1995 Simplicity 860 Vs New 'Signiture Series' POWERPLANT - Snowblower Forum : Snow Blower Forums
 
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post #1 of 7 Old 11-23-2017, 12:15 AM Thread Starter
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Talking 1995 Simplicity 860 Vs New 'Signiture Series' POWERPLANT

Hello Guys,

I am looking to repower a simplicity 860 that has a tecumseh HM80. The tecumseh is loud as ****, smokes, etc. I love that actual 860 snow blower it is really heavy duty, I just am not it love with the power plant on it. (Its not you, its me...)


The newer simplicity signature 1524E looks like the same exact frame and handle assembly as the 860, just powered by a new 14.50 Briggs and Stratton OHV - I found a new B&S engine online for about $250 and I am seriously considering shoehorning the bigger engine in!

Crank height is the same as the HM80 at 4.17in. I would need a crankshaft adapter sleeve from 3/4 to 7/8.

The engine bolt pattern is where I would have to swiss-cheese the frame a bit (only 4 holes), but I'm still very interested!


Crankshaft length...Unknown


Has anyone ever done a similar swap before, have details I might not have thought about or have advice on how hard it might be to accomplish?


Thanks in advance,



-Brian
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post #2 of 7 Old 11-23-2017, 12:48 AM
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ALOHA from the Paradise City.

Long LIVE THE POWERSHIFT!! MAY IT NEVER RUST IN PEACE!!
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MAHALO!!!!!!!!!
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post #3 of 7 Old 11-23-2017, 12:57 AM
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The bones are the same, but I don't know about the holes.....

To keep you motivated, I have included a video to an older 860 with a predator 420cc shoehorned into it.

Watched the video and for a split second I smiled at the fact of the motor blowing up on mine.....


Let'er buck and post up a walk thru. I know someday when my motor "retires" I'll do the same.

Steve

Simplicity 860DLXE (1694241)
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post #4 of 7 Old 11-23-2017, 09:24 AM
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The Briggs should be a 305 while the Tec is a 318 i believe. So if you want bigger you might have to bump up on the Briggs a little bit. That being said you should be happy with the briggs power output, and noise level compared to the Tec.

74 Ariens 832
8? FMC Bolens 824
02 White 4x4 Snow Boss
90 Lawn Boy ST320
88 Honda 300FW w/plow
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post #5 of 7 Old 11-23-2017, 09:33 AM
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How about this one for good measure:

https://www.briggsandstratton.com/na...ries-snow.html

2017 Toro Power Clear 721R
2018 Simplicity Select 1024
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post #6 of 7 Old 11-23-2017, 10:19 AM
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go with the predatoro 40cc or the lct 414cc. both are great engines you cant go wrong with
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post #7 of 7 Old 12-21-2017, 06:54 AM
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I repowered mine with a predator 300cc or 8hp and it was a straight bolt on replacement. no issues at all and way more power than the old Tecumseh

Current machines-
1978 Bolens 8/24 (Loncin 420cc engine upgrade)
1986 toro powershift 6/24 ( 212cc Predator upgrade)
1988 Simplicity 860 (Predator 301cc upgrade)
1995 Honda HS 621
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