All-Terrain Lawn Tractor Forum
Would you like to react to this message? Create an account in a few clicks or log in to continue.

All-Terrain Lawn Tractor Forum

Like riding lawn tractors through mud, woods, rocks, and snow? Then this is the place for you! Share your ideas, Post your projects and more!
 
PortalHomeSite RulesEventsFAQSearchRegisterLog inBuild-Off

 

 Which motor? and what to do?

Go down 
3 posters
AuthorMessage
Mow Money Mods
Member
Mow Money Mods
Member


Age : 45
Join date : 2017-08-16
Points : 2551
Posts : 124
Location : South Australia

Which motor? and what to do? Empty
PostSubject: Which motor? and what to do?   Which motor? and what to do? Icon_minitimeAugust 20th 2017, 6:50 pm

Gday to all, pretty new to the mower scene and currently building a Murray pan frame into an all terrain off road mower, it came with a 12 hp flat head briggs in it and I have a chance to purchase an 18hp opposed twin briggs also, thing is I have fitted a 12.5 oppy to it an physically it was too big to fit all what I intend down the track, alternator  for one as the top pulley conversion will not fit under bonnet etc etc.
So my question is what would peoples opinions be on these two options, would you go to the trouble of fitting the opposed twin and maybe bonnet scoop etc to fit and more modding, or would I get a good performer out of building the 12 hp flat head, it needs rings at the least and a head gasket.
I really wanted a twin and not scared to mod either, but would I be gaining much or should I just build the single stronger, is weight gain an issue, I have a quad bike double a arm front end with suspension also fitted to it. Also would like to remove the gov down the track and play with it a little. any help is appreciated and taken into account, cheers to all.
Back to top Go down
prancstaman
Veteran Member
prancstaman
Veteran Member

1000+ Posts
1000+ Posts!

Join date : 2015-02-02
Points : 4849
Posts : 1412
Location : Cleveland,Ohio

Which motor? and what to do? Empty
PostSubject: Re: Which motor? and what to do?   Which motor? and what to do? Icon_minitimeAugust 20th 2017, 8:19 pm

The 12 hp Briggs is plenty strong. Adding an alternator to the engine wouldn't be a big deal considering an alternator of any kind is self regulated and only puts a strain on the motor when you need power using something, other then that it is just idling any other time. But then again, no such thing as too much power with an oppey installed, LOL.
Back to top Go down
Mow Money Mods
Member
Mow Money Mods
Member


Age : 45
Join date : 2017-08-16
Points : 2551
Posts : 124
Location : South Australia

Which motor? and what to do? Empty
PostSubject: Re: Which motor? and what to do?   Which motor? and what to do? Icon_minitimeAugust 20th 2017, 9:47 pm

yeah I like the sound of the oppy's, the problem fitting an alternator to the oppy is it is physically too high to fit a pulley on top of to run an alternator, might need a bonnet scoop or similar to do so.
Back to top Go down
MightyRaze
Administrator
MightyRaze
Administrator

2017 Build-Off Finalist
2017 Build-Off Finalist
2018 Build-Off Top 3 Winner
2018 Build-Off Top 3 Winner
2019 Build-Off Top 3 Winner
2019 Build-Off Top 3 Winner
2021 Winner of Winners
2021 Winner of Winners
1st Place Build-Off 2022
1st Place Build-Off Winner 2022
10,000 POSTS!
10,000 POSTS!
2024 Build-Off Entrant
2024 Build-Off Entrant

Age : 48
Join date : 2016-09-06
Points : 14921
Posts : 10540
Location : Oklahoma

Which motor? and what to do? Empty
PostSubject: Re: Which motor? and what to do?   Which motor? and what to do? Icon_minitimeAugust 21st 2017, 12:04 am

They made a fan that would work well with an alternator I think.  This came off an 18hp horizontal.  I am sorry I do not have any more info like model and type it came from.  I think it is called a flywheel fan.  I think it is similar to the older starter/generator style engines too.  I wonder how an alternator would work vertically? It would fit a 1/2 inche belt. I was going to try it as a pull start since it was notched for that, but it was just too big to get a good pull.

Which motor? and what to do? Img_2197


Which motor? and what to do? Sig115PROJECTS:
     Marshal ........93 Craftsman GT6000      
     Red Bandit ...72 Wheel Horse Raider 12
     Dirty Rat........77 Sears Suburban
     Bowser..........01 Murray Widebody LT
     Other projects
Have a question? Ask me! Type in "@MightyRaze" in your post!
Which motor? and what to do? Sig214Which motor? and what to do? Sig314
Back to top Go down
Mow Money Mods
Member
Mow Money Mods
Member


Age : 45
Join date : 2017-08-16
Points : 2551
Posts : 124
Location : South Australia

Which motor? and what to do? Empty
PostSubject: Re: Which motor? and what to do?   Which motor? and what to do? Icon_minitimeAugust 21st 2017, 3:46 am

aha that would work I reckon, gearing might be an issue to overcome for correct charge rates but fitment would be cleaner, thanks for that idea mightyraze.
Back to top Go down
Sponsored content





Which motor? and what to do? Empty
PostSubject: Re: Which motor? and what to do?   Which motor? and what to do? Icon_minitime

Back to top Go down
 
Which motor? and what to do?
Back to top 
Page 1 of 1
 Similar topics
-
» Would a torque converter or a centrifugal clutch with a 12hp or higher motor be able to turn the tires at 15 mph without bogging down the motor?
» rear engine trans on reg mower?
» what is the best briggs and stratton motor for offroading?
» GY6 150cc motor?
» Im having trouble starting my 14 hp I/C OHV motor.

Permissions in this forum:You cannot reply to topics in this forum
All-Terrain Lawn Tractor Forum :: Technical Forum :: Engine Tech :: Briggs and Stratton-
Jump to: