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gofastpilot

10-09-2002 07:06 PM

HP500 carb jetting

Can someone tell me what the jet sizes are suppose to be for the 800cfm Holley on the HP500-502ci motor.....thanks:)

tomcat

10-09-2002 08:15 PM

Mercury Service Manual #3 - 1994

Holley No. 80466 - 800 CFM

Primary - Port 81, Stbd 75
Secondary - Port 89, Stbd 93

Power valve - front 6.5, rear - none

Accelerator pump - Primary - 50cc, Secondary - 50cc

Accelerator nozzle - Front - #37. Rear - #37

sheikman1

10-10-2002 10:49 AM

jetting

Help me here,

Why are the port and starbord jets different on primary and secondary?

How about a 540 CI. ??

What jets here o swami....

Thanks
Sheikman

Griff

10-10-2002 02:44 PM

The stock HP500's use different jetting on port and starboard to get equal fuel distribution to all cylinders.

cuda	04-13-2007 06:19 PM

I just recently opened up a completely stock HP 500 800 cfm carb, and these were the jets in them.

Primaries 75 & 80
Secondaries 89 & 93

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