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01-11-2005, 08:06 AM
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#4 |
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Moderator
Join Date: Aug 2000
Location: Milan, OH
Posts: 2,699
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Re: Help in reading jet size
The 1-2-3 refers to the tolerance of the jet. Each jet is measured and compared to its theoretical perfect sizing. Don't quote me on this, but I think 1 is towards the low limit and 3 towards the high limit on the machining tolerances. Therefore, if you're trying to assemble a set of real close tolerance jets, you'd try to put all '1' in your jet kit. I seem to remember reading about this either on the Holley site or in one of my carb tuning books.
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Jeff Chambers 1990 Mustang GT 10.032 Seconds / 137.5 MPH 14-time Street Warrior World Record Setter CRT Performance 2001 Tropic Green Mustang GT - 12.181 / 113.2 MPH 2002 Ford F-250 Crew Cab 7.3l Power Stroke - 17.41@77.2 "There's nothing boring about a small block automatic shifting gears at 9400 rpm!" |
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