engine swap - Snowblower Forum : Snow Blower Forums
Reply
 
LinkBack Thread Tools
post #1 of 16 Old 04-17-2018, 10:25 PM Thread Starter
Senior Member
 
Join Date: Jun 2014
Location: Ontario, Canada eh
Posts: 1,094
Post Thanks / Like
Thanks (Given): 3
Thanks (Received): 55
Likes (Given): 61
Likes (Received): 188
engine swap

i was hoping to get some other peoples input on this. i picked up a 8.5/27 craftsman II snowblower a few weeks ago. i have always kind of liked the little 5/23 craftsman that i got for my sister. i think it mainly something about the handle and how comfortable it is to handle with the way i run a machine. the engine that is on it seems to run pretty good but i have been starting to like the newer OHV engines. they seem like they are a lot better on fuel than the old engines. i have this 208cc engine that i pulled off another snowblower earlier this winter that i know has 1" shaft. i was wondering if the 208cc ohv engine would be as strong and torquee as the 8.5hp that is on it right now. i like the 208cc for the fact it has both light and heated handle power output so i could possibly ad heated handles in the future but not sure if it would be able to keep up with replacing the 8.5hp or not. i know the 5hp engine on that 23 machine that my sister has works but it bogs pretty easily. i don't want to put too small of an engine on a big machine and have the same thing happen.

arien 520 snow blower 6.5hp swap
yardworks 31AH6WKF515
crazzywolfie is online now  
Sponsored Links
Advertisement
 
post #2 of 16 Old 04-17-2018, 10:43 PM Thread Starter
Senior Member
 
Join Date: Jun 2014
Location: Ontario, Canada eh
Posts: 1,094
Post Thanks / Like
Thanks (Given): 3
Thanks (Received): 55
Likes (Given): 61
Likes (Received): 188
i forgot to include a few pictures of the machine and the engine i was thinking about sticking on it.
Attached Thumbnails
Click image for larger version

Name:	20180324_150303.jpg
Views:	77
Size:	322.7 KB
ID:	142898   Click image for larger version

Name:	20180115_150312.jpg
Views:	81
Size:	225.2 KB
ID:	142906  

arien 520 snow blower 6.5hp swap
yardworks 31AH6WKF515

Last edited by crazzywolfie; 04-17-2018 at 10:48 PM.
crazzywolfie is online now  
post #3 of 16 Old 04-17-2018, 10:48 PM
Senior Member
 
dbert's Avatar
 
Join Date: Aug 2013
Location: Utah
Posts: 1,506
Post Thanks / Like
Thanks (Given): 32
Thanks (Received): 137
Likes (Given): 202
Likes (Received): 287
Is the current engine a single shaft or a dual shaft.
A quick peek under the belt cover will show that.
dbert is online now  
post #4 of 16 Old 04-17-2018, 10:54 PM Thread Starter
Senior Member
 
Join Date: Jun 2014
Location: Ontario, Canada eh
Posts: 1,094
Post Thanks / Like
Thanks (Given): 3
Thanks (Received): 55
Likes (Given): 61
Likes (Received): 188
i don't know. i haven't looked yet but i figure it wouldn't be too hard to convert it to a single shaft engine if it does have a dual shaft engine. the 208cc engine already has pulleys on it plus i also still have a few spare pulleys from a 10hp engine that i took some off of.

arien 520 snow blower 6.5hp swap
yardworks 31AH6WKF515
crazzywolfie is online now  
post #5 of 16 Old 04-18-2018, 07:40 AM
Senior Member
 
classiccat's Avatar
 
Join Date: Mar 2014
Location: Albany, New York
Posts: 1,577
Post Thanks / Like
Thanks (Given): 181
Thanks (Received): 164
Likes (Given): 1742
Likes (Received): 399
Quote:
Originally Posted by crazzywolfie View Post
i don't know. i haven't looked yet but i figure it wouldn't be too hard to convert it to a single shaft engine if it does have a dual shaft engine. the 208cc engine already has pulleys on it plus i also still have a few spare pulleys from a 10hp engine that i took some off of.
The main challenge to overcome is the speed & direction change... the cam output spins 1/2 as fast as the crank output and in the opposite direction... some traction assemblies are more accommodating than others when it comes to the necessary modification(s). If there's a will, there's a way!


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
('72 Sears 3520)

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
('89 Toro 824)

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
('70 Allis-Chalmers Tracker-7)

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
('80 Toro 724)

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
('95 Ariens ST724) --> Sold

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
('71 Ariens 910965 SnoThro 524)
classiccat is online now  
post #6 of 16 Old 04-18-2018, 08:58 AM
Senior Member
 
tpenfield's Avatar
 
Join Date: Feb 2015
Location: Massachusetts
Posts: 1,054
Post Thanks / Like
Thanks (Given): 48
Thanks (Received): 58
Likes (Given): 131
Likes (Received): 199
Garage
The Powermore (MTD) 208cc is about 6.5 HP. The 8.5 HP engine is probably a 318cc. So, I don't think the 208cc will be quite as powerful as the 8.5 hp, considering it probably has 50% more cc's.

Regards, Ted
.
Current & Past Fleet:
2017 Husqvarna ST224 (SOLD)
2014 Troy-Bilt 2410 w/ Briggs & Stratton 305cc Engine
2003 Ariens ST824LE (SOLD)
1999 Toro PowerShift 824 w/ 318cc OHV Tecumseh Engine
1988 Toro 521 w/ 212cc Predator Engine
1985 Toro 3521 w/ 179cc Powermore Engine (SOLD)
tpenfield is offline  
post #7 of 16 Old 04-18-2018, 09:31 AM
Senior Member
 
JLawrence08648's Avatar
 
Join Date: Jan 2017
Location: Lawrenceville NJ
Posts: 2,180
Post Thanks / Like
Thanks (Given): 91
Thanks (Received): 183
Likes (Given): 70
Likes (Received): 420
Garage
I have the exact sane machine excerpt mine is a 10hp/29" .

It's a single shaft machine with pulleys for the drive and auger. I think the OP was confused between the difference between dual shafts and dual pulleys on snowblower engines.

I have bogged down my 10hp on a 29" so putting the 208cc OHV on a 27" will be similar. I'd keep what you have and install a slippery plastic inside the impeller area and chute, and an impeller kit; or go with a 10hp flathead, what you have now; or go with a OHV 250cc-300cc engine.

I find your levers to be uncomfortable. To combat that, I keep the spring tension light, and use a plastic spring clamp to hold the auger lever down. I would also read my recent post on increasing the size of your rectangular exit chute at the impeller, that will reduce the bogging. I just did that a few weeks ago and looking forward to see how well it worked.

1986 Ariens ST522, 5hp, 22"
1995 Murray Craftsman 10hp, 29" w. 12" impeller
A 1983 Real John Deere 10hp, 32" w. 12" impeller, 16" auger, 20" high front, cast iron gear box, chains
Noma 9hp, 27" w. 12" impeller
Noma 5hp, 24" w. 12" impeller, 20" high front
Gravely Convertible, 12hp Kohler cast iron, 26" width, 600 lbs of cast iron & steel, 2 speed impeller, 4 ground speeds
Dynamark 8hp, 26", 12" impeller, for sale
Several other 5hp, 8hp, several 2 cycle, all for sale
JLawrence08648 is online now  
post #8 of 16 Old 04-18-2018, 10:14 AM
Moderator
 
Join Date: Mar 2011
Location: Minnesota
Posts: 2,632
Post Thanks / Like
Thanks (Given): 4
Thanks (Received): 142
Likes (Given): 14
Likes (Received): 330
Just for 'discussion', I have a 291 CC clone (VCT if I remember right) that lists it as a 10HP. One big thing to watch though is what the engine will contact on the machine. I dropped it onto the Searsasaurus back in January when it threw a rod. If I had had more time I might have tried to mount it, but with too much snow coming I just found another TEC 10 HP and put that on instead.


In looking at different clone engines, the VCT looks similar to a Subaru, which appears wider than some of the others like the HF Predator bigger ones. Being you have another engine already, it's easy to check but if you need to buy one then that can be important in your purchase decision.


By the way, IIRC that blower chassis uses a single shaft motor which would make repowering it a lot easier than if it had a twin shaft on it, long as you can work around any interference issues between the motor and the chassis.
HCBPH is offline  
post #9 of 16 Old 04-18-2018, 11:48 AM Thread Starter
Senior Member
 
Join Date: Jun 2014
Location: Ontario, Canada eh
Posts: 1,094
Post Thanks / Like
Thanks (Given): 3
Thanks (Received): 55
Likes (Given): 61
Likes (Received): 188
Quote:
Originally Posted by JLawrence08648 View Post
I have the exact sane machine excerpt mine is a 10hp/29" .

It's a single shaft machine with pulleys for the drive and auger. I think the OP was confused between the difference between dual shafts and dual pulleys on snowblower engines.

I have bogged down my 10hp on a 29" so putting the 208cc OHV on a 27" will be similar. I'd keep what you have and install a slippery plastic inside the impeller area and chute, and an impeller kit; or go with a 10hp flathead, what you have now; or go with a OHV 250cc-300cc engine.

I find your levers to be uncomfortable. To combat that, I keep the spring tension light, and use a plastic spring clamp to hold the auger lever down. I would also read my recent post on increasing the size of your rectangular exit chute at the impeller, that will reduce the bogging. I just did that a few weeks ago and looking forward to see how well it worked.
i know the difference between a single shaft and dual shaft output. that little 5/23 craftsman has a dual output. i got the manuals and everything for the 8.5/27. i just have it parked at my sisters place behind my summer car so i haven't really got to look at it too good. i was more worried about if that 208cc engine had enough power to really run the machine. i know my 26" machine has a 257cc B&S engine and it really don't bog much at all.

i might do the impeller mod if i keep it. like i sad have not really looked it over too well yet. i main like the handles on them. it is not that i really find the handles regular snowblowers uncomfortable. i still might try keeping the spring tension light like you said but with the way i was running my blower the other day i ended up with a pretty good blister. i think if i had a handle like the one on the craftsman machine it might not have happened. i am pretty sure i read the thread about the rectangle exit chute and opening it up. it was another thing i was going to put on the list of things to do even tho i likely won't really get to use this blower till next year.

thanks for the input. i might stick to my original plan and stick the 208cc engine on my 20" blower and maybe just use the craftsman as is.

arien 520 snow blower 6.5hp swap
yardworks 31AH6WKF515
crazzywolfie is online now  
post #10 of 16 Old 04-18-2018, 10:01 PM
Senior Member
 
Join Date: Feb 2015
Location: Ashland, MA
Posts: 296
Post Thanks / Like
Thanks (Given): 14
Thanks (Received): 8
Likes (Given): 49
Likes (Received): 46
Sure, replacing an engine with something larger (HP) makes sense. I did get mixed up reading the posts here so I am not sure if the replacement the OP planned to use was larger or smaller, I think it was smaller.


The point that I wanted to make pertains to fuel consumption that the OP was striving to improve. What would one gain doing that? Heck gas is under $3 now even with the current higher oil prices in affect. So Making a change for improved fuel efficiency in a snowblower baffles me. And something I do remember well from my younger years...if it ain't broke, don't fix it.
foggysail is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Snowblower Forum : Snow Blower Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome