[Fot] Pushrod tube leaks oil

[Greg Solow]

Be careful using the socket to peen the tubes into place with the head on 
the car. It is easy to shift the tubes downward into the tappet galley. They 
are not supported on the bottom when the head is on the block. With the head 
on a steel workbench top or smooth concrete floor, the tubes can be swaged 
into tight contact easily. Using "wicking" loctite to really seal them top 
and bottom is essential to make them completely dry.  The most difficult 
part is getting ALL of the oil residue out of the space between the tube and 
the head. The Loctite will not seal unless the oil residue is completely 
gone. Very hard to accomplish with the head on the block. It is important to 
not get much of the degreasing agent down the pushrod tube and into the oil 
of the engine where it will break down the oil.  I suppose you could fit 
small corks or rubber plugs with a wire running through them so you could 
pull them back out after degreasing the gaps.  The bottom of the tubes also 
tend to leak, they can be degreased and sealed from the out side area just 
under the spark plug holes.
                                                                             
                                Greg Solow