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Old 05-22-2016, 06:14 PM   #2
Mitch//pa
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Join Date: May 2010
Location: Bucks County, PA
Posts: 11,454
Default Re: Zenith 2 gas adjsut needle seat

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A replaceable Brass Seat was used through 1929. An integral Seat, machined in the Lower Casting, was used after that. The Seat opening is honed to match the shape of the GAV Needle. Notice that the Brass GAV Seat looks much like the Compensating Jet. However, they are different! They are NOT interchangeable. The Brass Seat is also longer than a Compensator Jet. It is recommended to use a gasket under the brass seat.
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