Rebuilding a go-kart for a friend, advice/pointers would be great.

YetAnotherHobby

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I've mostly ever worked on bigger vehicles, usually Jeeps. Never before have I worked on a go-kart but the skills are the same either way. This is a project kart that I'm taking on to teach a friends youngest kid to cut his teeth on as an introduction to the automotive mechanic world he's determined to get into.

For starters, they got it second or maybe even 3rd hand not sure on details. It was running about a year ago when they initially got it but one day it just stopped. Since then it sat under a tarp in their driveway. Far as I have been able to figure out through some digging is that it is a Yerf-Dog Spiderbox. It has the standard 150cc Howhit engine still installed but it looks as though the Carb was replaced at one point more recently given that it looks cleaner than the rest of the engine. The air cleaner that sits above the engine is missing entirely and as I've torn the thing down bit by bit it looks like perhaps there was a short in the ignition system (if I'm understanding the diagrams right).

On top of that issue and as I've been taking stock of what all needs fixed/replaced I've hit some speedbumps. The main one currently is that I can't seem to track down a new/used rack and pinion setup for this particular model. The one that was on it looks rough but it still functions well enough far as I can tell. It certainly needs new tie rod ends though. I've been collecting a word file of parts and such that I will be replacing and that one item in particular is proving to be elusive. If anyone knows where I might find one that'd be great cause currently I'm looking at whether or not I can salvage the old one.

As stated, I've never worked on go-karts before. Given this, I know very little about them outside of the normal mechanical knowledge I have. If anyone has information, tips, experience, or useful information on how to repair/upgrade this clunker without delving too far into sunk cost would be greatly appreciated.
 

BaconBitRacing

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Welcome to the forum. Go karts are a great way for people to learn for larger vehicles. We have a few members with 'dogs, and some experts on that style of engine. Seeing as you've worked on cars and trucks, you know go through all the basics like oil change, check for spark etc.
 

YetAnotherHobby

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Welcome to the forum. Go karts are a great way for people to learn for larger vehicles. We have a few members with 'dogs, and some experts on that style of engine. Seeing as you've worked on cars and trucks, you know go through all the basics like oil change, check for spark etc.
Thanks for the welcome. And yeah, I figured starting on small engines would be best. I started on a V6 Ford, learned the hard way. LOL Yup, basics are being cared for here shortly, luckily the engine isn't seized so got that going for us. Needs a new plug for sure though, this one looks as old as the kart and looks like it could be cracked, plus the plug wire is in bad shape. Its getting a lot of new parts as I find them.
 

BaconBitRacing

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Thanks for the welcome. And yeah, I figured starting on small engines would be best. I started on a V6 Ford, learned the hard way. LOL Yup, basics are being cared for here shortly, luckily the engine isn't seized so got that going for us. Needs a new plug for sure though, this one looks as old as the kart and looks like it could be cracked, plus the plug wire is in bad shape. Its getting a lot of new parts as I find them.
Ford V6? You coulda started on something a bit easier, Chevy 350 or something else pushrod V8. But singles are best to start with. Y'all have fun and good luck, sometimes the wiring on those is a bit frustrating. A good multimeter and some patience should sort that out.
 

rd1970

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You could try BMI karts for a rack or anything else you might need not sure where you are located but they ship as well
 

YetAnotherHobby

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Nice. My xjs a 01. 35s, 3link front, locked front and rear. Have a 8.8 and 30 with 4.88s waiting to go in.
Close to the same, mines on 35's as well, its got the ZJ rear swap and the WJ front Akebono brake/knuckle swap. Its running an Iron Rock Critical Path 6.5" long arm kit, as well as a bunch of other stuff like steel bumpers and the winch and such. You know. All the bits that make you wonder why your constantly out of money. LOL

I miss my MJ though. Always wanted a Comanche. Got one, fixed it up all nice. Then got a job further away on a big highway so went commuter car. Couldn't bear to watch it sit while I was at work all the time so sold it to a collector. Jeep was essentially in nearly perfect original condition.
 

Hellion

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I love and hate being a stickler for terminology but that thing is NOT a go kart, at least in the traditional sense.

That is a "buggy" or hybrid-ATV. Go karts are simplest in the extreme; usually just a low-to-the-ground flat frame, no cage, no suspension, no key start, no wiring except for lights (if that) and a kill switch.

If you were trying to get a youngster involved in the hobby of karting that is the style of "go kart" I would start off with.

However that thing is complex enough to start a neophyte on the way to the study of auto mechanics if that is your goal. I can already tell that thing is a mess with the household style wire nuts and other "Bubba-fication" in evidence. Good luck! (y)
 

BaconBitRacing

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I love and hate being a stickler for terminology but that thing is NOT a go kart, at least in the traditional sense.

That is a "buggy" or hybrid-ATV. Go karts are simplest in the extreme; usually just a low-to-the-ground flat frame, no cage, no suspension, no key start, no wiring except for lights (if that) and a kill switch.

If you were trying to get a youngster involved in the hobby of karting that is the style of "go kart" I would start off with.

However that thing is complex enough to start a neophyte on the way to the study of auto mechanics if that is your goal. I can already tell that thing is a mess with the household style wire nuts and other "Bubba-fication" in evidence. Good luck! (y)
IMG_6695.jpeg
Traditional go kart. Rusty, ugly, and engineless, yes, but it’s mine. ‘Bout as simple as it gets.
 

Hellion

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Aha, the famed Ken Bar S-465 Streaker "The Rebel".

I have one just like it (and in about the same condition) albeit mine has larger rear wheels, a factory variation. 13 x 5.00-6" tires on the front and 15 x 6.00-6" tires on the rear. Incidentally, the actual front tire height is about 12" and the rear tire height is about 13.5". Tire makers never get it precisely right and you have to check when calculating your highest attainable speed with sprocket tooth count and the driven tires' diameter, but I digress blah, blah blah.

 

BaconBitRacing

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Aha, the famed Ken Bar S-465 Streaker "The Rebel".

I have one just like it (and in about the same condition) albeit mine has larger rear wheels, a factory variation. 13 x 5.00-6" tires on the front and 15 x 6.00-6" tires on the rear. Incidentally, the actual front tire height is about 12" and the rear tire height is about 13.5". Tire makers never get it precisely right and you have to check when calculating your highest attainable speed with sprocket tooth count and the driven tires' diameter, but I digress blah, blah blah.
It's a little short, but that's par for the course. Going for "resto mod" no flag, red paint, Predator, black wheels and accents. I'm hijacking at this point... might as well finish... first kart project so I'm not expecting perfection. Picked mine up for $200, with a crappy Clinton 3.H.P. how much was yours? So we don't hijack you can respond on my build thread.
 

Hellion

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Alright, there's too much hijacking going on, even by the OP! :LOL:

Back to the topic, how goes the project? Did you check out BMI Karts? A LOT of parts are available--I'd buy all you need and then some because Yerf Dog is gone, dead and defunct.... https://www.bmikarts.com/Spiderbox-Series_c_165.html

Rack and pinion with rod ends for Yerf-Dog Spiderbox, Part number 05635. $72.95---ouch, what an expensive hobby.

Also found another source; says "We manufacture our BDX line of products for the Yerf Dog Spiderbox right here in the USA in our facility in Virginia" : https://bdxperformance.com/collections/yerf-dog-performance-parts-and-kits
 
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