03-02-2012, 11:25 AM | #11 |
Join Date: Mar 2009
Location: Sardis, BC, Canada
Posts: 25,977
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I've changed many valve stem seals on cars with the heads in place, and it works quite well. What stops you from performing the same procedure on a bike is that there's no room for the valve spring tool in such a confined space. The only solution is to use a c-clamp style valve spring compressor that holds the valve from the back side. They're reasonably priced.
BTW, I wouldn't disturb the piston; I'd just remove the head and change the seals. If it makes good compression, I wouldn't even remove the valves. That means no farming out at all.
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Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer |
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