Originally posted by JSB55
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Usually there is no gap between tip and rod:
PTCK2.jpg
Since that's not the sealing surface, I'd just lathe-dress it anyway.
The final step is to burnish the seat by cramming it onto the finished rod a few times, while it is held firmly in the chuck.
....Cotten
PS: I found one OEM seat that leaked beneath its brass insert. Some repops with plastic seats became highspeed fixed jets. In the early 80s, a plastic fuel filter did the same thing to me.
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