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Old 06-12-17, 10:52 AM   #1
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Default PB plug

Can anyone give me an idea of the spark plug originally fitted to a 1939 Ruston PB 3HP.
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Old 06-12-17, 12:54 PM   #2
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Probably a twin electrode KLG.

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Old 07-12-17, 11:40 PM   #3
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My 9pb was fitted with a 8 com when I found it and to be honest it had been there for a very long time!
Petter A, Wolseley AC, war finish lister d, 1927 shafty lister d, 1952 lister d,1959 lister d, 1946 Jap compressor set,1943 Ruston 9PB, 1941 atco mower, 1955 fordson major E1A.
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Old 07-12-17, 11:54 PM   #4
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Probably be a lodge bbl...

Potest non melior Petter. milia passuum melius quam Lister
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Old 08-12-17, 08:11 AM   #5
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Probably be whatever plug the manufacturer could buy cheapest as each batch of engines was completed!

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