460 oil priming problem
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460 oil priming problem

  1. #1
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    Default 460 oil priming problem

    just had a 460 rebuilt with all new bearings went to go prime it with a priming tool in a drill ccw and i first started with the filter cracked till it leaked out then tightened it up filled filter up but it never built pressure or came out of lifters or pushrods
    motor was just running and had good oil pressure before tear down everything was clean. reason i tore it down was to install a cam and heads and new hiflo dynamics oil pump. main bearins and rod bearings were plasti guaged and are in spec i did remove the frost plug on the back side of cam. when i reinstalled it did i possibly plug up an oil gally to the lifters?

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  3. #2
    Senior Member motor head's Avatar
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    It take a little time for it to get up there. You are spinning the pump counter clockwise right?
    [SIGPIC]

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    Quote Originally Posted by motor head View Post
    It take a little time for it to get up there. You are spinning the pump counter clockwise right?
    What he said. Distributor turns counter clockwise in BBF. Maybe a stuck relief valve in oil pump???

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    Quote Originally Posted by drivenmarine View Post
    just had a 460 rebuilt with all new bearings went to go prime it with a priming tool in a drill ccw and i first started with the filter cracked till it leaked out then tightened it up filled filter up but it never built pressure or came out of lifters or pushrods
    motor was just running and had good oil pressure before tear down everything was clean. reason i tore it down was to install a cam and heads and new hiflo dynamics oil pump. main bearins and rod bearings were plasti guaged and are in spec i did remove the frost plug on the back side of cam. when i reinstalled it did i possibly plug up an oil gally to the lifters?
    Is it possible the gasket was left out between the pickup and the Oil Pump?

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    yes i am turning it counter clockwise. i do have 5 psi after i repacked the pump with vasaline but no more than that and it wont go up the lifters so i took the pump apart and it looks like the relief is stuck open. i took an old pump apart and it was partially closed. the pump is brand new thru hi flo dynamics

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    Quote Originally Posted by drivenmarine View Post
    yes i am turning it counter clockwise. i do have 5 psi after i repacked the pump with vasaline but no more than that and it wont go up the lifters so i took the pump apart and it looks like the relief is stuck open. i took an old pump apart and it was partially closed. the pump is brand new thru hi flo dynamics
    You might want to talk with Paul before you take the pump to far apart. One of the mods he does gets the end of the relief out of the oil flow, at a glance it may look like its partially open but it shouldn't be open yet.

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    I seem to remember reading somewhere to have someone slowly rotate the crank while priming. Had something to do with position of the lifters in the bore keeping oil from going into the lifter.
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    after doing some investigating my oil pick up tube is touching slightly to the pan after market pan and pick up tube which said they were capatable but guess not

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    Quote Originally Posted by drivenmarine View Post
    after doing some investigating my oil pick up tube is touching slightly to the pan after market pan and pick up tube which said they were capatable but guess not
    When I bought my oil pump from Paul Kane Highflow He instructed me to make sure I had the right pickup to pan clearance! Suprizing he didn't mention it to you!

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    what is the correct clearance i was told 1/4 inch to 1/8

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    Quote Originally Posted by drivenmarine View Post
    what is the correct clearance i was told 1/4 inch to 1/8
    I bought a Armondo pan and set it at 3/8" plus whatever gasket width is. Working fine.

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    Quote Originally Posted by drivenmarine View Post
    what is the correct clearance i was told 1/4 inch to 1/8
    3/8 " - 1/2" +/-

    1/8 is way to close

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    Quote Originally Posted by johnf View Post
    When I bought my oil pump from Paul Kane Highflow He instructed me to make sure I had the right pickup to pan clearance! Suprizing he didn't mention it to you!

    I'd bet he did. I've got three pumps from Paul over the past couple of years..... he has told me each time.

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    Quote Originally Posted by [email protected] View Post
    Is it possible the gasket was left out between the pickup and the Oil Pump?
    that would have to be one warped surface ..I've run pumps with and without the gasket.

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