Hi all,

I want to buy a small pylon racer and fit a 25size two stroke.

There is a big difference in rpm between an aero engine and a car engine.
Aero engine 17000-18000 revs
Car engine 30000revs

Why do car engines rev so much faster?
Is it possible to use a car engine in a plane? (The car engine has a prop driver fitted)

Any info would be appreciated.

Ulrich