Jet kit for VFR 750 1986

Discussion in '1st & 2nd Generation 1983-1989' started by Deckard84, Sep 9, 2020.

  1. Deckard84

    Deckard84 New Member

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    Does anyone know if this jet kit is worth installing: https://www.mxpositivo.com/en/jet-kit-honda-vfr-750-1986-1987-dynojet-e1124.html
    ? I am new to all this but we are currently practicing our carb skills on an old Bol'dor that we bought replacement carbs for. My bike doesn't have any other performance mods, but was going to add a K&N filter at some point, not even sure if that makes any difference.
     
  2. sixdog

    sixdog New Member

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    If your bike is stock, keep it stock in my opinion and experience......
     
  3. Captain 80s

    Captain 80s Member

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    Just get #40 pilot jets. Even a stock VFR likes that, and then is ready for a "high flow" filter and perhaps some slip-ons.

    I don't buy K&N for any kind of performance fantasy, just so I can service them myself. And I have multiple bikes to ride while the element is air-drying after cleaning.
     
  4. sixdog

    sixdog New Member

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    There you go .... Well explained


    Sent from my iPhone using Tapatalk
     
  5. squirrelman

    squirrelman Member

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    jet kit won't do much for your bike........wisdom from years back. also, u don't wanna be repeatedly pulling carbs off to play with jets and needle washers, not on that bike !
     
  6. Dannoxyz

    Dannoxyz New Member

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    K&N filter is not going to improve flow much to point where changing jets is needed. You’d need to do more extensive mods such as:

    - full-exhaust upgrade
    - big-bore, high-compression pistons
    - larger back-cut valves on fully-radiused seats
    - head ported
    - high-lift long-duration cams with adjustable gears

    Worthwhile upgrades with biggest gains start on inside of engine.
     
  7. Deckard84

    Deckard84 New Member

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    Thanks for all the replies. Guess I will stay away from the jet upgrade then. Where do i get #40 pilot jets?
    Is removing the carburetor really that difficult on this model? I wanted to clean them out at some point (or take them out and have them cleaned professionally), due to the bike sitting still for 8 years. Although it actually seems to run fine after having driven 500 kms and added two different "fuel/carb cleaners" to the tank (but I don't have that much too compare with).

    I was thinking of making this guy an offer on a 4-2-1 exahust: https://www.ebay.com/itm/133467229849?ul_noapp=true
    but not sure if it will improve sound and/or improve performance at all. What do you think?

    My plan is also to take the bike and have it dyno tested and the carbs synced at some point next season.
    Not planing on doing expensive engine upgrades.
     
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