Just Commodores Forum Community

It takes just a moment to join our fantastic community

Register

V6 Peformance Parts

Discussion in 'Mace Engineering' started by MACE, Mar 30, 2009.

  1. losh1971

    losh1971 Well-Known Member

    Messages:
    3,659
    Likes Received:
    733
    Trophy Points:
    113
    Joined:
    Jan 17, 2010
    Location:
    North Tas
    Members Ride:
    VR Ute V6
    Steve i may need lifters. Should I get roller lifters or are all the lifters on the Buick roller as stock?
     
  2. losh1971

    losh1971 Well-Known Member

    Messages:
    3,659
    Likes Received:
    733
    Trophy Points:
    113
    Joined:
    Jan 17, 2010
    Location:
    North Tas
    Members Ride:
    VR Ute V6
    Steve may I ask what brand the roller rockers are you sell, Crow?? I just see the grease has Crow on it and was hoping the rockers are too.
     
  3. MACE

    MACE Well-Known Member

    Messages:
    3,089
    Likes Received:
    46
    Trophy Points:
    48
    Joined:
    Mar 30, 2008
    The VN-VR V6 engines have roller lifters, which is awesome :)

    They are our own, which are based off factory LS1 rockers which we remanufacture.

    If you have any more questions please don't hesitate to ask.

    Kindest Regards,
    Steve
     
    losh1971 likes this.
  4. louie2006

    louie2006 New Member

    Messages:
    4
    Likes Received:
    0
    Trophy Points:
    1
    Joined:
    Jan 31, 2012
    Location:
    gosford
    Members Ride:
    2000 VX
    Hi Steve. I have a VX v6 and am wondering. Do vx's have a memcal that can be changed out, or is it a whole new ECU. I'm upgrading slowly at the moment and plan to do most by end of year. Also how hard is it to put in a cam stage1 and will I need to change my rockers and valve's etc, as I am planning to get the 1.98 roller rocker kit.
     
    Last edited: Jul 2, 2018
  5. EYY

    EYY Well-Known Member

    Messages:
    3,995
    Likes Received:
    562
    Trophy Points:
    113
    Joined:
    Mar 6, 2011
    Location:
    Vic
    Members Ride:
    VS Statesman
    VX NA v6 needs a flash tune. L67 uses a memcal based PCM I believe so the supercharged engine is a little different in terms of engine management.

    And you either change the cam or go for high ratio rockers, not both.
     
    MACE likes this.
  6. louie2006

    louie2006 New Member

    Messages:
    4
    Likes Received:
    0
    Trophy Points:
    1
    Joined:
    Jan 31, 2012
    Location:
    gosford
    Members Ride:
    2000 VX
    Thanks mate.
     
  7. MACE

    MACE Well-Known Member

    Messages:
    3,089
    Likes Received:
    46
    Trophy Points:
    48
    Joined:
    Mar 30, 2008
    louie2006, EYY, summed it up better than I could have :D

    If you have any more questions please don't hesitate to ask.

    Kindest Regards,
    Steve
     
  8. WICKED STATESMAN

    WICKED STATESMAN New Member

    Messages:
    3
    Likes Received:
    1
    Trophy Points:
    1
    Joined:
    Sep 3, 2018
    Location:
    Brisbane
    Members Ride:
    1997 holden vs statesman
     
  9. WICKED STATESMAN

    WICKED STATESMAN New Member

    Messages:
    3
    Likes Received:
    1
    Trophy Points:
    1
    Joined:
    Sep 3, 2018
    Location:
    Brisbane
    Members Ride:
    1997 holden vs statesman
    G'day mace just wondering how much horsepower I would gain from installing a larger maff sensor along with CAI? Looking forward to your response. Cheers. Jayden
     
  10. EYY

    EYY Well-Known Member

    Messages:
    3,995
    Likes Received:
    562
    Trophy Points:
    113
    Joined:
    Mar 6, 2011
    Location:
    Vic
    Members Ride:
    VS Statesman
    The MAF isn’t a restriction on a stock v6. The CAI will get you a few hp and some more induction noise and a little more responsiveness.
     
    commodore665, Pollushon and VS_Pete like this.
  11. Pollushon

    Pollushon Boost gives me a bar....

    Messages:
    2,068
    Likes Received:
    118
    Trophy Points:
    63
    Joined:
    Nov 9, 2012
    Location:
    Canberra
    Members Ride:
    VY SS
    What EYY said. I ran 18psi through a stock MAF and throttle body. No restriction to speak of.
     
  12. MACE

    MACE Well-Known Member

    Messages:
    3,089
    Likes Received:
    46
    Trophy Points:
    48
    Joined:
    Mar 30, 2008
    The MAF is a restriction on even a stock ecotec, however, addressing only this issue on a stock ecotec would not represent good value for money as a custom tune would be required. Generally, though, people upgrade the MAFs on these as they no longer have the capacity of registering higher flow rates, with more significant setups, such as boosted applications etc. Hope this helps.

    Cheers,
    Steve
     
  13. EYY

    EYY Well-Known Member

    Messages:
    3,995
    Likes Received:
    562
    Trophy Points:
    113
    Joined:
    Mar 6, 2011
    Location:
    Vic
    Members Ride:
    VS Statesman
    Personally, I don’t believe the MAF is even close to being a restriction on the little 6. My 304 was MAP based early on, then converted to sequential injection, which is a MAF based system.

    The 304’s use the same MAF as an ecotec v6. The MAF based system on the 304 gave more power than the MAP based system with no other engine mods.
     
  14. immortality

    immortality Moderator Staff Member

    Messages:
    12,926
    Likes Received:
    1,396
    Trophy Points:
    113
    Joined:
    Apr 15, 2006
    Location:
    Sth Auck, NZ
    Members Ride:
    HSV VS Senator, VX s2 Calais S/C
    That's probably got more to do with the tuning rather than the method of measuring the airflow me thinks, also the MAF based systems do away the MAT sensor so you're not relying on measuring the HOT air in the intake manifold and the sequencial injection will probably give a small increase as well.

    The MAF isn't a restriction in terms of the airflow it can measure, what I believe Steve is talking about is the fact that you have about 70mm intake duct but the internal diameter of the MAF is significantly smaller with the added bonus of having a lot of metal in the airflow and as such there is a pressure drop across the MAF. Is it significant? I can't say

    Also, I have maxed out the stock MAF on our L67 with a 3.4" pulley and various bolt on mods, once I get my hot air issue sorted me thinks a 3.2 or 3.0 pulley might me in future :)
     
    MACE likes this.
  15. MACE

    MACE Well-Known Member

    Messages:
    3,089
    Likes Received:
    46
    Trophy Points:
    48
    Joined:
    Mar 30, 2008
    That sums it up
     
  16. EYY

    EYY Well-Known Member

    Messages:
    3,995
    Likes Received:
    562
    Trophy Points:
    113
    Joined:
    Mar 6, 2011
    Location:
    Vic
    Members Ride:
    VS Statesman
    Would be interesting to know whether there is actually a pressure drop in a baby v6 - It'd really just depend on how much air the engine can ingest at high rpm at WOT - I understand we're talking purely about the physical size/flow characteristics here. I had the factory HSV 200kw tune with the MAP system and factory HSV 195i tune with the MAF. Stock v8 throttlebody is 65mm and I expect v6 would be the same?

    I suppose I'm just sceptical that there is power to be made on a stock v6 with a larger or removed maf. Would be interesting to see dyno figures before and after fitting a larger maf to a standard ecotec
     
  17. MACE

    MACE Well-Known Member

    Messages:
    3,089
    Likes Received:
    46
    Trophy Points:
    48
    Joined:
    Mar 30, 2008
    There would be gains to be had, much like upgrading to a ported throttle body on these engines, however, the exercise itself with what is currently available (custom tune) is cost prohibitive.

    On another note, many years ago, we were developing a module to allow running two standard air flow meters into a single MAF signal to be able to work with the stock PCM and tune. Admittedly this was to be able to run twin MAFs with our twin throttle manifold setup, but still recognised that the MAF is still a restriction nonetheless. Hopefully, we can work on something like this again given cheaper microprocessors exist not than what they did, 15 years ago. Not so much for ecotecs but for other vehicles moving forward
     
  18. losh1971

    losh1971 Well-Known Member

    Messages:
    3,659
    Likes Received:
    733
    Trophy Points:
    113
    Joined:
    Jan 17, 2010
    Location:
    North Tas
    Members Ride:
    VR Ute V6
    Steve, the Buick roller rockers, at what range will they give the said gains? Will they make any improvement from low to mid?
     
  19. MACE

    MACE Well-Known Member

    Messages:
    3,089
    Likes Received:
    46
    Trophy Points:
    48
    Joined:
    Mar 30, 2008
    Mainly mid to top end gains. In saying this though, there will be improvements in drivability and throttle response across the entire rev range.

    If you have any questions please don't hesitate to ask

    Kindest Regards,
    Steve
     
    losh1971 likes this.
  20. losh1971

    losh1971 Well-Known Member

    Messages:
    3,659
    Likes Received:
    733
    Trophy Points:
    113
    Joined:
    Jan 17, 2010
    Location:
    North Tas
    Members Ride:
    VR Ute V6
    Are you still expecting to have more stock this year, Steve?
     

Share This Page