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

 

 17.5 OHV Performance

Go down 
2 posters
AuthorMessage
WayneTrain2000
Member
WayneTrain2000
Member


Age : 22
Join date : 2019-11-16
Points : 1886
Posts : 80
Location : Augusta, GA

17.5 OHV Performance  Empty
PostSubject: 17.5 OHV Performance    17.5 OHV Performance  Icon_minitimeDecember 22nd 2019, 9:14 pm

My 17.5 OHV needs a new carb, it runs really lean and i’ve broken the mix screw. So I’m wanting to go ahead and upgrade while i’m at it.

What are my options for a better carb? I’d like a Mikuni clone but don’t know what size I’d need.

Thanks
Back to top Go down
fatboy_dan
Member
fatboy_dan
Member

2022 Build-Off Entrant
2022 Build-Off Entrant

Age : 47
Join date : 2019-05-13
Points : 2087
Posts : 81
Location : Lone Pine, Washington

17.5 OHV Performance  Empty
PostSubject: Re: 17.5 OHV Performance    17.5 OHV Performance  Icon_minitimeDecember 23rd 2019, 1:37 am

diameter = sqrt( disp ) x 2. sqrt being square root. that's a 31ci as I recall, so 507cc give or take. rounding down to 500 (close enough) square root is 22.3 and some decimals. x2, rounding again, 44-45mm should be fine, could even go down to a 40 with jetting. Will need tuned of course, but will be in the ballpark
Back to top Go down
 
17.5 OHV Performance
Back to top 
Page 1 of 1

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: