Fixin to sync my carb's... But I gotta question...

[Bugslayer]

I finished building my manometer, and I'm ready to sync my carb's. I have a t-fitting for #6 vacuum tube to keep the fuel flowing. What about the other two vacuum tube's? (# 3 & 4?) Do I cap these off while I'm syncing the carb's?

[FLATSIX]

Congratulations with your vacuummeter!

When you made a good meter then you have 6 hoses that are to be connected to the vacuumnipple of each carburator.

The one with the vacuumtube to the fueltank has to be with a T to maintain fueldelivery.

On my bike (European version) you only have 5 rubber caps + 1 with a hose that goes to the petcock. So simply connect all 6 to your 6 carbs and start her up - the first times be quick to shut off the engine when you see the ATF-oil climbing too high - adjust that carbscrew till fluid stays on a reasonable heigth without a danger to get into the motor - now you can start to synchronise till all 6 are the closest possible in level.

Success !!

[Kingbee]

Don't worry about 3 & 4, just leave them disconnected while your manometer is connected.

Did you build a 6 column meter?

[SCain]

Here is a tip to keep fuel flowing.
I use a syringe inserted into the #6 line to the petcock to keep the fuel flowing during the carb sync, pull back the plunger and the petcock is open. When I do a carb sync I don't want anything other than the sync tool connected to the intakes.

[Bugslayer]

Congratulations with your vacuummeter!

Success !!

Thanks for the tips. I'm anxious to see how it works.

[Bugslayer]

Don't worry about 3 & 4, just leave them disconnected while your manometer is connected.

Did you build a 6 column meter?

That's what I was wondering about. Thanks!
Yes, I built a 6 column meter.

[Bugslayer]

Here is a tip to keep fuel flowing.
I use a syringe inserted into the #6 line to the petcock to keep the fuel flowing during the carb sync, pull back the plunger and the petcock is open. When I do a carb sync I don't want anything other than the sync tool connected to the intakes.

That's a good idea. Thanks.
 While we're on the subject of intakes, what do you use as plugs on your intakes. I've been useing soft rubber caps, but they always seem to crack. I thought about useing a short piece of fuel line, but am unsure as to what to plug them with.
Thanks again.

[Ricky-D]

I use vacuum line of the correct size.  Each carburetor has it's own hose and the hose is long enough to grab easily to facilitate hooking up to my setup. Each hose is plugged with a short piece or rod and the piece is in good and tight. I guess you can tell that I have desmogged. I just push all the stuff back under the air box when I'm done, and you can't even see it.

[Bugslayer]

I use vacuum line of the correct size.  Each carburetor has it's own hose and the hose is long enough to grab easily to facilitate hooking up to my setup. Each hose is plugged with a short piece or rod and the piece is in good and tight. I guess you can tell that I have desmogged. I just push all the stuff back under the air box when I'm done, and you can't even see it.

Guess I need to get out tomorow and pick up some vacuum line. Thanks for the info.

[FLATSIX]

I did the same as Rickey-D.

I used fuel hose (with the outside bread) inside 4 mm. 6 times +/- 45cm (in fact a little too long, but does not matter).

In a aquariumstore they sell plastic rigid hose in lengths of 1 meter - bought 1 meter outside 4mm. and cut 6 times about 1"- put this piece on top of fuelhose and at the other end I pushed the OEM rubber piece on that is normally at the intake.  Till now everything stays on its place and it is easy - no clamps etc. - when you synchronise just pull of the rubber OEM end and insert your hose of the machine on the aquariumnipple and ready to go - job finished, put back the rubber stop and hide everything and you are done - it is like in a good dream !!

[Al buquerque]

Kingbee's advise to leave #4 and #6 "disconnected" will be disasterous on a six pipe balancer, unless you PLUG the tubes for 4 and 6.

Any disconnected or unplugged tube allows ambient air pressure into the chamber and you will suck all the fluid into the other cylinders.

Be Careful!

[BonS]

Here is a tip to keep fuel flowing.
I use a syringe inserted into the #6 line to the petcock to keep the fuel flowing during the carb sync, pull back the plunger and the petcock is open. When I do a carb sync I don't want anything other than the sync tool connected to the intakes.

That's a good idea. Thanks.
 While we're on the subject of intakes, what do you use as plugs on your intakes. I've been useing soft rubber caps, but they always seem to crack. I thought about useing a short piece of fuel line, but am unsure as to what to plug them with.
Thanks again.

check this out:  http://redeye.ecrater.com/product.php?pid=3301919

[Bugslayer]

Kingbee's advise to leave #4 and #6 "disconnected" will be disasterous on a six pipe balancer, unless you PLUG the tubes for 4 and 6.

Any disconnected or unplugged tube allows ambient air pressure into the chamber and you will suck all the fluid into the other cylinders.

Be Careful!

"...Don't worry about 3 & 4, just leave them disconnected while your manometer is connected..."

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I'm pretty sure Kingbee is referring to the vacuum lines on the bike, not the manometer.
Thanks for the heads up, though.

[Al buquerque]

I just responded to another post on here refering to the lines disconnected. I forgot that I did the de-smog on my bike a long time ago, so I no longer have those lines.

My bad....sorry.

[Bugslayer]

I just responded to another post on here refering to the lines disconnected. I forgot that I did the de-smog on my bike a long time ago, so I no longer have those lines.

My bad....sorry.

I think we both responded without seeing the other post...LOL.. It's all good.