H Box, Stock Carbs, Stock Exhaust question
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  1. #1
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    H Box, Stock Carbs, Stock Exhaust question

    Hey all,

    New to the forums here but have been following and reading quite a bit. I just purchased a 79 Cx500 and am planning to turn it into a scrambler.

    I have read many posts and threads discussing changing from stock Airbox to pods with 90/120 main jets.

    I understand this configuration works if you are removing the h-box.





    My plan is to run:

    - stock carbs
    - stock exhaust
    - k&n RC-2340 pods
    - keep the h-box

    I know I have to re-jet, but can anyone tell me if I have to rejet with 90/120

    or

    are they different jets because I'm keeping the h-box?

    Thanks!

  2. #2
    Senior Member nolimitz's Avatar
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    Don't think you need to re-jet w your plan. Loose the h-box you need to re-jet
    83 GLI650 carport find

    1982 GL500i Daily rider
    1982 GL500 Father/Son winter project. The green hornet! Alive and well!

    Mike Nixon's carb book
    Larry Cargill's carb book
    Factory service Manual

  3. #3
    Super Moderator CXPHREAK's Avatar
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    I would suggest 82/115 with pods if keeping the H box.
    Rebuilding Handlebar Switches

    Rider 81 500C, Thingy Born a 78Z. Ozdeluxe born an 80 shadow.

    GET A MULTIMETER RTFM I am a CX500. If you maintain me I will run forever.

    http://cx500forum.com/mediawiki/index.php?title=Main_Page

    The WIKI link for all the good tech stuff. including free FSM's with addendums

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  5. #4
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    I have keihnin carbs and am shopping for a filter without the lip.

    In the atmospheric pods sticky, users are stating that this pod:

    Yamaha XS650 Air Filter - 54mm. XS performance Pod Air Filter - Mikuni BS34 CV - Mike's XS - New OEM & Vintage Parts Supply Warehouse

    does not have the obstructive rubber lip.


    The description states that it is supported by Mikuni carbs. My carb is keihnin and takes 54mm pods.

    Amyone run run this pod on keihnin's, or does anyone have know if this will work for me?

  6. #5
    Senior Member rscottp's Avatar
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    1981 CX 500 Deluxe
    1986 Yamaha Radian YX600
    Martha'a Vineyard, Ma

  7. #6
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    Great thanks!

  8. #7
    Senior Member
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    i stopped using the mike xs pods Due to them rusting from not being all stainless steel

    i have my own made for me that are 54mm and fit the kehins they are 45 shipped to you they ar ethe same ones i use in my mikuni kts pm me if you want some

    you have yo take care installing any of these on the kehins as clamp positioning is critical to get the filters to stay on

    speedmotoco also sells some pods that work

    cx500 vm34 ( also fits stock carbs) filter kit (2)

    and uni makes some as does k&n
    GET AN OIL FILTER ADAPTER

    Order The Quick Build Exhaust Pipes


    GET A QUICKSET VALVE TOOL


    Way to many bikes to maintain this list LOL !!

    email me at murray at murrayscarbs.com

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