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Have a ? on the tech article about the AV?

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Old Jul 14, 2003 | 02:06 PM
  #1  
bigals87z28's Avatar
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From: Ocean, NJ
Car: Check The Sig
Have a ? on the tech article about the AV?

Ok now it says to file the tab of for increasing the air flow... but the not says dont file it all off? whats going on? file it half way down? file it all the way?

Look at the AV linkage. Rotate the AV open and observe the little tab on the bottom of the linkage that hits the underside of the airhorn lip.
Cut, file or otherwise mutilate that tab off. (*see note*)
If you want to get really trick, you could drill a hole in the airhorn casting where the tab hit and put a setscrew to adjust the total opening of the AV. This could be used as a tuning tool, along with different metering rods to change airflow and fueling to suit current conditions.
(*note: When removing the tab, be careful how much you remove. If you file it down flat, you will definitely get interference with the AV linkage. When that happens, you have to get creative and tweak the rod and/or cut the slot in the linkage longer to allow it to work. If you want full airflow, this is your only option, and if you're remotely mechanically able it's not hard, but i still had to let you know in advance.)
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Old Jul 14, 2003 | 05:30 PM
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Damon's Avatar
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From: Philly, PA
You want the seocndary air valve to open up about 85* when all the trimming and filing is done.
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