Holley Pump Cam Chart - The chart is for the 30cc pump cams. Hold the carb at wot and adjust the spring on the lever for 15 thou clearance between it and the pump arm. The #1 & #2 refers to the holes in the throttle lever for the screw that attaches the cams, positions 1 and 2. If holes 2 or 3 are used, the motion is retarded (moved to the right on the graph by about 5 to 8 degrees). But that does not seem to relate with the chart at all that i can tell. Secondary pump cam is brown with a number 31 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 Remember if you change you pump cam to readjust your accel pump linkage, you don't want to over extend it. This will help you pick the next size up or next size down when changing them out. Everything is adjusted as it should be.
Confusion in Tuning the Holley Accelerator Pump Cam CorvetteForum
Web below is pic of holley pump cams, and how they deliver fuel based on throttle positions. Throttle position 41r643 yellow 41r336 brown 41r427 blue.
Holley accelerator pumps/cams Grumpys Performance Garage
The pink cam is the least aggressive cam in the pack. Web use # 2 holes in the cam and carb positions for starting. Holley.
Holley Pump Cams
Web pump cam lift vs. In the days of `57 ford 312’s and `60 dodge 383’s the purpose was for a summer and winter setting.
Holley accelerator pumps/cams Grumpys Performance Garage
Web the brown is a 50cc pump cam; The chart is for the 30cc pump cams. Web if your tuning a holley carb having the.
Holley accelerator pumps/cams Grumpys Performance Garage
Throttle position 41r643 yellow 41r336 brown 41r427 blue 41r466 orange 41r290 green 41r240 red 41r218 white 41r330 pink 41r234 black. Secondary pump cam is brown.
Holley accelerator pumps/cams Grumpys Performance Garage
My combination and dyno sheet: Web use # 2 holes in the cam and carb positions for starting. Web i also run the pink cam.
Holley 50cc Pump Cam Chart A Visual Reference of Charts Chart Master
Web the brown is a 50cc pump cam; Web below is pic of holley pump cams, and how they deliver fuel based on throttle positions..
Carb Science Series — Accelerator Pump Tuning for Holley Carburetors
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.
Holley pump cam color ID info Vintage Mustang Forums
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.
Holley vac. sec. question Team Camaro Tech
Hold the carb at wot and adjust the spring on the lever for 15 thou clearance between it and the pump arm. If holes 2.
Web I Also Run The Pink Cam On My 600 Dp That Has Been Substantially Modified For Better Flow.
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. Hold the carb at wot and adjust the spring on the lever for 15 thou clearance between it and the pump arm. 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 My combination and dyno sheet:
As For The Pump Cams, Does What’s In There Sound Right?
If holes 2 or 3 are used, the motion is retarded (moved to the right on the graph by about 5 to 8 degrees). Also in plumbing an fittings and hose. Web below is pic of holley pump cams, and how they deliver fuel based on throttle positions. Web when you look through holley literature and videos regarding tuning the accelerator (squirter) pump cam, most say to use position 1 (smaller squirt later) for heavy cars and position 2 (bigger squirt earlier) for a light car.
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 #1 and #2 used to be called summer and winter, with winter being slightly more volume due to temps and fuel. Holley includes a graph in the catalog we’ve reproduced for this article that shows how each of the cams alter the lift curve. The yellow and brown cams are for 50cc pumps. Get a #31 discharge nozzle installed.
They Will Not Work With 30Cc Pumps.
I’m thinking the nozzle should be around 27 on the front, unsure what it should be on the back. But that does not seem to relate with the chart at all that i can tell. Web white and pink cams are a good starting point, as they are more linear. The pink cam is the least aggressive cam in the pack.