Go karts anyone?

[racer]

yesterday i scored a yellow jacket go kart for $75 bucks. the engine runs but needs to be cleaned before doing so, and it all there except a clutch and maybe a new chain. but im wondering, does anyone here have something like it?

 

its fully suspended with a shitty design a-arm front and a swing arm rear. right now it has just coilovers. nothing special, just springs riding on some shafts. however, I have already come up with some replacment equipment. for the rear i , uhh, found the stock rear shock off of an '03 cbr600rr. so that way ill have some more travel as well as full adjustability, and if i play my numbver right ~10in of travel . for the front i came up with another set of oil filled coilovers but im not sure what they go to. but anyways, if i find the right parts for the damn thing im thinkin itll be pretty cool. plus the motor has a high compression head and possibly a cam.

 

down to the point: does any one have any knowledge as to how to hop up briggs and stratton motors? i know they do it for jr dragsters, but i need reliability. no 1/4 miler here, i wanna bash some fuckin terrain.

 

anyone?

Edited June 16, 2005 by gimmeabeer

[racer]

i cycled 8inches on the first try. then the fucker broke damnit. bump.

[MudSlinger09]

shit man , the only way i can think of to make a brigs faster is to put a banshee motor in haha

[dirttrack25]

Buddy had a kart that his dad built..thay had some racing briggs engine on it maybe? forget what its called though..Its no longer on the kart though his dad recently built a mini chopper and put the motor on that.. I know that bitch rips but I think its stock

[RNBRAD]

Lets go to Little Sahara and I'll pull you around. It'll be a good time I promise. Oh and BTW, wear some good goggles and maybe a breathing apparatus.

 

Seriously though, I don't know jack about brigg motors other than they can cut some grass.

[rptorman]

I've got 2 Outlaw cage karts sitting here right now. One has a built Briggs in it. For a good well built Briggs you could pay upwards of $3000 for a race motor. I'll see if I can dig up some info for ya. Try a search for Briggs & Stratton Raptor III Motor. That's a stock race motor.

[rptorman]

Try apskarting.com

[racer]

. For a good well built Briggs you could pay upwards of $3000 for a race motor.

382398[/snapback]

FUCK THAT. if i was gonna dump 3 g's into id buy a yz85 motor and spend the rest on fox or king shocks. however, it turns out that a tech at the shop i work for is briggs certified and hes says you can tune them well enough simply to not need aftermarket parts.

[racer]

ok here is what i have so far, nothing ordered yet, i need to finish chassis work.

 

the mods i saw to make mucho rpm (for a lawn mower) were very simple, and equally cheap. you start with removing the governor. this takes the revs from 3600-4000ish to around 5000-5500, depending on your blocks condition. from then one would move on to heavier valve springs ($12 per set) to keep the valves from floating, as well as an enlarged oil dipper ($10) for better lubing. the springs arent necessary though. since i am dealing an older style flathead motor, floating valves does not mean bent ones, a good thing. it merely mean the motor will no longer rev for the obvious reasons. the super-duty springs keep the valves stuck to the lifters better and thus push the rpms up there a bit more.

 

this brings us to the next weak link, the piston rod. at this point rods start to warp or break, time to employ H-beam technology. CNC billet rods, in "H" or "I" configuration range from $45 to $75, that is super cheap. at this point its cost prohibitive for me to build any farther. but rest assured ill be wiring a tach ASAP, to record actual results.

 

now we are running lean, with the help of a uni filter and 12inch dumped header. for that im looking into slide type motorcycle carbs. my buddies at the shop build xr50's and have many spare carbs leftover from high perf replacements. some time next week i hope to be machining my intake manifold to adapt the two. from then on i am going to TRY to tune it with the exhaust gas monitor at work. the problem being its designed for big street bikes, but it may work. if i cant get the power or jetting i want with the xr50 carb, up ill move. the next size i see fit is an xr100 carb. the builders i spoke with recommended a 125 4stroke unit, but they are also building more than a mild motor.

 

does it really seem that simple? or am i missing something? i like to think that im not, however speed is never cheap. give me your thoughts guys, i need to have everything into account before i make my intake, maybe itll save me some lathe time.

[rptorman]

If you want gobbbbbbbbbbbbbbs of power for cheaper than the built Briggs, do what I did and put a 2 stroke dirt bike motor in it. I put a YZ250 motor in mine and holy fuck, hold on to your diaper cause you'll need it. Some of the guys here are putting 500cc 2 strokes in them. These will do wheelies, gaurinteed. I used to have a vidio of a kart with a GSXR motor on it. I'll see if I can find it again.

[rptorman]

If you want gobbbbbbbbbbbbbbs of power for cheaper than the built Briggs, do what I did and put a 2 stroke dirt bike motor in it. I put a YZ250 motor in mine and holy fuck, hold on to your diaper cause you'll need it. Some of the guys here are putting 500cc 2 strokes in them. These will do wheelies, gaurinteed.   I used to have a vidio of a kart with a GSXR motor on it. I'll see if I can find it again.

383662[/snapback]

I don't know how to do a link. Go to milkandcookies.com

Do a search for gixxer kart. It's awsome.

[neilgf]

http://gprime.net/video.php/gixxerkart

[rptorman]

Thank you, I'd love to drive that mofo.

[mybadbanshee]

i could see myself gettin hurt on that bitch!

[racer]

oh wow. ok not that much power. thats just rdiculous. ill post up my motor specs when i get it completed. and im gonna get a digital tach from work so that will show my rpm improvements.