Honda GX340/390 on Ariens 10000 - Snowblower Forum : Snow Blower Forums
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post #1 of 13 Old 04-11-2019, 08:31 AM Thread Starter
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Honda GX340/390 on Ariens 10000

So I know the Predator engines are Honda clones, but I've come across a GX340 11 hp to replace my Tecumseh HMSK100 for my 32" Ariens and I'm A) not sure if it's worth it, and 2) if it is, is it a direct bolt on or would this require any additional fabrication? I can't seem to find information on GX bolt patterns and spacing to compare to the HMSK engines.
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post #2 of 13 Old 04-11-2019, 11:18 AM
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Take the Honda over the predator, much better engine. The bolt hole spacing are usually universal standard chassis size for engines of specified chassis size, meaning the Tecumseh is a "medium" chassis. Most of your medium chassis bolt hole spacing's are the same. They have small, medium, and large chassis size spacing's for different sized engines.
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post #3 of 13 Old 04-11-2019, 02:07 PM
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The main problem might be the shaft diameter.....? Not sure they are "easy" depending on which one is bigger...... hopefully the Honda is smaller. In which case you can simply sleeve it. I have done that with a chunk of EMT conduit before and it worked out well. (had to cut a slit for the key of course)

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post #4 of 13 Old 04-11-2019, 02:31 PM Thread Starter
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The main problem might be the shaft diameter.....? Not sure they are "easy" depending on which one is bigger...... hopefully the Honda is smaller. In which case you can simply sleeve it. I have done that with a chunk of EMT conduit before and it worked out well. (had to cut a slit for the key of course)
The one I am seeing is a 1" shaft, and my current pulley is that too.
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post #5 of 13 Old 04-11-2019, 03:04 PM
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The honda will be metric I'm sure... but you may also need a belt depending on how much offset it has compared to the old one. Either way, you will like how much smoother it runs! Those Honda's are tough to beat! I put one on my Craftsman and that thing is beautiful. I'm looking at doing the same thing to my tiller this year......

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post #6 of 13 Old 04-11-2019, 04:25 PM
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If it's a 1" crank, then it's a general purpose engine, like from a pressure washer.



You will need to drill new holes on the Ariens as the GX engine block is significantly larger and you will likely need a different belt cover, as the crank height is higher on the GX as well.


I have a GX390 installed on a 924 series, and here are the holes I had to drill:





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post #7 of 13 Old 04-11-2019, 05:12 PM
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This will be a great swap....
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post #8 of 13 Old 04-11-2019, 06:07 PM
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For GX390 it is 7.70" on center left to right and 4.1" front to back. Two of the base holes are slotted (0.7)(1.1).

One of the SBFer's just offered engine manual from Gx240 to 390 and it has engine schematics.


Same dimen. for 340!!!

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post #9 of 13 Old 04-11-2019, 06:55 PM
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Tabora was very nice to offer Honda manual on 03/25/2019.....if you want to look back.
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post #10 of 13 Old 04-11-2019, 07:19 PM
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Quote:
Originally Posted by SimplicitySolid22 View Post
Tabora was very nice to offer Honda manual on 03/25/2019.....if you want to look back.
Tabora's post:
https://www.snowblowerforum.com/foru...ml#post1664439


PDF manual direct link:
https://www.wincogen.com/wp-content/...0-GX340_SM.pdf

Honda HS828TAS (1991) Made in Japan with Thai built GX240
Honda HSS1332ATD (Late-2015) Made in USA with Thai built GX390

180" to a rare 350" of snow per year (Alberta Clippers & Lake Michigan), 644' gravel driveway, 2 vehicle parking areas, 500' of trails around small house with an unheated garage.
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