My 03 WR450 is getting really loud

Mechanical problems discussed for Dirt Bikes and Dual Sport Bikes
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Bix Weir
Posts: 7
Joined: Thu Jun 07, 2012 7:55 pm

My 03 WR450 is getting really loud

Post by Bix Weir » Sat Jan 26, 2013 2:06 am

I bought this bike brand new.
I just rebuilt the engine with a 478 Big Bore as it was starting to get tired.
I went though the entire engine, new crank, all new bearings ect.
I have the YZ cam mod and a few other goodies.
But, after I got the engine rebuilt it seemed much louder.
It runs great but loud.
I have a full Yoshimura exhaust on there.
Any suggestions?

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Sandblaster
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Location: Eugene, OR
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Re: My 03 WR450 is getting really loud

Post by Sandblaster » Mon Jan 28, 2013 1:36 am

My guess is that the muffler needs to be re-packed.
Have you ever re-packed it?
If bikes are for kids I'll never grow up.

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foxx4Beaver
Posts: 82
Joined: Sun Jan 13, 2013 5:01 pm
Location: Plymouth,MA

Re: My 03 WR450 is getting really loud

Post by foxx4Beaver » Mon Jan 28, 2013 9:57 pm

just the fact that your pushin a brand new bigger bore now,will make it a touch louder....but as sandblaster mentioned,try re-packing the silencer....that should help.
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