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Thread: Ported Zetec head service for 320 Group buy 4 or more.

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    Ported Zetec head service for 320 Group buy 4 or more.

    This includes all Zetec heads, silver, black, ST170, and RS

    this offer is a group buy so new four or more.

    Heads will stripped, inspected, pressure tested, x-rayed, ported, polished valves, new seals, lapped in valves, skimmed, rebuilt and sent back to you..

    normal price is 450
    A.L. Developments Fabrication and Engineering
    Cylinder head ported and polish work for
    Ford Zetec, ST170, CVH, 2.0/2.3 Duratec, I4, Volvo Modular head I'E Focus ST/RS 2.5, N/A YB
    XE, Vag 1.8 20vT, Vag BJS/BML, Vag AGZ/AQN ,F4R730 172/182, C1J Turbo

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    Re: Ported Zetec head service for 320 Group buy 4 or more.

    hi are these gas flowed for the porting?

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    Re: Ported Zetec head service for 320 Group buy 4 or more.

    Quote Originally Posted by LAWRENCEM View Post
    hi are these gas flowed for the porting?
    porting is the modern term for what was always known as gas flowing, the two things are the same.

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    Re: Ported Zetec head service for 320 Group buy 4 or more.

    Gas flowing is a old school term.. All the same thing at the end of the day.
    A.L. Developments Fabrication and Engineering
    Cylinder head ported and polish work for
    Ford Zetec, ST170, CVH, 2.0/2.3 Duratec, I4, Volvo Modular head I'E Focus ST/RS 2.5, N/A YB
    XE, Vag 1.8 20vT, Vag BJS/BML, Vag AGZ/AQN ,F4R730 172/182, C1J Turbo

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    Re: Ported Zetec head service for 320 Group buy 4 or more.

    I thought the gas flowing allowed you to see if your porting was done correctly- by flowing a gas through the ports and looking or measuring at the flow rate? If you don't use that how do you know if you are porting correctly?

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    Re: Ported Zetec head service for 320 Group buy 4 or more.

    What you are referring to is flow testing as on a, or using a flow bench - this measures the performance of the gas flow job. A expert porter will, through experience, know the areas of the port to improve and use the flow bench to test the final result. BUT a flow bench result can't replicate real world in use flow with fuel atomisation and turbulence from carbs / throttle blades etc etc. so like a dyno should only be used as a tuning tool to indicate trends and not a 'be all and end all' definitive result.

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    Re: Ported Zetec head service for 320 Group buy 4 or more.

    first off, you can get a long way simply with experience, i'd say teh large majority of modifed heads have not been deveolped or even been anywhere near a flow bench, professional flowbenchs are not cheap!

    blind principles will get you a long way with a lot of heads, however there comes a point where that doesnt work, some heads want material removed from places that wouldnt want removeing from others, ive dont a shed load of testing on a head recently, by removing material and re testing i found flow gains, but without the bench i couldnt of quantified the gains, or you can easily end up a design which flows really well but only beyond wher the cam actually lifts to.

    a flowbench cannot replace a dyno, but there are very few cases where a cylinder head improvement isnt a good thing.

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    Re: Ported Zetec head service for 320 Group buy 4 or more.

    Quote Originally Posted by LAWRENCEM View Post
    I thought the gas flowing allowed you to see if your porting was done correctly- by flowing a gas through the ports and looking or measuring at the flow rate? If you don't use that how do you know if you are porting correctly?
    No gas is flowed though the heads, forced air is used via a vacuum and yes I have a flow bench and use it to spec my heads to the needs of the owner and the spec of the engine.

    I rather see dyno figures rather than flow figures

    I have lots of customers using my heads and all making good power. There is one lad on here with a ST170 engine in a mk2 escort running 220bhp. Easy I hear you say. 220bhp and still on a standard inlet that is.

    If you want to see more of my work have a look here
    https://www.facebook.com/AL-Developm...homepage_panel
    Last edited by Andrew@ALD; 20-10-2015 at 23:56.
    A.L. Developments Fabrication and Engineering
    Cylinder head ported and polish work for
    Ford Zetec, ST170, CVH, 2.0/2.3 Duratec, I4, Volvo Modular head I'E Focus ST/RS 2.5, N/A YB
    XE, Vag 1.8 20vT, Vag BJS/BML, Vag AGZ/AQN ,F4R730 172/182, C1J Turbo

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    Re: Ported Zetec head service for 320 Group buy 4 or more.

    My flowbench

    A.L. Developments Fabrication and Engineering
    Cylinder head ported and polish work for
    Ford Zetec, ST170, CVH, 2.0/2.3 Duratec, I4, Volvo Modular head I'E Focus ST/RS 2.5, N/A YB
    XE, Vag 1.8 20vT, Vag BJS/BML, Vag AGZ/AQN ,F4R730 172/182, C1J Turbo

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    Re: Ported Zetec head service for 320 Group buy 4 or more.

    Looks good. Is this going to benefit standard camshafts in a 2.0 blacktop and how much extra Hp will I gain - I will hopefully be using jenveys when I have saved up enough money!

    And is it exchange or do I send my head in first?

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    Re: Ported Zetec head service for 320 Group buy 4 or more.

    Yes you will benefit with a standard cams

    HP will depend on on the rest of the engine and spec

    No exchange sorry
    A.L. Developments Fabrication and Engineering
    Cylinder head ported and polish work for
    Ford Zetec, ST170, CVH, 2.0/2.3 Duratec, I4, Volvo Modular head I'E Focus ST/RS 2.5, N/A YB
    XE, Vag 1.8 20vT, Vag BJS/BML, Vag AGZ/AQN ,F4R730 172/182, C1J Turbo

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    Re: Ported Zetec head service for 320 Group buy 4 or more.

    Hi,

    I have a 2.0lt stock zetec with ITB's and am now looking for more HP. I see that you are in Leeds. If I were to send/bring my head to you, what is your usual turn around. Also what is the likely HP gain with ITB's - Jenvey 45's

    Thanks,

    Craig

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    Re: Ported Zetec head service for 320 Group buy 4 or more.

    Hi,

    I have a 2.0lt stock zetec with ITB's and am now looking for more HP. I see that you are in Leeds. If I were to send/bring my head to you, what is your usual turn around. Also what is the likely HP gain with ITB's - Jenvey 45's

    Thanks,

    Craig

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