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  1. #841
    Gold Member Pacman's Avatar
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    4th Gen
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    Vti-R
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    So the front engine mount can be modded without it having to be signed off by an engineer?
    Can't help but wonder wether having a brother who has just finished his degree in mech engineering can work to my advantage.... Hmmmmmm.....!!
    http://www.preludeaustralia.com/foru..._view&id=12025
    Link to my garage.^^^^

    When words fail, VTec speaks!

    Quote Originally Posted by EXO8IC View Post
    My car is a twin turbo and has a blow valve with another little valve thing attached which silences that WOOSH (which I HATE) but it makes more of a strange sucking noise which can be heard quite loudly from my vents on the bonnet. It's quite odd...

  2. #842
    QLD Administrator AdReNaLiN's Avatar
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    Quote Originally Posted by Pacman View Post
    So the front engine mount can be modded without it having to be signed off by an engineer?
    Can't help but wonder wether having a brother who has just finished his degree in mech engineering can work to my advantage.... Hmmmmmm.....!!
    I dont see how this would be any different to installing a set of aftermarket engine mounts from ESP or one of the other big name aftermarket mounts...

    I doubt anyone has ever got an engineer to look over their setups either.

  3. #843
    Gold Member phattzy's Avatar
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    3rd Gen
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    si 4ws TURBO
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    Quote Originally Posted by AdReNaLiN View Post
    Nah, you dont need it engineered, its simply a front torque mount. I'm getting a friend who works at an engineering shop to supply me with the parts to make it myself. He talked to the other lads in the shop and they reckon it will be sweet.
    all good then .


    GARAGE : http://www.preludeaustralia.com/foru..._vehicle&id=30

    BUILD THREAD : http://www.preludeaustralia.com/foru...o-3rd-gen-lude

    VIDEOS

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    Quote Originally Posted by SAKI View Post
    PS: Can't wait to see your beast in action.. going to be one the highest power 3rd gens out there i reckon..
    Quote Originally Posted by Pacman View Post
    I am going down now to show them mine....

  4. #844
    Junior Member
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    5th Gen
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    Jul 2010
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    Victoria
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    Very nice build, lot of effort has gone in to it....looking forward to seeing this thing on the road.

  5. #845
    QLD Administrator AdReNaLiN's Avatar
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    Quote Originally Posted by LEWD View Post
    Very nice build, lot of effort has gone in to it....looking forward to seeing this thing on the road.
    Means alot coming from you mate
    Your car is an inspiration.

  6. #846
    QLD Administrator AdReNaLiN's Avatar
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    So I've been mucking around with engine mounts for the last few days. Here's what I've come up with.


















    Obviously nothing's welded up yet, that will happen tomorrow night!

    Before you comment on solid engine mounts, be aware the lower bracket is going to be sandwitched between 2 poly bushings either side of the bolt. Should give it a little bit of vibration dampening and flex.

    Also, the rod ends are M12 which is the same size as the factory engine mount bolts. Should be enough to hold the force of the engine.

  7. #847
    Gold Member JSpec's Avatar
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    Si-Vtec
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    Fancy! Looks effective. Not worried too much about vibration?
    Want to see my car? Click here!
    ....................

  8. #848
    QLD Administrator AdReNaLiN's Avatar
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    Quote Originally Posted by AdReNaLiN View Post
    Before you comment on solid engine mounts, be aware the lower bracket is going to be sandwitched between 2 poly bushings either side of the bolt. Should give it a little bit of vibration dampening and flex.
    Read the above ^

  9. #849
    Gold Member phattzy's Avatar
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    si 4ws TURBO
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    he asked if YOU are worried about engine vibration ? and as im going to ask are you worried about engine vibration ? just with all the att to detail i though soild mount wouldnt be your thing dude ? im not having ago at you . just interested on your take of soild mount ?
    Last edited by phattzy; 29th July 2010 at 12:25 AM.


    GARAGE : http://www.preludeaustralia.com/foru..._vehicle&id=30

    BUILD THREAD : http://www.preludeaustralia.com/foru...o-3rd-gen-lude

    VIDEOS

    http://www.youtube.com/watch?v=usazsV_c_zU
    http://www.youtube.com/watch?v=psgNZjLqRrw
    http://www.youtube.com/watch?v=BRn-1Oeashw

    Quote Originally Posted by SAKI View Post
    PS: Can't wait to see your beast in action.. going to be one the highest power 3rd gens out there i reckon..
    Quote Originally Posted by Pacman View Post
    I am going down now to show them mine....

  10. #850
    Gold Member hiru's Avatar
    Generation
    Other Honda
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    Si 4ws
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    clearly he's not. lol

  11. #851
    Gold Member peejayy's Avatar
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    VTEC
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    Haha! Nice work. Everyone Loves a bit of good vibrations. And good it will be. Boosted H22, how could it be anything but.

    You have skills buddy.


    m:0432 699 951 e:pujitha115@optusnet.com.au msn:peejayy@hotmail.com

  12. #852
    QLD Administrator AdReNaLiN's Avatar
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    Are you guys not reading? Its not solid mounted. It will be sandwitched between poly bushings on the lower bracket.

    The vibration should be minimal anyway as the engine is completely balanced internally.

  13. #853
    Senior Member Si_4ws's Avatar
    Generation
    3rd Gen
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    VTEC
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    Mount looks good,
    My 2c, take with a grain of salt if you wish...

    Would add another bit of plate here



    Also there is no point using 6mm plate if the RHS you cut is so thin.

    Assuming the max torque produced is ~500Nm once you have some crazy boost going through, then the reaction at the mount will be (assuming the front and back mounts are of equal distance from the crankshaft, the side mounts hold no moment, and the distance is approx 350mm from the centre of the crankshft) 500x0.5 / 0.35
    =714N
    That is the reaction on the mount in tension when the engine is at max torque

    The killer will be when you drop the clutch. Not sure what that force will be.... Need to know moment of inertia of bottom end, have no idea!

    The reason I recommend that extra plate is because the the bolt in the bottom of the engine will act like a pin, and the bottom part of the mount will want to rotate anticlockwise. The only thing stopping it from rotating is the connection to the top part of the mount. The bolts on the top part of the mount will stop any rotation.

    The orientation of the connection you have placed there is ideal for resisting bending, but doesn't offer much resistance to the moment that will be caused due the to twisting of the bottom part of the engine mount. It wouldn't matter too much if there were two bolts on the bottom part of the engine mount, But I believe a stress analysis of the engine mount you have drawn there will show that the greatest stress will be where the connecting piece is joined to the bottom part, right above the rose joint. Because of this I recommend putting a stronger connection between the top and bottom parts of the engine mount, like the plate I have tried to draw with paint......

    Just my 2c, take it or leave it, you seem to be doing an awesome job, very impressive build thread!
    Last edited by Si_4ws; 29th July 2010 at 12:18 PM.


    81 x 95..... probably could have made a decent tractor engine

  14. #854
    Gold Member JSpec's Avatar
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    I read it clearly, was just asking if you were not worried about a bit of vibration.
    Want to see my car? Click here!
    ....................

  15. #855
    QLD Administrator AdReNaLiN's Avatar
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    The engine mount is finally finished PJF_Lude has the pictures of the fabrication...
    There's a couple of little suprises with the design. Its a lot cleaner than the previous mockup, and notes/consideration was taken from people's responses in this thread - and I thank you guys for that.

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