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  •  » Calling all engine builders

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    6/17/2026 11:06 AM  #1

    Glens 1965 50
    I FYI 24-7

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    From: Tomball,Tx
    Registered: 4/01/2013
    Posts: 301

    Calling all engine builders

    I'm working on a 66 coupe that has a 302 in it.  It has a mild cam, roller rockers, Edlebrock heads and intake.

    It has a lifter tick that I'm trying to eliminate.  Ran all the valve lash and still that clicking sound.  Went to do a hot lash with the engine running.  Was going to back the nut off until it clicks, tighten until quiet and then a half turn.  Removed valve cover and had a 6-7" carboard dam for oil deflection.  Started the engine and oil sprayed 5-6 FEET out of the push rods. I have never seen that before. 1-2" sure but 5 feet from pushrods over/on the fender and so on.
    What would cause that? Pumping so hard that the pcv is sucking up oil and smoking like a train. Oil pressure gauge is at 40 psi.
     

    Bullet Bob equipped car!
     

    6/17/2026 3:45 PM  #2

    TKOPerformance
    Hyper FYIFORD ADDICT

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    From: Newark, DE
    Registered: 12/15/2014
    Posts: 8,083

    Re: Calling all engine builders

    High volume oil pump would be my first thought.  

     

    6/18/2026 5:05 AM  #3

    Jim Bowie
    FYI Addict

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    From: Mequon Wis
    Registered: 4/08/2013
    Posts: 268

    Re: Calling all engine builders

    Maybe blockage in main oil line and causing it to act like a nozzle. 

     

    6/18/2026 5:10 AM  #4

    BobE
    Senior 24-7 FYI Addict

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    From: White Plains, NY
    Registered: 4/04/2013
    Posts: 3,084

    Re: Calling all engine builders

    I would think that high pressure would cause that condition.  I'd check the gauge you have, and maybe try another gauge.
    Maybe another thing to consider could be the hole in the rocker arm might be larger than 'normal', allowing more oil to escape (?)

    65 Fastback, 351W, 5-speed, 4 wheel discs, 9" rear,  R&C Front End.
     

    6/20/2026 12:08 AM  #5

    jkordzi
    I FYI 24-7

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    From: Sequim, WA
    Registered: 12/28/2013
    Posts: 944

    Re: Calling all engine builders

    I don't think it's all that unusual for a high idle situation, with a warmed up engine.  If in your experience it is for that motor, then I'd consider the following: high volume oil pump causing it, oil is too thin, worn lifters or very light preload.  Also, I've been fooled by what I thought was a lifter tick, only to later discover it was an exhaust leak.  As for the PCV valve, do your valve covers have a baffle with something to break up the oil like stainless steel wool?  If not, and combined w/ oil you know is being circulated up there, it wouldn't be surprising to have the PCV suck it up and pass it to the intake manifold.

    Cheap, Fast, Good:  Pick Any Two
     

    6/21/2026 2:29 PM  #6

    Glens 1965 50
    I FYI 24-7

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    From: Tomball,Tx
    Registered: 4/01/2013
    Posts: 301

    Re: Calling all engine builders

    Thanks guys for all of the comments.  Just a follow-up.  Used new gauge and it's showing 52 psi at idle so it appears this engine has a HP oil pump.  Installed a catch can on the pcv and that controlled oil consumption at idle only.   The valve cover does have a baffle in it but no mesh.

    Ran a compression test on the easy side #1-176, 2-177, 3-160 and #4-200.  It appears this engine has some internal issues.  We will see what the owner wants to do.

    Bullet Bob equipped car!
       •Thread Starter
     

    6/22/2026 4:57 AM  #7

    TKOPerformance
    Hyper FYIFORD ADDICT

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    From: Newark, DE
    Registered: 12/15/2014
    Posts: 8,083

    Re: Calling all engine builders

    Make sure there's no leakage at the fitting for the compression tester.  Another trick is shoot some oil in the cylinder and retest.  If the numbers improve the rings are the culprit.  

     

    6/22/2026 6:04 AM  #8

    BobE
    Senior 24-7 FYI Addict

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    From: White Plains, NY
    Registered: 4/04/2013
    Posts: 3,084

    Re: Calling all engine builders

    The general rule-of-thumb on the differences between the highest and lowest cylinder pressure readings should be within 10% to be considered OK. 
    Agree w/TKO, try shooting oil in the cylinder and recheck. Helps pinpoint where the problem is. 

    65 Fastback, 351W, 5-speed, 4 wheel discs, 9" rear,  R&C Front End.
     

    6/25/2026 1:31 PM  #9

    6sally6
    Hyper FYIFORD ADDICT

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    From: Surfside Beach,SC
    Registered: 4/02/2013
    Posts: 7,044

    Re: Calling all engine builders

    You sure the ticking sound isn't the fuel pump(mechanical)?  Mine fooled me for a while.
    6sally6

    Get busy Liv'in or get busy Die'n....Host of the 2020 Bash at the Beach/The only Bash that got cancelled  )8
     

    6/25/2026 2:31 PM  #10

    Glens 1965 50
    I FYI 24-7

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    From: Tomball,Tx
    Registered: 4/01/2013
    Posts: 301

    Re: Calling all engine builders

    It crossed my mind but the other lifters were out of whack to.

    Bullet Bob equipped car!
       •Thread Starter
     

     

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