Difference between 9/10/11hp Tecumsehs? - Snowblower Forum : Snow Blower Forums
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post #1 of 11 Old 12-31-2016, 01:24 AM Thread Starter
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Difference between 9/10/11hp Tecumsehs?

Does anyone know the difference between the 9/10/11hp Tecs on the 26-30" Craftsman blowers?

Compression? Rpms? Cam?

I have a 9/29" and it looks exactly like an 11/30" I've seen up close. If it wasn't for the stickers- I couldn't tell them apart?

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post #2 of 11 Old 12-31-2016, 01:51 AM
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I believe it's stroke but I'll let an expert advise
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post #3 of 11 Old 12-31-2016, 02:48 AM
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i thinks its the cylinder bore, maybe a combination of stroke and bore size though
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post #4 of 11 Old 12-31-2016, 08:18 AM
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From what I've seen, it's "badging." Same engine with a different label. MH

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post #5 of 11 Old 12-31-2016, 08:47 AM
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Do they use different Crankshafts; if not, then it's mostly just Bore.

Do they use different Heads; if not, then it's strictly Bore.
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post #6 of 11 Old 12-31-2016, 11:04 AM
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I have a Tecumseh on a MTD that's labeled as a 10.5 hp. Sometimes it sounds more like marketing than anything else. I don't ever remember seeing another snowblower engine with a x.5 hp rating.
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post #7 of 11 Old 12-31-2016, 11:10 AM
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I have an 8.5 HP; but it does seem that everyone has dropped the expression of their HorsePower Ratings and now put the engine Displacement in their advertising, expressed in CCs.

Last edited by Vermont007; 12-31-2016 at 11:17 AM.
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post #8 of 11 Old 12-31-2016, 11:13 AM
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I have an Mtd with an 8.5hp stickered Tecumseh. The model number on the engine is LH318SA. I'm assuming it's 318cc. What's the model number for the 10hp 11hp....
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post #9 of 11 Old 12-31-2016, 11:19 AM
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Quote:
Originally Posted by Vermont007 View Post
I have an 8.5 HP; but it does seem that everyone has dropped expressing their HorsePower Ratings and now just puts the Displacement in their advertisg, expressed in CCs.
Everyone's hp numbers we skewed for years. Then an SAE standard on measuring hp was established. Problem was the SAE number was lower them the number the manufactured were advertising. The gross torque number was the higher number so that became the number to advertise for most manufactures. Others just stuck with CC's.

Torque is the important number, hp is a calculation of torque.
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post #10 of 11 Old 12-31-2016, 02:00 PM
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I've had a 7 hp and a 10 hp TEC apart side-by-side. In that case the bore, block and cylinder head are definitely different. Included was the carb setup, muffler and some other things. On the bigger ones, I'd suspect there's at a minimum some subtle differences between them.


If nothing else, see if you can get manuals on them and start comparing part numbers.
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