SUPPORT OUR SPONSOR

Go Back   Club Cobra > Club Cobra Tech Areas > Shop Talk

Welcome to Club Cobra!  The World's largest non biased Shelby Cobra related site!

  •  » Representation from nearly all Cobra/Daytona/GT40 manufacturers
  •  » Help from all over the world for your questions
  •  » Build logs for you and all members
  •  » Blogs
  •  » Image Gallery
  •  » Many thousands of members and nearly 1 million posts! 

YES! I want to register an account for free right now!  p.s.: For registered members this ad will NOT show

MMG Superformance
Nevada Classics
Keith Craft Racing
Main Menu
Nevada Classics
Nevada Classics
Keith Craft Racing
Advertise at CC
Banner Ad Rates
MMG Superformance
MMG Superformance
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 02-25-2012, 02:24 PM
jwinkler's Avatar
CC Member
Visit my Photo Gallery

 
Join Date: Mar 2000
Location: Austin, TX
Cobra Make, Engine: Classic Roadsters, 302->351
Posts: 198
Not Ranked     
Default holley fuel rail question

My old fuel rail (for a 650 double-pumper) had a slow leak, so I decided to replace it with AN fittings. Dry, everything seemed to connect well. I tightened things securely, but not "gorilla" tight, and once I got fuel in the lines, it started leaking at the two inlet points on the carb.

The gaskets between the inlet "pipe" (looks like a pipe, anyway) and the carb are new - is there some sort of seal I need to put on the threads, or did I just not tighten it enough?



Thanks,

JLW
Reply With Quote
  #2 (permalink)  
Old 02-25-2012, 02:38 PM
Curt C.'s Avatar
CC Member
Visit my Photo Gallery

 
Join Date: Nov 1999
Location: Las Vegas, NV
Cobra Make, Engine: Classic Roadster; 351W
Posts: 743
Not Ranked     
Default

It could be that the carb flange surface has an imperfection of some sort. A small amount of gasoline resistant thread sealant on the washer might eliminate it.
Reply With Quote
  #3 (permalink)  
Old 02-25-2012, 02:51 PM
bingo2's Avatar
CC Member
Visit my Photo Gallery

 
Join Date: Aug 2010
Cobra Make, Engine: RUCC, SB 331 Stroker
Posts: 171
Not Ranked     
Default

It appears that you're using the aluminum gaskets, even when new they may leak. Try to get some nylon ones, you may find them at an auto parts store that sells Holley carb parts, they won't leak and are almost infinitely reusable.
Reply With Quote
  #4 (permalink)  
Old 02-25-2012, 04:00 PM
CC Member
Visit my Photo Gallery

 
Join Date: Dec 2004
Location: Kansas City, KS
Cobra Make, Engine: jbl
Posts: 2,291
Not Ranked     
Default

there is a lip where the arrow is pointing so you have to make sure everything is fit correctly, from experience. the aluminum washers are dead soft so if everything is flat they should work, might have to work the fitting a little (tighten/loosen a few times).
Reply With Quote
  #5 (permalink)  
Old 02-26-2012, 09:41 AM
zrayr's Avatar
CC Member
Visit my Photo Gallery

 
Join Date: Aug 2007
Location: NE Oklahoma, OK
Cobra Make, Engine: Fords
Posts: 544
Not Ranked     
Default

try some Hylomar on the gasket surface and the threads also. It will work. don't use too much as it will plug up the jets if it reaches them. It's sold in the USA by Permatex under lic.

http://www.permatex.com/products/Aut...ge_Sealant.htm

Hylomar Universal Blue Sealant - PL32



Z.
__________________
'65 K code Mustang
'66 Galaxie 500
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 On
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -7. The time now is 11:20 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