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Extreme Speed Prop Planes Discuss the need for speed with fast prop planes (Screamin Demon, Diamond Dust, Shrikes or any REAL sound breakin'''' plane)

blown plug

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Old 07-23-2005 | 08:16 PM
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From: Milford, MI
Default blown plug

older Rossi plug anodized red...

must have gone lean...
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Old 07-24-2005 | 12:59 PM
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Default RE: blown plug

normally you blue a plug when the engine is lean
Old 07-25-2005 | 08:44 AM
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Default RE: blown plug

All of the Rossi plugs I've used for the past 25 year have been black. Im not sure what that one is.

That seal simply failed. Might have been lean, most likely it was just a bad seal.

Merlin Hot, K&B-HP, Fireball, Rossi R4, NovaRossi 4 - only things I will use for a speed application.

Of note, if it did get hot, be sure to check the head bolts - make sure they are secure.

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