Forced Induction Go Cart

[fastwhipyo]

aight for real, I need some help on this one. I am doing a science experiment for physics class that has to do with makeing more HP out of my Go cart. It is a 12 HP brigg's and stratton carborated engine. I already calculated it out and at 2000 RPM's I would have to move 3.5 L of air per second to even boost the engine at all (3.3L is what the engine would draw on its own). I was planning on rigging two air pressure tanks (the portable ones that weigh like 10 lbs and you have to fill them up with an air compressor) and rigging up something with the air intake to handle "boost" (i am gonna seal off one end and seal the two ends of the tank's hoses to the air intake). Then once I got the gocart moving I would reach up (the tanks would be mounted on top of the role cage) and turn on the tanks one at a time while the gas was floored to get some boost out of it. My question is, do you think this would actually make a noticable amount of difference if I could manage to put around 4L of air per second through the sysem? and would it still work with a carborated engine??? Im not real sure how carborators handle boost. 4L of air per second is quite a bit and Im not even sure that two air tanks that size can move that kind of air....what do you "forced induction" geniuses think about this one???

[Xracer729]

well, no fi genious but i thik the air from the tank would run out way to fast for it to make and signifcant difference for more that a few seconds. if nothing seems to work thers alwasy NO2!!!:)

[Tony01Gts]

Hell yeah NOS GO CART

[fastwhipyo]

haha, ya nos go carts are tight or whatever but Im pretty sure my 12 hp motor would blow up with anything more than an 8 shot, haha. And i dont think they make one. Yes I know that the air would run out within seconds, but thats all it will take. See, the experiment will be me dragging the go cart down a 100 yard strip in my field, so im only looking to use it for maybe 8 seconds or so because once I get it up to speed it really wont matter much after that (the clutch will only go as fast as the engine will spin....so extra hp wont help, only extra RPM's). Im gonna time myself and if I can make a noticable difference in times it will get me an A and be funny as ****. Im guessing it will do like a 15 second 100 yard dash so maybe with FI it will pull a 13 sec pass....hehe. If I do it I will post the results....should be interesting too see......the engine blow up, hehe.



If it works out maybe I can rig something up with some super high pressure tanks and boost the **** out of an old riding mower to see how much power it can handle before going kabloowee. Ill get that little bitch up to like 60HP and do a huge burnout down my driveway...haha.

[celicauk]

I reckon the pressure in the tanks will drop off so quick you won't get much out of it, also I presume you still have to feed in more fuel to use the air or it will be so lean it might not even burn, on that point the spark plug may not even be able to arc with that much air mass so you could also need to uprate the plug and fit a higher energy coil/CDI unit.

I think you should go with something similar to a nitrous rig but using air tanks instead, that way you don't need to get the jet size ridiculously small and you can meter in fuel too.

SOunds like a good laugh anyway, all under the cover of a science project ;)

[Deftech]

Carburators suck in the fuel through a jet based on the amount of air passing through. Look on the carb there should be a couple of screws that are labled "Hi" and "Low" these adjust the size of the opening for fuel at high and low rpm situations. If the size of the jet is big enough the additional air should pull in more fuel.

The setup you are going for is similar to the effect of a blower on an old muscle car. this funnled air from the forward movement of the car into an intake system that with the aid of belts from the crankshaft would compress the air, similar to a modern day supercharger. This increased air flow would then pull more fuel into the engine.

Another option would be to attempt to run the go-cart only on compressed air, no fuel at all. The compressed air should be able to move the cylinders in a manner similar to the standard ignition. Even possibly rigging a valve that opens and closed based on crank position and sending the air in through the opening for the spark plug. hmm so many options. Kinda wish I had a go-cart to play with now.

[Moistio]

hey man what about the sneeky pete by nos... check this out scroll down to it http://www.holley.com/HiOctn/ProdLine/Products/NOS/hiddensystem.html its only supposed to give a .2 second help on 1/4 mile but think about it on that go kart and it is made for carburated motors. Just a thought

[celicachick92]

HAHAHAHA
Are you gonna put type r stickers on it to?
hehehe jfwy.
It'll prolly blow up, because well, it's a go-cart.

[BrullenCelica]

whats up man! i race karts. not forced induction ones, but shifters and such....but i recall looking in one of my magazines years ago and seeing that someone actually makes a turbo for the kart, i'll have a look again, and get back to you!