How To Convert A Vertical Shaft (Lawnmower) Engine To Horizontal For A Go Kart
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- Опубліковано 15 вер 2024
- This is how I converted my lawnmower engine for use in a go kart. The engine was a 1990 4hp briggs and stratton. If you have any questions regarding the modifications post a comment, I hope this is helpful.
James
Ignore:
How to make a go kart from a lawnmower engine
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vertical shaft go kart
vertical to horizontal conversion
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how to make a go kart with a lawnmower engine part 1
how to make a go kart with a lawnmower engine part 2
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P.S. The groves or channels for the crankshaft and camshaft are in the bearing surfaces the crankcase provides. These are holes the crankshaft & camshaft run inside of. They hold them in place, there are 2 big holes for the crnkshft and two for the cam. If you look carefully at the the way they work when the engine is vertical they won't work as well when horizontal. These groves are gravity filled, with oil. With the crkshft and cmsht removed. take a small drill bit and slowly make new ones. I believe it only has to be done at three bearings, one of them will work just as is. Just hold the drill bit flat inside the bearing surface while spinning drill bit it will want to run to the side, just hold the drill as tight as you can and steady. They don't need to be perfect. Gravity will fill the groves you just made with oil to lube the crnkshft and cmshft as the engine is running. The factory groves DON"T even need to be JB WELDED, just leave them as is. I hope this can explain how easy this is. I don't own a camera or a cell phone, but I do dumpster dive for engines to make gokarts. Always have fun and try to always wear a helmet, they have saved my life. =)
You only fill that one factory hole on the larger shaft so it doesnt lose oil so quickly.
@@JarthenGreenmeadow That is a good way of looking at it, thumbs up.
thank you so much i want to build a mini bike with a lawn mower engine and all the videos on this are kinda confusing but you mad it really easy to understand
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asfor the oil flicker thingie: dont weld some heavy lump of steel to it, unbolt the bolt, bent some thinner steel and drill hole, stick bolt through hole and screw back into the big end bearing. job done, lots lighter and ahelluvalot easier
I used a 4 foot piece of conduit as a breaker bar to loosen that nut. Cut a piece of 24 gauge steel sheet metal about 3/8 inch wide (the width of the rod connector basically), put a bend in it. Drilled a hole and reinstalled it. Took about 5 minutes all said.
And lighter keeps the rotating assembly in balance more. Take a postal scale and measure the weight of the oil dipper, then figure a way to add that SAME AMOUNT of weight to the piston end of the rod.
@@donrutter6765 my total added weight was in the neighborhood of two grams if that. Really nothing I am worried about counter weighting.
I'm more worried about the resistance from the oil than the weight of the flicker.
you could get a tiny sugar scoop spoon and use that as a flicker, i bet it would work great
Yeah I stopped watching as soon as he said (( I welded to the bolt )) kid has a lot more learning about engine to do.
Great video. I got an old lawnmower for free from my dad. It spits and sputters a bit. but I will definitely be trying this with your video as guidance.
It took forever with a file so I used a sanding disc on an angle grinder. I tried to save time by not welding the key slot in but I could see very soon that it was going wonky so I had to weld it back up and cut a new one in.
ATB
James
Sweet! So this looks fairly easy and straightforward. I want to take one of those cheap Chinese diesels off of Amazon/eBay and go the opposite direction with the conversion to fit it to a push mower deck. Shouldn’t have to worry about moving a carburetor. And especially shouldn’t have to worry about dickering around with a carburetor everytime I want to mow the lawn. Wish me luck! I may even make a video on it if I get ambitious enough lol. Another benefit aside from not having a carburetor to deal with is I should be able to run that ol’ gal on used vegetable oil which will be pretty dang sweet I reckon!
Thanking you haha :D
just saved a lawn mower's life, to be rebirthed into a cart/bike/trike/smallthingwithaengine
How was it??
I actually did this on a Briggs and it still works 100% great video
What model engine?
alright thanks so much ive probably asked half a dozen youtubers questions over the last 5 months about this and youre the first to respond
Top job James, the best way to learn by taking things to bits.
Looking forward to seeing the engine with wheels.
atb t ..
Thanks for posting this! Very clear and very good information - keep it up!
haha cheers for the vid man made it really clear how to do it. I’m trying to put a lawnmower engine into dirtbike frame
Thanks mate, Yes I did I thought it was going to kick back bad but it doesn't, I will keep using it till I can find a heavier one.
ATB
James
No problem I know how frustrating that is so I try and answer them good luck with then engine and I've decided to go for belt drive as I can leave the shaft alone and use a tensioner as a clutch which saves money.
ATB
James
that there is crafty and creative!!! way to go brother!!! does it still run good???
your a genius that was a really interesting video never seen it done like that before!!
For the steering system I'm curious how do you plan to link it to the steering mechanics for it? This looks really interesting.
you think this would work on a 6 hp pressure washer ohv?
If you modify it so that everythin is oiled up properly, then yes.
I think they have a tapped crankshaft without a key basically
if your vent line is located below the oil level after engine is flipped
simply plug the old vent hole and tap a new hole above the oil line use jbweld to plug off old line . get a threaded barb fitting and tap a hole for new line
What happens if you don't change the hole where you lubricate the shaft and the camshaft? or if you cut it from above so that it lubricates and does not cover the one below, why don't I have to weld aluminum, what carburetor is that motorcycle from?
Hello y-tubers. I have converted these engines to horizontal. My engine has ran for hours with no problem. I still use the the factory oil slinger, the round wheel that has the govenor weights. the govenor lever does need to be held up or tide up with a wire or something. All I did was fill the engine with lots of oil, it will stop spitting oil out the crankcase breather when the correct level is reached. New groves or oil channels do need to be drilled for the cam and crankshaft. I didn't even fill the factory channels or groves with JB WELD. I did this with a regular drill and drill bit. One more thing, its a good idea to put a long hose on the crankcase breather tube so that the extra oil that is spit out falls to the street or dirt. Have fun!!!! SORRY FOR THE BAD SPELLING.....
julio lausell ..do you just throw the governor away?
How do you fill the engine with oil?
on its side @@CazaVideos005
The oil flicker flicks oil throughout the engine so it stays lubricated. They are fairly easy to make. I've redone a couple engines by now and you do your first 2 then you're a pro
I love your video, I have a 6.5 lawnmower engine that I'm going to do this to.
Engine mount bolt pattern is set up for vertical ! How do you mount it horizontal then ?
i want to know to
If you go to 6:12 you can see that i just left it where it was but I put some gasket maker on the end of it so it sealed perfectly with the crankcase so no oil leaked out then I used it as a gauge to fill the oil, so that when the engine was Horizontal it would just leak out of the dip stick tube which meant it was at the correct level.
ATB
James
Check out how motocross guys balance their rotating assemblys at home, its pretty easy. Most Briggs are out of balance quite a bit, especially when you add an oil dipper.
My engine crankcase breather hole is about 1.5" dia. after removed the pressed in rubber piece with the breather valve. Will JB work for that? Should I cut a 1.5" round piece and use the JB to joint it?
Awesome!! Ive thrown alot of old lawn mower engines away, not anymore!LOL!!
nice build very cool will have to try that soon.😗 sweet
Check the carb fuel bowl like i showed you, check the mounting holes they should give it away.
ATB
James
jamesv2811 I have a craftsman 4.25 hp mower vertical shaft, and I want to make it a horizontal shaft, can you help me?
After removing the blade adapter I just removed all the bolts then gave it a few taps with a rubber mallet and as far as I can remember it came straight off.
ATB
James
can you please explain to me how you fixed the engine to be able to revv it like that? I only can turn the engine on and off.
Use the throttle
how did you get the crankcase sooo clean!!??
Well it has the aluminium flywheel so it does have one just not a very heavy one. I thought it was going to have a nasty kickback but it doesn't at all and accelerates real quick!
How fast would this go
So I done all of it got to the carburetor managed turn it vertical Nd nw it won't even start hade. Put mwe stark plugs nothing don't want to give up on it I want to build a bike help pls
Great video and breakdown of the key steps to take. I’m looking at running the engine on propane so that’ll keep the carb happy as-is hopefully. I’d like to know about the gear ratio you’d suggest please? How many teeth on the drive cog ⚙️ and how many on the axle? To run moderately, so not too quick off the mark and slower high speeder vice versa.
where do you put oil in now? if you blocked the hole?
Can you put a belt over the vertical drive shaft and a pully then weld something on ?
How did you remove the blade shaft? I have a techumesh lawn mower engine and just don't know how to get the crank casing off because the shaft has a collar and I don't known how to remove it to split the crank case? Thanks
All I did was use a angle grinder and grind it away but it took a while :(
Hiya, at 0.52 seconds you mention filling up an oil hole with "J B weld" , iv looked at buying some J B weld but there is about 6 different versions (but only 2 with high heat properties) can you remember which j b weld you used?, thanks and great video.
Thanks very much I'm glad it helped you.
ATB
James
Nicely done buddy
Can it just use the same way I'm scared to pull my engine
There should be a dot on the camshaft and a dot on the crankshaft cog align the two and put them together, I didn't bother as I didn't want the governor just be careful not to over rev it mind you it is pretty hard to kill a briggs but don't hold it on full revs but for piece of mind you could try and put it back together. Just message me if you have any further problems, I should reply within a day.
ATB
James
Can you maybe make an update video showing what the bore looks like? This would be a awesome free way to add engines to my multi engine go kart but I don't wanna install everything for the engine to burn up on the track
i would have thought that you would have needed a fly wheel of such to keep the engine running on the shaft, dose it have a nasty kick back?
Thanks for the nice comment mate glad you liked it :)
Great idea. This will really help me.
+jamesv2811 i heard that it messes the lawn mower if it is on its side and running? is this true
or is your way safe?
Is it still ruining or how long did it work/run
Sweeny I Heard that it ruins it, but msybe his way worked
yea now you say that i can see how it controls the timing, and allign which dots? i know theyre probably not alligned cus when i took it apart the gear on the crankshaft came off. also, while i have your attention, do i need the governor attached to the carb?
How long did the motor last? I would like to do this to big opposed Briggs but would hate to see it blow up in 15 hours.
Awesome work! You sure you got the valves timed properly? It sounds a bit unsteady?
I never checked mate it was a very old engine. Thanks for the kind words.
ddddddddddddddd has
do you need to rotate the fuel tank
That's right without any modification to the internals you will be lucky if it lasts for more than a few minutes.
i was just wondering, did you reattach the shaft that the old oil flicker was attached to? i noticed that when you did show the inside, it isnt there but you modified the bearing for drainage
Hmmm I never had that problem so you mean all the oil will just come out through the ventilation tube? I'm not sure what to do but could you not re route the ventilation tube above the engine so it can't leak out?
ATB
James
That crank case ventalation (below the flywheel on mine) it will throw all the oil when i just sit there and move the flywheel. Will this be eliminated when i hook it up to the air box above the engin?
i was a littl stump thanks for the help just gonaa have to spend sme time on it
do you have to fill in the holes for the cam shaft and the crankshaft bearings?
conor O Hora you dont have to but if you dont it will probbaly ruin your bearings in due time
How did you block the black plastic oil thingy and where did you put it after?
Gregory Dahl dude, youtube is so small, you also replied at one of my comments on the wind powered diving apparatus.
From experience its almost impossible to do this with a Techumesh lawn mower engine. The reason is that turning the carburettor 90 degrees puts it in the way of the exhaust port which means you'd never get the exhaust on.
it takes some clever thinking to do it, what i had to do was flip the carburetor, so that when i move the entire unit 90 degrees it stuck out in the opposite direction. to help clarify, when it is sitting like it should on the mower, flip the carb so that it is upside down, then when it is sitting so the shaft is horizontal do the 90 degree flip and it works. (or should im not done yet)
Christopher Elliott Mounting it backwards? Shit idea...
I've returned to engine. I'm thinking of mounting the carburettor on the exhaust port as its the only way I can attach it for horizontal shaft running. I'm just hoping the exhaust port as an inlet will work with the original inlet becoming the exhaust.
+ELPaso1990TX dude, just put a piece of pipe between the carb and the intake (4 inch-ish)to allow space for the exhaust.
+ELPaso1990TX that won't work because your intake valve is open during the down stroke of the piston to suck in air and fuel. the exhaust valve is open during the up stroke of the piston to push the combustion gasses out.
Maybe you should have threaded were you put the screw (or as you call it the bolt). Just a tip? Keep up the great work though
If you turn a vertical shaft engine, so it you can use it as an horizontal shaft, it will not work or get damaged right?
Might try that with the honda
Aye Yai Yai, i remember when i had a lot of free time to save a few bucks....Have fun now kid, cause these days will be gone!, I'm just sayin...
Cheers tadpole yeah I agree you learn how they work way better. Yep I need to get the clutch which I'm having to get from America, it's cheaper to get it from there and pay the extra postage than from England! Do you think 2mm 1" box section steel would be OK for the frame?
Cheers
James
Yeah but I actually think a better option would be to use belt drive as you can easily find pulleys that will fit on and you can just use a tensioner as a clutch so you have a belt that's slightly too big and then when you want drive you use an idler pulley to tension the belt. Also if you still want to grind it down you have to fill in the key before you start grinding or it will not be spherical!
jb weld its like a paste u mix together to make a special glue
what were you doing at the end to make the engine rev? I have one and trying to covert it but I can't wrap my head around how the engine throttles and stops
Preatty sure that it's the throttle
very well done. Keep up the good work.
so for the bearing you need to do the jb weld or is just for that engine. i dont recall seing one in my 3.5 engine that i converted, maby i just missed it but in other vids i have seen nothing that said to do so but it think you have the right idea. great vid.
Can a vertical vtwin be modded to run upside down?
I'm 11 year old and have an engine like yours. It is very dirty and had been left in the rain for ages. Will I still be able to do this if I clean it out and am I old enough to do this? Good video
Is that a hayter? just it looks identical to the one i'm moding. Do the vents on the carb matter?
Hi great video, my carb has two valves on the top and i dont know which one should be the accelerator could you help me? Thanks
The bigger valve is the intake, you don't choose what one it is, it has to be the bigger one.
I bet this is a dumb question, but is engine lubrication a problem in a 2-stroke with oil in the fuel?
No question is stupid :) It should be absolutely fine though.
jamesv2811 OK, thanks. I bought a crap leafblower from my friend's dad and the engine is vertical shaft. I wanted to stick it on my bike as a sort of an engineering project.
A two stroke doesn't have oil in the crankcase. Just remount the gas tank and a 2 stroke will even run upside down. The fuel pump is in the carburetor , so it doesn't matter where its mounted, as long as fuel doesn't spill out the cap.
Saul Blade the carb needs to be vertical.
@@runninggames771 it depends, some 2 stroke engines like chainsaw can run in any position..
excelent job, and thanks so much for this vid. i had started a vert to horizontal project and was just past the carb when i saw this video but it really helped with the oil flicker, etc
will the oil flicker hit.the cam gear
Just make sure it isn't too long and it should work. You can spin the crank over by hand or using the pull start to check once you've got it in. If it is too long then you could probably just file it down
I wonder if this works on a ohv engine also
I would also like to know how you built in a revving component.
I'm thinking the rotating assembly is NOW out of balance
What is the point of the oil flicker and can you show how to make one ?
what problems did you encounter while doing this and what is your solution to it?
Not worth it! $99.00 @ Harbor Freight.
In order to rev the engine you will see a spring attached to the intake system.
Just pull that and it will rev.
fyi its a oil pump but that what the grooves are for you have to make channel
in th side
Did you J-B weld the oil flicker
Wtf is "crank case ventilation"? You mean the exhaust pipe? Other than that little bit, I was quite impressed with this video. I am going to do this for my 13 hp Briggs and Stratton. Not like I can use it otherwise. I was originally thinking of using bevel gears... But they are a pain in the ass to find.
Will6804 the breather tube that goes into the air filter box next to the carb attaches to the crankcase to allow ventilation, its the same on motorcycles and every other engine i can think of...
Kool and how are you getting the shaft smaller are u grinding it while it's running?
I have the exact same engine what model of engine is it
Idk i mean i could plug it up and maby put it where the brigs vent tubes usualy r.
Nice job man I'm doing this to a 3.5 hp I had laying outside but one ? Did u use the aluminum flywheel?
Good revision James. :p
You just earned a subscriber
how many oil goes in there?
Clever ... !! Thanks for sharing ... !!
israelstinks Thanks for the kind words :)
My lawnmower engine's exhaust-valve-guide crumbled and collected from the muffler. Is it replacable and how or have you an alternate suggestion?
The engine is still in a good condition and do not wish to throw away yet. It's label says: Mums Ja #198544#
I had to stop 1/2 way through. I was getting sea sick. I'll try to watch more later.
would it work for an early 2000's 17.5 briggs and stratton motor
Most definitely. They are all quite similar.
very good. subscribed.
Potatoe or camera ? Just wondering
I converted a Tecumseh engine by adding just the oil dipper and rotating the gas tank and carb. I filled 650ml oil as per the spec of the engine. When I start the engine approximately half of them came out of the breather. But the engine was running ok. Is it ok to run the engine with low oil?
When oil is coming out from the breather tube, it is safe to say the rotating parts are getting lubricated. Don't run the engine for more than like 15 to 20 minutes with out adding like 2 to 3 ounces of oil. I run my engine with used oil from automobiles, its free. The engine must have a breather.
julio lausell yeah lets just put some worn out oil in a good engine and hope it doesn't cause any damage..oil looses its viscosity which is needed for proper lubrication ...
I have yet to blow one of my engines (vertical to horizontal ) using used oil. HAHAHA!!!!!! Viscosity expert. lmfao !!!!!!
lol what you running a cast iron briggs?
well thats awesome im glad its working out for you man i thought tecumsehs were trash..