RE: valve cover

[Jonas Karlsson <jkarlsso@metabolex.com>]

Cory Fonger wrote:
>if im gonna replace my valve springs and cam im not gonna hafta 
>take
>the head off or pull the engine out at all am I?
>
>-cory
>

  Cory,  
  In order to replace the cam, all you have to do is to remove the valve 
cover, timing belt, and then the cam "bearings." easy. 
  For the valve springs, you have to compress the old valve springs. This 
is -traditionally- done by having a special compressor tool press on the 
surface of the valve and the spring retainer, then you remove the little 
half cylinder "wedges" that keep the spring retainer on and then the 
springs are off. Doing this with the head still on would be very 
difficult. I do remember that Autotech sells a valve spring compressor 
for $130 that claims to allow valve spring removal and installation 
without removing the head from the enging. I don't know how this tool 
works specifically, but you could ask them. Seems pretty expensive to me 
though. 
   I have heard of people fabricating an old spark plug into an air 
pressure coupler, so that you just hook that up to an air compressor 
while it is installed on a cylinder. This would then put enough pressure 
on the valve that you could remove the spring and install new ones. I 
would turn the crank so the piston was at the top of it's stroke for 
that cylinder, just in case you lost pressure, so that the valves 
couldn't fall into the cylinder. 
  I'm sure others have more helpful input. 

HTH

Jonas
'85 'Roc




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