I'm just doing a top end rebuild on my XS after a cambelt "issue".
After I top the head off the block and started to remove the valve springs I noticed I was missing one lower spring seat I guess you would call it! It's more like a washer and sits around the valve guide, should I have 8 of them or does it not matter?
All the springs don't appear to have any major difference in height so I don't think they are used to shim the spring height, the only thing I can think they are there to do is to prevent the spring from digging into the soft aluminium head.
Can anyone shed any light on this for me?
Cheers
Graham