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Re: throttle response - which carb has the best?
[Re: emarine01]
#1357583
12/24/12 06:15 PM
12/24/12 06:15 PM
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Joined: Nov 2008
Posts: 1,491
Lethbridge, AB, Canada
dangina
OP
pro stock
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OP
pro stock
Joined: Nov 2008
Posts: 1,491
Lethbridge, AB, Canada
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Quote:
Annular boosters w/any double pump 
I haven't heard of these, thanks for the tip! read some interesting articles on this, do you prefer these over the downlegs?
although I also read that they are not recommemded for the Perf, Perf/RPM, or RPM Airgap, I wonder why? to bad because I'm running the perf/rpm intake...
so many choices now - I hope I have some extra cash over christmas!
Last edited by dangina; 12/24/12 06:23 PM.
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Re: throttle response - which carb has the best?
[Re: dangina]
#1357584
12/24/12 06:22 PM
12/24/12 06:22 PM
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Joined: Sep 2012
Posts: 1,563
Janesville, WI
SpareParts
pro stock
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pro stock
Joined: Sep 2012
Posts: 1,563
Janesville, WI
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Quote:
Quote:
Annular boosters w/any double pump
I haven't heard of these, thanks for the tip! read some interesting articles on this, do you prefer these over the downlegs?
so many choices now - I hope I have some extra cash over christmas!
Annular carbs set the booster further down in the venturi to deliver the vacuum signal quicker, the boosters are typically larger than a down leg but more responsive. However due to their size they can become a restriction at high rpm.
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Re: throttle response - which carb has the best?
[Re: cudaman1969]
#1357586
12/25/12 09:34 PM
12/25/12 09:34 PM
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Joined: Aug 2003
Posts: 43,213
Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,213
Bend,OR USA
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Quote:
If your idle fuel mix is correct(air and fuel bleeds) any carb will be responsive. It has to be rich enough, at idle, so there is a good transition when the main circuit opens.A 10 or12 to 1 ratio is what I start with and if right no acc. pump is needed. Read one of the old Holly carb books. Every carb has to be reworked to each engine combo, vacume signal, to really dial it in so it's responsive.
I've found just the opposite to be better on my cars and carbs, 14.8 or leaner at idle and part throotle cruise and 12.8 to 13.5 at WOT, depending on fuel being used and altitude being driven at. A lot of the Holley carbs, especially the race ones like the D.P. and Dominators, are real rich at idle and part throttle like he stated, that can and will foul the colder hear range spark plugs and possibly wash the cylinder walls down and dry them out   OP, you might want to invest in a wide ban O2 kit, they can be a real help on tuning the carbs or EFI, especially when you get real close to perfect 
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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