Kinsler_Handbook_#32 December 2017

213 1834 THUNDERBIRD TROY, MICHIGAN 48084 U.S.A. Phone (248) 362-1145 Fax (248) 362-1032 Kinsler Fuel Injection, Inc, LUCAS MECHANICAL FUEL PUMP Each Lucas mechanical pump supplied by Kinsler will have a red flow test tag wired to it. This assures that the pump has been put through a run-in schedule of varying pump speeds and pressures for at least 1.2 hours. The pump is flow tested at the start and end of the run-in, and if there is more than a very small difference in flow between the start and end flow tests the pump is rejected as unsatisfactory. DIRT It can’t be stressed too much that cleanliness is of supreme importance to any fuel system. It only takes one small grain of dirt to start a scoring between the pump gears and the housing. Making fuel lines: When you cut steel braided hose, small fragments from the braid get inside... it must be flushed very thoroughly to get all of these out... some always lodge at the end of the barb of the hose fitting. It is excellent to run a Kinsler 25 micron Monster stainless mesh pump inlet filter, part #8309-025 (see Page #164). It is ideal to place this in the fuel line immediately before the pump so it will catch any dirt left inside the line during fabrication. It measures just 2.5” in diameter by 4” long and comes with 8 AN male flare ends (can also be supplied with 6 AN male flare fittings). LACK OF PUMP PRIMING It is important that the pump is primed with fuel before the engine is cranked over at all, since the fuel is the only lubrication for the pump. It is smart to put a few drops of oil inside the pump each time you reinstall it on the engine, for initial startup lubrication. Turning on the high pressure electric starting pump doesn’t necessarily push any fuel into the mechanical fuel pump. This is because there is a check valve at the outlet of each pump, to prevent fuel from going back through one pump when the other one is pumping. Lucas wide gear mechanical pump segment mounted belt drive unit with AN adapter fittings Disassembled Lucas mechanical pump segment LUCAS PUMP DRIVE SEALS Kinsler design and manufactured replacment lip seals for Lucas mechanical and electric fuel pump drives. Special compound provides excellent seal and resistance to detoration by the fuel. Early Lucas electric fuel pump - filter combination used on production Maserati in the 60’s, and some racing Ferraris, such as the P4. Called “The Black Bomb” © 2017 8226 Lucas mechanical pump drive shaft seal 8228 Lucas electric pump drive shaft seal Later Lucas electric fuel pump without filter. Used on production Triumph fuel injected cars and as starter pump on Can-Am cars in the 60’s and 70’s PRESSURE The pressure relief (PR) valve is set to maintain system pressure at about 150 PSI on a Can-Am car with a 500 cubic inch engine, putting out about 700 HP.... this requires about .117” shuttle stroke. Since the nozzles crack at 56 PSI, this leaves 94 PSI (150 - 56) to move the two shuttles inside the metering unit. CAUSES OF PUMP FAILURE #8228 #8226