I have posted a little bit about my XT250 project, including ports/ valve seats and cam, but this question may relate just as much to the XS and other bikes.
On a bike with a single angle valve seat (45 degrees), like my XT250, I understand that a 3 angle (or more) seat will improve flow, and by that increase power.
So my question is if using hand held/ hand driven valve seat cutters for throat cut(s) and a top cut will give acceptable results. I am basically talking about 60/75 and 30 degree cutters.
For a back cut angle on the valve itself, i believe I can do this with a die grinder mounted in the lathe toolpost. Any thoughts on that as well?
On a bike with a single angle valve seat (45 degrees), like my XT250, I understand that a 3 angle (or more) seat will improve flow, and by that increase power.
So my question is if using hand held/ hand driven valve seat cutters for throat cut(s) and a top cut will give acceptable results. I am basically talking about 60/75 and 30 degree cutters.
For a back cut angle on the valve itself, i believe I can do this with a die grinder mounted in the lathe toolpost. Any thoughts on that as well?
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