Wow, do you know what came loose in the engine?

 

well, it stands to reason it was the stock INA cam bearing....

when i opened her up i wondered why it had adjustable pushrods with a stock cam.... but then upon closer inspection i noticed she had a new Torrington B138 in her

...that's all i needed to figure out what had happened!

 

I have same problem with my 93 evo motor,how did you resolve this and how much work did you have to do to replace it.also what oil pump did you use to replace old pump.