440cc Murray Goes Full Send and FLIPS!
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- เผยแพร่เมื่อ 5 ต.ค. 2024
- We install a new driver clutch on our 440cc Kawasaki Arctic Cat snowmobile engine and take the Murray Kilowatt for a ride! This 2 stroke go kart isn't blindingly fast, but it's definitely quick. The off road go kart was fast enough to flip when I went into a turn too fast! We still have a few kinks to work out, including the exhaust and gearing.
Thanks for Watching!
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![[Live] : ONE FIGHT NIGHT 25 วันนี้!! "อเล็กซิส vs รีเกียน"](http://i.ytimg.com/vi/suVr9a6BM2g/mqdefault.jpg)
Me: it's slow!
10 mins later me: *flips*
hi!
CarsandCameras yee yee
Didnt flip it. You just put it on its side.
Set of ngk br9es or ngk br8es somewhere around .16 gap, my rotax motor will run fine up to 4500 rpm an fall on its face if it has one fouled plug, pull a plug wire off see which one kills the engine an go from there, also they like stock exhaust set ups
Carsandcamras👍👍
keep all hands and FEET in the vehicle at all times.
Right!
I saw that too that could of gone a lot worse the roll bar was close
So waaaaay back in the day, when the briggs and stratton 5hp engine was the norm for a kart, I had a simple kart. Next to our house was a dirt road. I would go down the road, pitch the kart sideways into a powerslide, and go back up the road and do the same by the house. Over and over. lap after lap.. until one time.. just like you did there, it caught the edge of the tire and tipped.
I also laughed and pushed it back up. Except the Briggs had the fuel tank on the motor. some fuel came out, touched the muffler.... pooft! kart on fire!
Sprint back up the road.. whole time thinking, where is a fire extingusher?! Remember my dads boat has one. Jump up in his boat, grab it.... sprint back to the still burning kart.. and PUSSSSHTT put it out.
Did the push of shame back to the house.... 1 carb rebuild later (burned out all the plastic parts including the choke, intake box, etc) and it was good as new.
lol @push of shame. man do I know that one. But Oh the memories, and the learning of physics and such the fun way. Good story, took me right back to an old dirt road with a Briggs singing its tune.. the 5hp that was always fast enough to tear something up, get you to a great adventure, or just feel the pure freedom that came from just a few sips of the big red jug. All depending on how deep you were gonna bury the throttle that day. Anything to do with a yard cart, even the push of shame.. is still a good time.
ahh the good ole days of quality over quantity...
Fires are scary. We laugh at them on youtube. Once you have one of your very own its not so funny. I like the stock predator tank. Its way less likely to spill fuel all over when upside down. I like the dirtbike vents that have the check ball in them. And i like a good tight gasketed fuel cap. Yes i hate running out of vent when the power is wicked up and not enough vent. But i hate fires more.
Also i like exhaust wrap. Alot. For leg burns and also less likely to light off from raw fuel on hot pipes.
damn im glad mine didnt set on fire when i flipped mine when i was 13 ...i had no means to put out a fire hahah i was lucky i guess.
well, we all had a fire extinguisher built right in.. Just didnt think of it at the moment. lol
The positive camber on the front is mad
Sithhy. 100% it's a wonder it can turn at all with that outrageous camber. Needs to be addressed asap.
@@shawnhurley3815 , thats the 1st thing that i noticed and probably led to
the flipping of it lol
They probably have noticed it and will hopefully address this
No shit you’re right
That is probably the main factor in his flipping it. The tire is literally biting the ground and throwing the weight of the cart right over top of it if that makes sense. Kind of like when your running and your knee locks up.
It's not revving high enough, those old 2 strokes should scream.
It should !! It's all in the clutching
Yes they were I've built 2 stroke big just enough to keep the sleeves from blowing through the aluminum jugs I've blowed a lot up and found horse power from unexpected places and had a lot of fun 😂
Play with the torque converter weights 👍
yea they put on a completely different primary clutch and expect it to work just cause it fits onto the shaft
I doubt that is the key. I would start with spring. If it’s building heat I would add weight but it’s not. It’s boggy because it’s got too much weight.
So if it has a 200-320 spring in it. I would go up to say a 275-400 and see. That will gain you rpm across the entire range, remember the weights are fighting spring pressure. More here holds the weights longer.
If you have not , I strongly suggest Olav Aaen clutch tuning handbook as reading. It will get you where you need to be trying to tune cvts
Woah, you made the thing run on Gatorade!
Honestly thought that for a sec and it was red so I thought it was the strawberry flavor
Been riding sleds since a kid....growing up in Minnesota...
. Run 50:1 and jet the carb...
... snowmobiles are jetted to run in 30 degrees or colder.....makes a huge difference.....Mike
It does sound kinda rich maybe, like it's not wanting to go full cause its flooding itself
I thought dudes leg was broke, when he put his foot down tryna catch himself!
Maybe look in to wider stance for front-end, hell all around even,.. problem solved. i could watch these builds all day man!! That kross-kart is wicked-sweet!
No wonder its flipping awesome look at that camber
I kept wondering about that and while I can't say for sure but I'm not liking that lean angle on the front tires
Notice the lack of an upper control arm. The spindle is fixed solid to the single control arm, thus giving it the suspension characteristics of a Ford twin I beam.
2stroke is very picky about an exhaust i'm saying
change the exhaust!
EpicFallDown also the carb is crap.change it
I think by this point, with us commenting on every. damn. video. with exactly what is wrong with it.. I fell it's safe to say they aren't listening.
It really depend on what after but yes they can be a bit picky
@@marcruales8050 there nothing wrong with that carb keep in mind running a 2-stroke rich can also causes more problem and one is poor power output after they setup for winter use
@@stykytte ive notis same
that stormtropper is one of the sickest karts on youtube
thanks
The Fast and Furious references to the oil was a nice touch 😂
Looks like a blast have a great thanks giving
Never,EVER stick an arm or leg out when Rolling over ! You came so close to having it snap your leg.That is why nets are required for racing ! Please !?!
Yeah I saw that too. My eyes went wide and everything
Yep broke my left arm near my wrist due to reaching out and trying to catch myself and roll bar landed on it while flipping (no seat belt either)
No one plans to roll, but yeah race netting saves limbs from getting places they shouldn't
I followed a guy in an Odyssey who flipped it, snapped his arm like a twig. He had opted not to use wrist restraints but we all used them every time from then on.
lucky it was at low speed, got crossed up and high sided , thankfully no major injury.
Wow! You came close to breaking your leg when you rolled. ALWAYS keep your arms & legs inside at all times. Might not be a bad idea to buckle up on every ride. Those carts look like lots of fun .
That thing is awesome y'all build some pretty cool stuff I've been watching since before the rat rod wagon
thanks
watching this is getting me excited for this summer, ive got a 2 stroke 440cc yamaha exciter engine from a snowmobile and its gonna go on an old gokart that ive had for years.
clearly John's head is heavier thus causing the roll
“That’s flipping awesome”, no pun intended
That 32 to one looks scary in that gatorade bottle because it pretty much looks exactly like Gatorade 😂
What I was thinking 😂😂
I hope they bring this back with the new yard, would love to see the 440 with a better carb and proper expansion chambers/racing exhaust
good news for you!
When flipping always remember to stick your foot out the side to keep it upright...
Kent Campbell watch it, there’s little kids watching who will actually do this
@m cotton wool is bad, we don't want a generation of snow flakes.
@m and with a name like yours I would expect that kind of reply. I am going to guess that you are American, as the entire rest of th world knows the US education system is substandard and you appear to be a product of it. Try a bit harder mate.
@@nordic5490 whatever shit box country your from I'd be embarrassed calling people mate.... Its the same as calling them a match.
m he panicked as he was about to crash, calm your ass down a bit man..
Played it awfully chill after the roll John. Dead giveaway your feeling it when automatically you sit down and act chill. Lol. We all remember Biffing it heavy and after trying to look cool. Those were the days
I see that 2 stroke minibike in the background 😏😏
So im still sorta new ro your chanel ive been watching for a month but you guys inspired me to fix one of my old gokarts (i have 3) so my dad bought me a new engine we have been working on all thanks to you guys inspiring me
Loved the faf reference
It’s always entertaining with you guys. Can’t wait to see how big you get. You make the perfect team together stick with it mate.
They got big
Being a sled engine an it not being winter I’d definitely say the coldest plug is definitely 100% the way to go
Fourstrokekiller 69 this is old thread but I’m sure I was referring to that he said he was running 7s or questioning plug heat rang or something. I’m a professional and not bout to be schooled on wat plug heat ranges do. Lol
Fourstrokekiller 69 if the plug don’t get rid of the heat fast enough then the plug itself will run hot. The tip. Causeing pre ignition and ping also creating lots of excessive heat In Turn hotter engine. But I’m sure you already knew that
That looks like fun! Thanks for the ride............ John, I hope your father does not see his yard for a while!
From my little experience with two strokes back in the day, they rely heavily on the reflected reverse exhaust pulse created in the expansion chamber, which is why every cylinder has its own separate expansion chamber, your 2 into 1 (which is fine on a 4 stroke) will really mess with performance, put a couple of expansion chambers on that are the right size and I bet it will solve most of the probs.
I haven’t watched every video but so far this is the cooolest race I have ever seen on this channel. (The race between the Murray and the cross kart)
Toooo much raw 2 stroke power 👊🏼✊🏼✊🏼✊🏼
Except they have done almost everything you can to reduce 2 stroke performance, that 440 should be revving waaaay higher
The "plateau" in the Kawasaki 440 is real. They used to do the same thing when I ran them at Malibu Grand Prix. Same engine, looks like the same clutch, though we ran a 32mm Mikuni carb and a can exhaust.
That plateau is the engine trying to wind up the clutch. The clutch you have on there is for a much heavier vehicle than the Murray, an Arctic Cat Sled. (By comparison the 'Virage' race car at MGP was 700lbs dry and usually carried 22 gallons of fuel) So you can either re-gear the secondary, or put different springs in your drive clutch that let it start spooling in sooner, and tighten up the belt for a lower "stall" rpm when it engages. I think I would actually try the latter first. Changing springs in the clutch is easier than redesigning your whole drive train.
May be a combination of things. Exhaust, carb, plugs, gearing? I am not a 2 stroke expert, but I know they are super picky about exhaust systems.
Snowmobiles are jetted richer for the cold weather. They run like crap in the summer time. Go down 2 jet sizes and it would run much better.
Clutching , the power bands are so narrow cvt tuning is critical. If it loads the engine to much it will never come come out of it and rpm.
@@doomman700 just because it's a 2 stroke doesn't mean the power band is ultra narrow. If it would push a snowmobile through knee high powder at 55 mph, a light kart is almost no load in comparison. These old sled motors are not spinning a ton of rpm, and make peak power around 6k.
Ryan Washenesky well consider I was around when they were racing 440 Kawasaki’s new, se ran mercs but had an invader. It was a liquid sled but it was factory 7800, tuned for 8200 because it had twin Aaen pipes.
Now you point out less drag, yes cvt is a torque sensing unit and it needs to see proper loading. You want it to hit 6000 and creep upward. Don’t take my word call a clutching guru for help. I know nothing, I only put 3-4k miles a year on snowmobiles and have since the early 70’s. ✌️
For sure I think this video finally gave the cross kart a lil reference. Sick pass.
"We are going to K.I.S.S." (vidieo buffers) (me gets scared) " keep it simple stupid" (me ohhh thank god)
How have I not seen this yet?? I love the Murray!!
I’d say its the torque Converter, in my opinion it always feels slower with one of those
It really fast off the line
So it’s torque while sacrificing Speed
They moved the engine forward, So they put slack in the belt. Changing the engagement and speed
Snowmobiles have torque converter from the factory
What do you think a torque converter is
@@TUGG75 um.. no, where did you get that idea?
i remember flipping my Manco GoKart on grass in a soccer field....my parents were 200 yards away watching sitting by the car. I was maybe 13 years old and flipped over while going about 20mph with no seat belt. I was fine I had a cage and helmet and my head hit the foam covering the bars i hopped right out all at once and flipped it right side up before they could run over to me haha but my mom was so freaked out haha i was mildly freaked out but then bought a torque converter clutch and put a 10hp motor on it. Dad probably expected it and hopped it wouldnt flip haha good times.
after seeing that I went back and watched Ike flip the 670 mower.
you just like watching me get hurt.
@@isaacitllbefine7231 Na bro. But it would make best of reel. Like John vs bush and John vs WOT
Same
@@isaacitllbefine7231 PLEASE ADDRESS POSITIVE CAMBER! THAYS WHY IT FLIPPED OVER!!!!
@@tebibyte2357 positive*
I love both those carts be proud my friends be proud good job guys
thanks
Yup, I'm claiming a point for recommending mufflers on the Cross Cart.
I recommended the twin carbs, a four into two exhaust with muflers as well. These guys couldn't tune a radio better yet a engine
You and like a thousand other viewers 😌
@@MrGixxer1300r Wow, what a toxic drama queen you are.
And I love all your videos you guys inspired me too buy a mini and build it myself great vids 👍🏽
Loved the welder and music in sync, was that planned?
Oh, and definitely change the exhaust. A long time ago I used to use a company called Allspeed & micron for 250 - 750 two stroke applications 👌
The exhaust is completly wrong. Its not getting near the power band yet.It also needs rubber mounts or it will rattle its self to bits.
Ive tested a bunch of cart designs,built a few and wrecked allot and honestly,i think you guys did a pretty good job with building your cart with what you had.I can hardly wait until you decide to shoe horn that Ducatti motor into it.You guys would get better use from the motor because simply the cross cart is just the buggy for that motor,makes perfect sense.I know 100% that if you ran the Ducatti motor in the cross cart and matched it with a set of paddles along with the right gearing ,,,,ill just say this,youve never known how big of a adrenaline rush that would be.Yall bring that one to life and out at the dunes youll be pulling cat walks in that cross cart, now that will be impressive allong with the hits on the video of the buuld.Love the vids brother,good stuff.
thanks. it was fun to build
I guess your dad gave the thumbs up on not caring about the lawn LOL....
I'm thinkin he is comin around.
The storm trooper is is still cool and the Murray is kickin it dude y’all r doing great and remember ITLL BE FINE
Was totally expecting a crash but still jumped when he did it
OMFG the throwback to FnF at 7:11 absolutely killed me LOL thank you so much
I feel like calling someone a Jack shaft now!!
That replacement primary clutch is a Comet 102C. those are pretty good primary clutches. Comet makes larger ones that one. if that one doesn't hold up. I always mix my fuel at 50:1 but that's on my snowmobiles. it might be different on a two stroke in warmer temperatures. it seems like it's to high geared. from what John said and it should launch much better.
Sees notification, leaves current video mid stream. Screw them I have a C & C vid to watch and it says "FLIPS".
Cross kart is the coolest project to date from you guys.
Haha, love twostrokes! I think you should change the gearing. A twostroke wakes at high rpm and when the power kicks in, your cvt should attack :) Thank you guys for brightning up my mondays and wednesdays!
So awesome I love both of them.
The fast and the furious line 😂
I was waiting for ike to flip the whole time, then bam its john
lol. it wasnt me for once!
Just changing the premix ratio won’t change your jetting enough to help. The needle clip position and jets will make a world of difference if the top end isn’t shot
Yeah for a engine that's probably jetted for 32F or below. I'd say lower the needle, lean it up a bit. (GUESSING)
yea i was thinking its in the carbs as well and my arctic cat 440s run dual carbs on both the regular and snopro fan variants. i was thinking they could pull a little more outta them swapping that single set up out for a dual set up and i was also a little concerned about the head gasket maybe leaking a bit it seems way under powered compared to what even my old 1996 z440 was and if im not mistaken they did reuse the head gaskets after checking out the inside of the engine but i couldnt remember which motor that was but can make a huge difference... no compression no power
James Dean I’ve never fooled with any snowmobile two strokes but I know on all of my 250 2T dirtbikes when they’re running like that it can only be a few things... ruling out the ignition system(besides the plugs lol) or powervalve(not sure if these have them if they do then that could explain why it’s no throttle then all of the sudden) it’s got to be the compression or bad carb settings. Altitude probably doesn’t effect them so I’d start with factory settings and go from there. Should be 32:1 premix if they’re wanting a safe ratio and won’t be on the pipe all the time.
Fast and Furious reference. Bonus points.
You should have said "That's not what I had in mind" after the wreck, like Vin Diesel said in the movie
Amsoil full synthetic 2-stroke mix
100 to 1 ratio 👍. Check it out
You gotta mention Saber lol
I also grew up around these old arctic cat snowmobiles with Kawasaki engines. They definitely used to hit a power band and wind out pretty good. I know you guys are familiar with cold air intakes being that colder air is more dense. Like somebody mentioned I think that you are running rich because you don’t have cold air Running through the motor. Probably need to lean up the jetting. You can figure out how you’re running by running at different throttle positions like wide-open throttle and then just turn off the Killswitch. Take the plug out and look at the color that will tell you how your jetting is.... I think this was a good motor but some of those Kawasaki’s had a tendency to burn holes in the piston. And warmer weather you may want to consider a cooler plug. Always want to build a 440 go cart and you guys did it good job.
You guys are already planning CrossCart 2.0, aren'tcha?
Nice fast and furious reference
keep your hands and feet inside the ride at all times
These Kawasaki 440's were quick and reliable engines for Arctic Cat sleds in the 70'. A lightweight version of the same engine is also used still for Ultra Light aircraft. The Kaw. 340 was reliable but quite a bit slower. And from 1980-2005 or so, the Suzuki replacement of the 440 was bulletproof and had no problem getting up to 70 mph. The Suzuki 340 engines weren't too bad and could still make a single seat sled do around 55 mph. They were in the Puma models in the 90s.
7:27 i was almost about to comment about your mixture being too oil rich, wasn't 100% sure you knew the symptoms but sounds like you're on it like a car bonnet (I'm English, gimme a break!)
Literally FLIPPING cool
Lighter rollers in the variator should let it rev higher and 2 strokes love to rev, it's like turbo when they get up.
HighDef Gaming you mean lighter weights. Atleast in the generation the rollers are fixed weight, tuning only involves matching them.
You guys need a track with banked curves without trees so you can have a ball. When I was a kid my best friend and I had gotten ct70's and my friends uncle built a small circle track, banked the curves and we raced almost every night. That was so much fun, I'll never forget it!
We need a go fund me to go towards that lawn getting fixed by a lawn care service lmao!
His rich daddy can fix it
See ! If you only listened to us Northerners about sno-mobile engines sooner, you would have had all this fun....years ago ! lol ! Happy Thanksgiving guys !! peace
I think 2 cycle engine needs new carburetor new carburetor can always make a difference
At least you guys are having fun and I always get a good laugh
12:05 Most broken leg and foot
Living in northern Canada, I grew up working on snow machines. Their 2 stroke engine power is very dependent on rpm. That’s why they have CTV drives. Most are tuned to provide max power at around 8000 rpm. A 45 hp engine running below 6000 rpm (this 440 seems to be spinning below that even) will only make a small fraction of its rated power. It’s all in the clutches... let that engine rev!
First, and I told you so
Had one of these things and it was a freaking blast. I was young at the time but if I had that KiloWatt still id turn it into a beast. Bent a couple shocks on rolls but the frame on those thing are sturdy.
uummm....compression? compression test that SOB
I would say for there skill level and mechanical skills, that’s pretty impressive. It still blows my mind hearing some of there commend and thoughts.
Real mechanic/fabricator is like, just give me a couple hours and both those karts will reach full potential!
Last again
You guys remind me f when I was 13 year old the parts u use I put to the curb but your having fun so it's all good!
FIRST!!...YAHOO!!
That CrossKart is so friggin cool.
Loved that fast and furious reference. Awesome
Those engines usually rev much higher !...I can hear the tone of the exhaust, and during winter they'd rev twice as high ! I haven't driven an Arctic Cat for 20 plus years, but a twin should be whaling !! lol ! Happy TG !!
thanks
You need Shawn White dual expansion chambers, they ROCK!!!! I've used em on all kinds of different machines, and they added more power than they claimed!!!!
I remember in a race snowmobiles with 2 cylinders. Some racers would run a hotter and colder plug. The reason I was given is the cylinder and piston closer to the clutch "work harder". Its probably racer magic. I've had conversations about people trying it in 2 cylinder banshees.
Anyone else glad to see the cross kart going all out?
i wonder if you could add some tabs on the front arms of the murray that are a bit further out closer to the wheels to get the center of gravity down a little bit? boy if you were to widen the stance in the front and the rear about 6" each side i bet that thing would handle both turns and bumps a lot better. love the content as always, love the 2 stroke action! nice change of pace
The Murray looks like it would benefit from some larger front tires. Maybe some from a quad and longer A arms from a quad as well. More steering authority and less prone to rolling. Low tire pressure in the front will make it roll over as well. Love the application of a sled motor to a go cart. Fun channel to watch👍
Eyeball Engineer here. It looks like the 440 cart has too much positive camber on the front which can cause the front to "tuck under" when cornering. You guys are having too much fun!
Dude. I am so happy you didn't get hurt. Just a minor glitch in the pursuit of more speed. You should really wear some motorcycle boots to protect your ankles.
I cannot believe you flip a go kart I'm glad you're doing all right keep making those videos Happy Thanksgiving
Wait until it really rolls into the power band. Like you guy’s said, there’s just not enough space to let it wake up. This actually reminds me of a little KTM dirt bike I had. It was a tiny water cooled 50cc bike rated at Ten ponies with an auto, just gas and go. Anyway, when I first got it running I thought it was ok but I definitely expected more. There wasn’t enough space in my yard for it to stretch it’s legs. Well I finally got to take it out to an open field a couple of day’s later and when the power finally kicked in it was amazing how quick that tiny bike was. It pointed the front wheel to the sky while trying to throw me off the back. I just barley managed to hold on. I had a blast feeling that huge surge of power every time it would hit the power band. I also did some carb tuning because I still felt the power (while very strong) was coming on just too late. So I installed one size smaller jets. Someone had installed jets that were too large and choked the engine with too much fuel. After installing the smaller jets it finally ran perfect even hitting the power band in my yard every time. Two strokes are very exciting but they are hard to get the carbs dialed in for. I’ve had a few since that tiny bike that weren’t as easy to dial in.
Come to NY to Paradise Speedway. Its a gokart/Quad track, kinda small but a safe place to turn some practice laps. They have open practices every Wednesday night and racing on Saturdays. Check them out this summer :)
New carb, performance pipe. Btw snowmobiles always have that plateau feeling. You guys inspired me to do a 80cc shifter kart project for my channel. Keep up the good work! I’m repping your it’ll be fine hat 👍.
That Murray go kart is RAD