and Induction > Weber Tuning

MMG Superformance
Nevada Classics
Main Menu
Module Jump:
Nevada Classics
Nevada Classics
MMG Superformance
MMG Superformance
Advertise at CC
Banner Ad Rates
Keith Craft Racing
MMG Superformance
MMG Superformance
March 2024
S M T W T F S
          1 2
3 4 5 6 7 8 9
10 11 12 13 14 15 16
17 18 19 20 21 22 23
24 25 26 27 28 29 30
31            
  #1 (permalink)  
Old 09-22-2018, 07:41 AM
CC Member
Visit my Photo Gallery

 
Join Date: Sep 2018
Location: DALLAS, TX
Cobra Make, Engine: Kirkham 427 fe weber 48 ida
Posts: 9
Not Ranked     
Default How to mechanically synch 48 ida

Iam brand new to webers.

Just bought a kirkham 427 side oiler.

Talked with Jim Inglese, installed everything internal that he recommended.

Now I need to get them synced.

Current reads are 5, 7, 10, 25 pass side front

Iam assuming that I need to mechanically synch them before I start syncing them while idling since they are so far off.

iam not sure where to start.
Reply With Quote
  #2 (permalink)  
Old 09-22-2018, 08:20 AM
FWB's Avatar
FWB FWB is offline
CC Member
Visit my Photo Gallery

 
Join Date: Jan 2008
Location: Williamsport, PA
Cobra Make, Engine: Kellison Stallion 468 FE
Posts: 2,703
Not Ranked     
Default

adjusting the throttle stops so that you get congruent readings on all carbs at idle.
that's where i start with mechanical FI, i'm sure its the same for the carbs too.
once your sure they all have the butterflies at the same point of closure, then you can start the never ending tuning which will change at the hint of your next door neighbors flatuation, and what house the moon is in.....
__________________
Fred B
Reply With Quote
  #3 (permalink)  
Old 09-22-2018, 08:27 AM
CC Member
Visit my Photo Gallery

 
Join Date: Sep 2018
Location: DALLAS, TX
Cobra Make, Engine: Kirkham 427 fe weber 48 ida
Posts: 9
Not Ranked     
Default

Still confused.

How should the butterflies be adjusted when the motor isn't running is I guess what iam asking.

I thought I read somewhere they are suppose to be slightly open?

If so how to you measure them, just by looking down the stack at them?
Reply With Quote
  #4 (permalink)  
Old 09-22-2018, 03:03 PM
bobcowan's Avatar
CC Member
Visit my Photo Gallery

 
Join Date: Feb 2007
Location: Colorado Springs, CO
Cobra Make, Engine: Backdraft, supercharged Coyote
Posts: 2,430
Not Ranked     
Default

One car/TB is controlled by the idle set screw on it's stop. The other three are matched to the first via the linkage. How you make adjustments and in what order all depends on how your linkage is set up.

Years ago I worked on my linkage for a long time trying to get it to synch. Finally, I gave up. I pulled it all off and threw it away. Then I built my own linkage using a central pulley, and it synched up easily.

I started out with this. One rod crossed over from one side to the other. Never could get this to work right.


Then I changed it to this, with a central bell crank. Worked almost immediately, and stayed in tune.
__________________
.boB "Iron Man"
NASA Rocky Mountain TTU #42
www.RacingtheExocet.com
BDR #1642 - Supercharged Coyote, 6 speed Auto
Reply With Quote
  #5 (permalink)  
Old 09-23-2018, 05:17 AM
cobra's Avatar
CC Member
Visit my Photo Gallery

 
Join Date: Nov 1999
Location: Niederbipp ( BE ) / Switzerland, BE
Cobra Make, Engine: ERA 427 SC # 571, 472 Shelby aluminum "stroker " CSX # 299 from Gessford, 48 IDA Weber carburetors from Jim Inglese
Posts: 397
Not Ranked     
Default

Look this video:

https://www.youtube.com/watch?v=sTb8Yh_-eNc
__________________
Greetings from Switzerland

Walter


http://www.kreuchi-auto.ch
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -7. The time now is 05:39 AM.


Powered by vBulletin® Version 3.8.0
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0
The representations expressed are the representations and opinions of the clubcobra.com forum members and do not necessarily reflect the opinions and viewpoints of the site owners, moderators, Shelby American, any other replica manufacturer, Ford Motor Company. This website has been planned and developed by clubcobra.com and its forum members and should not be construed as being endorsed by Ford Motor Company, or Shelby American or any other manufacturer unless expressly noted by that entity. "Cobra" and the Cobra logo are registered trademarks for Ford Motor Co., Inc. clubcobra.com forum members agree not to post any copyrighted material unless the copyrighted material is owned by you. Although we do not and cannot review the messages posted and are not responsible for the content of any of these messages, we reserve the right to delete any message for any reason whatsoever. You remain solely responsible for the content of your messages, and you agree to indemnify and hold us harmless with respect to any claim based upon transmission of your message(s). Thank you for visiting clubcobra.com. For full policy documentation refer to the following link: CC Policy
Links monetized by VigLink