You will in all likelihood need to recut the seats totally if you replace guides. This will result in needing very thin shims. Replacing guides is quite easy w/o heating the head, it getting the valve seat cut concentric to the new guide that's the PITA. I wouldn't change the guides unless you really have to.
Dave
Long Forgotten ’81 Pro-Link Resurrection
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daves79x
- ICOA Technical Director
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- Joined: Sun Oct 01, 2006 8:05 am
- Location: Knox, PA
- Location: Knox, PA