Down side of teardown, #2 rod bearings were virtually non existant. Almost looks like the set spun together...there was nobearing material left on the shells. Rod journal on the crankshaft for #1 is beyond repair and #2 is about as bad as I have seen. #3 and #4 were like satin once the assemblies were pulled. Cool thing is the block is sound and never been cut. Cylinders are flawless and still have a hint of the original factory honing pattern. So no overbore will be required. Funny thing I seen with the head off brought back memories from my first engine failure. I peered down the #1 cylinder and seen the crystal clear imprint of the combustion chamber stamped onto the piston face. program to resize and dial in. I have never seen lower end damage this severe that didnt involve a rod ejecting through the side of the block.
~Darin <img src="/forums/images/graemlins/baby.gif" alt="" /> [/quote]
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>>>*What you are seeing is actually getting to be common. With so many of these little engines now hitting 200 to 300K and up, we are finding the upper limits for bearing's ability to withstand load.

Used to be, when we saw a bearing fail it was kinda like tracking a Chicken through a snowbank, the reasons were obvious.

Now we are seeing bearings that just fail, everything around them looks just fine. So I am suspecting that we are simply seeing the end result of service life. Once a bearing begins to fail, it can go quickly and all by itself, the piston begins to rub, then strike the head as wear continues.

We all go look for something wrong in the timing setup....*LOL**...Hey! *Everbody knows that's all that ever goes wrong..been there and done that one myself.

*Only one thing to do....come up with an even better bearing..*In the works, by the way.....*EB