Weber Backfiring - Club Cobra

Main Menu

Portal
Forums

Nevada Classics

Advertise at CC

November 2025

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

CC Advertisers

· Kirkham Motorsports
Superformance
· Finish Line
· Hurricane Motorsports
· Serpent Express
·
· Planet Cobra

· Shell Valley Classic Wheels
· Eight Stack Injection

4Likes

LinkBack

Thread Tools

Display Modes

#11 (permalink)

04-20-2014, 10:34 AM

jhirasak

CC Member

Join Date: Feb 2012

Location: Redondo Beach, CA

Cobra Make, Engine: 331 SB, AFR heads

Posts: 75

Not Ranked

Mutt,

I had a similar problem in the rpm range of 2500 to 3000 which turned out to be a slightly overrich transionsition between the idle circuit and the main circuit. I discovered that it was overrich in this range after I installed an A/F sensor in my exhaust. To correct the problem, I changed from the original F7 emulsion tube that was provided with the setup to a F11 emulsion tube which has air holes high up and slightly leans out the transition. I would recommend installing an A/F sensor to help you with further tuning of your system.

John

« Previous Thread | Next Thread »

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 Forum Rules

All times are GMT -7. The time now is 06:18 PM.

Contact Us - Club Cobra Home - Archive - Top

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