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Thread: LSA Lid Spacers

  1. #41
    Join Date
    Feb 2014
    Posts
    4,285
    Guess those LSA lid spacers did the trick Brett and Steve from Vision Automotive have been stuck on 10.1 for a while now. As seen in the previous post they picked up another 20rwhp with our LSA lid spacer giving colder intake temps and more air to the rear cylinders 10.0 woohoo




    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.

  2. #42
    Join Date
    Feb 2014
    Posts
    4,285
    Quote Originally Posted by sdtash View Post
    I was keen on the spacer if it supported reduced boost pressure. I still find it difficult to comprehend if the 7 & 8 cylinder has inproved air flow, inlet air pressure does not reduce? .so cylinders 1 to 6 experience a reduction.
    Viewing the logs in detail there was a slight pressure drop starting from 3000 rpm & peaking at 0.39psi at peak HP.

    The effects of pressure drop with the 10mm spacer are dependant on the entire system (cam, cats, exh system etc). The test car has a standard cam therefor will have minimal pressure drop. Why? Simply due to minimal overlap. For example a larger cam would have more "overlap" (both int & exh valves of their seats at the same time), during over lap the pressure in the supercharger plenum is then pushed threw the cyl & out the exh port due to a direct flow path threw the intake port & out the exh port.

    "During the overlap phase" a 10mm lid spacer would have a greater chance of having pre/post pressure drop within the blowers plenum vs no lid spacer with a larger cam vs stock cam.

    However, the volume of air flow the supercharger can produce is well and truly beyond what any "single cyl" with an open intake valve can consume and or exit the exh port during overlap. You need to remember that not all 8 intake valves are open at a given time yet the blower is moving far more volume of air than any single cylinder can consume.

    If the engine had a larger cam with more overlap & no cats (for example), we would expect a larger pressure drop with the 10mm plates due to reasons explained above.

    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.

  3. #43
    Join Date
    Feb 2014
    Posts
    4,285
    As you guys know Steve and Brett from Vision automotive have been stuck on 10.1 ET at the track for quite a while now, it's hard to find more HP on these things when you've basically done everything you can.

    We found 20rwhp on NickGTS's car in Sydney and Vision Automotive in VIC also found 20rwhp (100% independent of us) and then they also backed up that HP gain at the track with a tenth quicker ET and more MPH in not only the 1/4 mile but also the 1/8th mile so it shows it has picked up HP from the starting line to finish line.

    I'm quite proud the product has been proven with 2 completely different workshops and at the track.

    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. #44
    Join Date
    Feb 2014
    Posts
    4,285
    LSA Lid Spacer Specials:

    We have had an overwhelming response to our LSA Lid Spacer special for last month of $600 AUD each. As such we have been able to buy more material in bulk and can now afford to hold the special pricing and not increase it.

    We have dyno tested the LSA Lid spacer we found 20RWHP and 1-1.5mph at the track without any tune adjustments.

    Vision Automotive 100% independent from us have found 20RWHP on their highly modified LSA GTS and also backed up this HP gain at the track after being stuck on a 10.1 for months and now being able to run a 10.0 in summer ambient conditions.

    Our plates are a high grade engineering composite material which have high heat rejection thermal reduction properties, so lower intake temps.
    Air flow into the highly restricted rear cylinders is improved.

    In addition to that since the intercooler brick is also spaced further away from the rotor V the air has more time to spread out wider and use more of the intercoolers brick surface for further cooling, along with less heat transfer into the intercooler brick from the plate blocking heat transfer.

    The plates require ZERO silicone and have custom 1 piece high heat resistant o-rings, the product is highly engineered and perfectly suited to the LSA blower.
    Last edited by GenF-GTS; 02-03-2017 at 03:27 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.

  5. #45
    Join Date
    Oct 2016
    Location
    Adelaide
    Posts
    66
    hey mate can I put this lid spacer on my stock lsa without any other modifications? Do I need to have the car tuned after install or is the stock tune fine.

    Cheers.

  6. #46
    Join Date
    Feb 2014
    Posts
    4,285
    Quote Originally Posted by ASD14 View Post
    hey mate can I put this lid spacer on my stock lsa without any other modifications? Do I need to have the car tuned after install or is the stock tune fine.

    Cheers.
    It will be completely fine this is specially what we tested for when we dyno tested it, if you could just bolt it on without any tune changes at all, and it worked great.

    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.







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