Valve seats. How to remove?

In general these vehicles don't get driven enough for it to be an issue. Also the valve spring pressure is relatively low. So, no, a lead additive is not normally used.
 
I would not think you would need any even if you drive a lot, our 33 often does long trips, last one out to the middle of Australia towing our c/van, 6 days at 50-55 mph in hot( 35C) dry conditions, just on straight 91 unleaded fuel, no drama
Lawrie
 
I pulled all 16 seats out of a 59AB by putting washers in and arc welding to the seat.
The washers also give a bit of shield to the block.
I had K.O. Lee- a company that makes valve seats- make me a set of 16 oversize seats.
Do this before boring the block.

Karl
 
Using My mig welder, It just takes 1/2 inch along the inside perimeter, and they practically fall put with just a tap of myu toy hammer/
 
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