cubs and their horsepowers

K

kenscub

Member
For the record I have a '49 cub with what think is a 11 hp engine. some later cubs had 12 , 14 and some of the later cubs had as much as 16 hp. What was the difference in the engines to give that- as much as a 50% increase in hp. ken
 
The later ones had domed pistons, different manifolds, I believe different cams, at least the numbers were different, and lighter governor weights. In addition, the earlier ones were measured using drawbar horsepower, and as I understand the later ones were measured using engine horsepower.
 
Some of the changes I've read about here that increased the hp are: timing change, rpm change, larger intake/exhaust, different (Zenith) carb, domed (aluminum) pistons, change in head, governor and there probably are others that I've forgotten or don't know about.
 
In order to cut cost the cub was carefully engineered to meet the industrial specification 2hp2f. (more commonly known as the "2 HP to few" standard).
By doing this, not only was the cost of engine manufacturing lowered, but both the drive-train build cost was lowered AND customer satisfaction greatly enhanced. This is due to the fact that the average user would not know to complain that there was no diff lock. :roll:
 
The original motor was 13hp at best, the 184 Cub has 18hp. 184 motors work really nice in original Cubs.

At the recommendation of Boss Hogg I put a 184 motor in my 52 Cub and you can really tell the difference. I ran the 184 motor originally with the IH Carb it worked ok, but I put the Zenith carb on the motor. The biggest difference is the 2400rpm governor on the 184. The 184 motor lets me go as fast if not slightly faster in 1st gear as the original went in 2nd. Needless to say I mow in 2nd, and I can mow faster and in grass that is taller and wet.
 
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