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Nitro glow plug

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It's a Mac 28 engine, are these any good

Screenshot_20241111_164509_Chrome.webp
 
They want you to run a McCoy #9…
If that is the manufacturer's recommendation, then that is the plug I would use. Some plugs are long reach, and some are not. Using a plug that is a wee bit too long can potentially collide with the top of the piston. The O.S.#8 isn't always the plug for everything.
 
If that is the manufacturer's recommendation, then that is the plug I would use. Some plugs are long reach, and some are not. Using a plug that is a wee bit too long can potentially collide with the top of the piston. The O.S.#8 isn't always the plug for everything.
Exactly. 🍻🤘
 
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