I have heard about this from a friend, he didnt really tell me a whole lot about it. but when i talked about buying my 2G he said they were known for having that happen. he said that my 2G will for sure get it, its just a matter of time. what is it and how can it be prevented?
Thanks,
Mike

Here's one of the many, many, many, views and write ups on it. READ and search.

http://www.magnusmotorsports.com/crankwalktheory.htm

120K miles on my 2G 7 bolt motor and the last 70K miles have been pushing over 320whp daily. soon to try my luck with even more power daily.

Found this article.The last 2 parts I find particularly interesting.

Modifying the Thrust bearing as stated in the article makes a shitload of sense, since it gives the thrust surface a direct supply of oil.Mike, whats your opinion on this?

The last part makes alot of sense as well.Its very feasable a current flowing from the bearing to the crankshaft(or vice versa) could break up the distribution of the oil film on the bearing surfaces.

http://www.aera.org/Tech/tb1465r.htm

That statement is taking it a little far. Some walk, some don't. My original 7 bolt made it to 165,000 miles. It may have made it a lot further had the stock air filter not shriveled up into a ball causing the piston rings to wear out. :headache:

That is interesting info Eric, thanks for posting it. Once we get Chris's shortblock back apart, if there is not irreversible damage to the crank, caps and block, I may try that in addition to using "H" rated bearings. As far as the procedure goes for setting the bearings, that describes exactly what is done when we put any of our engines together, the only exception is when the CRCO kits are used, the main cap is fixed and will not move in any direction so tapping it towards the back of the block is pointless. The caps are very accurately located however so when they are aligned, the thrust surfaces are flush. The rest of it still applies.

Funny that article didn't mention anything about pressureplate force as an issue, they rambled on about torque converters enough though which I wouldn't have seen as a problem.