Carb sync tools - what's better, the cheap gauge model or Motion Pro fluid type?

[hannibal]

Wish I had read this last week! Just got my MotionPro from Z1 on Friday. Now I'm considering returning it and ordering the Carbtune.

While I don't plan on tuning carbs often, I don't like the idea of sucking the liquid into the motor. Of course, it just burns off, but I'll eventually have to replace the liquid after several uses. I like the maintenance free aspect of the Carbtune.

[chuck hahn]

Yup....I would see if they will do an exchange before you even take it out of the box. Ive read a ton of posts where folks have revved the bike and sucked it dry in seconds..and then its too late.


I should add that mine is the Carbtune Pro...may be a little difference in price.

[cowboyup3371]

Know that you'll also sync the carbs after every valve adjustment; plus I tend to check mine at the beginning of the year.

[hannibal]

Know that you'll also sync the carbs after every valve adjustment; plus I tend to check mine at the beginning of the year.

Sold on the Carbtune!

[hannibal]

The Emgo carb sync is currently available from Z1 for $65. In my 4 months of watching them, they had been backordered.

I've seen a youtube vid of them in use and they seem well behaved. I'm tempted to get a set, though I have a carbtune I haven't even tried yet.

[Steve]

... I finaly read the instructions and it stated not to operate over 1500RPM, which is not adequate.
...

Can you please explain to all us noobs why 1500 RPM is not adequate?

.

[mrbill5491]

The Emgo carb sync is currently available from Z1 for $65. In my 4 months of watching them, they had been backordered.

I've seen a youtube vid of them in use and they seem well behaved. I'm tempted to get a set, though I have a carbtune I haven't even tried yet.

I've come to the conclusion that just about anything EMGO sells is pretty much low end and junk. Go with the Morgan carbtune.

[mrbill5491]

Can you please explain to all us noobs why 1500 RPM is not adequate?

.

Yeah, curious about that too. You are setting your carbs at idle that's where they are synic at. Anything above that overrides the idle circuit.

[hannibal]

I've come to the conclusion that just about anything EMGO sells is pretty much low end and junk. Go with the Morgan carbtune.

Thanks for the reply. I had a moment of "they're hard to find so I better buy them now".

[Crankthat]

Bought a unit from E-bay a few months ago.
It is one vacuum gauge hooked up to a manifold.
The manifold has been drilled and tapped to accept needle valves.
You open each valve with the corresponding dial on top.
Therefore you never need to sync the gauges as you are using the same gauge for each carb.

I was going to buy the carbtune pro when one of these came up for auction.
Mine is the same except for the mounting position and my numbers are read while side-ways from the one pictured.
It is meant to be permanently mounted on your bike.

I paid around $25. for mine in the same if not better condition then this one.
The one pictured below was up for auction for a unremembered by me ridiculous price.

[IMG][/IMG]

To me it looks like something that could be duplicated at home if somebody was to put their mind to it.
Not necessarily with the same materials.
Simple inline valves for each hose.
Possibly a section of PVC pipe capped as your manifold.

[posplayr]

Bought a unit from E-bay a few months ago.
It is one vacuum gauge hooked up to a manifold.
The manifold has been drilled and tapped to accept needle valves.
You open each valve with the corresponding dial on top.
Therefore you never need to sync the gauges as you are using the same gauge for each carb.

I was going to buy the carbtune pro when one of these came up for auction.
Mine is the same except for the mounting position and my numbers are read while side-ways from the one pictured.
It is meant to be permanently mounted on your bike.

I paid around $25. for mine in the same if not better condition then this one.
The one pictured below was up for auction for a unremembered by me ridiculous price.

[IMG][/IMG]

To me it looks like something that could be duplicated at home if somebody was to put their mind to it.
Not necessarily with the same materials.
Simple inline valves for each hose.
Possibly a section of PVC pipe capped as your manifold.

There cannot possibly be a good reason to try and duplicate this design. You would be better off using a differential pressure gauge to compare two port pressures at a time.

I would create a manifold for 3 ports (use vacuum "T"s and JB weld to create a bleeder; drill to about 1/16") to serve as a reference and then the 4th would be the one to be adjusted. You adjust the 4th till it is in line with the average of the others, keep going around till you are done.

The best is to see all 4 at once and adjust one at a time to be in line with the rest, but that costs and extra $40.

http://www.ebay.com/itm/DWYER-DIFFERENTIAL-PRESSURE-GAGE-GAUGE-METER-AIR-MINIHELIC-II-30-PSIG-MAX-NEW-/151801520371?hash=item23581360f3

http://www.ebay.com/itm/NIB-Parker-Differential-Pressure-Gauge-PN-DPG-15-WQ-146/361194488008?_trksid=p2047675.c100009.m1982&_trkparms=aid%3D777000%26algo%3DABA.MBE%26ao%3D1%26asc%3D32933%26meid%3Da99dfaa2a2a64ea4a823c75196f4cf51%26pid%3D100009%26rk%3D1%26rkt%3D1%26sd%3D262009030900

FYI, I posted this to help satiate the miserly tendencies of the populous.

http://www.thegsresources.com/_forum/showthread.php?234975-Poor-Man-s-Carb-Sync&p=2222453#post2222453

[Katarat]

Do you have a make & part number for that adjusting screw driver ?

[cowboyup3371]

Do you have a make & part number for that adjusting screw driver ?

Here's one from Z1

http://www.z1enterprises.com/ItemDetails.aspx?itemDescription=Carb+Adjustment+Tool+Set&item=TU15-0469

[mikerophone]

And here is one on Amazon Motion Pro PN 57-8022 $23

[Katarat]

Thank you !