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 108 INDEXING A BARREL LINKAGE GEOMETRY TO BARREL VALVE INDEXING AND ROTATION Kinsler barrel valves are available in clockwise (Right Hand) and counterclockwise (Left hand) rotation. The spool is centered in the block, with the inlet fitting port offset to one side of the spool bore. This gives more direct flow through the notch cut in the side of the spool at wide open throttle. See “Barrel Valve Spool Ramp” and “How The Secondary Works”, top of pg #84. Clockwise (right hand) Counterclockwise (left hand) A properly fit spool will have approximately 0.0005” clearance to the barrel valve block bore. A spool with a looser fit will allow fuel to seep around the spool, requiring reindexing to compensate for the increased flow of fuel. If seepage is excessive, the spool will have to be reindexed too much causing the secondary port to be closed off prematurely during the opening of the throttles. Also, the fuel flow notch may be reindexed enough to close it off some at wide open throttle and inadequate fuel delivery near wide open throttle. When a spool has a secondary bypass port, at an idle the port in the spool should be exposed to the inlet port of the barrel valve block, fully or partially. Note: Crower barrel valves have the spool bore machined offset from the center of the block instead of inlet port being offset machined. The linkage geometry to the barrel valve affects the part throttle fuel rate. The geometry MUST be set correctly before the spool is indexed. The center-to-center (c-c) of arms ‘A’ and ‘B’ must be equal. The barrel valve hex link must have the same c-c distance (‘M’) as the barrel valve spool shaft to the throttle shaft (‘D’). As the two arms rotate, they will remain parallel to each other, and the barrel valve hex link will remain parallel to the baseline. Setting up the linkage geometry this way will cause the barrel valve spool to rotate exactly the same as the throttle shaft. See “HOW TO SET UP LINKAGE” on Pages #58-59. Fig. 1.1 © 2017 Rotation looking at top of spool Rotation looking at top of spool V V V Secondary Outlet Fitting Hole For Secondary Fuel Flow Ramp V V

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