Balancing Carburettors With Home Made Manometer




What do you think about this video?

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

kfs240sx: Hey man this helped me so much thanks for explaining so well great job on the video

Dan Barclay: sirhaggardly - you make a four bottle version

Timosbi: just got a virago 400 did your manometer trick with two coffee jars. it worked perfect! it was easy. Thank you 

stephane talbi: 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

mike smith: Nice pretty smart to know how to do this.

L2fish: i had a spearco water injection system on a camaro. they got it from the ww2 aircraft

HeavyHitter5150: So in which order do you sync. them? Both outside then both inside? Or is there a manufacturer recommendation for each bike?

sirhaggardly: Hey this looks like a great design for a homemade manometer - no issues of the fluid getting sucked into the cylinder. However he water vapour that is being sucked into the cylinder is going to affect how the fuel burns, essentially changing your air/fuel mixture. You'd probably get closer by using oil instead of water.

superchase08: What screw do you adjust to balance them??

jimmy Forero: VERY VERY BAD CAMERAMAN!!!!!!!

redneckhippiefreak: 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.

Dogastrophe: I wish I could draw this for you ... may make more sense. Each stopper has two holes - for the tubing that you are going to run to the carbs, push in just far enough clear the stopper. Connect the two bottles by making an upside down "U" with another piece of tubing - this piece goes down into the bottle (~3/4+/- of way). You will want your set up to be air tight so check stopper in bottle and tubing in stopper (and tubing onto carbs). Hope this made sense. Cheers

michor10: I have no idea why I just sat here watching two bottles for almost nine friggin minutes, man! That's insane. Hypnotizing even.

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

Chill Will: if you held the throttle at 2k it would probably level perfect. That bike sounds GOOD. Nice video.

ThrasherGnar: moron lol

David OToole: Agree with RedNeckHippie.

HyzerGlen: @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 :)

HyzerGlen: 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: @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!

Théry S.: 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 !

David OToole: 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.

Jay B: Very clever... : )

Smalls62: that, sir, is impressively resourceful.

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

HyzerGlen: 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.

TheStinger30: cool, thanks for the feedback

Kyle Baker: 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.

daveo138: 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.

davnroxie: 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!!!

Jerrold Adler: 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.

PeaceLoveandMusic04: good video helps with figuring this stuff out

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

TheStinger30: 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

Ruskinrowe12: 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.

HyzerGlen: 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!

Brenton Telford: 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?

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

phxxr650r: hold the camera still

buddha65281: 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!

sackcheck: wow your battery sits on top of the engine

HyzerGlen: 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. :)

TheStinger30: 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

billys TA: this water is inside the bottles???

rwc297: VERY helpful video! you just saved me about 400.oo dollars u.s. by not having to take my shadow vt700 to the shop? kinda funny in that the last time i needed help with a diesel genset a man from australia helped me. nice people down there!

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

Théry S.: 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.

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

Brenton Telford: 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

Shrimps: Thanks man, I appreciate the feedback. The reason I was able to get sales is because I offer rare shrimps for sale. Not many other online place is willing to take the risk at shipping high priced shrimps. That is my way of earning online.
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