bildan a écrit:

It's very hard to
see how two spark plugs could fit in a cylinder head with 4 valves and
two overhead cams.

Check Mercedes engines: they have 2 spark plugs per cylinder
from 10 years either on V6 or V8 or V12...

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une télé qui s'éteint et c'est un cerveau qui s'éveille
Philippe Vessaire Ò¿Ó¬