ORIFICE AREA CONVERSION CHART

DIA. IN. .020 .021 .022 .023 .024 .025 .026 .027 .028 .029 .030 .031 .032 .033 .034 .035 .036 .037 .038 .039 .040 .041 .042 .043 .044 .045 .046 .047 .048 .049 .050 .051 .052 .053 .054 .055 .056 .057 .058 .059 .060 .061 .062

AREA SQ. IN. .000314 .000346 .000380 .000415 .000452 .000491 .000531 .000573 .000616 .000661 .000707 .000755 .000804 .000855 .000908 .000962 .001018 .001075 .001134 .001195 .001257 .001320 .001385 .001452 .001521 .001590 .001662 .001735 .001810 .001886 .001964 .002043 .002124 .002206 .002290 .002376 .002463 .002552 .002642 .002734 .002827 .002922 .003019

DIA. IN. .063 .064 .065 .066 .067 .068 .069 .070 .071 .072 .073 .074 .075 .076 .077 .078 .079 .080 .081 .082 .083 .084 .085 .086 .087 .088 .089 .090 .091 .092 .093 .094 .095 .096 .097 .098 .099 .100 .101 .102 .103 .104 .105

AREA SQ. IN. .003117 .003217 .003318 .003421 .003526 .003632 .003739 .003848 .003959 .004072 .004185 .004301 .004418 .004536 .004657 .004778 .004902 .005027 .005153 .005281 .005411 .005542 .005675 .005809 .005945 .006082 .006221 .006362 .006504 .006648 .006793 .006940 .007088 .007238 .007390 .007543 .007698 .007854 .008012 .008171 .008332 .008495 .008659

DIA. IN. .106 .107 .108 .109 .110 .111 .112 .113 .114 .115 .116 .117 .118 .119 .120 .121 .122 .123 .124 .125 .126 .127 .128 .129 .130 .131 .132 .133 .134 .135 .136 .137 .138 .139 .140 .141 .142 .143 .144 .145 .146 .147 .148

AREA SQ. IN. .008825 .008992 .009161 .009331 .009503 .009677 .009852 .010029 .010207 .010387 .010568 .010751 .010936 .011122 .011310 .011499 .011690 .011882 .012076 .012272 .012469 .012668 .012868 .013070 .013273 .013478 .013685 .013893 .014103 .014314 .014527 .014741 .014957 .015175 .015394 .015615 .015837 .016061 .016277 .016513 .016742 .016972 .017203

DIA. IN. .149 .150 .151 .152 .153 .154 .155 .156 .157 .158 .159 .160 .161 .162 .163 .164 .165 .166 .167 .168 .169 .170 .171 .172 .173 .174 .175 .176 .177 .178 .179 .180 .181 .182 .183 .184 .185 .186 .187 .188 .189 .190 .191

AREA SQ. IN. .017437 .017672 .017908 .018146 .018385 .018627 .018869 .019113 .019359 .019607 .019856 .020106 .020358 .020612 .020867 .021124 .021383 .021642 .021904 .022167 .022432 .022698 .022966 .023235 .023506 .023779 .024053 .024329 .024606 .024885 .025165 .025447 .025730 .026015 .026302 .026590 .026880 .027172 .027465 .027759 .028055 .028352 .028652

CARBURETOR AND INJECTOR JETS

HILBORN INJECTOR JETS are available in sizes from blank to .200. There are 64 sizes in varied steps from .040 through .200.

HOLLY MAIN METERING JETS duplicate the original design, but give the greatest possible span of jetting. 65 sizes are available from .029 through .125.

CARTER MAIN METERING JETS are designed to duplicate the original, greatly expanding jetting possibilities. 57 sizes are available from .060 through .116.

ROCHESTER MAIN METERING JETS duplicate original jets and have size range that allows almost unlimited jetting. 35 sizes are available from .044 through .089.