Quote:
Originally Posted by GB SISSON
What am I missing here? Doesn't heating a ring shaped object make it bigger around, not smaller? I'd like to change out an exhaust valve seat in an 8ba block. The seat in question has a bunch of punch marks around it to make it tighter fitting in the block. It is quite apparent that it was done and then run that way with no ill effects, but??? I have mig and oxy/aceteylene. I think I will get a photo of what I'm dealing with. Somewhere I have an envelope with 4 slightly oversized seats.
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What is going on is that you are "heat shrinking" the seat . . . once it gets cold (you can quench it), it will fall out.