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
MMG Superformance
Main Menu
Nevada Classics
Nevada Classics
MMG Superformance
MMG Superformance
Advertise at CC
Banner Ad Rates
MMG Superformance
August 2022
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      
  #21 (permalink)  
Old 09-09-2002, 05:04 AM
cobrajeff's Avatar
Senior Club Cobra Member
Visit my Photo Gallery

 
Join Date: Dec 1999
Location: Edgewater, FL
Cobra Make, Engine: ERA FIA, BOSS 351C/Webers
Posts: 1,303
Not Ranked     
Default

The road draft tube plugged into a valve cover breather hole at the top, and dropped down beside the engine. The lower end was cut-off at an angle, so that air running by it under the car would "pull" the vapors out through the open tube.
This is exactly the same set-up as you would find on many early 64-64 1/2 289 engines (before PCV valves).

Regards,

Jeff
__________________
CobraJeff
ERA P 202
Reply With Quote
Sponsored Links
Sponsored Links
  #22 (permalink)  
Old 09-12-2002, 05:03 PM
Bob In Ct's Avatar
Senior Club Cobra Member
Visit my Photo Gallery

 
Join Date: Mar 2001
Location: Southern Connecticut, CT
Cobra Make, Engine: SPF - 351W, 944 non-turbo
Posts: 2,105
Not Ranked     
Default

So what is the answer to my original question? Do I need to rejet or adjust the timing?

Just for the record a PCV valve is not a pressure reducer. it's a ventilator. Breathers will allow any excess gas to escape!

Bob
Reply With Quote
  #23 (permalink)  
Old 09-12-2002, 05:54 PM
CC Member
Visit my Photo Gallery

 
Join Date: Jun 2001
Location: Washington DC Metro (Virginia), VA
Cobra Make, Engine: Classic Roadsters, Tweaked 351W, T-5Z, CRII Tech Support Team.
Posts: 1,898
Not Ranked     
Default

Your timing should be unaffected by adding a PCV.

Your primary side jetting may need to be increased a size or two because you're adding additional air with the PCV. Idle mixture may need resetting. Secondaries should not need any changes as PCV adds little, if any air under low vacuum, such as when secondaries are open.

If you don't re-jet, and engine starts pinging, re-jet carb before retarding timing.

Last edited by Jack21; 09-12-2002 at 05:58 PM..
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 12:37 AM.


Powered by vBulletin® Version 3.8.0
Copyright ©2000 - 2022, 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