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post #1 of 30 Old 02-22-2020, 10:53 AM Thread Starter
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Replacement engine

I have a 2005 Craftsman snowblower 1350 snow series 27" with a broken 1350 Briggs and Stratton Snow series engine. I cannot find an equivalent engine near that HP and torque with a 3/4" crankshaft. The closest I came to was a Pro Point engine from Princess Auto but the 1350 has a 3/4" crankshaft with a double pulley. The Pro Point has a 1" crankshaft. I cannot find pulleys to match. Does anyone have an idea where I can go from here? I have not bought the Pro Point engine yet.
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post #2 of 30 Old 02-22-2020, 11:48 AM
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the double pulley,meaning one on the crank and a 1/2 speed of the extended camshaft pulley makes it hard to re-power any machine with one,

it's been done in here ,with many threads on how to, please take note that it's a lot of work
https://www.snowblowerforum.com/foru...0engine%20swap
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post #3 of 30 Old 02-22-2020, 12:05 PM
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Due to it being a Canadian Craftsman the model number of the blower might not help but can you please post it in case someone has some detailed info on it ?

You could always check with a machine shop to see what it would cost for someone to take the pulley and bore it out to 1" and cut a keyway into it.

Have you checked a couple of sources for pulleys and what it would cost you to get it up there ?

https://www.mcmaster.com/Pulleys
https://www.mscdirect.com/products/pulleys?rdrct=pulley
https://www.globalindustrial.com/c/m...ulleys-sheaves
https://www.northerntool.com/shop/to...cBiw&gclsrc=ds

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post #4 of 30 Old 02-22-2020, 12:25 PM Thread Starter
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I checked on those sights you sent but unfortunately they do not have what I will need. Is it possible and safe to have the crankshaft on the new motor machined down to 3/4"
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post #5 of 30 Old 02-22-2020, 12:50 PM
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I think you may have this type of pulley you are calling "double pulley?" You don't have to have it one piece, you can get two separate pulleys/sheaves. You can also get key stock so you don't need to have an integral key either. I think some manufacturers went to this design to speed assembly. If I was really critical I'd say they did it to make their product more difficult to service or swap engines with other manufacturers.


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post #6 of 30 Old 02-22-2020, 12:52 PM
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Quote:
Originally Posted by 87powershiftx2 View Post
the double pulley,meaning one on the crank and a 1/2 speed of the extended camshaft pulley makes it hard to re-power any machine with one,

it's been done in here ,with many threads on how to, please take note that it's a lot of work
https://www.snowblowerforum.com/foru...0engine%20swap
One pulley spins the opposite direction of the other when it is a crankshaft and camshaft pulley.
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post #7 of 30 Old 02-22-2020, 01:03 PM
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Do we know it's actually that type of engine, though? It was referred to just as a double pulley. That could mean 2 belts driving the auger, etc etc. I know Tecumseh made engines with 2 output shafts, did Briggs, in that time frame?

chrisqc, to avoid confusion, does your engine have 1 output shaft, or two? Some pics would help.

As to whether the crankshaft could be machined down, maybe. I mean, it can probably be done. But if you had to disassemble the engine, remove the crankshaft, and have it machined, I have to wonder if finding a "proper" replacement would be easier, cheaper, and more likely to be successful.

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post #8 of 30 Old 02-22-2020, 01:08 PM
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Quote:
Originally Posted by RedOctobyr View Post
Do we know it's actually that type of engine, though? It was referred to just as a double pulley. That could mean 2 belts driving the auger, etc etc. I know Tecumseh made engines with 2 output shafts, did Briggs, in that time frame?

chrisqc, to avoid confusion, does your engine have 1 output shaft, or two? Some pics would help.

As to whether the crankshaft could be machined down, maybe. I mean, it can probably be done. But if you had to disassemble the engine, remove the crankshaft, and have it machined, I have to wonder if finding a "proper" replacement would be easier, cheaper, and more likely to be successful.
yes! the op has a double on a single shaft ,his issue is he can't find a 3/4 shaft only 1 inch that will work, plus he is looking for the same od pulleys
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post #9 of 30 Old 02-22-2020, 01:28 PM
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Is it possible and safe to have the crankshaft on the new motor machined down to 3/4"

Sure. Just a bit of work taking a new engine apart and then buying the gasket kit to reassemble, IMHO.


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Last edited by Kiss4aFrog; 02-22-2020 at 01:31 PM.
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post #10 of 30 Old 02-22-2020, 06:26 PM Thread Starter
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Yes that is what I have. And yes I agree with you on the builders thinking.
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