Head reassembly questions

["Ben Channard" <zeroid@hotmail.com>]

This is regarding a solid lifter 8V head that I'm rebuilding for a JH 
transplant.

1)  When reinstalling the valves, what is the best way to attach both keeper 
halves without having them fall off?  Will some sort of grease (assembly 
lube) be tacky and safe enough to keep them in place whilst relieving 
pressure on the springs to lock them in place?  By the way, I compressed the 
springs with a scary rig consisting of a 6" c-clamp and a short length of 
PVC pipe with windows cut out of them.

2)  Should the studs which hold the bearing caps be replaced or can they be 
safely reused?

3)  My impression of the consensus opinion regarding valve guides is to 
replace them but my Bentley says that they should only be replaced if worn.  
Since the guides are pressed in, does each cycle of R&R loosen them?

4)  I'm still debating whether to install a G-grind cam.  If I decide to go 
for it, should I install it into the re-virginized head or after the motor's 
break in period?  The reason I ask is because according to the Puma Racing 
site: <http://members.aol.com/pumaracing/cam1.htm> a new cam must not be 
allowed to idle but run at a constant 2K rpm for the first 20 minutes of its 
life to properly work harden the lobes.  This doesn't seem to be friendly 
with the break in protocol for the rest of the motor (assuming it starts), 
so should the motor be broken in first (with the original stick), then the 
new camshaft?  I realize this will entail all the pleasantries associated 
with removing the timing belt but if it's gotta be done....

Thanks for any input.  benton-----
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