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    engine builders question

    On a Zetec it seems that there is an issue with the oil pump failing because of various reasons.
    And some say its because the flywheel and pulley being lightened and the crank walking/flexing.
    I am going with both on my build.
    Is there any advantage to studding the bottom end, does this help or it has no effect in that situation.
    I thought studding was more for extra loading during the power stroke with turbo and nitrous etc
    But true to form I have been wrong before and will be again so I thought I would ask.
    Thanks Gary

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    Re: engine builders question

    dry sump it
    sideways is the best way to turn a corner

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    Re: engine builders question

    What sort of bhp are you looking for . ?

    What car is it going in & what use ie fast road, race or rally?

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    Re: engine builders question

    studs wont stop a crank flexing

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    Re: engine builders question

    Black top engine, twin 40's, piper cam's ARP bolts, aluminum flywheel, 4 2 1 exhaust manifold
    Hoping for 200


    So keep it under 7000 and it should be okay.

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    Re: engine builders question

    67 Anglia road car

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    Re: engine builders question

    Quote Originally Posted by 105e gary View Post
    Hoping for 200
    With that spec - not a hope! Maybe 160/170? Crankcase flex isn't helped by removal of the cast aluminium girdle / sump piece and using a 'normal' RWD tin sump. Replacement cast aluminium sumps help. A steel windage tray may help but it will be minimal. I have to say that pump failure doesn't feature that often in threads so can't be that common!

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    Re: engine builders question

    That would be me reading other forums and them talking about mainly turbo engines breaking the oil pumps and I wanted to confirm that it was either rpm or boost.
    I kept the girdle and made up a rear sump as I put in a shortened Miata rack front steer in it and moved the firewall back.
    I shouldn't believe all the engine BHP claims that I have read I actually thought 190 -200 was obtainable with this package oh well a ST170 (SVT over here) or a 2.5 Duratec its going to have to be.
    Thanks for the enlightening and the information.

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    Re: engine builders question

    Quote Originally Posted by 105e gary View Post
    Black top engine, twin 40's, piper cam's ARP bolts, aluminum flywheel, 4 2 1 exhaust manifold
    Hoping for 200


    So keep it under 7000 and it should be okay.
    i doubt you will see 200, a standard zetec with exhaust and 45's will usually see 165 ish bhp, cant see you will gain 35bhp with cams and smaller carbs

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    Re: engine builders question

    Quote Originally Posted by 105e gary View Post
    That would be me reading other forums and them talking about mainly turbo engines breaking the oil pumps and I wanted to confirm that it was either rpm or boost.
    I kept the girdle and made up a rear sump as I put in a shortened Miata rack front steer in it and moved the firewall back.
    I shouldn't believe all the engine BHP claims that I have read I actually thought 190 -200 was obtainable with this package oh well a ST170 (SVT over here) or a 2.5 Duratec its going to have to be.
    Thanks for the enlightening and the information.
    over here they are using th ford 1.6 EcoBoost and its making 200+ but its down to how deep your pockets are
    sideways is the best way to turn a corner

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    Re: engine builders question

    Quote Originally Posted by jimmy2006 View Post
    over here they are using th ford 1.6 EcoBoost and its making 200+ but its down to how deep your pockets are
    With or without it's Turbo?

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    Re: engine builders question

    Quote Originally Posted by Forest_rallying View Post
    With or without it's Turbo?
    With the turbo
    sideways is the best way to turn a corner

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    Re: engine builders question

    I’m running 240hp ST170 engine, std crank, lightweight flywheel and standard front damper,

    Retroford cast sump with additional gating to prevent oil surge, billet oil pump gears

    Max RPM 8400, often held in the top 1500/2000 due to gearing and sequential gearbox

    No issues at all
    Last edited by lee edwards; 26-01-2021 at 23:21.

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    Re: engine builders question

    Quote Originally Posted by lee edwards View Post
    I’m running 240hp ST170 engine, std crank, lightweight flywheel and standard front damper,

    Retroford cast sump with additional gating to prevent oil surge, billet oil pump gears

    Max RPM 8400, often held in the top 1500/2000 due to gearing and sequential gearbox

    No issues at all
    N/A or Turbo?

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    Re: engine builders question

    Na

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    Re: engine builders question

    Quote Originally Posted by lee edwards View Post
    Na
    And what other mods are involved to end up with 240hp then?

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    Re: engine builders question

    Quote Originally Posted by rallyrob View Post
    And what other mods are involved to end up with 240hp then?
    12.5mm cat-cams / VVT removed
    CNC head
    45mm TB’s
    JE pistons / Eagle rods
    Simpson manifold

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    Re: engine builders question

    Quote Originally Posted by lee edwards View Post
    I’m running 240hp ST170 engine, std crank, lightweight flywheel and standard front damper,

    Retroford cast sump with additional gating to prevent oil surge, billet oil pump gears

    Max RPM 8400, often held in the top 1500/2000 due to gearing and sequential gearbox

    No issues at all
    Is it the I.K.E billet pump gear you have

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    Re: engine builders question

    Quote Originally Posted by Turboman View Post
    Is it the I.K.E billet pump gear you have
    It is mate yea

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    Re: engine builders question

    Quote Originally Posted by lee edwards View Post
    It is mate yea
    Thanks for the reply

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