Ridemalibu Motorcycle Rentals & Tours – Los Angeles CA
  1. Ciao Guest - You’ve landed at the ultimate Guzzi site. In SoCal? See the SERVICE tab above for the best in service, tires, tuning and installation of our products or custom work. NEW FORUM REGISTRATIONS REQUIRE EMAIL ACTIVATION - CHECK YOUR SPAM FOLDER. ALWAYS TRY A SEARCH BEFORE STARTING A NEW TOPIC - Most questions you may have are already answered on the Forum with FACTS, NOT OPINIONS. PLEASE DON'T BE A DRIVE-BY POSTER: As a common courtesy, check back if you are posting elsewhere on the web. Note there's decades of Guzzi hands-on experienced help on this site, all whom give endless amounts of their time for free; BE COURTEOUS AND RESPECTFUL! There is zero tolerance on personal attacks and off-site links to other Forums or competing products. Also be sure to click on the STORE link also above for our 600+ product inventory, including many of our 100% Made-in-house-USA GTM products and engine kits. We appreciate the consideration, understanding and your business... past and future. And if you haven't seen our MotoCycle (not) art, click on the BUILDS tab above to see our work at our sister business; GT MotoCycles®-- WE ARE ONLINE ONLY - NO PHONE CALLS MADE OR RECEIVED.

fine tuning carbs on a restored V75

Discussion in 'Small Block' started by redwitch, Nov 22, 2017.

  1. redwitch

    redwitch Tuned and Synch'ed

    Joined:
    Oct 9, 2015
    Messages:
    36
    Likes Received:
    4
    Location:
    france
    Hi everybody. a french guzzi man, I just restored a V75, had to change the exausts, (too rusted) for short "megaton" pipes, with sound killer. also put KN filters. I look for carb settings for this combination, if someone allready tried it.
    I feel the mix is too lean, and i plan to put 10 points more on main jets, but I don't know about idle jets? Any suggestions would be greatly appreciated
    good rides to all. regards. Hervé Gouinguenet.
     
  2. jr1967

    jr1967 Cruisin' Guzzisti

    Joined:
    Oct 29, 2008
    Messages:
    183
    Likes Received:
    36
    I don't know about your specific bike. But generally for the idle jets, if the air or fuel screw adjustment is more or less the same amount of turns as the stock bike settings from the manual(like 1-3/4 turns out), you should be good.
    The main jet is ONLY used during 3/4 to full throttle.
    Anything between 1/4 - 3/4 throttle is a combination of idle and needle/emulsion tube.
    And then there is the throttle slide cut off to play with if you're bike has a stumble in pick up, which is very possible with K&N's.
    Easiest way to ensure that you are not running lean and damage your bike is to go for a quick dyno run and an get advice on how to re-jet your bike.
    Experimenting with jets and do spark plug color interpretation is time consuming and often very inaccurate with the types of fuel available today.
     

Share This Page