Briggs 5hp

[zeek3435]

whats goin on, i got a racing go kart...i got a 5hp fun power motor...i got a racing header and a K&N air filter..any suggestions on makin this thing go faster? im thinkin a high perf carb but i heard if u do any crazy modification to this motor it will blow..let me no

[Wgoodrich]

The engine has a govenor set to prevent distruction of the engine due to too much rpm. You can push the issue a bit but too much and yes it will blow.

Better yet decide the speed you wish. If take of to top speed like a drag race is the issue change the gear ration on your drive from your axle. This changed to a lower gear ratio will create a faster take off.

If you wish high end speed then change the same gear the other way to a higher grear ratio. Diameter of the sprocket changes. Smaller sprocket will make it take longer to get to top speed or larger to get to top speed faster but the top speed will be slower.

If you need both then consider two sprocket manual change while in motion much like the different gears on a bycicle is done.

Be careful and use solid judgement. The answer is in your gears not the rpm of your engine. Size the horsepower as needed depending on the type gear set up.

There also is on the market a V belt drive design that changes the V of the pulley making the pulley get tighter making the belt move to the outside of the pulley when top speed but inside the pulley when taking off. This also can be manually controlled by the driver.

Just some ideas.

Wg

[4CYCLE]

There are many things that can be done to your engine. The question is, how long do you want your motor to last? Some things that can be done: Pull out the governor, install a high performance camshaft, high flow carb, head ported and polished, valve springs. If you are using the kart for a fun kart, you need to be careful with what you do. Most of these mods are for short run karts, and not running hours on end. If you do pull the governor, I strongly suggest you install a tachometer to see how many rpm's your running. Check out the following website for much info.
www.4cycle.com

[zeek3435]

thanks alot man. ill c what i can do