 Valve clearance ?
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Joined: Jan 2005
Posts: 592
Adjunct
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OP
Adjunct
Joined: Jan 2005
Posts: 592 |
I have just got around to checking my valves (20000 + miles)today. Exhaust side .28,.29,.25,.28 Intake side .21,.23,.23,.21 Ok all you valve guru's should I have them adjusted or not. Thanks.
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Re: Valve clearance ?
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Joined: Jan 2005
Posts: 4,074 Likes: 83
Loquacious
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Loquacious
Joined: Jan 2005
Posts: 4,074 Likes: 83 |
Check out FJ's write up about it in the Tech Vault lots of good info including specs and procedures.
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Re: Valve clearance ?
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Joined: Jan 2005
Posts: 1,335
Learned Hand
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Learned Hand
Joined: Jan 2005
Posts: 1,335 |
The following is the spec for our bikes
Valve clearance Intake .15 - .20 mm
Valve clearance Exhaust .25 - .30 mm
Based on this I would say you need to adjust all your Intake valve shims.
Tom
Those who would give up essential liberty to purchase a little temporary safety deserve neither liberty nor safety.
Benjamin Franklin, US author, diplomat, inventor, physicist, politician, & printer (1706 - 1790)
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Re: Valve clearance ?
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Joined: Jan 2005
Posts: 9,223
Big Bore
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Big Bore
Joined: Jan 2005
Posts: 9,223 |
You are out on the intakes and close to the top on 3 of 4 on the exhaust. I'd re-shim them. Use Pat's shim calculator (the Lounge Link Stash has a direct link) and a good micrometer and you can probably cross swap some of your shims to bring them into the center of tolerance. Definitely adjust.
"Never underestimate the power of human stupidity" - Robert Heinlein
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Re: Valve clearance ?
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Joined: Jan 2005
Posts: 18,825
"Lighten up, Francis."
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"Lighten up, Francis."
Joined: Jan 2005
Posts: 18,825 |
Those are pretty loose. Mine were all too tight.
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Re: Valve clearance ?
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Joined: Jan 2005
Posts: 1,335
Learned Hand
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Learned Hand
Joined: Jan 2005
Posts: 1,335 |
Phil,
When I adjusted mine I did them all to the high side. The way these engines are designed the gap will never get larger, but over time as the valves wear it will get smaller. If I am wrong please let me know.
Tom
Those who would give up essential liberty to purchase a little temporary safety deserve neither liberty nor safety.
Benjamin Franklin, US author, diplomat, inventor, physicist, politician, & printer (1706 - 1790)
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