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CC Advertisers
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08-25-2003, 06:33 AM
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CC Member
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Join Date: Dec 2000
Location: Broken Arrow. OK ( South Tulsa), USA,
OK
Cobra Make, Engine: 66 COBRA FE 427 /4SP. (HCS Coupe w/ 408 Stroker and TKO 600 -sold)
Posts: 5,595
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Not Ranked
Carb flaters under hard braking and sharp turns..
Need some help with my carbs.
When I am on the race track under hard breaking my engine tries to die. I can keep my engine running by keeping my rpms up but I would really like to just let up on the gas until I am ready to get back into the throtle.
Here are my particulars:
428 CJ 2X4 Edelbrock 600 cfms (front jets are .078 and rears are .068)on a Edelbrock Medium Riser; Holley Red electric fuel pump: Fram fire wall mounted fuel filter;Cam= Crane 572 lift with 235 duration solid lifters; Crane matched double springs; Crane solid lifters; Sig Erson roller rockers w/ Smith push rods; MSD Distributor; MSD 6AL Ign Box; MSD Black vibration proof Coil; bored .030 over; 10.6 : 1 compression; Speed Pro forged flat top pistons; forged eagle rods; Federal Mogul bearings.
Open for any suggestions asap. Leaving for Road America next week.
Thanks,
Clois
__________________
Sunshine, Asphalt and no stop signs...Perfect
"Let's roll"
"Be part of Something Good
......Leave Something Good Behind!"
from CD "Long Road Out of Eden"
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08-25-2003, 06:45 AM
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Member of the north
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Join Date: May 2003
Cobra Make, Engine: A Cobra
Posts: 11,207
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Not Ranked
Got slosh vents? Got Holley screens over them with extentions?
When braking hard on some Holleys, the fuel sloshes up the vent and into the venturi area. I think they have screens and extentions that control the excess fuel from entering the carb and flooding the engine.
Engines that have Holleys with sloshing problems act like the choke is stuck shut when braking hard.
Just a thought.
Good morning.
__________________
I'm a writer, feed the artist and buy a book.
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08-25-2003, 06:57 AM
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CC Member
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Join Date: Mar 2000
Location: Fairfield, NJ, USA,
NJ
Cobra Make, Engine: A & C, 351W, Tremec 3550. Exiled Member: Club Cranky
Posts: 5,897
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Not Ranked
If you are road racing or autox you can get road race floats to overcome the problems you are having.
Baker Carburetion
... Road Race Kit, Specialty Carburetors. Road Race Kit Cut off floats and power valve caps keep fuel slosh in hard turns from effecting acceleration. ...
http://www.bakercarburetion.com/products.htm
Roscoe
__________________
Roscoe
"Crisis occurs when women and cattle get excited!"....James Thurber
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08-25-2003, 08:44 AM
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CC Member
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Join Date: Dec 2000
Location: Broken Arrow. OK ( South Tulsa), USA,
OK
Cobra Make, Engine: 66 COBRA FE 427 /4SP. (HCS Coupe w/ 408 Stroker and TKO 600 -sold)
Posts: 5,595
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Not Ranked
Thanks guys. I just sent an email to Baker to see if they have any thing for my application.
Clois
__________________
Sunshine, Asphalt and no stop signs...Perfect
"Let's roll"
"Be part of Something Good
......Leave Something Good Behind!"
from CD "Long Road Out of Eden"
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08-25-2003, 10:20 AM
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CC Member
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Join Date: Mar 2002
Location: so cal,
Cal
Cobra Make, Engine: I used to fix them for a living
Posts: 2,563
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Not Ranked
Get the white vent baffles for your fuel bowls. They look like little whistles
__________________
In a fit of 16 year old genius, I looked down through the carb while cranking it to see if fuel was flowing, and it was. Flowing straight up in a vapor cloud, around my head, on fire.
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08-26-2003, 02:24 PM
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Renegade Nuns on Wheels
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Join Date: Aug 2001
Location: columbus,
Oh
Cobra Make, Engine: Unique 427 roadster with 351C-4B
Posts: 5,129
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Not Ranked
Cheap
I have had the vent issue on side hung float bowls that even the vent 'whistles' didn't fix. Being to cheap at the time to replace bowls, floats etc I took a loop of fuel hose and connected the two vents together with a hole cut at the very top to act as the vent (cut the hole with the hose OFF the carbs and flush out the junk before putting the hose on!). Worked for me.
Rick
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08-26-2003, 04:11 PM
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CC Member
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Join Date: Jan 2002
Location: Northern California,
CA
Cobra Make, Engine: -Sold- Contemporary 427S/C # CCX-3152 1966 427 Med Rise Side Oiler, 8v 3.54:1 Salisbury IRS, Koni's.. (Now I'm riding Harleys)
Posts: 2,567
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Not Ranked
You may have too much carb to begin with. the added slosh is killing you. extend the factory vent tubes by 3-4" with a piece of rubber line. Or if you really want to look cool run one vent to the other as described above
__________________
michael
A man that is young in years, may be old in hours, if he have lost no time. But that happeneth rarely. Generally, youth is like the first cogitations, not so wise as the second. For there is a youth in thoughts, as well as in ages... Sir Francis Bacon (1561-1626)
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