Re: Mercury KF7 rusted tight powerhead

[chinewalker]

I went through a KF7 early this spring with a very tight powerhead. After numerous attempts at soaking with various elixirs and gentle tapping with dowels, I ended up sacrificing the crankcase to salvage the block and crankshaft (I had another crankcase on hand). At some point the desire to save every part has to be weighed against the ability to do so, safely and within a suitable amount of time. In the end, I got a good crankshaft, one good piston, and the block. These were all put to good use as I got it running a couple weekends ago!