Kinsler_Handbook_#32 December 2017

Kinsler Fuel Injection, Inc, 1834 THUNDERBIRD TROY, MICHIGAN 48084 U.S.A. www.Kinsler.com Phone (248) 362-1145 Fax (248) 362-1032 76 KINSLER K-TYPE JETS TYPICAL INCREMENTS VERSUS APPLICATION The following are guidelines: .002” gasoline and small alcohol engines .004” for typical alcohol V8 .004” to .008” for blown applications .006” to .010” for high speed and secondary restrictor jets. FEATURES OF THE K-TYPE JETS EACH K-type jet is precisely machined and stamped with the “KINSLER” name to identify it. It has a reamed orifice controlled within .0002”, a precise radius leading to the orifice, and a regulated finish. Every K-type jet is tailored on the flow bench to within 1% of the flow rate of the master reference jet of its same size. Therefore, even though the increments between the K-type jets are very small (.002” available), the change in flow rate between each jet is controlled. Every jet of the same size flows the same, if one jet is lost, an exact duplicate can be shipped immediately. THAT IS WHY YOU NEED K-JETS A perfect fuel injection system is of little use to the owner unless he has a good set of jets to use with it. When using commercially made jets, it is not unusual when going .005” smaller in jet size (in an attempt to richen the unit), to actually find no fuel rate change, or perhaps go grossly rich, or even to go a bit leaner! This can make it impossible to “tune in” the engine for best power and consistency. PRECISE ; ACCURATE ; CONSISTENT IMPORTANT NOTES A) When installing a K-type jet that is replacing a commerical jet, start with a K-type jet that is about .008” smaller. This is due to the efficient design of the K-type jets. B) Always install the jet so that the number is facing up as the jet is dropped in, then the fuel will flow into the radiused side of the jet. After the jet can has been assembled, the number will be facing toward the poppet. C) Make sure the jet can end has an o-ring receiving groove and that an o-ring is in place for the jet to rest on. Note: the jet sealing o-ring should be replaced periodically to make sure that the compound has not “dried” out. D) Any marks on the radius of a K-type jet were put there on purpose during the flow tailoring process.... leave them alone! E) Never string the jets on a wire, as their entrance shapes will change as they move around on the wire!!! For storage use the Kinsler plastic jet holder case #3720. ORDERING K-JETS Kinsler K-type jet pricing is broken down into material and labor. For proper pricing, the labor charge and the jet blank price must be added together. Drop in style jets give several advantages: No damage to the jet on installation or removal like some screw-in commercial jets, screwdriver nicks on the face of the inlet to any orifice can cause the flows to change. The jet rests on an o-ring for a positive seal. No possible leakage which could alter the flow, affecting the tuning of the engine. K-Jet installed in jet can IMPORTANT - the labor charge to make a set of K-type jets is included in the basic labor charge of flow testing and calibration of any fuel injection system, new or used. 3710 Labor to make SPECIAL K-type jets: .014" to .028" at .002" 3711 Labor to make SPECIAL K-type jets: .030" to .038" at .002" 3712 Labor to make SPECIAL K-type jets: .040" to .048" at .002" 3713 Labor to make ONE standard K-type jet; .050" to .186" at .002" 3714 Labor to make quantity set of 8 to 12 K-type jets, state sizes: .050" to .186" at .002" (you may request multiple quantites of the same jet size) 3715 K-type jet blank to make above matched jets © 2017

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