R/C Tech Forums - View Single Post - Why do engines have such large squish clearences manufactured into button?
Old 04-03-2013 | 06:33 PM
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Imbue
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Originally Posted by wmazz
Yes I also agree with you.

But what I don't understand is why a good 2.5cc airplane engine will run .005" - .006" and run up to 35% nitro
on the same set-up, why doesn't the car engine manufactures do the same? Is this something they save for there
own team engines, or is it goon clearance, or something else?


Bill Mazz
RPM & Oil Content are the two main things I can think of, off the top of my head. The oil being much more resistant to detonation than Nitro or Methanol, and the engines only spin 50% the RPM that car engines do.
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