Kawi2strokes.com Forum

Enthusiasts from around the world dedicated to the preservation and ritual flogging of the infamous Kawasaki 2-stroke Triples
It is currently Fri Mar 24, 2017 8:57 am

All times are UTC - 5 hours




Post new topic Reply to topic  [ 13 posts ]  Go to page 1, 2  Next
Author Message
 Post subject: Uni-Syn carb sync
PostPosted: Mon Mar 20, 2017 11:55 am 

Joined: Thu Oct 20, 2016 4:35 am
Posts: 17
Location: Londonderry NH
Anyone ever used one of these units?

I've had one for quite some time for the odd multi carbed vehicle that rolls through the doors these days.
Saturday I actually had my shop to myself. I "called it" earlier in the week. :lol: ( we're a Mon-Fri business )

So I rolled my bike lift into the middle of a bay, cranked up some Allman Brothers and spent some time with my H2.

I'd static synced the TM34 carps I'd purchased so the slides all moved equally and at the same time.
I figured I'd use that tool to measure actual airflow through them at idle and at 3000 rpm.

They were all different by a large margin with the center cylinder flowing the most air.

So I loosened the lock nuts on the cable adjusters at the top of the carbs and adjusted the cables so that airflow was the same for all three cylinders at idle and 3000 rpm.

I rechecked the static adjustment and sure enough the carb on the center cylinder opens later than the left and right ones.
In fact the carbs now open in this order, Left, Right then Center.
I'd never used that tool on my bike before.
The motor "sounds" noticeably smoother.
I wonder what the results would be with chambers instead of that Cycle Stop 3-1 pipe.
It makes me wonder if the collector with it's scavenging effect is causing different airflow through the cylinders.

Perhaps I should install a set of chambers and see what results I get.
It does sound cool with that pipe though.

I wonder if I'm trying to re-invent the wheel?

Craig

I


Top
 Profile  
 
 Post subject: Re: Uni-Syn carb sync
PostPosted: Mon Mar 20, 2017 12:43 pm 
Site Admin
User avatar

Joined: Tue Jun 07, 2011 6:36 am
Posts: 2232
Location: Dandridge, TN, USA
Uni-Syn has been used on Triples for years and is a good tool to use if done properly.

_________________
http://kawatriple.com/


Top
 Profile  
 
 Post subject: Re: Uni-Syn carb sync
PostPosted: Mon Mar 20, 2017 2:28 pm 

Joined: Thu Jun 09, 2011 11:25 am
Posts: 2100
There are actually two adjustments, idle (by the idle set screws in the sides of the carbs), and with the cables pulling the slides up off idle.

There used to be two Uni-Syn models, one is as Edelbrock sells now, vial attached to the flow setting device. The other is one that has separate flow setter and vial, with a section of flexible hose between them. I have both, like the separated one the best.

I also use a mercury manometer fed with vacuum fittings in each carb, like the fuel valve hose fitting the one stock carb has, much nicer to use.


Top
 Profile  
 
 Post subject: Re: Uni-Syn carb sync
PostPosted: Mon Mar 20, 2017 3:00 pm 
User avatar

Joined: Wed Jun 08, 2011 10:41 pm
Posts: 3042
Location: Mount Vision, NY
At the Kaw shop I worked at, the mechanics had a 3 port unison that they used on the H1 carbs and other triples after 71.
It was a 1 piece unit that was held against all 3 carbs at once.
Then you adjusted to get all 3 floats in it at the same level.
As pointed out, it is also very important for all slides to move in (no pun) unison
and should lift at the same time.

_________________
Bad decisions make the best stories.



Top
 Profile  
 
 Post subject: Re: Uni-Syn carb sync
PostPosted: Mon Mar 20, 2017 3:47 pm 
Site Admin
User avatar

Joined: Tue Jun 07, 2011 6:36 am
Posts: 2232
Location: Dandridge, TN, USA
Quote:
There are actually two adjustments, idle (by the idle set screws in the sides of the carbs), and with the cables pulling the slides up off idle.
And airscrew. http://www.kawatriple.com/manuals/carbt ... htm#meters

Quote:
Then you adjusted to get all 3 floats in it at the same level.
How can you use one to set float level??? :?:

_________________
http://kawatriple.com/


Top
 Profile  
 
 Post subject: Re: Uni-Syn carb sync
PostPosted: Mon Mar 20, 2017 5:09 pm 
Site Admin
User avatar

Joined: Tue Jun 07, 2011 6:37 am
Posts: 9430
Location: Rio Rancho, New Mexico
You just did the adjustments backwards Craig. ;) once you get the vacuum even then adjust the cables so they all move at the same time.

_________________
I can teach your triple how to "reed"........
http://kawatriple.com/aylor


Top
 Profile  
 
 Post subject: Re: Uni-Syn carb sync
PostPosted: Mon Mar 20, 2017 5:51 pm 
User avatar

Joined: Fri Jun 10, 2011 11:04 am
Posts: 3075
Location: Capitol of Ca, USA
mraxl wrote:
Quote:
Quote:
Then you adjusted to get all 3 floats in it at the same level.
How can you use one to set float level??? :?:

I'm guessing Steve is referring to the floats of the sync tool?

_________________
"Only cheat the cheaters, boy - you can't cheat an honest man!" Mordecai Jones - The Flim Flam Man.


Top
 Profile  
 
 Post subject: Re: Uni-Syn carb sync
PostPosted: Mon Mar 20, 2017 5:57 pm 
Site Admin
User avatar

Joined: Tue Jun 07, 2011 6:36 am
Posts: 2232
Location: Dandridge, TN, USA
Quote:
I'm guessing Steve is referring to the floats of the sync tool?

aha! :thumbup:

_________________
http://kawatriple.com/


Top
 Profile  
 
 Post subject: Re: Uni-Syn carb sync
PostPosted: Mon Mar 20, 2017 6:19 pm 
User avatar

Joined: Wed Jun 08, 2011 10:41 pm
Posts: 3042
Location: Mount Vision, NY
mraxl wrote:
Quote:
I'm guessing Steve is referring to the floats of the sync tool?

aha! :thumbup:


Dat is a BIG 10-4 man.
The little floats in the vacuum tubes.
When they were all set to the same level, it supposedly meant the air draw on each was equal.
Thats what I thought, I was a parts man....


hahahaha

I do recall it being a 2 man job...

_________________
Bad decisions make the best stories.



Top
 Profile  
 
 Post subject: Re: Uni-Syn carb sync
PostPosted: Mon Mar 20, 2017 8:22 pm 

Joined: Mon Aug 19, 2013 10:03 pm
Posts: 129
Location: Whitehall, Michigan
H2RTuner wrote:
There are actually two adjustments, idle (by the idle set screws in the sides of the carbs), and with the cables pulling the slides up off idle.

There used to be two Uni-Syn models, one is as Edelbrock sells now, vial attached to the flow setting device. The other is one that has separate flow setter and vial, with a section of flexible hose between them. I have both, like the separated one the best.

I also use a mercury manometer fed with vacuum fittings in each carb, like the fuel valve hose fitting the one stock carb has, much nicer to use.


Any suggestions on where to source those fittings to add to the other two carbs?


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 13 posts ]  Go to page 1, 2  Next

All times are UTC - 5 hours


Who is online

Users browsing this forum: warehouse1001, Yahoo [Bot]


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to:  
Powered by phpBB® Forum Software © phpBB Group