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CC Advertisers
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02-21-2009, 08:11 AM
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CC Member
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Join Date: Feb 2007
Location: Graham, WA,
wa
Cobra Make, Engine: Everett-Morrison, 347 Stroker
Posts: 425
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Not Ranked
Weber said "Good Luck Stopping Popping!!!!
I installed a set of 44 IDF weber carbs on my 347 Stroker. Syncronized carbs but cant seem to stop popping from sidepipes. I spoke to Weber and the man said "GOOD LUCK trying to stop that. Is popping common when using webers. The engine has not been dynoed and perhaps popping could be minimized. Those of you who know webers, what do you think!
Race-it 
Last edited by race-it; 02-22-2009 at 09:29 PM..
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02-21-2009, 09:13 AM
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Administrator
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Join Date: Jan 1999
Location: Duvall,
Wa
Cobra Make, Engine: KMP286, Shelby 482, Webers, 593HP
Posts: 4,162
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Not Ranked
Popping when letting off gas is very common. Popping while accelerating isn't good.
I've tinkered enough to tell you that I don't know how the heck to make it stop popping on deceleration.  |
02-21-2009, 10:44 AM
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CC Member
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Join Date: Feb 2006
Location: Lakewood,
WA
Cobra Make, Engine: FFR, Carb 302
Posts: 359
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Not Ranked
I think they look nice.  |
02-21-2009, 11:10 AM
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Senior Club Cobra Member
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Join Date: Feb 2004
Cobra Make, Engine:
Posts: 1,226
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Not Ranked
Quote:
Originally Posted by Steve Bisson
I think they look nice. |
Like a beautiful woman, until they start acting up.
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02-21-2009, 12:15 PM
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CC Member
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Join Date: Dec 2004
Location: Kansas City,
KS
Cobra Make, Engine: jbl
Posts: 2,291
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Not Ranked
from my limited experience i understand the popping on decelleration to be fuel dumping into the exhaust then igniting when o2 from an exhaust leak is intermixed, how the stuff ignites i have no idea.
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02-21-2009, 12:43 PM
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CC Member
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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
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Not Ranked
When do you experience the popping? Part throttle? Cruise? Deceleration? Full throttle?
__________________
Rick
As you slide down the Banister of Life, may the splinters never be pointing the wrong way
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02-21-2009, 01:01 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
Quote:
Originally Posted by Rick Parker
When do you experience the popping? Part throttle? Cruise? Deceleration? Full throttle?
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As above, when does it happen, what rpm at what throttle?
What's the settings of the carbs:
Venturi, emulsion tube, main, air, idle, pump jet, pump bleed, float level?
You really need a wideband O2 data logger to note the A/F ratio at the time of popping.
__________________
Gary
Gold Certified Holden Technician
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02-21-2009, 02:12 PM
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CC Member
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Join Date: Feb 2007
Location: Graham, WA,
wa
Cobra Make, Engine: Everett-Morrison, 347 Stroker
Posts: 425
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Not Ranked
When do you experience the popping? Part throttle? Cruise? Deceleration? Full throttle?
__________________
It pops at part throttle and deceleration.
Full throttle it screams!!!!!!!!! To bad God made so many trees I could stay at full throttle: 
Jim
Last edited by race-it; 02-22-2009 at 02:00 AM..
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02-21-2009, 02:16 PM
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CC Member
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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
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Not Ranked
Please post the air corrector, and jet sizes (idle & Main) as well as venturi size & emulsion tube # you are currently using.
We need that info before we can point you in the right direction.
__________________
Rick
As you slide down the Banister of Life, may the splinters never be pointing the wrong way
Last edited by Rick Parker; 02-21-2009 at 04:15 PM..
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02-21-2009, 09:19 PM
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CC Member
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Join Date: Dec 2001
Location: Olalla Wa.,
wa
Cobra Make, Engine: Classic ND 427 big block 427 ford with tri power I know the 427 didnt come with tri power just wanted something different. 9 inc. ford rear end top loader four wheel dic brakes.
Posts: 402
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Not Ranked
Jim,
As steve said they due look so cool and the Cobra sounds good as you take off. Send me your correct e mial as what I have is wrong.
Andy   |
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