Yics

[donebysunday]

tool, leave it installed or not ?
Are YOU leaving it installed or not ?
Advantages ?
Thanks, Done

[3Phase]

tool, leave it installed or not ?
Are YOU leaving it installed or not ?
Advantages ?
Thanks, Done

I sync'd the carburetors, then removed the tool. Honestly, I don't have enough experience or miles with the YICS and the XJ to make a decision.


FWIW I have Chacal's and Yahman's YICS block-off tools now. They're both fine tools but don't get the port cleaning pick or the brush from Chacal. The pick is a fantastic tool with clear markings that along with the brush will do a great job cleaning the #1 and #2 YICS ports. Unfortunately they're only half-length tools designed to work with XJ models that have plugs tapped into the left and the right ends of the YICS passage. The XJ1100 only has one YICS plug on the left so the half-length cleaning tools can only do a half-fast job.

I thought about drilling and tapping the right-hand end of the YICS passage to make it easier to clean and to work with the tools, then I remembered that the engine looks and runs great just the way it is so I then thought about going for a ride.

[ViperRon]

Brilliant thinking there

[donebysunday]

I sync'd the carburetors, then removed the tool. Honestly, I don't have enough experience or miles with the YICS and the XJ to make a decision.


FWIW I have Chacal's and Yahman's YICS block-off tools now. They're both fine tools but don't get the port cleaning pick or the brush from Chacal. The pick is a fantastic tool with clear markings that along with the brush will do a great job cleaning the #1 and #2 YICS ports. Unfortunately they're only half-length tools designed to work with XJ models that have plugs tapped into the left and the right ends of the YICS passage. The XJ1100 only has one YICS plug on the left so the half-length cleaning tools can only do a half-fast job.

I thought about drilling and tapping the right-hand end of the YICS passage to make it easier to clean and to work with the tools, then I remembered that the engine looks and runs great just the way it is so I then thought about going for a ride.

I wonder, (now I've not even tried the tool) would a gun cleaning rod and the right caliber brass brush do what the short Chacal is meant to do ?
Now just thought sure would not want to risk a bristle breaking off the brush and getting into the wrong place !
Thanks ! Done };-)

[3Phase]

I wonder, (now I've not even tried the tool) would a gun cleaning rod and the right caliber brass brush do what the short Chacal is meant to do ?
Now just thought sure would not want to risk a bristle breaking off the brush and getting into the wrong place !
Thanks ! Done };-)

I took a page from the '81 and later fuel level test to clean the YICS.

With the bike leveled on jacks and wood blocks (no center stand ), I stuffed a clear plastic tube into the YICS passage and wired it open end up onto the cylinder head. I slowly poured some warm Yamalube carburetor cleaner mix into the tube until it filled the YICS and the tube with evil-looking sinister stuff to just below the level of the intake manifold, then plugged the tube and did something else for a while to let it soak. Every now and then I drained the stuff into a jar, then refilled it with fresh, warm, carburetor cleaner and let it soak some more.

After doing this basically all day and then then letting it soak overnight I drained the YICS the next morning and flushed it with some more warm carb cleaner. I put the bike on the side stand with a big towel under the YICS passage and broke out the Moroso (?) engine brush set for cleaning everything you can imagine in an engine block. I used the medium length oil gallery brushes and a can of carburetor spray; steel brush first, brass brush, then the nylon brush.

When I was happy with the brush work, I flushed the YICS with a can of carburetor spray, then used a gun rod to run a half dozen oiled patches in the passage. The YICS passage is clean and a bore scope shows all four of the entrance holes going up into the head are clean too. I can't clean any further without getting stupid and pulling the head so the YICS is as clean as it's going to get for now.

[donebysunday]

Change

Did you notice any change in how your bike runs ?

Did the YICS tool installation alone make any difference in running ?

[Prothec]

I prefer leaving my YICS tool out after syncing. It probably doesn't make that much of a difference day-to-day, but I figure leaving it out helps compensate for slight imbalances. I feel like it very slightly runs smoother for me with it out, but it could just be in my head or my inability to perfectly balance my carbs :shrug:

[donebysunday]

How

many on here own an XJ11 ?
I kinda felt there would be more folks answering about this question.
Thanks, Done

[Yahman]

many on here own an XJ11 ?
I kinda felt there would be more folks answering about this question.
Thanks, Done

At least 58 by my count.

[mlew]

I have had the cylinder head off of both my XJ11s and plugged the YICS ports on them. Never need the tool again.

[3Phase]

Did you notice any change in how your bike runs ?

Did the YICS tool installation alone make any difference in running ?

The YICS tool didn't make much difference.
The carbs I have on it were only off by 1/4 turn on 1 and 4. I feel better now that it's clean and balanced but I'll do it again later this week; have some work to do first.

[soccer4m]

agree with scott on yics

Howdy,, I have had an xj1100 since 87' and the yics thing is waay over rated. I have synch with the yics port plugged and without and it never really made any difference with the tool or without it. The xs1100's are much more delicate in synching and small adjustments are noticable. The xj runs the same after synching with the yics tool in or without it in and far as my results. I just left the tool in and if, when it ever acts like it needs a sych again, I will resynch. Its been over 30,000 miles with the yics plug and no noticable need so far
Have fun,,,,Mike in Sun Diego

[motoman]

Howdy,, I have had an xj1100 since 87' and the yics thing is waay over rated. I have synch with the yics port plugged and without and it never really made any difference with the tool or without it. The xs1100's are much more delicate in synching and small adjustments are noticable. The xj runs the same after synching with the yics tool in or without it in and far as my results. I just left the tool in and if, when it ever acts like it needs a sych again, I will resynch. Its been over 30,000 miles with the yics plug and no noticable need so far
Have fun,,,,Mike in Sun Diego

,,,,,,with a lot of that 30k LD rides here at my location.Durango Rally, Canon City and Sturgis week.

[skids]

,,,,,,with a lot of that 30k LD rides here at my location.Durango Rally, Canon City and Sturgis week.

Those are some long rides Brant! OK, maybe a comma would help.

[Abnorml]

I used to have an XJ550 and used a .40 cal bore brush to clean the yics passage. I used the spiral wound bore brush, it did a fantastic job.

I wonder, (now I've not even tried the tool) would a gun cleaning rod and the right caliber brass brush do what the short Chacal is meant to do ?
Now just thought sure would not want to risk a bristle breaking off the brush and getting into the wrong place !
Thanks ! Done };-)