HEADS UP!!!

Site upgrade in progress... Core site functions are working, but some non-critical features/functions will be temporarily unavailable while we work to restore them over the next couple of weeks.

Please post any bugs you encounter, but before you do, check to see if it's already listed.

Thanks for your patience while we work to improve the community.

Sign in to follow this  
Followers 0
moach1

blew it up

43 posts in this topic

guess i had it pinned too long. it was making a noise, like something was loose. so i did check the valves and the clearance was fine. went for a 120 mile with a bunch of buddies and mile 77 it happened. i have never seen anything like it. i wasn't even wide open when it happened. thank god we had a chase truck.

Share this post


Link to post
Share on other sites

I'm gonna guess the rod broke, then pushed forward and up thru the counterbalance shaft. Thus pushing right up thru the seem in the case halves.

I wish you a speedy recover

Share this post


Link to post
Share on other sites

Hey moach,

Not to make fun of your unfortunate circumstances, but I know a guy who needs everything but the engine for his new WR :):)

Share this post


Link to post
Share on other sites

wr 450, o5. i am going to rebuild it. keep it for a few years and get a ktm, a real bike. i use to bleed blue, till this happened. my wife almost killed me!!! i told her how much money its going to take. i am glad i am not making payments!!!

Share this post


Link to post
Share on other sites
wr 450, o5. i am going to rebuild it. keep it for a few years and get a ktm, a real bike. i use to bleed blue, till this happened. my wife almost killed me!!! i told her how much money its going to take. i am glad i am not making payments!!!

Now, Now, :) Don't overeact. I just spoke with a guy in our shop who toasted the motor in his 525. Think what it's going to cost him to repair!! Find out what went wrong-Is it an '05-How many miles?

Share this post


Link to post
Share on other sites

Why does everything look dry and dusty in there? Was there sufficient oil in it?

Share this post


Link to post
Share on other sites

it has 553 miles. before any desert ride we do a basic checklist the night before and oil was fine, changed it at 350 miles. there has always been a noise coming from the head, but the valves where in tolerance. think i am just going to take it in and have a pro look at it. looks like too many rpms? should have seen all the crap leaking out. the bike threw up!!!

Share this post


Link to post
Share on other sites

Damn...05??????

Bribe the dealer, offer up your wife in trade for a warranty repair. That will make her happy!!!! (just kidding of course.) :)

Hope you get it fixed soon and at as little expense as necessary.

Share this post


Link to post
Share on other sites

Looks like a bad factory engine assembly. :) The rod must have broke at the wrist pin and punched front of the case. It does not take much to break these things at the rpms they generate! :p Sorry to see that a rebuild is in order. :)

Share this post


Link to post
Share on other sites

May we all bow our heads in a moment of Silence :) pray for the speedy recovery and I feel your pain sorry to hear and see your problems good luck with your adventure in repairs hope it is as cheap as possible.

Share this post


Link to post
Share on other sites

The thing that surprises me is that there is absolutely no oil visible in the pics. I would think such a catastrophic failure would have caused at least some amount of oil to escape the crankcase. The little bit of the interior looks to be bone dry. Are you sure you didn't have an oil pump failure? The ticking noise should have been a warning that something was up. Sorry for your loss. :)

Share this post


Link to post
Share on other sites

Man that hurts to look at.

You might want to search this forum for Yamaha warranty support. A few of the guys here got Yamaha to fix some starter related problems back in 2003. Maybe they might have some tips.

Hope you get it fixed soon.

Share this post


Link to post
Share on other sites
..The ticking noise should have been a warning that something was up...

Normally I'd agree, but on all the 426's and 450's I've ridden (including my own '04 WR450) there's so much mechanical noise it'd be damned hard to determine which ticking noises are legit vs. which ones are timebombs. This is my first 4 stroke and compared to a 2 stroke I was amazed at how much mechanical racket comes out of these engines. And after adding a full sized skidplate to the bottom the noise seems even more magnified / echoed back up towards the rider. Sounds like a friggin' rock tumbler on nitrous under me sometimes.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now
Sign in to follow this  
Followers 0