CAN-AM (BRP) Discussions about CAN-AM ATVs.

Bad things happen when valves break

Thread Tools
 
Search this Thread
 
  #11  
Old 07-24-2005, 07:36 PM
crazypainter's Avatar
Pro Rider
Thread Starter
Join Date: Oct 2003
Posts: 1,074
Likes: 0
Received 0 Likes on 0 Posts
Default Bad things happen when valves break

I think they were Woods oversize valves, I don't know for sure cause they were in the bike when I bought it. One of the intakes let go, its in 3 pieces now. It looks like the stem broke just below the keeper, went down into the piston which knocked the head off, mashed it around the combustion chamber a few times putting a big gouge from the stem stub next to the inner spark plug hole. A lot of debris messing up the other valves. I don't think the head can be salvaged[img]i/expressions/face-icon-small-sad.gif[/img]
 
  #12  
Old 07-24-2005, 07:48 PM
OregonDunePatrol's Avatar
Pro Rider
Join Date: Feb 2004
Posts: 2,247
Likes: 0
Received 0 Likes on 0 Posts
Default Bad things happen when valves break

Well thats not good. I was gonna say, if the head is ok, its simply a matter of valves. Can you get any pictures of the head so we can take a look at the inside?
 
  #13  
Old 07-24-2005, 08:08 PM
crazypainter's Avatar
Pro Rider
Thread Starter
Join Date: Oct 2003
Posts: 1,074
Likes: 0
Received 0 Likes on 0 Posts
Default Bad things happen when valves break

I'll try, but I can tell you now it aint pretty.
 
  #14  
Old 07-24-2005, 08:31 PM
DuneMe's Avatar
Extreme Pro Rider
Join Date: Jul 2002
Posts: 3,566
Likes: 0
Received 0 Likes on 0 Posts
Default Bad things happen when valves break

[img]i/expressions/face-icon-small-frown.gif[/img]

I think I'm gonna be sick. . .

Hearing this kind of stuff is almost as bad as seeing a compound fractured bone. . .
 
  #15  
Old 07-24-2005, 08:36 PM
OregonDunePatrol's Avatar
Pro Rider
Join Date: Feb 2004
Posts: 2,247
Likes: 0
Received 0 Likes on 0 Posts
Default Bad things happen when valves break

Originally posted by: crazypainter
I'll try, but I can tell you now it aint pretty.

Crazy,

Thats fine, I want to help if I can. You've got my email address - send me the pics and I'll show it to my guys and see what we can come up with.

Marky
 
  #16  
Old 07-24-2005, 09:31 PM
Hightower's Avatar
Extreme Pro Rider
Join Date: Feb 2002
Posts: 3,859
Likes: 0
Received 0 Likes on 0 Posts
Default Bad things happen when valves break

surely the head divits can be filled with weld and machined, and the plug hole retapped. if not then that really sucks bad. I feel your pain man.
 
  #17  
Old 07-24-2005, 09:36 PM
JEFFROE's Avatar
Pro Rider
Join Date: Oct 2002
Posts: 1,101
Likes: 0
Received 0 Likes on 0 Posts
Default Bad things happen when valves break

crazy ain't it[img]i/expressions/face-icon-small-sad.gif[/img] thats what took my 760 down had the wrong valve springs in the head and to the cams were to big, the valve would slap hard under the load or high rpm's and the weakest leak would snap!! thats why i have a 730 now instead of a 760 (all i could salvage was the crank and rod from the pami 760) how does it go again? want to go fast ? how much money do you have[img]i/expressions/face-icon-small-wink.gif[/img] get er' done by the end of october were coming back down to little sahara oklahoma.
 
  #18  
Old 07-24-2005, 11:20 PM
H's Avatar
H
H is offline
Pro Rider
Join Date: Sep 2004
Posts: 208
Likes: 0
Received 0 Likes on 0 Posts
Default Bad things happen when valves break

I hate hearing that, just when you get her dialed in too[img]i/expressions/face-icon-small-sad.gif[/img] If your's isn't fixed by sandfest maybe you'd like to take mine. I know its not as fast but it does something yours doesn't--- run. Good luck getting her running soon if you need anything just ask, I won't give it to you but you can still ask[img]i/expressions/face-icon-small-wink.gif[/img]
 
  #19  
Old 07-24-2005, 11:47 PM
crazypainter's Avatar
Pro Rider
Thread Starter
Join Date: Oct 2003
Posts: 1,074
Likes: 0
Received 0 Likes on 0 Posts
Default Bad things happen when valves break

Put pics of the piston and head on my page. should be up soon
 
  #20  
Old 07-24-2005, 11:58 PM
omahapredator's Avatar
Pro Rider
Join Date: Mar 2004
Posts: 558
Likes: 0
Received 0 Likes on 0 Posts
Default Bad things happen when valves break

that sucks crazy...but i knew that's what it was as soon as we lifted the front tires and heard that rattle....that's why i'm going back to a stock bore cylinder and sticking with stock cams and have a REV LIMITER..lolol....you'll have her fixed before you know it.
 


Quick Reply: Bad things happen when valves break



All times are GMT -5. The time now is 10:19 PM.