5hp flathead on yerf dog 3203

[exit9teen88]

hi, I bought this kart 2-3 years ago and the engine blew aweek later so it's been sitting ever since. I got a 5hp Briggs flathead with minor work done to it like smoothed and polished intake and exhaust ports, polished carb inside and out filed the carb alittle to look billet ( adds 5hp LOL), strait pipe, no govenor, this is just the start. it has a max torque 3/4" #41 10 tooth clutch with a 60 tooth axle sprocket. 6:1 that's a good ratio. I was told this setup would be sh!t by the guy who works at the shop I got the chain from. can I get some of your opinions about this? has anyone one done this?

 

[solomon]

First off, you shouldn't polish the inside of the carb or the carb port, it throws the mixture off and reduces fuel flow. Depending on the size of your tires it is probably fine, assuming it is stock. I would get a 12th clutch though

 

[exit9teen88]

I only used a little metal polish on it no sanding or anything. the tires are stock( 18" tall)
can't I just get a cltch sprocket and swap it instead of buying a new clutch?

 

[Kaptain Krunch]

Getting a 12t clutch would not help, that would get you a higher top speed and lower torque.

With 18" tires your going to want a much lower ratio then 6:1, i'd say at least 8:1.

Intake should be slightly rough, exhaust should be smooth.

 

[solomon]

well he didn't mention if he wanted more speed or more acceleration. I always assume speed, that's why i recommendeded a larger clutch sprocket. U may be able to get another sprocket for the clutch