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If you remove the valves from a head, is it essential that they are re-ground etc when re-installed or can they just be cleaned then re-installed?

Sep 29 2013 02:41 PM

minimadles
Decoke, check and relap them in is the best way forward
Sep 29 2013 06:19 PM
miniman24
Got rid of the majority of the carbon and the exhaust valves are rather pitted which means the seats are probably knackered too - may as well install unleaded ones haha
Sep 29 2013 06:47 PM
minimadles
Yes unleaded is the way to go if the head is later than about 1988 it will have hard valve seat inserts already and may be possible to reclaimed the valves by having them refaced
Sep 30 2013 08:12 AM