Tr3A - Valve guide clearance

[Adrian Jones <AdrianJones@compuserve.com>]

Hi Folks,
The machine shop called today to ask me what the clearance (valve stem to
guide) is for BRONZE valve guides in a TR4 head.  (I had decided to put in
new bronze valve guides and springs).  The specs for cast iron guides are 1
to 3 thou inlet and 3 to 5 thou for the exhaust - is this the same for
bronze?

Many thanks for any advice,   Adrian