Help with de-pairing

Discussion in '6th Generation 2002-2013' started by SJC, Dec 20, 2009.

  1. SJC

    SJC New Member

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    On the holidays I'm going to do the o2 sensors and I'm going to also do the de-pairing mod at the same time. But the problem is I can't find any "how to" on the pairing valves, so what do I need to do.:confused:
     
  2. dogman

    dogman New Member

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    There are several ways you can do it,
    (1) just put a marble in the hose from the airbox to the solenoid and unplug the solenoid
    (2) Remove the solenoid and hoses altogether and block of the pipes on the pair valves.
    (3) As in 2 and also remove the pair valves and fit blockoff plates.
    If you want I can show you.
    You will need to increase the idle speed after, it usually drops about 300RPM
     
  3. MrJoelieC

    MrJoelieC New Member

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  4. stoshmonster

    stoshmonster New Member

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    Removing the "pair system" is actually relatively easy to do SJC. I currently have the gas tank,rear subframe,and fairings off my bike so performing the mod was super simple.You can either make the block-off plates yourself or TPO Parts makes a pair mod kit for the 6th gen. VFR800. This is what you get in the TPO Parts kit. Basically just the block-off plates,screws and some plastic caps.
    [​IMG]

    Here's what the "pair system" looks like on the bike. Remember the gas tank and rubber flap that covers the rear valve cover have been removed in these pics. The Red arrow points to the pair solenoid assembly,the green arrow points to the electrical connector for the pair solenoid,and the yellow arrow points to the cap on the rear valve cover that houses the reed valves and screens. There's another cap just like it on the front valve cover.
    [​IMG]

    Back the little pinch clamp off on the hose leading to the aluminum cap on the rear valve cover,and pull the rubber hose off the cap. Remove the two bolts securing the cap. Flip the cap over and this is what you'll see. The Red arrows point to the reed valves,and the green arrows point to the screens.
    [​IMG]

    If the reed valves didn't come off with the little cap simply pry them off with a small pick. Remove the screens and set them aside along with the cap and reed valves. You won't be reinstalling them. Clean any oil or dirt from around the top of the valve cover where the screens were installed. This is what you should see.
    [​IMG]

    If you're using the TPO Parts kit notice that the block-off plates have an irregular shape,so make sure that when you install them on the valve cover they are oriented correctly to seal the hole in the valve cover properly.
    [​IMG]

    Put a little bit of RTV Silicone sealant on the back of the block-off plate before you install it. Here's what the block-off plate looks like when it's installed. Now perform this same procedure on the front cylinder valve cover.
    [​IMG]

    There's a little tab in the electrical connector for the pair solenoid,gently pry it upward and unplug the connector. Tape up the open end of the electrical connector on the wire harness so no dirt or moisture can get into the connector. Back the pinch clamp off on the hose leading from the pair solenoid to the left rear side of the airbox and pull the hose off the airbox. The pair solenoid is mounted with a rubber grommet on a plastic tab that's part of the airbox. Pull gently rearward on the pair solenoid and it'll come off that plastic tab. Remove the pair solenoid and rubber hoses. In this pic you can see the port to the airbox where the rubber hose was and the plastic tab that the pair solenoid was mounted on.
    [​IMG]

    Now you have to cap off that open port at the rear of the air box. The port is below the air filter and it absolutely MUST be capped off so no dirt or crud can get into the airbox.
    [​IMG]

    That's all there is to the pair mod,sounds like a lot but it really isn't. You'll need to bump up your idle speed a bit when you're done.
    This is what you should have left when you're done. It's about a pound or two of crap that you can either throw on your parts shelf or in the trash,whichever you prefer. Hope this helps you.
    [​IMG]
     
  5. Elkwood

    Elkwood New Member

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    Thanks for the post stosh!! That looks like something i will have to do in the near future
     
  6. Alzazor

    Alzazor New Member

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    How much was the kit Stoshmonster ?
     
  7. stoshmonster

    stoshmonster New Member

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    The TPO Parts pair mod kit costs $19.99 Alzazor.
     
  8. SJC

    SJC New Member

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    Thanks stoshmonster, great write up. How do I get in contact with TPO? Do they have a web site or something.
     
  9. CandyRedRC46

    CandyRedRC46 Member

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  10. stoshmonster

    stoshmonster New Member

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    SJC,here's the link to TPO Parts home website. > TPO Parts

    The listed price for the pair mod kit on TPO Parts home website is $19.99.
     
  11. SJC

    SJC New Member

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    Thanks guys, thinking off doing the quick fix like dogman has said and then if it goes well I'll get the plates.
     
  12. VIFFER RIDER

    VIFFER RIDER New Member

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    Thats a pretty cool writeup Stosh, good job! I have to do that to mine too. Is there any use for that round can looking thing next to the oil filter, i think its a carbon canister of some type, i want to remove most if not all of my junky clutter that doesn't really need to be there to run.
     
  13. CandyRedRC46

    CandyRedRC46 Member

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    yeah thats the evap canister.
    the only real reason its there is to secure the fairing... lol
    no its emissions equipment, but you can ditch it.
    i ditched mine a while ago. its kinda heavy, adds to clutter, and makes oil changes more difficult than they need to be.
    just be sure to get the lines coming out of the gas tank right. one you can cap off and the other you need to leave on as a vent.
    if you do it wrong your gas tank will build a lot of pressure.
     
  14. steven113

    steven113 New Member

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    Nice write up! This project is definetly on my list while I have the bike apart replacing the wireing harness. Thanks Stosh!
     
  15. pap11y

    pap11y New Member

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    What is the benefit of the pairing valve please.

    The above instructions are awesome. Now I need to determine if there is benefit for me..
     
  16. steven113

    steven113 New Member

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    There is no real performance benifit by doing this mod. However it does eliminate alot of unneeded clutter in your engine bay and drops a few pounds off the bike. I removed the system mainly to stop the bike from making popping noises durring deceleration due to the pair valves sticking.
     
  17. CandyRedRC46

    CandyRedRC46 Member

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    disconnecting, or atleast plugging up, the pair valves is necessary if you do any dyno tuning to the bike.
     
  18. 02 VFR Rider

    02 VFR Rider New Member

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    I would say the benifit is better throttle response
     
  19. CandyRedRC46

    CandyRedRC46 Member

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    if you're still running o2 sensors id say so.
    but, if youve got o2 eliminators, id say the performance wouldnt change.
     
  20. Comicus

    Comicus New Member

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    I'm running the o2 eliminators and I noticed better throttle responce and smoother vtech transition. Who knows maybe it's all in my head.
     
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