saturday i was looking for a banging (not knocking ) noise in my engine i had the oil pan off so decided to have a look at the main bearings they've only done about 20 k miles # 1 was in great condition removed # 2 & got a surprise the bearing was worn out on the non thrust side on about 1/4 of the bearing from the edge down the crank journal is slightly dark colored like it got hot but is still smooth & not scored at all i checked all the other 3 main bearing & they all look like # 1 does does anyone have an idea about why 4 are like new & 1 is worn out will the crank journal be ok or should i have it checked & would it be safe to put another bearing in # 2 mains.

after talking to a friend of mine about a new crank pulley mine has a broken rubber & the ring slides off he sugested it may be getting harmonic vibrations because its out of balance & that maybe what destroyed the # 2 bearing does that sound feasable i would welcome your ideas on the matter as i would like to fix it as soon as possible thanks guys.

moz. geelong victoria australia.

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