Engine sizes!!! - Snowblower Forum : Snow Blower Forums
 
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post #1 of 9 Old 02-04-2011, 10:13 AM Thread Starter
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Engine sizes!!!

Ok has anyone else been getting annoyed at the descriptions of new snowblowers with the size engines in CC's!!!!??? I have no idea what 205cc's or 249cc's etc. are!!!! I have a 7hp blower. How many CC's is that? We definately need an equation chart in here to figure out engine size!!!!!
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post #2 of 9 Old 02-04-2011, 10:28 AM
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Here's a cubic centimeter to cubic inch converter.

Cubic Centimeters to Cubic Inches conversion calculator

Here's a table of approximations of cubic centimeter/horse power ratings on the do it yourself . com site.

cc to horsepower - DoItYourself.com Community Forums

According to that, your 7 should be right around 277 cc.
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post #3 of 9 Old 02-04-2011, 10:34 AM Thread Starter
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Nice I have roughly 17 cu inch motor or 277ish CCs!!! It still irritates me that they can't just spit it out on their descriptions from the get go though!!!
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post #4 of 9 Old 02-04-2011, 10:41 AM
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That would be too easy!
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post #5 of 9 Old 02-04-2011, 10:44 AM Thread Starter
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How big do the Briggs motors get on the bigger Sno thros? 342cc? 405cc?
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post #6 of 9 Old 02-04-2011, 10:58 AM
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Largest displacement they show on their engine site is 342 cc. Which, according to that chart, would be putting out about 12 hp.
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post #7 of 9 Old 02-04-2011, 12:32 PM
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Honda ratings:

GX120 119cc 4.0HP = 5.40 ft. pounds
GX160 163cc 5.5HP = 8.00 ft. pounds
GX200 196cc 6.5HP = 9.76 ft. pounds

OHV engines use less displacement to produce the the same HP as L-Heads.

Subaru engines are also suppose to be super efficient and can produce power with even less displacement.

Here was a discussion from last year on another site:
http://www.opeonthenet.com/phpBB2/vi...php?f=1&t=9945
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post #8 of 9 Old 02-05-2011, 10:18 AM Thread Starter
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L heads are basically Flat heads from what I see!!! It's like the first Ford V8 but they are pretty bulletproof from what I see on here and experience first hand with my 37 year old beast!
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post #9 of 9 Old 09-19-2011, 03:42 PM
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Torque vs HP ratings

Guys,

I did see this one conversion system on another site, it looks like this:

TORQUE VS. HORSEPOWER

TORQUE X ENGINE SPEED = HORSEPOWER
5252

example: 12Ft.Lbs x 3400 rpms=7.7 Horsepower
5252
Remember, you'll have to determine at what rpm range your engine was rated, usually it is 3400 rpm tops.

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