Harbor Freight's NEW Ghost Engine Is For RACING USE ONLY *And I Have One*

[@spooge33]

I bought a vintage Margay kart with the "basic" Predator on it, for $350.00. I'm 6'1", 240lbs and did donuts with that thing until I snapped all the studs of the rear hub. Laughed my ass off as the tire went flying across the parking lot. BTW, I'm 61yrs old............going on 12.

[@themadscientest]

I managed to get many a bicycle rear tire down to the threads when I was a kid, and I'm still hard on rear or drive tires to this day, going on 30 but I have no plans to stop burning rubber!

[@jeffrunyan2691]

Lose some weight.

[@Yeer718]

How on earth did you find a margay for 350

[@plantfeeder6677]

@@Yeer718 well I bought mine in 1977.

[@nitro9452]

I am 17. I cannot tell you how many burnouts I've done. burnt multiple tires off of my dirt bikes, 4 whole (till they wouldn't hold air) 235/70/r15s on my 95 explorer, and I still see $10 in gas and $250 in tires as a fun ass time.

[@will2993]

I'm going to fit the ghost to my lawnmower. Harbor freight can't tell me what to do!

[@WatchJRGo]

Fastest lawnmower on the block 🏎

[@AgtWashingtub]

Gonna replace the predator in my wash set-up with a ghost.

[@InsideOfMyOwnMind]

@@AgtWashingtub Yeah, you'll blow the pump out then you can get a cart like he did.😂

[@AbbStar1989]

😁

[@racerx009]

Hey, didn't that engine come out of your buddy's Prius? ;)

[@Powermetaldaddy1974]

I helped out washing bikes at a Yamaha dealer when I was a kid. He had a go kart there with a motorcycle engine on it and racing slicks. Never saw it in operation but told it was deadly fast.

[@GG-to7qi]

IMPORTANT NOTE: There is no video showing JR using the supplied funnel to fill the new engine with oil. I suspect that he couldn't stand the shame.

[@TheBarberShopScott]

🤣🤣

[@m1t2a1]

They should have shipped him a proprietary bluetooth funnel.

[@sydecarnutz972]

Geez. He used a fancy "Motul" funnel off camera folks. Relax! ;-)

[@power2thepeople53]

Oh no!! I was thinking the same thing. No way they shipped it wet. Goofy

[@DanITGuy]

😆😅🤣😅😆

[@gttrailerracer4380]

As a old Carter Who drove 125cc rotax engines, put the real deal engine in and you get your pants and mind blown of, its scary. 120mph is no problems😁

[@spankthemonkey3437]

I used to do 90ish with a 5 horsepower Briggs and Stratton flat head engine. Those engines just needed a cam to perform decent really. But I had the small 3hp flywheel a 5 degree advance timing flywheel key for it, horstman I beam rod ss93 cam and a tilitson carb, beat alot of 4 wheelers back in the early 2000s

[@Boonexctf]

Yeah! If he had the original KZ 6 speed and 125cc 2 stroke, he could probably hit 130 with the correct ratio. The funniest part about this video is the fact that he thinks that he built himself a rocket ship.

[@alansmith4734]

Put an Exhaust Support on it STAT! Remember what happened to your Ariel Atom Exhaust! A bug hit my eye while I was Mountain Biking, and I got Pink Eye. Always wear Eye Protection.

[@davey6024]

Wow the difference between the two engines is night and day! She rips! Kartings such good fun. I think its being so close to the road, the heavy steering and being open to the elements that for me makes it more enjoyable than a track day.

[@blaydetroiani8563]

Right I'm buying the regular 212cc all day long

[@toddsummey4264]

⁴⁵⁵³

[@spankthemonkey3437]

​@@blaydetroiani8563yep and throw a cam light flywheel and billet connecting rod and you got this engine

[@genixia]

Used to race a Suzuki RM100 powered kart in UK Schools classes. We'd race at the same time as the Rotax engined karts that were then used in one of the adult national classes. On paper the reed-valved RM100 had more power (19.5HP) than the rotary-valved KA100 (18HP iirc), but those KA100 just screamed with a better torque profile. Direct-drive, bump-started in the pit lane, rolling start after a formation lap. Fun times and fast!

[@guykiphs]

Pro tip: When starting and warming up the kart, put a block of wood under rear to get the back tires off the ground. Time to come out to autocross!

[@OutKartnAround]

You got the right idea! I really hope to get more karts involved in autocross going forward. With fuel/tire costs so high for cars running a kart is the logical move :)

[@seanaskeland515]

With it having a fuel pump would you consider throwing a small turbo on it? That would be really cool to see

[@maxstone2566]

I put a Ghost on one of my karts just to see how they run, and they are great, but nowhere near the Box Stock Project (BSP) engines you build from ARC. One big concern is they still have the crappy flywheel that is just downright deadly. CHANGE to the billet flywheel from ARC !!! ... ESPECIALLY if you plan to defeat the governor and go above 6000 rpm. If you can't or don't want to build a BSP engine, these are the way to go. I REALLY like the muffler too... I bought a few of the kits so I could put the muffler from them on my other karts when we go to the parking lot to play. It really cuts the volume significantly and keeps the neighbors and cops off your butt.

[@noelvalenzuela4735]

Would you still recommend changing the flywheel if you weren’t going to increase the revs?

[@maxstone2566]

@@noelvalenzuela4735 I would change it, since I build my own engines and it isn't difficult for me. I know two people who are using these as practice engines for the 206 class (to save their precious LO206 race engines) and neither of them have changed the flywheel. They have run several practice sessions with them and no problems have occurred. HOWEVER, if one of these flywheels come apart, it could be really bad ! I have seen a Predator engine that had one explode and it was governed !!! ... but fortunately the engine was behind the seat on an offroad kart and there were no injuries. Hopefully, the Ghost flywheel is made better, but I would change it myself. I don't trust cheap cast flywheels right under my arm on a race style kart.

[@billymanilli]

@@maxstone2566 Couldn't agree with ya more man. That "ghost" is nothing more than an overpriced "gimmick" imho... I honestly can't believe they label it as a RACE engine and put that deadly flywheel on it, and also the same crappy rod that comes in a regular one.

[@BuzzLOLOL]

Think Ghost engine is electronically limited to low RPMs... and 3 times over priced...

[@maxstone2566]

@@BuzzLOLOL It is limited to 6100 to compete with the Briggs 206, but the Briggs is built MUCH BETTER than the ghost... side by side it is really obvious.

[@Cartier_specialist]

Good times. When I was a late teen me and a few friends bought a go-cart with a Tecumseh 5 horsepower engine and that thing was pretty fast. It would do 55 mph and it went through rear tires like nobody's business. I know I have a picture somewhere of it lighting the rear tire on fire.

[@JerryDLTN]

I also had one. I was using nitromethane (RC model airplane fuel). So much fun. The frame eventually cracked

[@connorbingel7134]

Me and a couple of friends want to make a kart as a summer project. We have a chassis and a motor but will have to build everything else

[@Deetroitmuscle]

I got a 8hp and I can't get past 35. Governor is gone too. How did you get 55?! Thats fast af.

[@SlightlyM3ntal]

@@Deetroitmuscle Check your sprockets. Larger sprockets will get a higher top speed but slower acceleration.

[@thameholland2769]

@@Deetroitmuscle Years ago now, but I raced an Oval-Rocket go-cart chassis with a 5HP Briggs and Stratton engine that ran methanol and without the restrictor plate(required until a certain age) we could easily do 100 mph...strive for that afterward!!! I still miss it and that was 20 years ago.

[@brianhiles8164]

_An additional thought:_ I would be quite interested to know if there is an aftermarket titanium connecting rod available for this engine (or any other one of this class). Reducing reciprocating mass has the greatest effect on acceleration and redline, although I suspect the crankshaft counterweight(s) would have to be modified as well. For that matter, for an engine of this power, connecting rods fabricated of carbon fiber should be feasible and (relatively) inexpensive.

[@MrPapakuka]

the pulse tube of the fuel pump is connected to the engine crankcase. As the piston ascends and descends the pressure in the engine crankcase transitions between positive and negative. The pressure differential can be greater than 8 PSI. As this pressure differential is transferred directly to the diaphragm, fuel pressures are nearly the same as the pressure differential of the crankcase

[@frederickgiordiano2105]

You can get any part you need from Go Power Sports. They even make cams and other upgrades for Predators, including a true Mikuni carb.

[@thecloneguyz]

My buddy works at Boeing He built a Go-Kart SIDE MOUNTED SEIKO 650 SOLID REAR AXLE 0 - 120MPH IN 2ND GEAR IN 5SECONDS NEVER HAD IT OUT OF 4TH AT 144MPH!

[@RemedialRob]

John Ross: "This thing runs great! Look at me do donuts!" Also John Ross: " I can't breathe when I'm in this thing! Seat's too small!" Watch JR Go: "I'm gonna :::huff::: can't breathe... I'm upgrading the engine! Narrator: "Buying a seat that he could sit comfortably into never even occurred to him..."

[@avioncamper]

JR is still "young"....

[@mcdonaldm73]

At least he has his priorities straight!

[@boredandagitated]

@@mcdonaldm73 power!!!

[@0NK3LS4T4N]

„I don’t want peace, I WANT TROUBLE!“ 🤣

[@johnhicks9529]

They make cable farells that are made out of brass with dual screws to tighten down on your existing throttle cables. For your conversion setups.

[@tedecker3792]

My last race kart was a fireball chassis with a McCullogh Mac8 engine. 100cc, direct drive (no clutch). It would do around 60 depending on gearing. That was in 1963.

[@williamlynnminyard3rd772]

Heck yeah!

[@edwhitson9873]

I was last racing in the late 80s early 90s , running flat head Briggs 130202,130232 in stock lite, and stock appearing. Tons and tons of fun. Btw, first running a margay chassis late th a bugg chassis

[@BuzzLOLOL]

In 1968 I built a street legal suspension minibike from scratch around a '55 Jawa 350cc 2 cylinder 2 cycle 4 gears motorcycle engine... the stereo sound of dual exhausts high pipes on a minibike is so kewl !!! As is the sensation of almost unlimited power...

[@transformationproject3583]

My friend used to pull my direct drive with his yamaha dirt bike to start it.

[@tedecker3792]

@@transformationproject3583 I was helping a friend start his kart, it would sputter and run then die. I got tired of running to catch up, so i jumped on the rear bumper and

[@100PercentJake]

Sounds like the small Wichita youtuber needs to pay a visit...

[@WatchJRGo]

Sounds like you need to stop by tomorrow 💯

[@Bicketybam68]

I'm betting there may be a line up after Gabe finds out about it. :)

[@nathanielmoore87]

Robot Cantina has been tinkering with Predator engines in a Honda Insight. He's up to 440cc with EFI and supercharging which has propelled the Insight up to 60mph I think. I'm not affiliated, but it's definitely worth the watch after you finish this vid of course. 😉

[@MasonAK.1]

He also recently moved to Kansas so there's a chance they'll meet by fate

[@fixyourautomobile]

Just shipped him two small turbochargers. We will see what happens! Lol!

[@jonathancorbett5917]

64mph with a 420cc

[@digital0785]

@@fixyourautomobile I'll be interested to see if he tries those over the stupidcharger

[@fixyourautomobile]

@@digital0785 In search of efficiency, it would be logical but only under the right conditions. Only way to know is to test. Curious myself.

[@Lochlan112]

One last thing I would like to mention, I have on tons of these setups and it doesn't look like you're getting full throttle at the carburetor. In other words have someone push the throttle pedal all the way and look inside the carburetor to make sure the slide is going all the way up. It could have been just a trick of the camera but still something noteworthy. I hate to be the bearer of bad news but you my friend but you have now stepped into another addiction problem, TRUST ME 🤣🤣

[@anangryoldman8469]

Yeah - I didn't think he was getting full throttle, either.

[@chark6490]

Was thinking the same thing

[@firstname6208]

Put a spring in the throttle cable assembly somewhere. That way you wont damage the barrel if you over pull the cable. Amazing briggs nowhere in site. They were the premier engine provider for decades. We were getting 10 hp out of wka box stock flat head engines 20 years ago. Billet rod, toss the valves and catch em on the back side of the lobe. We turned em 6800 all day, 7100 if it was a big show. 40-50 karts every class. $1000, $5000, sometimes $10k to win.

[@kerrylewis2581]

I had a race cart in the late seventies with a MCCULLOCH two-stroke engine, and that thing was fast. Like a dumb kid, I blew it up holding it wide open for far too long on a closed stretch of highway.

[@DirceuCorsetti]

I had a McCulloch weed Wacker and it was a beast. A bit on the heavy side, but low noise and no vibration. Too bad it broke the axle and for the price of a new one I just bought a new machine. Still have the engine though, not sure why since I haven't come up with ideas yet.

[@kerrylewis2581]

@@DirceuCorsetti Is McCulloch still in business? It's been years since I've seen any of their products.

[@glenncrockett4451]

My best friends brother also had two Mac powered racing carts, we weren't allowed to ride them but he got us a play cart to mess with. Another friend had one with the 100cc Yamaha race engines on it that he did well on some local tracks with it.

[@DirceuCorsetti]

@@kerrylewis2581 I honestly have no idea

[@firesurfer]

@@kerrylewis2581 "In January 1999, the company filed for Chapter 11 bankruptcy and sold its European division to Husqvarna AB. In October 1999, its North American operation was acquired by the Taiwanese company Jenn Feng Industrial Co."

[@btchhopperou812]

FYI- between the flange on the 45* intake pipe and the carb, USE an insulator to keep the carb COOLER for a much longer time. This will negate power loss from HEAT SOAK. Most of Honda's ATC's used them back in the 70's/80's- they were there for just this reason. It may not make a huge difference, depending upon ambient air temps, but when you are racing, that small HP gain may just put you on the podium(LOL) after an extended race.

[@unite4peaceonearth]

Isn't what your describing just a gasket?

[@btchhopperou812]

@@unite4peaceonearth No, it's actually a plastic insulator with o-ring to seal. Likely won't see many on present day ATCs being they used to get brittle and crack up, but they can still be bought in the aftermarket. ATCs used to run HOT too!

[@dentmastersofnymichael3316]

I have a customer who races those and never realized they were that fast. That is insane

[@je6017]

A glowing review "sometimes more reliable"

[@WatchJRGo]

Hey anything that can even be compared to a Honda is God tier. I can't give it any higher level of praise 💯

[@Bicketybam68]

You need to add a banana peel dispenser at the back. It's not a real kart without one. Also maybe consider doing a pull-start delete and start it with a drill.

[@koolaid53]

Or a shell dispenser?

[@dandahermitseals5582]

Those fuel pumps dont run off the exhaust pulse the sre diaphram pumps that are avtuated by the pulsing of the crancase volume being displaced by the piston's travel. Every snowmobile mechanic and Marine two cycle ( OMC etc) outboard motor mechanic Dandahermit

[@BattleGroundFab]

The Predator doesn't die in corners because of fuel starvation, it dies due to the low oil level sensor. If memory serves, it is a yellow wire on the front of the engine that you can unplug to solve the issue.

[@scootersonlyrepair510]

Exactly

[@nicolec7290]

Yes

[@jeffreystone7327]

Watched your video last night. Bought the Ghost this morning. Pretty nice little package. Thanks again for your video.

[@JK35280]

Ah, the fun that those of us who are 6'7" will never have.

[@GreatLakesLogger]

Only 6'2", but still applies. I'm happy to be a bigger dude, but it sucks sometimes

[@spikeblakemore]

wait wdym, i'm 6'7 what we missing out on

[@kindafunnyfatties]

You’re not missing out on anything lol

[@kindafunnyfatties]

Let me clarify. Just adjust it. Go karts are lit

[@droddy1972]

My son and I currently race karts throughout TX, LA, and OK. We race with a kid who is 6'5". It can be done. Just takes some seat adjustment and pedal extenders.

[@FreezyAbitKT7A]

Time to fix the Rolls, put a tow hitch on it and go down to Desoto/ Freedom Factory

[@mattneaderhiser4658]

This!

[@paladain55]

JR if you ever are priming dry engines its better to wet prime them. I usually just take a turkey baster and squirt a bit of fuel in the plug. Will usually get 2-3 revs and itll prime. Or a loose primer bulb. Put it on the end of the fuel line before the fuel pump and pull the fuel up a bit and put it back together.

[@Noneyurbusiness]

*A grown man saying jelly instead of jealous makes my skin crawl*

[@ryannejdl8510]

JR when you go to sit in the cart, just “think thin”

[@JimFlanagan4206]

Did you get the banana peel dispenser kit?

[@tei1337]

Have you seen the robot cantina videos where they put a predator engine in an Honda Insight? IThink they managed 55Hph with a (modded) 212. Apparently Jake met the guy.

[@rpavlik1]

Yeah and now they're running a supercharger on a 420cc predator.

[@tei1337]

@@rpavlik1 Yes, I've followed season 2. Also noticed they moved to the automotive hotspot of KZbin, Kansas. If I'm not mistaken, it's just northwest of Wichita.

[@Workingdad2380]

Great video I am an og subscriber and a minibike and go kart lover love that you are doing a small engine video we all are big kids at heart. Care and Cameras for all you gokart/mini bike videos.

[@m.cigledy6769]

I believe a bicycle derailleur cable should work for a throttle cable. A cheap one from Walmart has two styles of ferrule ends, just snip the wrong on off. Even comes with the housing.

[@ursirius4878]

6.5 HP for a racing motor. We used to put 2 stroke Ski Doo motors in go cart frames, couldn't keep tires on them but man what a ride.

[@BuzzLOLOL]

Yeah, in 1968 I built a street legal suspension minibike from scratch around a '55 Jawa 350cc 2 cylinder 2 cycle 4 gears motorcycle engine... the stereo sound of dual exhausts high pipes on a minibike is so kewl !!! As is the sensation of almost unlimited power...

[@mikeheadley8230]

D#

[@glenncrockett4451]

Dude you really need to build a Work Bench, always working on the floor has got to be a pita! Bicycle shifter cable has the length and end you need, I bought a kit for building custom power equipment cables almost 20yrs ago and the company has kits for different fields, Motorcycles,bicycles and others, many times I have used my kit to make weird cable set ups. When I was a kid I had a single seat single rear wheel drive go cart that I put a 5hp Briggs L head engine on, I used a Cast Iron Flywheel off a tiller on it, no Governor that did 60mph (speed checked by a 65 Mustang lol), I lived in a very rural area and I drove this thing on the roads just like a car lol, bet I put close to a 1000 miles on it. I broke and had the frame welded on all 4 corners from jumping it lol, chains would explode as soon as the wheels left the ground, god I had so much fun building and riding stuff when I was a kid

[@anthonyevans1891]

In searching for kart cables in the past had done the same thing, using a disk sander to bring the large cable end down to size, but like the man said, bicycle shifter cables worked perfectly and should be plenty long enough for just about every conceivable kart. Was great getting to see someone having so much fun in a kart. Nothing quite like flying down the road with your ass 3" off of the pavement. Even at 35mph, it seems like you're going 100. lol

[@kaostheory2940]

For your information if you need a throttle cable you can use a mountain bike derailleur cable it has the same small end on it I use them all the time on carburetors like that

[@savage3607]

Hell yeah custom made. Lol

[@damonwhite4579]

These things are cool, but you could build a way meaner engine out of the normal 212 for cheaper

[@FukTheGovernment465]

Yeah keep it a shifter kart...

[@yodasbff3395]

I once heard "he who dies with the most toys is the winner," and you are sure looking like the winner. 👍

[@ronporter610]

you should add a hard linkage for the throttle cable. There is too much slack in the cable so it wont be as responsive or accelerate to its max.

[@highspeed01]

pro tip for starting first time. since u have a vacume fuel pump u can take line off and blow in it to get the pump spinning to prime the lines and carb so u aint pulling your life away.

[@charleshadden8270]

It's literally double the price of a mild built 212 that will spin 8k. It's the go to engine for the guy/gal who can't build a engine. The 224 is the engine you want to build for racing.

[@svpracer98]

Reminds me when I used to run a Yamaha class go-kart in Shanghai. We ended up shipping it back and then never running it on a track again.

[@enginebae3471]

Instantly jumped on the hf app and was surprised to see the ghost is only $300 “kit is $150” but still a hell of a deal. Might have to pick 1 up 🤔

[@kennethperian4370]

Great job showing and telling, thanks for showing see ya next time be safe see ya bye.

[@LaLaLand.Germany]

Always a good idea having the intake above a wheel, air is definately the cleanest around there.

[@anthonyincars]

Interesting. I’d be curious to see how it would fare on track next to a Briggs 206. That’s a $1000 chassis all day long, definitely not a $3000 roller.

[@justinbayse4417]

Yeah Lmao, that thing is old as hell.

[@sempoelman8352]

And idk in what class hè can race in with front brakes

[@TrolloTV]

@@sempoelman8352 Dont shifters always run with them?

[@georgepressel2495]

Not able to run the torque converter currently maybe HF needs to sell those too. Great job on the carb the gy6 carb works awesome. Even the ikf/what header thumbs up HF!

[@sempoelman8352]

@@TrolloTV yea But this is no shifter

[@theBoomerDoomer]

Is it really a "waste" if it's bringing you joy and helping you to have fun? I think not. Now, the mission is to take the kart through the Taco Bell drive-through.😂

[@20tea]

...while wearing a Mario hat!

[@DanITGuy]

OMG!! LOL HELL YEAH BROTHER!

[@bw831]

He said go into the engine every season! lol. I raced lite stock 22 years ago. I won points championship one year, and it cost me. We ran 5hp Briggs and Stratton engines back then, but to stay competitive, I had to tear down and refesh the engine every 3 nights of racing. A night of racing consisted of a couple laps of test and tune, a few laps of qualifying, and about a 20 lap race. Even ran that little if you didn’t refresh every 3 nights of racing, you wouldn’t run up front.

[@alancrisp1582]

🤫🤭 Looks like so much fun, and a chance to re live your childhood. Might get one 🤔for myself too.

[@MaxDad7]

I can't wait to see some home made motorcycles with this engine. The exhaust is actually pretty nice!

[@dannyoakman4661]

I know they used them in Minibikes here in Phoenix Arizona and they jam”run Good “ I Blow my Other 212cc Motor Non Himi, So I went back And Got a 212cc Himi And Put it on, I Have a Mikita After Market Carb And I Can’t Believe the Results When you turn the Throttle No hesitation at all it’s their it Goes No Problem The old engine was on the mini when I got it so I have no idea what it’s been through But Now OH Dam, And Yes I took Out the Governor as Well, I Have hit 60 on my old motor, No Governor. I’m just waiting to break it in, then maybe post some Video oh, Maybe I Should let ya know I’m 60 and just 4 mouth’s ago I broke my left collar bone, I was riding 3 weeks later, Die hard I guess, I just love to ride started at Age 8. Keep On Ridding no matter what it Is If You Love Do it ! Don’t let Anyone Tell You Different! 🇺🇸🇺🇸🇺🇸🇺🇸🇺🇸

[@psalm2forliberty577]

Check out the GoPowersports channel they have many Mini Bikes with this engine & other hop ups. They sell a Mega Moto 212 complete bike kit w/ front suspension & disc brakes, less engine for just $679. My log splitter has the 212 Predator - dang thing splits wood like crazy. Fluid valve just broke. Gonna yank the 212 & get that MM 212 kit bike & do a build !

[@wizardvega724]

I was thinking a moped especially with digital ignition

[@EncryptedCryptid]

Now you gotta get a build to compete with the Cars and Cameras guys.

[@sammikhail3837]

Lol. JR is such a kid at heart. Great job. 👍

[@nbrowser]

Wow...after the engine swap that thing is sweet! Nice acquisition the JR!

[@ChrisHarmon1]

The whole time you are talking about needing a throttle cable I'm thinking "I'd just have ground the ferrule clamp down". Felt good when you mentioned doing exactly that and it worked.

[@glassvial]

I would love to see Hoovie try to fit in that thing 😅

[@DanoFSmith-yc9tg]

Easy throttle cable fix- go to a bike shop and get a brake cable, most bike shops have bulk 8 foot cables with various ends on them, and put their own casings on to suit each bike need that comes in the door.

[@Name-vu1kn]

You should mount a pulley by your right knee and run the pull chord to that so you can pull start it easier.

[@mikehunntt5338]

We usually just take the stock 212 jam the governor open and throw in the racing valve springs 9k rpm 10 - 12 hp

[@JT-il3fe]

Cast iron flywheel is my only concern with that engine. I would definitely be going with an billet aluminum flywheel. Great job guys thx

[@reprehensiblereptile187]

Used to run a billet aluminum 3HP flywheel on my B.S. 5HP open engine in the 80's when I was a kid. Once I threw away the iron 5horse FW, rocketship. Lighter, faster.

[@soupernutt9508]

Why do you want a lighter-weight flywheel? Why not make one out of Li? Because it's about mass, and Fe has a much higher density. We want angular momentum in a flywheel. So, mass matters.

[@reprehensiblereptile187]

​@@soupernutt9508 Ok, I can't speak to any of the newer 4 cycle SINGLE piston engines, but the 5HP BS motor (pre-monster), generated more torque, rpm, and HP with the aluminum flywheel, period. Having put the thing on a dyno before and after the aluminum FW, there was a notable RISE is all three. The only noticeable, and provable negative, was the thing was harder to start, without the heavy flywheel to 'store' the energy of the pull-starter. Mass does NOT matter when we're talking about flat-out gokart racing flywheels. On a tractor, or a lawn mower/brush hog, yeah. This is racing and weight loss = more power, more power = more speed. P E R I O D. On the downside, I've seen open modified engines of 5hp BS WITH iron flywheels shear the crankshaft, under accel, or decel. Never happened with aluminum FW, NEVER. You're trying to compare lawn mowers to race karts, and it just doesn't work.

[@soupernutt9508]

@@reprehensiblereptile187 So, did you say a flywheel GENERATES power? It's just a piece of metal. How does that work? You can achieve the same mass and angular momentum with any solid material (if it doesn't fly apart). So, why Al? I am an engineer. It's just physics.

[@reprehensiblereptile187]

​@@soupernutt9508 I could write about so many things involved in this debate. But I'll sum it up in two words: SPUN MASS. Increase it and every (moving) part of the engine works harder, reduce it and the engine works more freely, develops more rpm, more torque, and badabing: more power. NO a flywheel NEVER produces more power, but a LIGHTER flywheel does take away that extra mass, which DOES cost power on several levels. RPM, torque, and HP. Was it a cheap mod, no. Was it easily made to run perfectly, no. When it was finally tuned properly, yes it was faster, MUCH faster. RACING requires engineers to think a little differently about a few things. I know, it's almost impossible to convince anyone with a college degree that a hick with some tools, and a pile of money can actually build a fast engine that doesn't make any sense. Give it a try though, you might have some fun, and learn some things. Just, don't try to apply them at the factory or lab you work in, because they aren't in any way practical.

[@samb.7395]

@18:52 you said it no longer dies when cornering because it has a real fuel pump. Thats wrong. The original predator engine was dying because it has an oil sensor that instantly kills the engine when it doesn't sense oil. Sharp turns cause the oil the shift to one side of the crankcase. It's super easy to fix though just unplug the yellow wire and it disconnects the oil sensor.

[@rpavlik1]

Wow, that thing has acceleration, when you pulled out behind that car, you caught up dang fast. Don't forget hearing protection with your eye protection!

[@jarrettbank]

Such a monster! That's why it makes 1/3rd the power of a late 80s Formula A 100cc kart.

[@_AvgWellInformedCitizen]

BOMB That Predator sounded beef AF, but the Ghost sounds like a stock engine - and still outperformed. I bet you can safely squeeze 35 hp out of the Ghost and still last a while season. Time will tell…

[@OILFACE]

Seen a methanol stage 5build on another channel, can def be beastly

[@BuzzLOLOL]

Flywheel on Ghost engine will explode if revved above electronic limiter... and it's 3 times over priced...

[@dandahermitseals5582]

Now you need to learn to tune that carb.

[@michaelhawkins5530]

Nice new toy. What are the plans to address the tire leak issue and muffler pipe support? Time to pick out a cool new seat you and your friends can fit in. Do you have a new cameraman?

[@garysimonson9593]

when I was 16/17 I worked for a guy (gas station) who was into kart racing, his kart buddies all hung around the gas station working on them during down times. Most of them were Mac powered, there was a twin-engine setup on one. Things were so fast.

[@sempoelman8352]

The twin-engine is on s prokart frame they are stil in use now

[@johnrogers7682]

Ñ

[@johndoe297]

A trick with the predator 212 engine me and my buddies learned in a our mini bike drag racing journey. If you look on the engines before buying, look for a like a brushed rough finish on the metal plate on the back of the engine. After some research we learned those are hemi’s, and also perform a lot better. An then you buy all types of performance parts and rebuild the engine and we had to fab wheelie bars lol an side note our buddy made a mini bike and completely rebuilt a 212 and ran it off nitro lol I don’t suggest anyone to do that but if you do make sure you have bike pointed where you want to go before you blimp the throttle lol

[@crazyprepper5400]

I had one running nitro about 3 years ago maybe 4

[@jonathanj.4800]

Where did you learn to slice open those boxes?

[@3GingerCats]

the dying in corners has nothing to do with fuel on the old one... you just need to unplug the low oil cutoff lol

[@jefflarson6513]

I like this guy's enthusiasm. Fun stuff.

[@johnlincoln4616]

28 pulls for initial start for anyone who’s wondering, my arms tired for you JR haha

[@DonnieRockett]

I didn’t pay attention, but if he didn’t blow gas up through the fuel line, it definitely takes a while.

[@dubmob151]

I usually just use a propane feed into the intake to get it running right from the start. The HF weed burner supplied with a BBQ tank does it nicely, or just a regular small propane torch that you can meter to keep it idling until the carb fills up enough to run on its own.

[@teter129]

Your numbers and facts are way different then the reality. But with that said, its pretty cool and I hope you enjoy it.

[@silverstreak1001]

Was just about to go to sleep. Just in time

[@chrisestill8825]

Couldn’t sleep. Been watching some videos about Predator upgrades the last few days. Really glad to see this

[@daveallen2455]

So will this engine fit a mini bike ?

[@mlindholm]

Almost made a fool of myself! Paused midway to ask if you'd added the oil, by asking if you were gonna use Motul...decided perhaps I should finish first. What'd you say next? "Race oil for the race car!" 🙃

[@JackBWatkins]

Can never say a sponsor’s name enough, even in the comments. Motul… Motul… Motul… You’re welcome, JR. And you’re also welcome, Motul.

[@miosis23]

you might have used a bicycle shifter cable. they have two different ferrules, one at each end…2 ta choose from! looks like fun! enjoy!

[@fuzzycuffs]

Now you need to make some WatchJRGo branded blue shells

[@logdon17]

That thing fits a short guy like you perfectly, not sure my legs would be able to squeeze into that (I'm 6'3)

[@michaelwinner9191]

I think the original engine died when taking corners because of the low oil sensor. I had to disconnect that on my 212cc predator

[@Cantfocvs]

Thinking about putting one of these on an old electric scooter I got. Strip all the electric stuff out and put the engine where the battery used to be

[@paulforrester4057]

That was hard work watching you start the ghost engine, next time blow threw the external pipe on the fuel tank and the fuel will flow to the carb. Good job with the engine swap though

[@zekenoscooter_8608]

I liked the resourcefulness on the cable. I build and ride motorized bikes and I'm pretty tall so want really wide bars. Cables can be tough. Also on a budget, and try to recycle everything. I've even gone so far as drilling a barrel sized hole in block aluminum the a smaller crossing hole for the cable. Fray the cable a little and fill the mold with solder. Solder won't stick to the aluminum. Carefully cut away the mold by hand, (hacksaw or less. No power tools). Couple passes on the grinder ... work great.

[@TheBrokenLife]

Yesterday Tokyo Drift, today Mario Kart. 😆

[@danielseelye6005]

Tomorrow Cannonball! 👍

[@oldmountainmarineandmetals9736]

I'm more impressed with your shop! That's sweet!!

[@jeffreystone7327]

Awesome video and awesome engine. Thanks for sharing. I have a shifter kart I’m wanting to convert to a Ghost engine. So our grandson can get started. He definitely does not need the shifter engine. I do have a couple of questions please. What sprocket you running on the rear axle? Then most importantly, what torque converter is on the Ghost? Thank you for your time. Greatly appreciated. God bless.

[@Kilometers_KPH]

"RACING USE ONLY" *Laughs in Floridian*

[@C-M-E]

Evidently I've been out of carting far too long. 10k for a chassis?! Geez, used to be that carting was cheap! $1500 was like high end last I looked (yeah, it's been AWHILE). For 10K, I'd just assume do a track day on a beater.

[@desperadoehitus8704]

his numbers are way way off

[@gearbanginentertainment7476]

its a 1500 cart and that is tops. his numbers are extremely off.

[@TrolloTV]

This thing would cost 10k if it was new with a new engine. Clearly not the case though

[@droddy1972]

Yeah, a brand new IAME KA100 with all electronics and upgrades is quite $10k as of Jan 2022.

[@toreyweaver9708]

Cool! Do they require a break in?

[@WatchJRGo]

I just ran it hard then changed the oil the next day, should be good to go now! 🍻

[@69Dartman]

It's only money... Sounds like a cool toy that you could always upgrade if you really like it 🤟

[@WatchJRGo]

This video is the upgrade 🚀

[@69Dartman]

Cool, the video just dropped when I posted, it's gonna be epic for the money. Add some chrome and it will gain even more power 😎

[@bannedbycommieyoutube5time920]

@@WatchJRGo turbo😁?

[@newzealandearthmover4008]

We turn these track karts in to grass karts to race. Add 450 motox motors, 250, 125 2 strokes etc. We have over 100 karts per meeting. We add 6" tall alloy wheels and tyres. Non slicks. They are awesome fun!! Drifting galore plus the power and torque of a 450 is insane 🤘

[@tomupchurch4911]

👾Nice kart man... it's worthy of a salvage GSXR or Ninja engine!

[@blakesteinert6175]

Where do you go to get an entry level kart?

[@PrincessTS01]

i bet elliot alvis would fit better in that seat he's smaller

[@WatchJRGo]

No he's not, we're exactly the same size, Jake would fit. 🍻

[@thomasciul8932]

I really want one of those. But back in the day when every one used 100 c.c. rotary valve 2 strokes those karts would do 75 + mph! Bring back the old days please!!