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Old 09-17-2007, 11:34 AM   #1
Diderich
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rapidly decreasing valve clearance

I think I need an intake valve/seat replaced, anybody know where I can bring my head to, preferably on the south east side somewhere?

I have an '00 Triumph Sprint Ride Smart. I bought it at 8000 miles. At 10,000 miles one of the intake valves was at 0.05 mm clearance. I reshimmed it to 0.15mm. spec is 0.10 to 0.15. Now just 8000 miles later at 18,000 miles, that same valve is back down to 0.03mm. None of the other valves have hardly moved. I'm not a mechanic, but best I can figure based on the above information is that I have a "burned" valve, and at the very least it, and the valve seat need to be replaced... I don't have a compression tester...but the bike was running weak lately between 4000-5500 rpm, and kind of surging...that's why I checked the valves (and other things which appear to be ok....) Any other advice would be appreciated too...I'm not even sure a valve job is needed or even relevant.
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Old 09-17-2007, 11:47 AM   #2
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Old 09-17-2007, 01:46 PM   #3
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I'm not sure what's involved with heads, but I thought it was more of a machine shop kind of thing, than a motorcycle shop kind of thing. I can get the head off, no problem (pretty sure at least), and bring it somewhere...
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Old 09-17-2007, 02:05 PM   #4
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Before you pull the head. I'd recommend doing a leak down to confirm the problem. As far as the machine work, we can do that as well.
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