`
OldMiniBikes.com Home Page Vintage Mini Bike Forum Vintage Mini Bike Pictures
Register Members List Calendar Search Today's Posts Mark Forums Read

Go Back   OldMiniBikes.com Forum > General > Engines and Modifications > Briggs & Stratton Engines

Become a Supporting Member of OldMiniBikes.com today and enjoy less advertisements, unlimited photo hosting, and many other benefits listed on this page. Supporting Memberships help pay for bandwidth costs, software upgrades and the time that goes into this site.





Reply
 
Thread Tools Display Modes
Old 08-26-2011, 04:30 AM   #1 (permalink)
Member
 
firefighterbyrd's Avatar
 
Join Date: Aug 2011
Location: ga
Posts: 64
iTrader: (0)
3.5 hp briggs hop ups and mods

Hey guy i have a 3.5 horse b&s on my bike and the motor is fairly new and was give to me and im just wondering if anyone has any tips or tricks internal or external to gain any extra hp or speed im not experienced in tearing a small engine all the way down and i really dont want to sink a bunch or money in it but theres always small thing that can be done to improve performance so any advice would be greatly apreciated thanks guys
firefighterbyrd is offline   Reply With Quote
Old 08-26-2011, 01:59 PM   #2 (permalink)
Trainee...
 
minibikin''s Avatar
 
Join Date: Aug 2007
Location: Pennsburg, PA 18073
Posts: 5,641
iTrader: (65)
Most mods that apply to a 5hp Briggs would apply here. See the sticky at the top. Good luck.
__________________
Bonanza STEP-Brotherhood??
minibikin' is offline   Reply With Quote
Old 08-26-2011, 03:33 PM   #3 (permalink)
Member
 
firefighterbyrd's Avatar
 
Join Date: Aug 2011
Location: ga
Posts: 64
iTrader: (0)
thanks man
firefighterbyrd is offline   Reply With Quote
Old 09-03-2011, 01:32 PM   #4 (permalink)
Member
 
firefighterbyrd's Avatar
 
Join Date: Aug 2011
Location: ga
Posts: 64
iTrader: (0)
well i finally tore the 3.5 down and ported the intake and exhaust and polished the exhaust the best i could made a new header pipe for it and it runs so good now the carb cant keep up with the motor its a preset carb with no a/f mixture adjustment so im looking for a 5 hp tank and carb because my block has the extra hole that im told is for other carbs to bolt up so i cant wait to get more fuel to it to see what it will really do
firefighterbyrd is offline   Reply With Quote
Old 09-04-2011, 03:19 PM   #5 (permalink)
Member
 
Join Date: Jun 2010
Location: Ny
Posts: 69
iTrader: (0)
The 5hp pulsa jet carbs SUCK! look for a 3hp flo jet carb they are much better!
MassD is offline   Reply With Quote
Old 09-04-2011, 07:36 PM   #6 (permalink)
Member
 
firefighterbyrd's Avatar
 
Join Date: Aug 2011
Location: ga
Posts: 64
iTrader: (0)
Quote:
Originally Posted by MassD View Post
The 5hp pulsa jet carbs SUCK! look for a 3hp flo jet carb they are much better!
can you send me a pic of one, i may have the carb your talking about off my old 3 horse just needs some work to fix some pits in the tank so i was gonna hold off on fixing it to try the 5 horse setup but if it will be better than anything else and run the motor well ill fix it up asap
firefighterbyrd is offline   Reply With Quote
Old 09-05-2011, 10:10 AM   #7 (permalink)
Member
 
Join Date: Jun 2010
Location: Ny
Posts: 69
iTrader: (0)
MassD is offline   Reply With Quote
Old 09-05-2011, 02:11 PM   #8 (permalink)
Member
 
firefighterbyrd's Avatar
 
Join Date: Aug 2011
Location: ga
Posts: 64
iTrader: (0)
alright thank you massD ive seen carbs like that but i referred to them as a updraft carb had no idea it was the flo jet but i have one and wonder if it will work cause the one i have is on a 8horse that my father in law give me and i was talkin to my buddy last night and hes wanting to put a z50 honda slide carb on it that he has as a spare and just make an adapter so thats my options what do you think clean and put on the flo jet thats sat in the weather for about 10 years which isnt a problem or try the z50 carb???????
firefighterbyrd is offline   Reply With Quote
Old 09-05-2011, 02:22 PM   #9 (permalink)
Member
 
Join Date: Jun 2010
Location: Ny
Posts: 69
iTrader: (0)
ive heard that the 8hp carbs dont work well and not to use them so try the z50 out!
MassD is offline   Reply With Quote
Old 09-05-2011, 03:08 PM   #10 (permalink)
Member
 
firefighterbyrd's Avatar
 
Join Date: Aug 2011
Location: ga
Posts: 64
iTrader: (0)
alright man i will and i will post pics of the finished product i think it will look awsome and i hope it works right im ready to fab the custom intake adapter
firefighterbyrd is offline   Reply With Quote
Reply

Lower Navigation
Go Back   OldMiniBikes.com Forum > General > Engines and Modifications > Briggs & Stratton Engines

Tags
3.5 horse briggs

Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Forum Replies Last Post
Most worthwhile Briggs 5hp mods... ryan68bug Briggs & Stratton Engines 25 04-17-2013 10:03 PM
Cheap 3hp Briggs Mods Clayon Briggs & Stratton Engines 10 05-02-2011 12:38 PM
briggs mods smoke Engines and Modifications 4 02-23-2011 11:51 AM
briggs 8hp mods? bearpawgraphics Briggs & Stratton Engines 5 11-11-2010 07:25 AM
8 HP briggs rebuild and mods jmh587 Briggs & Stratton Engines 2 11-05-2010 04:11 PM


All times are GMT -4. The time now is 12:12 AM.
Style Developed by Andrew Slane

Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO 3.3.2 Copyright 2006-2011 OldMiniBikes.com / OMB Group LLC
Contact Us - OldMiniBikes.com Forum - Archive - Top
no new posts