In the days of `57 ford 312’s and `60 dodge 383’s the purpose was for a summer and winter setting of the accelerator pump. I’m thinking the nozzle should be around 27 on the front, unsure what it should be on the back. Throttle position 41r643 yellow 41r336 brown 41r427 blue 41r466 orange 41r290 green 41r240 red 41r218 white 41r330 pink 41r234 black. Get a #31 discharge nozzle installed. Web accelerator pump shot relative to cam color from lightest to heaviest are as follows:
In the days of `57 ford 312’s and `60 dodge 383’s the purpose was for a summer and winter setting of the accelerator pump. The pink cam is the least aggressive cam in the pack. Categories / gauges and gauge accessories Also, if you order a pump cam kit, you will notice that the cams are double profiled. The yellow and brown cams are for 50cc pumps.
The chart is for the 30cc pump cams. Holley includes a graph in the catalog we’ve reproduced for this article that shows how each of the cams alter the lift curve. Web the accelerator pump system consists of three main components: The yellow and brown cams are for 50cc pumps. Also, if you order a pump cam kit, you will notice that the cams are double profiled.
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The longer the graph the longer the shot duration per pump shot and the shorter the graph the shorter the shot but is a quicker and bigger but less duration of throttle opening. The pink cam is the least aggressive cam in the pack. Web pump cam lift vs. Utilizing this chart will help you determine the correct accelerator pump cam for your specific application based on how aggressive the accelerator cam profile is. Also, if you order a pump cam kit, you will notice that the cams are double profiled. This will help you pick the next size up or next size down when changing them out. Web primary pump cam is pink with a number 23 nozzle. As for the pump cams, does what’s in there sound right? The yellow and brown cams are for 50cc pumps. None of this information will mean diddly squat if your pump arm follower. Web here is the chart i like to use and it has done the best for me. They will not work with 30cc pumps. Web in the book there is a chart that shows exactly how much each cam pumps by color. In the days of `57 ford 312’s and `60 dodge 383’s the purpose was for a summer and winter setting of the accelerator pump. Web these two charts show the lift profile of the various holley fuel pump cams when located using hole 1.
White, Blue, Red, Orange, Black, Green, Pink & Brown.
Web these two charts show the lift profile of the various holley fuel pump cams when located using hole 1. Web below you will find a chart and graph that illustrate the lift of each colored accelerator pump cam at various degrees of throttle rotation. Remember if you change you pump cam to readjust your accel pump linkage, you don't want to over extend it. Web pump cam lift vs.
Hold The Carb At Wot And Adjust The Spring On The Lever For 15 Thou Clearance Between It And The Pump Arm.
This will help you pick the next size up or next size down when changing them out. Categories / gauges and gauge accessories Get a #31 discharge nozzle installed. The pink cam is the least aggressive cam in the pack.
The Longer The Graph The Longer The Shot Duration Per Pump Shot And The Shorter The Graph The Shorter The Shot But Is A Quicker And Bigger But Less Duration Of Throttle Opening.
You will also probably wind up playing with squirters if you are trying to fix a stumble. The pump diaphragm, the pump cam and the pump nozzle. Web if your tuning a holley carb having the 50cc accelerator pump kit and a selection of accelerator pump cams, a set of jets, squirters,and power valves in your tool box and a decent vacuum gauge, to tune with is a big help at times The yellow and brown cams are for 50cc pumps.
Web The Chart Is Right.
Secondary pump cam is brown with a number 31 nozzle. Web the brown is a 50cc pump cam; None of this information will mean diddly squat if your pump arm follower. Holley includes a graph in the catalog we’ve reproduced for this article that shows how each of the cams alter the lift curve.