Just Commodores Forum Community

It takes just a moment to join our fantastic community

Register

Homemade intake

Discussion in 'VE Holden Commodore (2006 - 2013)' started by monkeyboy, Aug 2, 2011.

  1. monkeyboy

    monkeyboy New Member

    Messages:
    119
    Likes Received:
    1
    Trophy Points:
    0
    Joined:
    May 23, 2005
    Members Ride:
    2010 VE SV6 SIDI
    I made this a few days ago and fitted the thing today. It aint pretty, but it gets rid of that silly plenum with all its convoluted chambers and noise suppressing twists and turns. Cost me about 50 bucks, including the heatproof paint.

    It's 90mm PVC rainwater pipe...completely airtight, the breather hose is connected and the thing sucks in air like crazy. It all fits like a glove and is as solid as a rock.

    I'm happy with it. And seeing as I spend my time in the car driving it rather than gazing like a schoolgirl at the engine bay, the faact that it is a bit lumpy doesn't bother me a bit. :)
     

    Attached Files:

  2. Critical Jim

    Critical Jim Member

    Messages:
    122
    Likes Received:
    0
    Trophy Points:
    16
    Joined:
    Mar 18, 2009
    Location:
    Adelaide Hill's
    Members Ride:
    VE Calais, VL SL
    Neat ,so Mcguyver drives a Holden.


    Nicely done.
     
  3. bogan_vk

    bogan_vk New Member

    Messages:
    728
    Likes Received:
    4
    Trophy Points:
    0
    Joined:
    Aug 10, 2009
    Location:
    australia
    Members Ride:
    commodore
    looks good ,ive also got pvc rainwater pipe as my intake pipe on the vk been using the same pipe for years with no problems.
     
  4. Lumps of cheese

    Lumps of cheese welcome to the machine

    Messages:
    2,770
    Likes Received:
    37
    Trophy Points:
    48
    Joined:
    Nov 19, 2005
    Location:
    Warrnambool
    Members Ride:
    83 vh sle, 4x4 hilux, 03 monaro, 07 nightrain
  5. walesy

    walesy Aint no family cruiser!!!

    Messages:
    2,254
    Likes Received:
    17
    Trophy Points:
    0
    Joined:
    Jun 10, 2005
    Location:
    Perth SOR
    Members Ride:
    Cherry Black WH II Caprice, VS exec wagon
    its always good to make something yourself, who cares if it isnt the best looking intake (still looks good IMO) i made one when i was younger that went down behind the front bar for a home made CAI
     
  6. HussySV6

    HussySV6 New Member

    Messages:
    368
    Likes Received:
    0
    Trophy Points:
    0
    Joined:
    May 16, 2011
    Location:
    Brisbane
    Members Ride:
    VW GOLF GTD
    Looks good champ. Did you change the filter aswell or left the stock one ?
     
  7. UFO

    UFO I Believe

    Messages:
    1,860
    Likes Received:
    18
    Trophy Points:
    38
    Joined:
    Oct 29, 2009
    Location:
    Canberra
    Members Ride:
    MY10 VE International Sportwagon SIDI 3L
    i reckon that looks better than some of the 'custom' crap i've seen for sale.... so well done :thumbsup:.

    and as long as it's functional, who really cares what it looks like anyway.

    i've always wondered however, why intake pipes arent wrapped in thermal tape like they do for extractors to keep the exhaust gas as hot as possible for as long as possible? same principle would apply for the intake... try and keep the air as cold as possible. insulating it from the high underbonnet temps could only benefit fuel economy and power gained, by keeping the air as cold (dense) as possible. as such, since you are doing your own mods, have you considered wrapping that sucker up? ok, its not going to look pretty.... but who cares, if what you are trying to achieve is meaningful modifications. alternatively, those rubber gromets could act as mounting points for some sort of heat shielding.... creating an air dam between the two surfaces (kind of like double glazed windows), so an outer skin over the top of your current piping could help even more to insulate the intake air.
     
  8. PRAVX II S

    PRAVX II S Member

    Messages:
    918
    Likes Received:
    5
    Trophy Points:
    18
    Joined:
    Jan 21, 2010
    Location:
    Australia
    Members Ride:
    Commodore
    hey mate looks good, but there is a reason why the factory duct have a ribed surface.
    better air/fuel burning in the combustion chamber.
     
  9. some_guy

    some_guy Donating Member

    Messages:
    418
    Likes Received:
    10
    Trophy Points:
    18
    Joined:
    Apr 19, 2009
    Location:
    brisvagus
    Members Ride:
    VR SII Exec.
    That Makes...... No Sense.
     
  10. Jesterarts

    Jesterarts Your freedom ends where mine begins

    Messages:
    3,817
    Likes Received:
    97
    Trophy Points:
    48
    Joined:
    Nov 22, 2005
    Location:
    Victoria
    Members Ride:
    2010 Nissan X-Trail ST-L
    Ribbed for the cars pleasure?

    Yes, there is a reason but no, it's not what you said.

    And having a non-ribbed pipe improves airflow as the ribbing that is factory has a negative effect of the airflow.
     
  11. PRAVX II S

    PRAVX II S Member

    Messages:
    918
    Likes Received:
    5
    Trophy Points:
    18
    Joined:
    Jan 21, 2010
    Location:
    Australia
    Members Ride:
    Commodore
    what makes no sense?
    You need turbulence thats why you see air ducts that are turbulent after the maf.
     
  12. Pickle'

    Pickle' Donating Member

    Messages:
    536
    Likes Received:
    6
    Trophy Points:
    18
    Joined:
    Apr 6, 2009
    Location:
    Sydney, NSW.
    Members Ride:
    VE Omega
    That looks neat as on the car, well done.
     
  13. wraith

    wraith Hand over the dog bikkies

    Messages:
    5,007
    Likes Received:
    102
    Trophy Points:
    63
    Joined:
    Sep 17, 2008
    Location:
    Demonicaland
    Members Ride:
    VX V6 Berlina. 2003 VW Passat
    Do you believe hiclones work? Same principle.... The reason a lot of companies use the ribbed pipe is for 2 reasons. 1 it helps with routing being flexible and 2 due to the turbulence caused by the ripples it actually helps to quieten down the intake noise.
     
  14. some_guy

    some_guy Donating Member

    Messages:
    418
    Likes Received:
    10
    Trophy Points:
    18
    Joined:
    Apr 19, 2009
    Location:
    brisvagus
    Members Ride:
    VR SII Exec.
    Now that. Makes more sense. Hence when a smoother piped CAI is installed = increased induction noise.
     
  15. General Xander

    General Xander Epic

    Messages:
    67
    Likes Received:
    1
    Trophy Points:
    0
    Joined:
    Apr 15, 2010
    Location:
    Bacchus Marsh VIC
    Members Ride:
    '96 VS Executive 3.8L
    as said above, the convoluting it to let the engine move under load with out pulling the pipe out thats why i used a stretchyer piece of silicone hose on one joint so the intake flex with the moters movement. with out it it just kept getting pulled apart. and those 'ducts' after the maf are to straiten out the air flow, to reduce turbulence. mine is very slightly less resposive since the 'ducts' were blown out by a particularly large gas backfire. the 'duct' actually punched a hole right through the front of my air box in that particular one lol. damn lpg
     
  16. Jesterarts

    Jesterarts Your freedom ends where mine begins

    Messages:
    3,817
    Likes Received:
    97
    Trophy Points:
    48
    Joined:
    Nov 22, 2005
    Location:
    Victoria
    Members Ride:
    2010 Nissan X-Trail ST-L
    lol...

    So apparently you know something more that that all those peolpe who do the GTS mafpipe upgrade and various other aftermarket part suppliers who set smooth pipes as upgrades.
     
  17. PRAVX II S

    PRAVX II S Member

    Messages:
    918
    Likes Received:
    5
    Trophy Points:
    18
    Joined:
    Jan 21, 2010
    Location:
    Australia
    Members Ride:
    Commodore
    Maybe you guys can go explain to the tafe teachers your theory.
    Done my trade and have been a tradesman for 10 years now.

    This theory is valid on N/A

    Ask your self this question why are golf balls not all smoothed they have all little holes all over them.
    A golf ball that will be smooth all over wont travel as far a as the turbulent ball.
    Thats all i have to say.
     
  18. some_guy

    some_guy Donating Member

    Messages:
    418
    Likes Received:
    10
    Trophy Points:
    18
    Joined:
    Apr 19, 2009
    Location:
    brisvagus
    Members Ride:
    VR SII Exec.
    Tell me then, Being in the industry myself, why a planes wings aren't ribbed.
     
  19. Jesterarts

    Jesterarts Your freedom ends where mine begins

    Messages:
    3,817
    Likes Received:
    97
    Trophy Points:
    48
    Joined:
    Nov 22, 2005
    Location:
    Victoria
    Members Ride:
    2010 Nissan X-Trail ST-L
    Hmmm... i was going to ask myself that question, but then remembered I'm not retarded and I successfully finished high school.

    My car doesn't play golf, nor an I intending on having it suck up gold balls.

    FYI, yes, gold balls have dimples to cause turbulance around them and therefore fly further but unfortunately the same theory cannot be applied to intakes.

    Completely different airflow principals apply.

    I think I've said this in the past, just because you have been doing something doesn't mean you're good at it.

    In the case of intakes, you want the pipes to be as smooth as possible to reduce turbulence.

    Either way, it has absolutely nothing to do with air/fuel in the combustion chamber.

    Turbulence is needed AFTER the fuel has been introduced and last I checked, fuel is not introduced into the intake pipe.

    As wraith said, the reason the factory pipe is ribbed is because flexible, because it quietens the intake and one addition form me is that it prevents engine vibration causing stresses on intake components unnecessarily .
     
    Last edited: Aug 3, 2011
  20. Jesterarts

    Jesterarts Your freedom ends where mine begins

    Messages:
    3,817
    Likes Received:
    97
    Trophy Points:
    48
    Joined:
    Nov 22, 2005
    Location:
    Victoria
    Members Ride:
    2010 Nissan X-Trail ST-L
    Planes don't get no satisfaction.
     

Share This Page