Mikuni Carb Install on Predator 212 Coleman GX200 & Others - How To
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- เผยแพร่เมื่อ 31 ต.ค. 2020
- Here are the basics for installation and tuning of the Mikuni (Chikuni) carbs for Predator 212cc engines. This applies to other small engines. If you're upgrading your Coleman CT200U with a Mikuni, this is a helpful guide.
www.ombwarehouse.com/mikuni-c...
For Mikuni carburetors and other small engine parts, check out www.ombwarehouse.com
Your channel should be everybody’s go-to. You don’t use flashy lights, heavy editing, and crappy staged jokes. Not to mention you actually prove to us you know what you’re talking about. Lot of people only “look” like they know what they’re doing.
You explain it better than every TH-camr out there and not editing videos showed me every step thanx 👍
Thank you very much!
He's my go to guy when the more techincal people make my head spin.
I watched at least 10+ people put these Mikuni and their clones on a 212 Predator and you by far Sir make the Best Videos out there. You are like me. I want things done RIGHT the FIRST time and that saves me hr's of cussing and loss of time...Thank you very much for your videos..Subbed & Glad I found you.. Be well & Stay Safe..
Great job very easy to follow and understand! Keep up the way you do you video's they are great!
That should be"Keep up the way you do YOUR video's the are great!"
Sorry for the typo! 😉
You need to put a permanent marker into the manifold and mark the carburetor to dremmel it a smooth slope. I get more air, moved up a jet, and man, I can feel the power difference! 😃
I port match all of my intakes and headers including the gaskets. I am just showing how 95% of the people should install these
THANK U BOSS 1OO% SOLID INFO KNOWLEDGE IS POWER LETS ROCK THIS JOINT!!!!!!
Great video, just purchased my first 212 predator with stage 2 kit. Cant wait to install it and put it on a mini bike. BTW Thank you for explaining how the Mikuni Carb works and the possible vacuum leak issue. it and put it on a mini bike. "First time looking at it out of the box, I was like how in the hell does this work..lol"
I feel dumb asking. But how do you hook the throttle up to the needle???
YOU'RE THE BEST DETAIL
I bought an aftermarket manifold from Amazon. It looked just like most of the others. out there.....BUT I could not get the carb o-ring to center on the manifold with the carb clocked level. To get the o-ring in center I had to have the carb tilted a bit. I demand perfection, so I built a 1/4 " spacer plate that allowed the O-ring to seal on it. Then I used a gasket to seal the plate to the manifold. So far it has worked great. I would recommend buying your manifold from a reputable source like OMB or GPS Ect.
"It should only go in one way, unless you have a large hammer" 🤣
Great info
Great video! I just wanna know what is up with all those wrenches on the wall?
Hi Eric!
Great video! Was wondering where did you get the chrome bling from? Especially interested in the chrome pull start handle...does omb sell the chrome pull handle?
So the choke lever we only put it up to start a cold engine then put it back down when it’s warmed up?
I got one of these Chikuni carbs for my mini bike and I was watching Bahnzai's video on them and he said that the "choke" lever DOWN meant the choke was on and the and the lever UP meant it was off. Here in your video it's stated as the opposite way. I shall have to test and report back. In my mind your method sounds correct because on cars with manual chokes, we would lock the flapper closed when starting on cold mornings to keep out the cold air. This, by default, fed more fuel than air in to the engine for a better chance of the engine firing up sooner. Cold cranking an engine for 30 or 40 seconds or more was a sure fire way of wearing out all the metal-to-metal surfaces inside the engine prematurely.
hey gray goat good morning, i have two honda engines i 5 horse and the other 5.5 horse. would it be safe to run a stock mikuni or any other carburetor? both of my engines are stock and id like to keep them that way for reliability purposes, I've done a good number of kitted engines for other people in the past and i want something different. any recommendations? thanks for the advice and keep those awesome videos coming< catch you on the next one.
Hi there, I would like to ask many questions, I am new to building 4-stroke OHVs for my motorized bicycle. What is that big tube arc coming out from your cylinder head? I thought for open cylinder heads, you just use a billet air filter? I have a 4-stroke 212cc OHV but its not a predator, and my open cylinder head does not have a metal mouth sticking out like the predator 212cc where one can put tighteners to help hold the tube in place, instead it just has a hole with like interlocking teeths inside the hole and i just have to stick in a breather tube and the teeths tight grip seems to help hold it in place. I am unsure if sticking in a breather tube with a billet air filter on the other end is good enough to stay intact because i plan to use the engine for a motorized bicycle and its going to rock a lot. I also would like to ask about the governor, after putting the mikuni carb you seem to leave the governor alone entirely. For my 212cc ohv stock engine, the throttling was attached to the governor connected by springs and that they are supposed to work together?. Can i leave the governor out entirely after buying a mikuni carb? I am new to engines and unsure how a governor thoroughly works inside the engine, but as far as I know, it controls the oil being spewed out in the engine at different rpms, and that it regulates rpms and can make the engine automatically shut off if not properly governored. I am afraid to run into issues of my engine automatically shutting off or not being able to reach higher rpms, if i do not connect my carb to my governor because they seem said to work together in my stock model. or am i missing something? Can i just buy a mikuni carb and cable it to my hand throttle and leave the governor untouched or unconnected? pls help thanks.
Ed can you tell me if I can install, with success, a 28mm tm mikuni flatslide on my 212 tilly with stage 1 and billet flywheel?
He is the Gray Goat.
Just got mine from GPS. They advertised bolts but did not include them. Saweeet.
The description website link you have listed doesn't have the main jet included like how you show in the video.
I have a 26mm carburetor I got from Amazon. I have a 125 main jet and a L38 idle jet in the carb. It's hard to start when the engine is cold. Crank pulls easily, valves are 18lbs and lashed at .003 and sparkplug gaped at 31. It seems that it doesn't hold an idle from the previous day. I have to increase the idle to get it started and then turn it down to 1200 rpm when it warms up. What is it that I'm doing wrong. Your input would be greatly appreciated.
Just out of curiosity im following your video. I made sure the oring is matched up but once we put carb onto engine you said you see its not level and went to readjust carb so wouldnt you be moving the oring and causing a vaccum leak?
Recommendations on what size carb i should order for a 212cc engine? I got a 26mm carb and it only idles high and wants to runaway from me. I was thinking of going down to a 24mm, but I'm wondering should i go down to 22mm instead?
Can I do it without putting on the engine then taking it off to fix it?
So is there a noticable difference in power with these Mikuni type carburetors over the Stock Appearing bored out and modified race carbs ? Like will the cheapest Mikuni still blow away the most expensive Stock Appearing Race Carb ? Curious cause I have a .650 venturi SA Race Carb on my Mini Bike now and it does do a good job and hauling my fat ars around but always wondered if i switched to a Mikuni style Carb would it be even more powerful than what I got now ?
Where did you get that sparkplug wire from
Hi Sir I have a issue my throttle cable is too short by about 2 inches on gokart I'm running mikuni carb I'm using the 75 inch cable I don't see anything longer what options do I have??? Thank you
What to do from mid range to full bore ❓❓❓❓❓
Im new to this but i bought an aftermarket mikuni and an actual mikuni for my predator motors. THey both leak gas from overflow and the breather intake. im lost . any ideas??
Mine leaks out the airfilter also have no fucking clue I’m changing back to stock carb but gonna upgrade it and just aftermarket airfilter
@@wyattimpecoven the float bowl is probably not level. Take it apart and see if it level
If it leaks gas from overflow check float bowl. Or valve float could be bad. Where i live you just cant buy a valve float. Gotta get a new Mikuni
When you aligned the carb to the adapter and set it, when you leveled the carb didn't it come out of alignment?
Keep the bolts snug enough so it can’t move and tighten them down. It may take a couple of tries but worth the effort!
Why start off by changing the main jet? How would I know if I need to change my jet out? Thanks.
The kit we offer has the main jet included that works for 95% of these engines. You are always welcome to try the stock jet and see what works best for you. We like to start with a 130 main and a 15 pilot to start your tuning journey.
What could cause my engine to die out higher rpm’s? I have bigger cam, mikuni carb and the other basic stuff but it dies out when it revs higher and does not have the governor
If the carb is having the engine running very rich, this will cool the head and foul the spark plug. I would guess if you pulled the spark plug the electrode will be black and sooty. Raise the e clip on the needle all the way to the top and test from there
Lol unless u have a really big hammer lmao that was great
What about the governor? Do I keep it in the engine?
Performance carb can be kept at a minimum RPM?
You cannot use a governor and a slide carb unless you are very creative! A Mikuni 22 is a performance carb that should be bolted to a performance engine. The carb wants to see more compression and a bigger cam to operate properly. The additional rpm capabilities of these carbs will stress the connecting rod and flywheel beyond their limits with potential failure that can hurt you. I don’t recommend this type of carb for an otherwise stick engine. Performance is built from the inside out, not outside in!
@@TheGrayGoatGarage I understand, but the original Honda carb and the NOS carb I just bought still want run unless the carb is on choke. And the new carb has been cleaned and gas tank inside is like new. The Honda 6.5 engine is new
I guess I can put my 440 2 stroke on my go kart. it has a 32mm mikuni carb
Do you have those pull start handles in black?
I'm gonna go look.
That handle was custom made by a friend of mine. One of one!
@@TheGrayGoatGarage Bah
It looks really nice.
How fo you know when it’s running optimal will the spark plug also tell you ?
Reading the spark plug is the best way to know the carb is correctly jetted! We can only tell a little by the throttle response!
Always read the plug!
@@TheGrayGoatGarage i pulled mine and is black
I've been running my 212 on a bypassed governor. I jus got a mikuni carb. Would I be able to install it even tho I haven't physically removed the governor? Thanks
I wouldn't even attempt that. You are wanting to bolt a performance carb to a stock engine. Performance is built from the inside out, not outside in.
The stock rod and flywheel are not designed for higher than governed rpms and will fail.
The stock cam does not have enough lift or duration for a larger carb.
I am a minibike guy and I will not ride a minibike with an ungoverned engine unless I know there are billet parts installed
@@TheGrayGoatGarage Agree but the reality is that guys are watching videos that prove of the gains from a slide carb over the stock carb, stock cam or not. So it's expected that in many cases guys are going to put a slide carb on a stock engine. They're going to get a $40 Chikuni carb kit before getting $120 plus worth of rod and flywheel no matter what we tell them. We can only hope that valve float or gearing prevents them from blowing things up.
@@Deucealive75 I know! That is all we see on Facebook these days! I hate it, but what can we do?
Now if i got stage 2 kit where should my needle be set on my 22mm carb
There is no formula for this. You have to “test and tune”. Nobody can know but you!
Thank you
Unfortunately OMB don’t ship to Alaska
do you still rip people off paying for 2 day shipping only to put in standard shipping label? asking for a friend.
You didn't fell like showing how to plumb it? Where do all those extras lines go?
Sorry, I felt that showing where overflow and breather line4s go would insult most people that know what those hoses are. I would suggest you make a video and link it here. That would be very hyelpful for all of us.
@@TheGrayGoatGarage Ive never dealt with a mikuni before. Ive been watching about a dozen videos trying to figure out how to plumb it and nobody shows that step. Before I putchase one, I need to be sure I can properly install it and operate it.
It's told me nothing about tuning my carburetor 😮
That is why the video says "Mikuni Install" and not "Mikuni tuning".
What pilot jet did you use?
38 pilot jet
@@Lo_Deez THX
@@TheClintmeister no thank you brother. I appreciate your knowledge. I wish i had u n my phone. Id pick your 🧠. I have a couple builds, and with builds come questions.
GRAY GOAT I NEED ENGINE ADVICE I WOULD PAID YOU IM DOING A LOT OF UP GRADES AND NEED ADVICE THERE'S NO ONE HERE IN CHICAGOLAND
Im in Detroit i do work
You do no”adjust” a pilot jet lol you get a bigger or smaller size 🤦🏼
U have a Chinese knock off mikuni carb which is why it's designed poorly with the fuel mixture screw that goes right above the head on my pitbike I got the legit one which has a completely round Venturi tube the knock off is an oval and the legit mikuni uses an air screw instead of fuel
3 minutes in in your hand is in front of the part you're working on, so a guy like me don't know what the hell you're doing
Hi Robert
It is very difficult for me to work on things and be able to show everything. I wish I had multiple cameras and a make up trailer too! If you have any questions you can always email me at Help@ombwarehouse.com
Can you zoom in a little bit so we can see what the hell you're doing please 🙄
What he is saying is, put the intake on the carb first no matter how much it breaks yours b***s to get the bolts on the engine after.
I came to watch you set this whole thing up and you didn’t even connect any hoses or get it running and tuned lmfao waste of time
Thank you for the input. Please link me to your videos do I can see how it gets done. I am always willing to learn
Hilarious, your wisdom is taken for granted by some these clowns. Great videos thanks for taking the time and explaining things thoroughly and properly. The chrome on that engine is bitchin by the way 👍🏻