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Thread: LSA Lid Spacers

  1. #21
    Join Date
    Sep 2016
    Posts
    4
    Quote Originally Posted by markalan1two View Post
    would be nice to see a video standard, with the spacer, than with the spacer and interchiller if possible
    Yes, I'm waiting to see the results of this too. Is this going to be one of those early/cheaper mods to get some decent gains or will it be for someone chasing HP and track times ???

  2. #22
    Join Date
    Mar 2011
    Location
    S.e Melbourne..!
    Posts
    612
    Top quality fit out compared to some of the USA made ones..the yanks have been running these on their lsa's for years..! Obviously not many on here follow any of the USA forums...!

  3. #23
    Join Date
    Feb 2014
    Posts
    4,232
    LSA lid spacers have started shipping out this week we have had quite a large response. For those asking about dyno results we will be doing a back to back very soon.

    2014 HSV GenF-GTS fitted with a Forced Induction Interchiller
    http://www.facebook.com/ForcedInductionInterchillers
    10.373 @135.70mph 29/May/2016
    V-Box Results 0-100km/h in 2.89sec
    V-Box Results 0-60mph in 2.76sec

    Looking for colder IAT's? we have achieved 11c IAT2 on a 41c day and -8c during winter.
    We have proven cabin AC vent temps are better than GM spec, both IAT2's and vent temps are all on video with nothing to hide.

  4. #24
    Join Date
    Nov 2011
    Location
    North West NSW
    Posts
    228
    Quote Originally Posted by GenF-GTS View Post
    LSA lid spacers have started shipping out this week we have had quite a large response. For those asking about dyno results we will be doing a back to back very soon.
    Be fantastic to see the dyno comparison results. One could imagine the outcome will be variable, depending on the boost pressure the engine is producing???
    Previous 2011 MY 12 VE R8 Maloo -Perfect Blue
    Current 2013 VF GTS - Herron White

  5. #25
    i'd like to see stock engine no other mods back to back

  6. #26
    Join Date
    Jan 2004
    Location
    Perth, WA
    Posts
    6,409
    Quote Originally Posted by markalan1two View Post
    i'd like to see stock engine no other mods back to back
    I understand why but I don't think this would be most people's first modification. You'd get better bang for buck with other options. Not knocking the product, I just think most people would do an intake, more boost etc before this option.

    Whilst it will likely still have some improvements, the gain will be more noticeable when the blower is working harder.

  7. #27
    Join Date
    Feb 2017
    Posts
    4
    I'm also interested in test results. Have you also looked at how much the manifold volume is increasing? I assume from a % perspective probably not a great deal?

  8. #28
    you could work it out with the area length X width X 0.1

  9. #29
    Join Date
    Feb 2014
    Posts
    4,232
    Quote Originally Posted by sdtash View Post
    Be fantastic to see the dyno comparison results. One could imagine the outcome will be variable, depending on the boost pressure the engine is producing???
    We've managed to booked in some dyno time for this weekend, using NickGTS's car it's it medium/high HP car still stock LSA cam and stock LSA heads so dyno numbers are going to be relative to most people.

    My personal opinion is that this will make a HP gain more on higher HP cars but also on a stock LSA's for 2 reasons, 1 colder intake temps, 2 more air flow.

    Basically it's been brought to my attention from our US customers with the ZL1 Camaro that the rear "curve" in the LSA supercharger lid is because of the camaro's engine bay, there is zero room back there and they have had to shape the rear of the lid to make it fit, there is literally threads online asking how to remove the rear charger bolts as they cannot get to them, the procedure is to drop the engine down or drill holes in the panel, hence why the CTS-V has a different lid without such a sharp curve as it has more real estate.

    Our VE/VF has buck loads of room so this is a non issue for us guys.
    Being we get the hand me downs here for the HSV this "curve" in the lid has not been altered and we have a major lack of airflow to the rear cylinders.

    Admittedly we never picked up on this lack of air flow as we were looking at lid/blower surfaces to design the plate for colder IAT's not until we test fitted it to a car we then found an oil trace on the lid itself going to the rear cylinders on both sides of the lid and runners, all other cylinders and runners were clean, this proves that the other cylinders have lots of air flow and the oil is being cleaned/scrapped away from sheer air volume and velocity.

    Then visually looking at the lid you can clearly see it's squashed way too much and basically this "curve" is not needed on our cars.

    By increasing this squashed area of the blower more air is going to get into the rear cylinders (more air = more bang = more HP)

    Along with the benefit of also having colder IAT's combined.
    When NickGTS tested at the track without any tune changes at all it was showing 1-1.5mph, his IAT logs also showed colder intake temps throughout the pass.

    You can again see in this picture how restricted the rear cylinders are.
    End of the day the spacer does 3 major things colder IAT's and more air flow from the blower discharge going through the entire surface of the brick and more air to all cylinders.



    This is the ZL1 engine bay and the reason why the lid is so squashed with the "curve".

    Last edited by GenF-GTS; 15-02-2017 at 01:24 PM.

    2014 HSV GenF-GTS fitted with a Forced Induction Interchiller
    http://www.facebook.com/ForcedInductionInterchillers
    10.373 @135.70mph 29/May/2016
    V-Box Results 0-100km/h in 2.89sec
    V-Box Results 0-60mph in 2.76sec

    Looking for colder IAT's? we have achieved 11c IAT2 on a 41c day and -8c during winter.
    We have proven cabin AC vent temps are better than GM spec, both IAT2's and vent temps are all on video with nothing to hide.

  10. #30
    Join Date
    Jun 2013
    Location
    Sth West Syd ��
    Posts
    1,262
    Would the CTS-V lid be a straight swap and would it be worth changing too if it's designed better


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