what is the difference? Original Message Nov 20, 2011 8:39 am
I have a techumseh HMSK 80 318cc- they say it is rated at 8 hp. I also notice there are 318cc 10 hp units , so what s the difference? RPM? if so I also notice there are 356cc 10 HP Techunseh units. If so what is the difference in 10 hp 318 and and a 10 hp 356. I do not know of any power curve charts for these engines .
Re: what is the difference? Reply #1 Nov 20, 2011 9:52 am
The difference is the level of intoxication that the Tecumseh sales people attained prior to assigning the horsepower rating. Briggs and Stratton are famous for this as well. Their 305cc engine is rated anywhere from 9 to 11 h.p. I went through all the engine parts lists to find something different and there are none. Accordingly, it's strictly a piece of marketing b.s. Take your choice. Eight or ten? Same engine, different label.
Re: what is the difference? Reply #2 Nov 20, 2011 12:14 pm
bus708 wrote:
I have a techumseh HMSK 80 318cc- they say it is rated at 8 hp. I also notice there are 318cc 10 hp units , so what s the difference? RPM? if so I also notice there are 356cc 10 HP Techunseh units. If so what is the difference in 10 hp 318 and and a 10 hp 356. I do not know of any power curve charts for these engines .
318cc - 10hp one should have variable valve timing. :D
Location: Michigan - 3 hours north of Chicago on the lake
Joined: Feb 10, 2010
Points: 539
Re: what is the difference? Reply #4 Nov 20, 2011 6:07 pm
For what it's worth. Good or bad, right or wrong. I always just use Honda's specs. as a base. They have always rated their engines with a CC and Hp rating.
5hp - 160cc
8hp - 240cc
9hp - 270cc
11hp - 340cc
13hp - 370cc
Since all the other manufacturers have started using displacements. Figures are all over the board. We were all better off when all they did was fudge the Hp ratings.
