Valve cover - corroded body of the bolt

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Valve cover - corroded body of the bolt

Post  patR1 on Sat Jul 09, 2016 3:56 pm

Hi Team,

I bought my xr650r over 2 years ago, recently i decided to take the valve cover off and clutch basket to get a better look of its health...

Anyway when i took of the valve cover one of the long bolts right hand side (exhaust end) was pretty rusty / eaten up .... it was only one bolt of the many that holds the valve cover... I also had a similar looking bolt at the clutch cover ...

Just wondering what would cause this corrosion when the bolt is nicely sealed inside the head...? all other bolts look good.

Thanks


Pat
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patR1
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Joined : 2016-07-09

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Location : sydney
XR650R Year : 2000

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Re: Valve cover - corroded body of the bolt

Post  BuRP on Mon Jul 11, 2016 10:48 am

Corrosion is water, you go swimming often with your bike?
Clean or renew bolt, then reassemble with some anti seize copper compound.
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BuRP
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Re: Valve cover - corroded body of the bolt

Post  SkidMark on Tue Jul 12, 2016 11:06 pm

and be careful tightening the long bolts on the covers - use a torque wrench as they snap easily.
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