18 to 22 hp briggs intek

[kc5dlo]

I just bought a new lawn tractor from Sears and it has the 21.5hp
Briggs & Stratton Intek engine. I was comparing engines and noticed the 18 thru 22 hp engines all are same displacement. What
is different on the engines to affect the difference in hp?

 

[upgw]

Don't know, but maybe they have different max RPM ratings or some have OHV, so they breathe better and make more power from the same displacement....

- Patrick W.

 

[njrqs]

Outboard motors do likewise.

20, 25 & 30hp motors are same engines with different carbys on them.

Crude hey??