Go Back   Club Cobra > Manufacturers, Engine Builders, tools, and parts. > Kirkham Motorsports

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
Keith Craft Racing
Advertise at CC
Banner Ad Rates
MMG Superformance
MMG Superformance
MMG Superformance
December 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        

Kirkham Motorsports

Reply
 
LinkBack Thread Tools Display Modes
  #21 (permalink)  
Old 05-22-2010, 07:36 PM
CC Member
Visit my Photo Gallery

 
Join Date: May 2009
Cobra Make, Engine:
Posts: 135
Not Ranked     
Default

other plugs....
Attached Images
    
Reply With Quote
  #22 (permalink)  
Old 05-22-2010, 11:56 PM
Rick Parker's Avatar
CC Member
Visit my Photo Gallery

 
Join Date: May 2001
Location: California, Ca
Cobra Make, Engine: NAF 289 Slabside Early Comp Car with 289 Webers and all the goodies. Cancelling the efforts of several Priuses
Posts: 6,592
Not Ranked     
Default The "Skinny"

I think what you will find is that the TP (Which in a perfect world should be sealed to the underside of the hood) prevents radiated heat from being absorbed by the carburetor BUT forces ALL the Intake air to be pulled through the hood scoop. Now you say that your scoop isn't sealed to the TP, then you are pulling all the HEATED air from the top of the engine compartment into the carb. You spend thousands for the trickest heads, had them ported (more$$$), spent $800 for the latest and greatest Holley and then choke it down by forcing it to swallow nothing but hot air via a very poor path. The air/fuel ratio becomes out of wack (hot air) at a give throttle position. This is why it happens when you close the hood. Same thing happens with Webers, you're pulling the air of of the upper heated layer within the engine compartment.
__________________
Rick

As you slide down the Banister of Life, may the splinters never be pointing the wrong way

Last edited by Rick Parker; 05-22-2010 at 11:59 PM..
Reply With Quote
  #23 (permalink)  
Old 05-23-2010, 08:08 AM
CC Member
Visit my Photo Gallery

 
Join Date: May 2009
Cobra Make, Engine:
Posts: 135
Not Ranked     
Default

Quote:
Originally Posted by Rick Parker View Post
I think what you will find is that the TP (Which in a perfect world should be sealed to the underside of the hood) prevents radiated heat from being absorbed by the carburetor BUT forces ALL the Intake air to be pulled through the hood scoop. Now you say that your scoop isn't sealed to the TP, then you are pulling all the HEATED air from the top of the engine compartment into the carb. You spend thousands for the trickest heads, had them ported (more$$$), spent $800 for the latest and greatest Holley and then choke it down by forcing it to swallow nothing but hot air via a very poor path. The air/fuel ratio becomes out of wack (hot air) at a give throttle position. This is why it happens when you close the hood. Same thing happens with Webers, you're pulling the air of of the upper heated layer within the engine compartment.
you make an interesting point. So are you suggesting to pull the TP and put in a big air cleaner or to seal the TP to the hood?

The interesting point for me was that it was running great with the same air filter setup, but no TP. . . . and then suddenly this happened, so I am working on the ignition. Once that's done, if there is no improvement, I'll pull the TP and see how it runs and go from there. . . .

Thank you for your input, it does make a lot of sense!
Reply With Quote
  #24 (permalink)  
Old 05-23-2010, 10:15 AM
patrickt's Avatar
Half-Ass Member
Visit my Photo Gallery

 
Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 22,005
Not Ranked     
Default

Quote:
Originally Posted by pusherfans View Post
... I'll pull the TP and see how it runs and go from there. . . .
I would just unbolt my hood and take it for a drive. That's a lot easier than taking your turkey pan off and then putting it back on again. If running without a hood doesn't change the performance one lick, then you need to look elsewhere....
Reply With Quote
  #25 (permalink)  
Old 05-23-2010, 10:15 AM
Rick Parker's Avatar
CC Member
Visit my Photo Gallery

 
Join Date: May 2001
Location: California, Ca
Cobra Make, Engine: NAF 289 Slabside Early Comp Car with 289 Webers and all the goodies. Cancelling the efforts of several Priuses
Posts: 6,592
Not Ranked     
Default

By putting the TP on you then force all the ingested air to be drawn from the upper reaches. Hot air being less dense causes the A/F ratio to change and it begins to be overly rich when the hood closes.

You could prop the rear edge of the hood open and test it for yourself.
__________________
Rick

As you slide down the Banister of Life, may the splinters never be pointing the wrong way

Last edited by Rick Parker; 05-23-2010 at 10:23 AM..
Reply With Quote
  #26 (permalink)  
Old 06-17-2010, 08:02 PM
CC Member
Visit my Photo Gallery

 
Join Date: May 2009
Cobra Make, Engine:
Posts: 135
Not Ranked     
Default

TP was not the problem. it's a carb tuning problem. I started a new post in the Holley tuning area as I found started to think it's what it was. TP on and off, runs the same. It's an idle air issue I was having a problem with....just wanted to give this thread some "closure".
Reply With Quote
  #27 (permalink)  
Old 07-12-2010, 07:55 AM
CC Member
Visit my Photo Gallery

 
Join Date: May 2009
Cobra Make, Engine:
Posts: 135
Not Ranked     
Default

I bought a two piece Turkey Pan from Master Touch and it did not fit my throttle linkage and the fit and finish and aluminum type and customer service are all very different then what you get from the Kirkhams. This clearly explains the price diffence.
Reply With Quote
  #28 (permalink)  
Old 07-12-2010, 08:50 PM
mickmate's Avatar
Senior Club Cobra Member
Visit my Photo Gallery

 
Join Date: Sep 2000
Location: Holderness, NH, US of A, NH
Cobra Make, Engine: CSX 4772 old iron FE
Posts: 5,499
Not Ranked     
Default

I got a Mastertouch and it fit sweet, it's a beautiful piece. They were swamped with orders for a while after getting on the CC advertisers. They have made good on a couple of lost and slow orders I heard of.
__________________
mickmate
http://www.actoncustom.com/
Reply With Quote
  #29 (permalink)  
Old 07-13-2010, 06:04 AM
dcdoug's Avatar
CC Member
Visit my Photo Gallery

 
Join Date: Apr 2009
Location: Bethesda, MD
Cobra Make, Engine: CSX 6022, navy blue, period correct 427 SO
Posts: 2,154
Not Ranked     
Default

I had mickmate make mine "convertible". Same as what Mastertouch does, but you send him your pan.
__________________
“There are only three sports: bullfighting, motor racing, and mountaineering; all the rest are merely games.”

www.partskeeper.com
(Less time searching, more time wrenching & driving)
Reply With Quote
  #30 (permalink)  
Old 07-17-2010, 08:26 PM
CC Member
Visit my Photo Gallery

 
Join Date: May 2009
Cobra Make, Engine:
Posts: 135
Not Ranked     
Default

Got the carb issue fixed. See the post under Holley Tuning. I replaced it with a Street HP 4150 and 100 cfm smaller. Worked perfectly out of the box! See the post under Holley Tuning.
Reply With Quote
Reply



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 06:56 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