Valve clearances

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eamonn
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Joined: Fri Nov 30, 2012 11:50 am
Location: Acton and Colchester

Valve clearances

Post by eamonn »

Hello, just checked valve clearances on rear cylinder , Exhaust 11”. and 12” . Inlet 5” and 6”, So fairly close to spec, is it worth checking the front cylinder ? Bike has done 32000, as far as I know this is the first check. Its cold in the garage and the beer is calling me . Happy christmas everyone , 🍺🍺🍺
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KermitLeFrog
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Location: Hexham

Re: Valve clearances

Post by KermitLeFrog »

Interesting that they don't give a tolerance in the manual, or have I missed it?
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tony.mon
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Re: Valve clearances

Post by tony.mon »

You mean Haynes?
See 1.2 specifications.

Inlet 0.13 to 0.19
Exhaust 0.28 to 0.34

Metric.
Eamon, are you measuring in thou?
It's not falling off, it's an upgrade opportunity.
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E.Marquez
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Re: Valve clearances

Post by E.Marquez »

KermitLeFrog wrote: Mon Dec 24, 2018 5:53 pm Interesting that they don't give a tolerance in the manual, or have I missed it?
Page 1-7 in the factory manual
valve clearence .jpg

The 1st number you see is the "specification" the perfect clearance, the next numbers are the range allowed.
In that chart 1st set of numbers is metric 2nd set ( SAE) )
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eamonn
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Joined: Fri Nov 30, 2012 11:50 am
Location: Acton and Colchester

Re: Valve clearances

Post by eamonn »

Yeah , exhaust 12 thou and inlet 6 thou, when I was an apprentice that was normal . After 30, 000 miles I was surprised they were so close to spec .
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KermitLeFrog
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Re: Valve clearances

Post by KermitLeFrog »

E.Marquez wrote: Mon Dec 24, 2018 7:34 pm
KermitLeFrog wrote: Mon Dec 24, 2018 5:53 pm Interesting that they don't give a tolerance in the manual, or have I missed it?
Page 1-7 in the factory manual
valve clearence .jpg


The 1st number you see is the "specification" the perfect clearance, the next numbers are the range allowed.
In that chart 1st set of numbers is metric 2nd set ( SAE) )
My manual

Image
"I spent a lot of money on booze, birds and fast cars. The rest I squandered" (George Best, RIP)
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E.Marquez
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Re: Valve clearances

Post by E.Marquez »

KermitLeFrog wrote: Mon Dec 24, 2018 10:16 pm
My manual

Image
Is that a factory manual or an after market?

I have three different factory manuals all are the same with the spec and tolerance :confused
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