Jump to content


  • Content Count

  • Joined

  • Last visited

About Grantmac

  • Rank
    TT Bronze Member

Profile Information

  • Location
  1. Grantmac

    Front steering feels horrible

    The 606 is junk on anything but pavement. For mild trail riding about the least aggressive tire I'd consider would be an Mt-21, maybe a Shinko 244. Grant
  2. Grantmac

    Big Bore Carb Setup

    Air leak
  3. Grantmac

    low mpg

    sputtery+poor MPG=extremely rich. Even a very rich bike will ride pretty smoothly, it takes true power robbing richness to make it run rough. A properly jetted bike should feel damn near electric with the possible exception of heavy throttle application from near idle. That is an area which you have to make some compromises between what is going to work at low RPM and what will work at high RPM. There is never a good reason to compromise on steady-state jetting. With the price of fuel in the UK a new needle and main jet will pay for themselves pretty quickly. -Grant
  4. Grantmac

    UHD tubes, or Tubliss with new my tires?

    My PAC NW riding experience would point me towards an mt43 if you can stand the trials tire handling. I haven't run them tubliss, but they loved the lowest pressure I was willing to go with a HD tube. Grant
  5. Grantmac

    low mpg

    You are far, far to rich all over the place. You will need a leaner needle, smaller main jet and start from there. Something like an NCYR needle and 155 main would be a reasonable start. Grant
  6. Grantmac

    jetting for drz400 with big bore and mods

    You need a needle which is much leaner at low throttle such as an NCYR. The fringe benefit will be much better fuel mileage. Grant
  7. Grantmac

    need help choosing a gas tank that fits me

    I went from an 'E tank to the IMS 2.6, that is the tank the bike should have come with. Far easier to get weight on the front end, feels less top heavy, you can sight the remaining fuel. Worth they money and then some. Grant
  8. Grantmac

    A "unique" lithium battery option

    I put a battery tender brand LiFePO in mine at the beginning of the season. Cheap, works perfectly and bolts right in. Grant
  9. Grantmac

    Aftermarket Petcock

    There is a procedure to remove and if you do a search you will find it. Any leak in that system could be hard to detect. Gent
  10. Grantmac

    JD Jet kit or FCR 39?

    Most fcr mileage issues are related to needle selection. A lot of folks run it very rich at low throttle openings. I'm getting 50mpg in town running hard with a BBK. Grant
  11. Grantmac

    Aftermarket Petcock

    My first guess would be something amiss with the coast enrichment system if its still present. Grant
  12. Grantmac

    Ride Height and Tire Wear?

    Ditch the link for sure. Raise the forks and when you get tires focus on keeping the sizes on the smaller side (90/90 and 110/80). A second seat with little padding in the saddle area specifically for off road helps too. Any off road you do with dual sport tires is going to be mellow enough that flat footing isn't critical anyways. Grant
  13. Grantmac

    434cc big bore and 15/47 gearing

    The hot cams are biased more to low/mid range. A set of E cams is also quite nice. Grant
  14. Grantmac

    13 tooth front sprocket?

    It would be far better for the bike to go up to a 47-48 on the back. The 13 is really hard on the chain slider.
  15. Grantmac

    Ride Height and Tire Wear?

    If it was done with a lowering link your rear is now too soft for anyone but a 90# ballerina. I have a 30" inseam, the bike is fine stock for offroad. Grant