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 header pipe loose, making a valve like clatter

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MotoJezek
Carlotto
Carlotto
MotoJezek


Posts : 41
Join date : 2017-10-12

header pipe loose, making a valve like clatter Empty
PostSubject: header pipe loose, making a valve like clatter   header pipe loose, making a valve like clatter Icon_minitime1Thu May 30, 2019 4:47 am

My GRiSO had a noise from the left head when cold that sounded like loose valve clearance , but disappeared late in the day when it was warmer. Tracked it down to a loose header pipe. Seems the factory "lock' washers do a poor job of it, and loosened again @100 miles or so. I used some stainless 5/16 split lock washers and replaced all 4 on both sides. Torqued again to 18 ft lbs. 25Nm. Seems to have taken care of it.
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Bill Hagan
GRiSO Capo
GRiSO Capo
Bill Hagan


Posts : 1626
Join date : 2014-07-03

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PostSubject: Re: header pipe loose, making a valve like clatter   header pipe loose, making a valve like clatter Icon_minitime1Thu May 30, 2019 4:52 am


A classic issue. Glad you tracked it down.

I was in a panic when that first occurred on my Ballabio.

Since, have done PM to keep from happening.

Bill
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beetle
GRiSO Capo
GRiSO Capo
beetle


Posts : 9475
Join date : 2013-09-30

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PostSubject: Re: header pipe loose, making a valve like clatter   header pipe loose, making a valve like clatter Icon_minitime1Thu May 30, 2019 5:01 am


I've had this happen, often. It never occurred to me to use spring washers until Ron (waterbottle) mentioned it. Not a sausage, since.



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eeyore
Grignapoco
Grignapoco
eeyore


Posts : 180
Join date : 2016-09-09

header pipe loose, making a valve like clatter Empty
PostSubject: Re: header pipe loose, making a valve like clatter   header pipe loose, making a valve like clatter Icon_minitime1Thu May 30, 2019 7:48 am

Remove, copper grease and re-torque every service.
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