jetting on duplex carbs

[4fun]

needing a little info on jetting, duplex carbs have two jets in bottom of carb by the bowl nut, i am wondering if a guy can put to big or to small of jets in there for a big change in elevation, i think the load screw is set and adjusts the fuel regardless of jet sizes, thanks for any help

 

[buickanddeere]

(quoted from post at 10:35:38 01/16/10) needing a little info on jetting, duplex carbs have two jets in bottom of carb by the bowl nut, i am wondering if a guy can put to big or to small of jets in there for a big change in elevation, i think the load screw is set and adjusts the fuel regardless of jet sizes, thanks for any help

Robert's Carb has an online catalog that references the various power jets and nozzles. Which are mixed and matched among the carbs and tractors depending upon fuel type,engine size and engine rpm.

 

[Mike N Mo]

If you want to play with different sizes, buy some short (1/4" long) 8-32 screws and drill them with your numbered drill bits a little at a time. On our pulling tractor I sized them so it's fueled correctly with the load screw adjusted to the halfway point, so I have adjustment both ways to compensate for temp changes. If you use the jets you have and oversize them, solder them back closed, and re-drill them.