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P pump - Conflicting timing specs information throughout diesel forums on the net.

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P pump - Conflicting timing specs information throughout diesel forums on the net.

  #1  
Old 04-10-2019, 03:15 PM
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Default P pump - Conflicting timing specs information throughout diesel forums on the net.

Could someone chime in and explain p7100 timing?
Incorrect information is posted on different sites concerning (specifically) how much movement on dial gauge, when inserted and is stationary in the #1 delivery valve port, equals a particular degree in timing alteration ............

One guy tells members that (0.1 mm at dial movement equals 1.5 degrees in timing change)
Another tells members that (1.0 mm at dial movement equals .5 degrees in timing change)

Briefly clear up this simple mis-information so no one "throws a wrench in their machine"
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Old Yesterday, 01:05 PM
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You need the specific lift measurements for the cam in your particular pump.

There were different cams used in the various versions of the p-7100 used in the Cummins application. Also an aftermarket pump often times has a different cam.

My 13mm p-7100 has a custom ground cam and none of the timing lift charts for stock applications apply.

What model pump pump are you trying to time?
 
  #3  
Old Yesterday, 04:12 PM
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Default P pump timing

Hey ... Good Easter to ya

160 pump 12.3 degrees factory.
180 pump 14 degrees factory.
Both with matching internals.

Stock cam, 181 delivery valves, #10 plate 3/4 forward-ish, afc 3/4 forward-ish, afc foot modified, diaphragm washer modified, 4k gov springs.

Fueling 215 injectors and nv4500 tranny.
(Ranch trucks pulling horse trailers ... No hot rodding allowed)
 

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