3 angle valves


New Member
Hi again, so I'm thinking of getting a 3 angle valve job done on my valves and wondered if this will effect the shim clearance (as valve may sit slightly higher in head) when I rebuild it. So my question really is, how can you make the clearance bigger? I've seen the posts about using feeler gauges to add material under the shims but wondered what's the trick if I need to reduce. Thanks