Kinsler Handbook #32 May 2025

Kinsler Fuel Injection, Inc, 1834 THUNDERBIRD TROY, MICHIGAN 48084 U.S.A. www.Kinsler.com Phone (248) 362-1145 Fax (248) 362-1032 96 HIGH SPEED BYPASS VALVE KINSLER K-140 VALVES This valve has the highest flow capacity with the lowest pressure rise of any valve on the market. For most applications the rise is under 1-PSI, since the total bypass flow for most systems is 600 lbs/ hr or less. Extremely smooth operation. The closing flow curve is within 0.3 (3/10) PSI at any flow point on the opening curve. This is achieved by hardcoating, then micro-lapping all of the moving parts. This means the pressure in the fuel system will stay close to the set point on both rising and falling engine RPM. THE ULTIMATE HIGH SPEED K-140 © 2024 #3989 #3161 Exploded view of K-140 Close up of live-action pintle Many valves can go into a “buzz” (hydraulic vibration); this valve is more stable as it is the only valve on the market with a unique spring arrangement designed to control buzz. The diaphragm has a swiveling “live” center pintle that closes down on the seat for very smooth operation. Both the pintle and the seat are lapped for bubble tight close-off. Hard anodized aluminum housing components and a very compact design makes this piece lighter and easier to install in the vehicle. Components are compatible with gasoline and methanol . Seven different spring combinations are available for a total adjustable range of 17 - 230 PSI. There is also CUSTOM BUILDUP SERVICE available. Accepts Kinsler ... has jet sealing o-ring for restrictor jet. Valve is LIGHT , weighs 0.45 lbs. The K-140 High Speed comes complete with : 6 AN male flare inlet fitting #3161 Restrictor jet holder Vent breather filter New “N” Tower Design With Side Vent Location #3982 “S” Tower Design 3967 Complete assembly, 17-37 PSI 3968 3978 Complete assembly, 26-51 PSI 3969 3979 Complete assembly, 34-80 PSI 3970 3980 Complete assembly, 49-106 PSI 3971 3981 Complete assembly, 57-123 PSI 3972 3982 Complete assembly, 72-152 PSI 3973 3983 Complete assembly, 88-230 PSI, requires special spring package, call for details K140-T-N Tower with female 3AN ORB 3981-N 3AN M+O x 10/32 adapter fitting 3989 3989-N Vent filter breather, sintered stainless steel, 10-32 male Restrictor jet holder, has jet sealing o-ring, 6 AN female inlet x 6 AN male flare outlet, screws directly onto K-140 inlet recommended or outlet fitting and seals with o-ring Adjusting screw with lock nut, 10-32 thread Diaphragm assembly, includes: lower spring rest, pintle, and diaphragms (2) Diaphragm replacement material ONLY (two pieces) Spring, 'Inner' Spring, 'Middle' Spring, 'Outer' K-140 mounting bracket, billet aluminum, black anodized, four mounting holes at 1.90" centers Set of four Vibration Isolation Mounts, for #12085, 5/8" diameter x 1/2" tall, rubber, 8-32 x .490" thread E-Body S-Tower / N-Tower 3161 3988 12090 12091 12087 12088 12089 12085 12086