315R Montesa overheating

Discussion in 'Trials' started by More CowBell, Dec 3, 2012.

  1. More CowBell

    More CowBell gotahave moreCowbell

    Joined:
    Jul 7, 2009
    Oddometer:
    208
    Location:
    Sun City Ca.
    My buddy has a 98 Montesa 315R. It boils over after not too long of riding. Has anyone seen this before? Do you think it could just be a radiator cap ? It's not like I can just run down to the corner and get one . Im open to sugestions. Once we fix this issue I think he is going to sell it.
    #1
  2. mung

    mung Been here awhile

    Joined:
    Apr 18, 2008
    Oddometer:
    626
    Location:
    Idaho
    Is the coolant topped up? Does the fan come on? Are the rad fins clear? Good gas? Plug tight? Reasonable jetting? Air leak around carb? Crank seals? Just a few ideas.
    #2
  3. Todd Miller

    Todd Miller Adventurer

    Joined:
    Nov 6, 2011
    Oddometer:
    10
    I had a 02 model and had the same problem. I ordered a new rad. cap and put blue ice antifreeze in it and all was good again. Never an overheating issue again. I can tell you however that you are not going to find t he cap at your local auto parts dealer will have to order it from a local honda dealer or Overland Trails in PA the guy there is Dennis. He is the man when it comes to Montesa's. Hope this helps
    #3
  4. jonnyc21

    jonnyc21 Trials Ninja

    Joined:
    Feb 8, 2011
    Oddometer:
    1,211
    Location:
    Boise aria
    As I understand it http://www.lewisportusa.com in CA might be able to get you what you need, they do Montesa parts, not sure about a 315R, but might be worth giving them a call.

    Good luck!
    #4
  5. Brewtus

    Brewtus Buffoonery, Inc.

    Joined:
    Jul 30, 2008
    Oddometer:
    3,228
    Location:
    Albuquerque, New Mexico
    Dennis at Overland Cycle is your guy. Trust me. :thumb
    #5
  6. NMTrailboss

    NMTrailboss Team Dead End

    Joined:
    Mar 1, 2008
    Oddometer:
    6,541
    Location:
    Albuquerque, NM
    #6