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MikeC5

"Pop-Up" pistons?

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I was perusing through the DBC News CDs and came across an article on a '24 touring car restoration (AS95). In discussing the engine the author says

"I install four new exhaust valves and pull the pistons, which have “pop-up” tops. They and the rings look good, so I reinstall them."

I haven't heard this terminology before. Does anyone know what pop-up pistons are?

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Hi Mike,

I believe it is a terminology thing.... meaning, some call them dome or pop up.

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Thanks guys. That makes sense. It almost sounded like it was some sort of quick disconnect piston the way the author mentions it...

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