Balancing Carburettors with home made manometer

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13 жыл бұрын

Balancing/Syncing the carbs on my '90 suzuki across gsx250f.
A run down on what the manometer is made from and how it works, plus a rather length demonstration on it working.
As you can tell its ultra sensitive. the adjustments were all less than 1/32nd of a turn.
Excuse my terrible commentating. Thats impromptu video'ing for you :D

Пікірлер: 58

@michor10 12 жыл бұрын

I have no idea why I just sat here watching two bottles for almost nine friggin minutes, man! That's insane. Hypnotizing even.

@Summerride 11 жыл бұрын

I tried this method on my 1985 Kawasaki 600R and it worked just fine. Got the four carbs synced in 5 minutes. Thank's for sharing this vid !

@stephanetalbi8915 11 жыл бұрын

just tune my carbs on my v-star 1100, work just fantastic, reusable and inexpensive yet costless,thank you HyzerGlen

@stephanetalbi8915 10 жыл бұрын

Thank you for the carb sync. tool, I did do one exactlely the same and used it on my v-star, works just perfect, I'll keep this precious diy Tools and show it to my buddys Thanks for your help Steven

@lowsideluke 7 жыл бұрын

Fantastic guide, dude. Thanks a million for posting it up!

@DocBlasto 11 жыл бұрын

Here's a tip for making this setup a little safer: Don't use water, which will suck water vapor into the carb (changing the mixture) or suck actual WATER into the carb if the bottles get tipped over (you don't want that). Instead, use Marvel Mystery Oil or a similar oil-based additive. One: It's red, which is good for visibility. Two: if it gets somehow sucked into the engine, it won't hurt anything! It'll just burn with the fuel, maybe smoke a bit.

@turk38922 3 жыл бұрын

Preciate ya dude!! Preciate this thread. I'll be syncing my 2006 Ninja 500 in a few days.

@Pertamax7-HD 4 жыл бұрын

ok sir

@PaNiC88 10 жыл бұрын

Hey man this helped me so much thanks for explaining so well great job on the video

@TheStinger30 12 жыл бұрын

i ballanced my carbs in my across this arvo. i bought a "motionpro carb tuner" took about 20 minutes all up to get the job done from start to finish. thanks for the video.see how it goes now and if it uses any less.more fuel.

@donfinch862 6 жыл бұрын

Bloody brilliant, will try that on my new ITB's

@KyleBaker 12 жыл бұрын

It actually varies. On my '82 yamaha inline 4 (xj650), you start with 3, then sync 4 to 3, then 2 to 4, then 1 to 2--if I remember right! Looking to do this procedure myself soon. Did a 'bench sync' and that's the order I used then.

@koratsteve 13 жыл бұрын

Thanks, this worked a treat on my Kawasaki gpz 500s/Ninga500r.

@HyzerGlen 12 жыл бұрын

None of the above :) There are three screws in this particular bike. 1) The air/fuel screw is set to whatever the manual says. You should rarely need to adjust this. 2) The throttle stop. I set it a bit above idle for the procedure. 3) The balance screws - they sit between the bank of carbs, which is what i am adjusting throughout the vid. On most other 4cyl bikes there will be 3 of them. On this bike, only 1. Will definitely be doing a new and more clear video shortly :) thanks!

@otooled 11 жыл бұрын

Two comments: As far as I can see the carburretors will be balanced when the level is UNCHANGING (indicating that the pressure above each fluid is the same). NOT when the fluids are at the same level. HyzerGlen says this but it is easy to miss. Also - He says that when they are in sync the revs DROP to their lowest level. This can't logically be right. When they are in sync they will work better together. Shouldn't the revs rise? Not a good explanation of how to make it but still very useful

@clayatkins6702 10 жыл бұрын

Good job, I should make one of these for myself. very handy.

@redneckhippiefreak 11 жыл бұрын

Water is used to clean the head and valves and in some cases adds power.. no harm just a lot of back fires and sputtering if not atomized correctly.. The old spitfire planes got that name from the WATER injection system that added lots of horse power. " Push the button and climb like a wild cat" was an expression I've heard when relating to these systems.

@otooled 11 жыл бұрын

Concerns about fluid getting sucked into engine. Only use sufficient fluid or position the tubes so that when one is nearing the top the level of the other falls below the tube (and is then sucking on air). Tape them or fasten them to a board or box so theat they can't fall over. Elsewhere people have questioned the use of water and suggested petrol.. DON'T. It is NOT the nature of the fluid water/oil but the incompressability of fluids which will cause problems in any case.

@buddha65281 13 жыл бұрын

Hey guys, this is a great idea but just go buy a set of "Carbtune" syncs... I did and they are not expensive. I know know this bike but normaly the carbs SUCK the fluid up according to the vacum. I would not want to suck up any fluid into my Hayabusa carbs. Just my little .02.. did enjoy the video though! You are right I have not met a bad person from down under yet... props to Australia!

@TheStinger30 12 жыл бұрын

HyzerGlen, mate im eagerly awaiting to see a new video on this, i intend to ballance my suzuki across in the next few weeks. i might even make a video of it myself for youtube

@HyzerGlen 12 жыл бұрын

Cool! I'm doing a yamaha zeal at the moment so i'll have a new vid up in the next week or so :) its much harder than the across so hopefully a bit more applicable for most people. The across is a piece of cake the balance! good luck. They run so much better for it :)

@HyzerGlen 12 жыл бұрын

In a 4 cyl bike with 4x carbs, I believe you sync the outside 2x carbs with each other then sync those two pairs with each other. :)

@PeaceLoveandMusic04 12 жыл бұрын

good video helps with figuring this stuff out

@HyzerGlen 13 жыл бұрын

@sackcheck Yep! Its a suzuki across which is pretty popular around here. The fuel tank is under the seat / over the rear wheel and where the tank normally goes is actually a storage compartment So the batteries plonked up on top there. Have a look on google (suzuki across / gsx250f) Its pretty cool :)

@mikesmith4468 10 жыл бұрын

Nice pretty smart to know how to do this.

@Summerride 11 жыл бұрын

On my old Kawa , the throttle cables come from the center so the 2 center carbs are synced first , then you sync the two left and next the the two right together. I guess it depends how the bike is made.

@HyzerGlen 13 жыл бұрын

@buddha65281 Hey thanks for the comment! Yeah totally buying the right tool is the way to go, but hey, jobless and penniless for now so desperate times as they say :P Two quick things tho (had a huge reply but youtube ate it lol) this is mainly intended for 250s and cheap clapped out bikes we have to stay on in aus under LAMS laws plus with this method you can't suck up fluid, cause the total volume of fluid even in one bottle still doesnt reach the tube to the carb if you get what i mean!

@BrentTheAussie 11 жыл бұрын

I have set my mixture screws to the recomended setting then i played around with that til the bike felt the most powerful

@daveo138 12 жыл бұрын

Great idea, thanks, but it wasn't clear at the beginning that the tubes from the carbs only go into the very top of the bottle and it's the balance tube between the bottles that is under water. Soon worked it out though.

@combinbain 9 жыл бұрын

Nice video! I can't get one point: can I make this calibration even without cleaning the carburators first? I mean, I have my bike in here on the side stand, can I just try out your method or I need to do anything else first? thanks!

@TheStinger30 12 жыл бұрын

cool, thanks for the feedback

@BrentTheAussie 11 жыл бұрын

Thanks Dogastrophe, I ended up figuring that out and making the design successfully but does he change the mixture screws or the balance screw? I ended up bench balancing the carbies (taking them off and using a needle to adjust the butterflies to open at the same time) and the bike runs much better and kets an extra 20km's per tank..Is there a way to use this method with the manometer to adjust the mixture screws or is it just for the balancing?

@TheStinger30 12 жыл бұрын

cool, thanks for the feedback. also im getting about 172kilometers from my maintank before it runs dry and i need to flick to reserve.i have seen some say they get about 200 kays out of the across.do you have any idea what the norm is for the across for fuel mileage?im stil wating on my manometer to get here from the usa.cant for it

@sergesmith2863 8 жыл бұрын

OMG!! I have been fighting my carbs on my Rotax 912 in my kitfox airplane "this it fucking awesome!!!!"

@bogusman2121 11 жыл бұрын

1 with 2, 3 with 4 and then 2 and 3...for all 4 carb. bikes!

@Ruskinrowe12 12 жыл бұрын

The air bypass screw to balance or the throttle stop screw? My take was set the throttle stop screw both to the same, then adjust the air bypass screw toile bike run about 1000rpm, then balance by adjusting air bypass screw. Is this right? Or can you do a video showing the carby end? Thanks.

@BrentTheAussie 11 жыл бұрын

Hi I watched this and could not see where the pipes went and ended up doing it wrong, I shall reattempt but. (I have a 98 across) is it that the hoses go from the vaccum part to into the bottle? the pipe does not go into the water does it? does the top of the bottles have to be sealed or can the pipes just dangle in there? there is a pipe that goes from 1 bottle into the other (is that in the water?) Please reply

@trondwell13 10 жыл бұрын

sirhaggardly - you make a four bottle version

@johna6968 12 жыл бұрын

Very clever... : )

@fabisaavedra9977 11 жыл бұрын

donde van conectadas las mangueras es en la entrada del combustible o en el drenaje gracias

@martythefrenchie 11 жыл бұрын

on a 4cyl carb number one is the baseline carb. hence its not adjustable so the other 3 need to be balanced with it.

@mikecb900 11 жыл бұрын

hi should i be using glass bottles as im using plastic and they are collapsing as i start up thannks mick

@L2fish 10 жыл бұрын

i had a spearco water injection system on a camaro. they got it from the ww2 aircraft

@davnroxie 11 жыл бұрын

Absolutely brilliant! I have a 75cb750 That I have had for years and I know the carbs need synced. I can't wait to try this!!!

@sackcheck 13 жыл бұрын

wow your battery sits on top of the engine

@billioniii 12 жыл бұрын

this water is inside the bottles???

@therider3939 6 жыл бұрын

2 stroke motor oil works better than water less sensitive

@Bajnokable 9 жыл бұрын

Red White Green= Hungary :D

@ergner 8 жыл бұрын

How can carbs air-fuel adjust?

@davidkuczynski8291 7 жыл бұрын

ho do you cincrize the rear carb to front carb

@HyzerGlen 12 жыл бұрын

Sounds about right. I have gotten 200k out of a tank but that was bone dead empty, and only achieved by filling the tank to about 20mm below the top of the filler neck and running it in 6th gear everywhere :P They are a heavy bike for a 250 so they will never be as efficient as the others.

@user-ez9bd9rf3h Жыл бұрын

Налить антифриз и насыпать блески., что бы было видно в трубке.

@laurielee2039 6 жыл бұрын

@marttin.8569 Жыл бұрын

Pea

@phxxr650r 11 жыл бұрын

hold the camera still

@motoapasionados 11 жыл бұрын

VERY VERY BAD CAMERAMAN!!!!!!!

@ckritzberg 9 жыл бұрын

Correct: Your narrative of what you did with the carburetors (left/right or front/rear; leaner or richer fuel mixture) is EXTREMELY non-existent. So, you're leaving it up to "us" to experiment... without giving insights as to what you're doing with the carb adjustments (up/down... to raise or lower one side or the other.) Poor narrative.

@JasonWW2000 9 жыл бұрын

What he's doing is right in the title. He's balancing the 2 carburetors. His homemade manometer is hooked to the bikes vacuum ports and he's adjusting the throttle linkage that opens both carbs so that at idle, both carbs are creating the same vacuum or both carb butterflies are opened exactly the same amount. All the details of how to do this will be in a factory service manual for your specific bike. The only difference is this fellow is using a much cheaper version of a rather expensive tool that dealers use and he is getting the same exact results. If you have specific questions, let us know and we can help.