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 13Likes
10-10-2016, 01:24 PM
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CC Member
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Join Date: Sep 2006
Location: No city...only 118 residents in Manter,
KS
Cobra Make, Engine: Cobra Auto Works body, Ron Godell Racecars chassis, 1989 Mustang GT 5.0 HO (converted to carb), W/C T-5, 3.73's in a Ford 9" Traction-Loc.
Posts: 812
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Not Ranked
Quote:
Originally Posted by peterpjb
anybody using a 48 ida weber battery for daily driving or only on track?
my webers are running suboptimal, but all the mechanics here in germany recommend to convert to a 650 or 715 holley carburator,
maybe the european fuel does not preserve that much energy?
my engine is a 331...
i really would like to drive my webers  |
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There's a lot of good advice here on our CC forum, but you might take a look on the GT40's forum, too...lots of those guys run Webers. There is a board for Induction and IIRC there was one member that put a lot of info regarding tuning the Webers on a disc, which he sells fairly reasonably...check the "stickies" on the induction forum or search for "tuning webers".
Good luck! We'd all love to be able to run Webers...there's just "that look" about them...and, of course, great performance when the system is all tuned correctly. I do know they are fairly sensitive to cam design and don't necessarily tolerate a cam with a lot of overlap. Perhaps that is the source of your fuel odor?
Cheers!
Dugly 
__________________
YD,E./PNB
No names were changed to protect the innocent! 
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10-10-2016, 01:39 PM
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Senior Club Cobra Member
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Join Date: Mar 2005
Location: Manchester,
NH
Cobra Make, Engine: AK1085 (302 Street), HTM111 (427 Comp), CSX2375R (289 Comp) and COB5999 (427 S/C)
Posts: 19,111
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Not Ranked
If you run the filters it will flood the car under acceleration. Air too restricted...
You can use larger screen mesh, I just go naked.... Full on Weber...
Was that your issue, stalling under acceleration?
Also, cannot see but you need to keep fuel psi at 3psi. Webers do not need the fuel that a carb uses.
Last edited by 1985 CCX; 10-10-2016 at 01:41 PM..
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10-10-2016, 02:17 PM
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CC Member
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Join Date: Jan 2016
Posts: 498
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Not Ranked
Quote:
Originally Posted by 1985 CCX
If you run the filters it will flood the car under acceleration. Air too restricted...
You can use larger screen mesh, I just go naked.... Full on Weber...
Was that your issue, stalling under acceleration?
Also, cannot see but you need to keep fuel psi at 3psi. Webers do not need the fuel that a carb uses.
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under acceleration they run absolutely perfect, but no cruising possible |
10-10-2016, 04:07 PM
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CC Member
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Join Date: May 2008
Location: Brisbane,
QLD
Cobra Make, Engine:
Posts: 2,797
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Not Ranked
Hi Peter,
Sounds like they just need a little "going over".
Inspection first, fuel pressure within 2.5-3.5, airflow balanced at idle etc.
Ensure all jets are snug.
If the airflow balance is out, it may explain some rough running.
Sounds like we need to know all the details of the carbs for jetting.
Should not be that fumey.
Open stack carbs can be smelly since the fuel fumes aren't contained by an aircleaner.
Gary
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10-10-2016, 04:47 PM
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CC Member
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Join Date: Sep 2009
Location: Dallas,
tx
Cobra Make, Engine: FFR track car, SL-C track car
Posts: 1,262
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Not Ranked
Peter,
Webers are pretty simple, but it does take some time to learn how to set them up and tune them. It's a worthy effort.
I recommend starting with Jim Inglese. He probably knows as much as anyone about Webers in Cobras.
Read this: Weber Tech
If you don't have a synchromer, you really need one. that is the first step. |
10-10-2016, 09:09 PM
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CC Member
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Join Date: Nov 2014
Location: Winter Garden,
Fl
Cobra Make, Engine: Everett Morrison/Side Oiler
Posts: 88
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Not Ranked
I have ran webers in the past on the street with no problems. Every one loves the looks. The most important item is camshaft selection. Everything else is out the window unless you have a proper camshaft for the engine and the webers. Research the forums on this subject. Just trying to assist.
Last edited by talos; 09-26-2024 at 11:06 PM..
Reason: adding info
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10-10-2016, 10:22 PM
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CC Member
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Join Date: Aug 2010
Location: San Antonio Valley Ca,
ca
Cobra Make, Engine:
Posts: 1,275
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Not Ranked
Quote:
Originally Posted by YerDugliness
.
There's a lot of good advice here on our CC forum, but you might take a look on the GT40's forum, too...lots of those guys run Webers. There is a board for Induction and IIRC there was one member that put a lot of info regarding tuning the Webers on a disc, which he sells fairly reasonably...check the "stickies" on the induction forum or search for "tuning webers".
Good luck! We'd all love to be able to run Webers...there's just "that look" about them...and, of course, great performance when the system is all tuned correctly. I do know they are fairly sensitive to cam design and don't necessarily tolerate a cam with a lot of overlap. Perhaps that is the source of your fuel odor?
Cheers!
Dugly |
Pardon my ignorance but I've been all over the forums looking for the sticky on the tuning webers CD. Could you post a direct link? |
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