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Originally Posted by dlampe
Why would the air corrector need to be so small on a comp setup? Do you think that will help the popping? Could I solder the 210's and re-drill or is that a no no?
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Deane,
The easiest way to decide which category you slot into is look at it this way--Competition you are either accelerating or braking as in racing in all gears,
Road ,obviously you spend a lot of time at part throttle cruise mode and therefore less actual airflow thru the motor.
The smaller air corrector in the Comp setup is to increase the signal to pull fuel thru the main jet right thru the rev range since we are in a state of acceleration most of the time and require the enrichement. We dont require as much air thru the air corrector to emulsify the fuel/air mix at this point since the relatively high airspeed thru the secondary venturi will take care of most of that.
While you could solder the old air correctors its not really a permanent fix due to the erosion factor of the soft solder. A simpler way to check if this is reqd on your setup would be to make up eight small hairpins out of say 0.030" or0.040" stainless locwire and place one in each air corrector as a temporary measure- just make the 'legs' of the hairpin long enough so they cant jump out. Now if this cures your 'popping' at higher rpm/deceleration then you obviously have to richen up the main circuit by larger jet or smaller air. If it reappears lower in the rev range then the idle jet may need to be larger as well.
The 'popping' you are hearing is in the intake area isnt it ? as some other posters have mentioned the collector leak problem which usually occurs from an over rich unburnt fuel condition under deceleration and is a backfire in the muffler or tailpipe.
Jac Mac