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Thread: Escort Mk2 WCXM lug mount BDA fitting position

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    Mechanic hawk1903's Avatar
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    Escort Mk2 WCXM lug mount BDA fitting position

    Dear Friends,

    I would be grateful if you could advise the correct fitment/position of the BDA engine/block when using a lug mount Gr.4 WCXM.

    Due to the fact I have noticed some variations in my WCXM and engine mounts I am confused.

    One of my WCXM and mount combination giving a left yawed and another one giving a right yawed position to my engine but none of the WCXM is giving a parallel position to chassis legs. ( yaw around vertical axis )

    Is this slight yaw normal or something is wrong or the engine should be parallel to chassis legs ?

    I am aware of the fact that the BDA engine must be positioned off center ( to the left of the car ) to center axis of the body shell in order to allow sufficient clearance for the air filter but I am confused with the "yaw " situation.

    And if there must certainly be yaw, which is the correct side of the yaw for the rear side of the engine/block regardless of it is a LHD or RHD car ?

    When there is a lateral yaw, it means that the output shaft of the gearbox is not inline with the axle's pinion flange. Is this acceptable and if it is acceptable, to what extent it is acceptable ?

    Please note that, all my WCXMs are providing the necessary 4 degree rearwards tilt angle to the engine to match the axle's tilt angle.

    Regards

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    Re: Escort Mk2 WCXM lug mount BDA fitting position

    Hello,
    as you say the BDA engine is normally towards the left of the car to give room for the air filter (housing).
    As the engine is attached to the gearbox and the hole for the gearlever is in the middel of the car, you automaticaly get a bit of "yaw".
    Even after using a matched set of WCXM and engine mounts (from same supplier) all of my BD's needed changing of the engine mounts as there was not enough room for the exhaust manifold. Even with a small bore Janspeed manifold.
    All my engines are (were) more towards the middle of the engine bay.
    Regards, Leon.

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    Mechanic hawk1903's Avatar
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    Re: Escort Mk2 WCXM lug mount BDA fitting position

    Quote Originally Posted by Miniliteman View Post
    Hello,
    as you say the BDA engine is normally towards the left of the car to give room for the air filter (housing).
    As the engine is attached to the gearbox and the hole for the gearlever is in the middel of the car, you automaticaly get a bit of "yaw".
    Even after using a matched set of WCXM and engine mounts (from same supplier) all of my BD's needed changing of the engine mounts as there was not enough room for the exhaust manifold. Even with a small bore Janspeed manifold.
    All my engines are (were) more towards the middle of the engine bay.
    Regards, Leon.
    Hello Leon,

    I understand what you mean.
    Being on the the left of the center axis of the bodyshell is quite normal with any BDA WCXM & mounts as you also said due to the air filter clearance.
    But I think in your scenario is: the engine is/was on the left ( off center ) but still parallel to the chassis legs.
    Where as when I mentioned “ yaw “ I meant to say “ yaw around the vertical axis “. Imagine a vertical axis passing between block and bellhousing and the the engine/gearbox is yawed to the either side. So not parallel to the chassis legs anymore.
    With my various WCXMs I am getting this yaw. Either to the left or right but still being on the left side of the center.
    So, I am wondering towards which side should be the correct yaw ?

    Regards
    Kerem

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    Re: Escort Mk2 WCXM lug mount BDA fitting position

    The engine is not completely off centre in an Escort it is "skewed" from the North-South axis (see photo).
    So not parallel to the chassis rails.

    Click image for larger version Name:	WalterDavies-Ford-EscortRS1600-BA.jpg Views:	56 Size:	93.6 KB ID:	87317

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    Re: Escort Mk2 WCXM lug mount BDA fitting position

    Quote Originally Posted by Miniliteman View Post
    The engine is not completely off centre in an Escort it is "skewed" from the North-South axis (see photo).
    So not parallel to the chassis rails.

    Attachment 87317
    Great photo Leon, Many thanks this is very helpful.
    I guess skew was the right word/description.
    I believe this position is not disturbing the shaft' UJs.
    However, a friend of mine somehow fitted his engine fully parallel to the chassis legs but he was using chassis mounted engine. Still on the left side of the center axis.
    Regards
    Kerem

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    Re: Escort Mk2 WCXM lug mount BDA fitting position

    useful, I didn't know that.
    That'll promise some headaches when I'll setup mine, using modern throttle bodies.... I don't know about air filter room left !

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    Re: Escort Mk2 WCXM lug mount BDA fitting position

    Quote Originally Posted by Mkdu View Post
    useful, I didn't know that.
    That'll promise some headaches when I'll setup mine, using modern throttle bodies.... I don't know about air filter room left !
    I think depending on the TBs you may have less headache than the carburetors. Some TBs are tilted upwards which will help clearing the inner wing.

    By the way, it seems that most of the WCXM/mounts are giving that “skew “. There are also some people fitting their engines parallel to the chassis legs but still on the left of the center line hence the air filter clearance.

    I have various WCXMs and each one is positioning the engine differently. Currently I have installed one with a slight skew. Little less skew than seen in Leon’s post.

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    Re: Escort Mk2 WCXM lug mount BDA fitting position

    I did some calculation with a dummy head for the length, I can change the extension tube on TB assembly to shorter them.

    The jenvey inlet manifold goes upwards.

    But I didn't have the exhaust at that moment, that'll could be an issue as I can read from you guys.
    Last edited by Mkdu; 04-08-2021 at 11:37.

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    Re: Escort Mk2 WCXM lug mount BDA fitting position

    Also some WCXM / engine mounts set the engine too low for a normal (wet-) sump. Easy way to solve this is to add a metal plate between engine mount and engine. This pushes the engine upwards a bit.

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    Re: Escort Mk2 WCXM lug mount BDA fitting position

    Yes, I already did that for the cosworth to clear the sump even I'm not using a WCXM.

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