Quote Originally Posted by Tank View Post
Brian, what RPM do these motors rev to (safely), these engines are only 159cu.in. was wondering what sort of torque they put out, Regards Frank.
I have a spec sheet for an industrial 3-53N engine which is 92 hp @ 2800 and 200 ft/lbs @ 1500. This is a continuous rating for stationary applications and is pretty conservative. This is the naturally aspirated version. In the TIBB form for automotive/ mobile plant applications torque is 320 ft/lbs @ 1800 rpm and 275 ft/lbs @ 2500 rpm. TIBB is turbocharged, intercooled, blower bypass. These little engines can be safely tweaked up to 3000-3200 rpm in a lightweight installation.

Registration authorities might buck a bit at the TIBB format. If trying this on perhaps one could get it engineered and registered as an N and convert to TIBB afterwards.