Engine Still Knocking 4kq

[David Thoresen <epicfoto@lava.net>]

Thanks for all your replies to my question of engine knocking noises.

I checked everything and the knocking is getting worse... even when 
idling and standing still it will make a knocking noise, it seems to 
be coming from the cylinders around the middle of the engine...  
If I rev the engine it will go away or get worse (sometimes) then 
come back, other times  it will not knock at all...  when it does it
does get pretty loud.  It does not sound like a valve problem,  more
like a loose piece of metal banging against metal.

I have a photo on the web of my engine I shot with an arrow pointing
to where the knocking is coming from if that helps...  

http://www.lava.net/epicfoto/4kqeng.jpg

Thanks!

David Thoresen
'85 4kq (and maybe soon an engine transplant?)