I have a recently acquired 1980 GS450L with 25.5k miles on it. I've disassembled the entire engine for inspection and overhaul because I know it's been left to sit for extended periods and may have been otherwise abused, and I decided to get most of the surprises out of the way up front. The engine seemed to be running ok before I took it apart.
Upon cracking the case, I discovered some flaking of the main bearing inserts. Primarily it's the left center crankshaft inserts (pictures below). They show (relatively) large areas where material appears to have flaked off, as well as areas where the flaked-off material appears to have adhered back on. All bearings exhibit at least small pits, however.
I have a basic understanding of engine workings (recently finished training as an aircraft mechanic), but little experience or wisdom. Basically, I'm wondering what else I should be looking out for if I've found my bearings in this state. I'm going to check the crankshaft runout just as soon as I can get my hands on a dial indicator, but what else should I be sure to check out?
Upon cracking the case, I discovered some flaking of the main bearing inserts. Primarily it's the left center crankshaft inserts (pictures below). They show (relatively) large areas where material appears to have flaked off, as well as areas where the flaked-off material appears to have adhered back on. All bearings exhibit at least small pits, however.
I have a basic understanding of engine workings (recently finished training as an aircraft mechanic), but little experience or wisdom. Basically, I'm wondering what else I should be looking out for if I've found my bearings in this state. I'm going to check the crankshaft runout just as soon as I can get my hands on a dial indicator, but what else should I be sure to check out?
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