315R Montesa overheating

More CowBell · 12-03-2012, 11:43 AM

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.

mung · 12-03-2012, 11:49 AM

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.

Todd Miller · 12-05-2012, 11:07 AM

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

jonnyc21 · 12-05-2012, 02:32 PM

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!

brewtus · 12-06-2012, 10:45 AM

Dennis at Overland Cycle is your guy. Trust me.

NMTrailboss · 12-06-2012, 12:02 PM

Quote:

Originally Posted by brewtus

Dennis at Overland Cycle is your guy. Trust me.

Dennis be the man on Montesas! http://www.overlandtrail.biz/

12-03-2012, 11:43 AM	#1
More CowBell ^OP gotahave moreCowbell Joined: Jul 2009 Location: Sun City Ca. Oddometer: 217	315R Montesa overheating 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. __________________ 13 KTM 350EXC, uncorked, race bike with a plate 08 Yamaha WR250R, adventure/Commuter 05 Montesa 4RT, everyone should have a trials bike

12-05-2012, 11:07 AM	#3
Todd Miller Adventurer Joined: Nov 2011 Oddometer: 10	Montesa 315 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

12-05-2012, 02:32 PM	#4
jonnyc21 n00b sums it up. Joined: Feb 2011 Location: Seattle aria Oddometer: 244	parts... 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!

12-06-2012, 10:45 AM	#5
brewtus Buffoonery, Inc. Joined: Jul 2008 Location: Albuquerque, NM. Oddometer: 2,312	Dennis at Overland Cycle is your guy. Trust me. __________________ Work hard. Play hard. Team Dead End. The drinking team with a Trials problem. 2-Time winner of the coveted "Best Shenanigans" award at Capt. Rick's annual BBQ.

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12-03-2012, 11:49 AM	#2
mung Gnarly Adventurer Joined: Apr 2008 Location: Idaho Oddometer: 404	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.