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Author Topic: 10/12.5 briggs flat head  (Read 7729 times)

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Offline westonedelbrock

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Re: 10/12.5 briggs flat head
« Reply #15 on: October 12, 2011, 11:11:02 pm »
would a 12 horse be a 25 or 28 cube? what is the difference between them?
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Offline jerb

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Re: 10/12.5 briggs flat head
« Reply #16 on: October 13, 2011, 01:05:27 am »
a 12 would typically be a 28 cube engine, look on the engine tag, first 2 numbers will be the cubic inches, a 11 horse or 25 cubic inch engine has a smaller stroke and the block has a shorter deck height....
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Offline westonedelbrock

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Re: 10/12.5 briggs flat head
« Reply #17 on: October 13, 2011, 07:14:20 pm »
its a model 28 but what gives it a half horse less than a normal 28 which is a 12.5?
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Offline Rooster

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Re: 10/12.5 briggs flat head
« Reply #18 on: October 13, 2011, 07:29:48 pm »
The Sticker
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Offline BIG AL 202

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Re: 10/12.5 briggs flat head
« Reply #19 on: October 13, 2011, 08:03:12 pm »
Quote from: westonedelbrock on October 13, 2011, 07:14:20 pm
its a model 28 but what gives it a half horse less than a normal 28 which is a 12.5?
Never go by the sticker, always use the model number. 12, 12.5 and 13 HP can all be 28 ci, but most of us have seen 28ci with 11hp stickers. Get a single cylinder flathead repair manual from a briggs dealer, it CAN answer most of your stock questions. Why different hp ratings, only briggs knows for sure, same parts different horse-power RATINGS!
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Offline Smowkin Joe

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Re: 10/12.5 briggs flat head
« Reply #20 on: October 13, 2011, 08:31:02 pm »
 I've noticed the '.5' extra horse power rated engines have the newer 2 piece carburetors.
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Offline Johnson Mowersports

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Re: 10/12.5 briggs flat head
« Reply #21 on: October 13, 2011, 08:50:05 pm »
the lower hp rating have a lower governor speed the higher hp will be 3650
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Offline junkyard

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Re: 10/12.5 briggs flat head
« Reply #22 on: October 14, 2011, 08:14:59 pm »
hello i found on the heads it gives you the cubic inch on them between the fins 
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