1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Project SR250 scrambler

Discussion in 'Your 250cc Projects' started by Canada_Dry, Aug 22, 2020.

  1. Canada_Dry

    Canada_Dry Member Premium Member

    Messages:
    27
    Likes Received:
    10
    Trophy Points:
    13
    Joined:
    Jul 8, 2020
    Gender:
    Male
    Location:
    Geelong, Victoria AU
    My Bike:
    83 GSX250
    Hey guys. I picked this up yesterday after finishing my Suzuki flip.

    first impressions:

    I paid way too much
    this bike is so small!
    Stupid Covid made it so I couldn’t see in person before buying

    excited for the challenge!


    New battery installed. I turn the key over and can measure 12v going through the ignition but I get no lights and basically nothing works.

    I put 12v to starter and it does turn over

    Any tips?



    D7F11DE5-3917-45CF-9AD0-E4410FA9E1D8.jpeg CCC8E3CD-1728-4C37-86E4-2E78514558EA.jpeg 1D5C05BD-4D2D-4F9F-8BA3-79F9C61816A3.jpeg
     
  2. Canada_Dry

    Canada_Dry Member Premium Member

    Messages:
    27
    Likes Received:
    10
    Trophy Points:
    13
    Joined:
    Jul 8, 2020
    Gender:
    Male
    Location:
    Geelong, Victoria AU
    My Bike:
    83 GSX250
    Elec tray and battery mount done. Do you think it will be roadworthy?

    3763AD0D-A6FE-4218-8AF9-5424AAEB3B95.jpeg C5D0A7CC-6FCC-47B5-8088-B91EA2D22686.jpeg 5014CACF-9B14-46B0-B97F-461279664B0B.jpeg 5E956501-998E-4554-8FD5-0D26419D6197.jpeg
     
  3. Andych

    Andych Senior Member Premium Member

    Messages:
    3,205
    Likes Received:
    1,732
    Trophy Points:
    898
    Joined:
    Oct 6, 2016
    Gender:
    Male
    Location:
    Sydney
    My Bike:
    1987 Yamaha SRX250, Honda 1975 CB400F, Honda 1991 250 Spada, Honda CT110 1986 Postie Bike
    Why not do what most people do when they are going in this direction.... get a high capacity antigravity battery and put it in the same tray as the electrics. Far neater and much safer... that battery position most likely wont pass roadworthy inspection and is prone to damage.
     
    • Agree Agree x 2
  4. Canada_Dry

    Canada_Dry Member Premium Member

    Messages:
    27
    Likes Received:
    10
    Trophy Points:
    13
    Joined:
    Jul 8, 2020
    Gender:
    Male
    Location:
    Geelong, Victoria AU
    My Bike:
    83 GSX250
    Hi Andy, yes it’s looking more and more that direction as I just got a rear brake assembly and it’s in the way again. Got the bike running but it idles like crap after carb rebuild and air/fuel adjustments. I think it needs bigger jets with exhaust/intake.
     

    Attached Files:

  5. Andych

    Andych Senior Member Premium Member

    Messages:
    3,205
    Likes Received:
    1,732
    Trophy Points:
    898
    Joined:
    Oct 6, 2016
    Gender:
    Male
    Location:
    Sydney
    My Bike:
    1987 Yamaha SRX250, Honda 1975 CB400F, Honda 1991 250 Spada, Honda CT110 1986 Postie Bike
    Good possibility it doesnt need bigger jets. You really need to look at your plugs (colour) and do some investigation... the assumption that you need to go larger is often wrong.
    It could be your intake air velocity it not high enough to get the required fuel, could also be the increased airflow into each carby has too much fuel going through... lots of different permutations and just going up in jet size will most likely have you forever chasing your tail in trying to tune it up.
    Pods on a bike are generally EVIL...
     
    • Agree Agree x 1
  6. Linkin

    Linkin The Apprentice Premium Member Dirty Wheel Club Contributing Member

    Messages:
    4,158
    Likes Received:
    2,438
    Trophy Points:
    943
    Joined:
    Mar 18, 2014
    Location:
    Sydney NSW
    My Bike:
    MT09SP, GSXR250R GJ73A
    With carbs, inreased airflow also means increased fuel. Good call on on the velocity, too. I was working on an RS125 with a HUGE carb and massive jets and it barely ran... solution from the head mechanic at my old job = larger jets...
     

Share This Page