Pinking Spitfire

["Chris Boston" <spitfire@zeu.tt.umist.ac.uk>]

just read the tr4 note, and thought I'd add my problem to the pot.

my 1500 is pinking under medium load (away from junctions and up hills etc.
 The timing is spot on 10 BTDC, the carbs are balanced and set for 4 percent
emissions and the advance unit is working (when I suck the pipe).

What can I do to stop my pinking?  what have I missed?.

Cheers,

Chris.

-- 
-- 1977 Spitfire 1500...Everyday/Only Driver.
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