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In this thread I never mentioned any measurement of an oem inner valve guide. I only mentioned the diameter of a 6mm reamer, a typical valve stem, and an SI valve guide.
There is another factor to consider, and that is that bronze valve guides will be changed by the installation process. They have to be hammered in, and its so tight a fit, that there must be a large temperature difference for it to work.
The last motor I overhauled was 5 years ago or more. I'm a bit out of practice. My plan is to measure stuff, and fit stuff together well enough that the resulting rebuild will not be garbage. Its definitely possible that I might turn out an engine that will last a while, take a beating, and not burn oil etc. etc.
I already have that hat, ready to be crapped in and worn, if its still running a year from now. I think I'll have to put the procedure on Youtube for all to see.
I don't see this as a pissing contest, or backyard mechanics can't put an engine together right thread. This is an opportunity to learn about rebuilding issues and problems.
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