When I did my '71 TR6 head, I had seat recession on one of the valves. Took
the shop all new valves, springs, guides, keepers, retainers. Used Stellite
valves, manganese-bronze guides, and let the shop find hard seats. Told
them to make it for unleaded use. It has worked very well. My opinion is
that if it's out and apart, do everything at once to upgrade. Keeps you
from wondering about it later. These are all unleaded upgrades.
Peter Arakelian - '71 TR6 Daily Driver
Moss Motors, Ltd.
(805) 681-3400 x3214
(805) 692-2510 - Fax
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