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10-25-2009 | 12:31 AM

#32

DarZeelon

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From: Rosh-HaAyin, ISRAEL

RE: Plug temperature

Quote:

ORIGINAL: Broken Wings

It 'behaves' colder.....?

BW,

Yes.

The OS F plug is hot.
It is intended exclusively for four-stroke engines; to retain the glow over the exhaust period, so it is capable of igniting the mixture, during the engine's next revolution...

Large engines need to use colder glow-plugs and smaller engines need hotter glow-plugs; yet the F plug behaves very nicely in large engines, like the ST 2000-2300 and many others.
It does this, despite being hot and it is not necessary to richen the mixture, beyond the cold plug setting for the same engine...

...Hence; 'acting' colder in some engines...

The Enya #3 is the only plug they specify for four-stroke engines; despite not having the 'protruding snout', Ã* la OS F...

Like the OS F, it also 'behaves' like a cold plug, under certain circumstances.

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