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RE: Carb Sync

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RE: Carb Sync - 7/5/2006 4:30:19 PM   
fly70


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Joined: 4/24/2006
From: Finland
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But if you like to hassle try this.


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Post #: 16
RE: Carb Sync - 7/5/2006 7:52:43 PM   
VeryMotley


Posts: 171
Joined: 5/28/2006
From: Dallas, Texas U.S.A.
Status: offline
It is for 2 carbs, at least I think that is what I read. I have not used it. I thought you tuned;
1. Carbs 1&2 ( bank 1 )
2. Carbs 3&4 ( bank 2 )
3 Then Banks 1 & 2

If that is the case this should work, in theory.

I will keep Morgans in mind, but want to try this ( being a cheap Bastard)

Maybe I will build 2




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Too much weed and beer can make you tie Houdini knots in your helmet strap.
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Post #: 17
RE: Carb Sync - 7/5/2006 7:56:49 PM   
VeryMotley


Posts: 171
Joined: 5/28/2006
From: Dallas, Texas U.S.A.
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Man Fly70 I would like more info on that monstrosity.... that looks right up my alley.

_____________________________

Too much weed and beer can make you tie Houdini knots in your helmet strap.
..

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Post #: 18
RE: Carb Sync - 3/29/2007 11:25:42 PM   
idodirt



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Joined: 8/14/2006
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Kudo's to Capt'n "O", really nice write up. Last week I ordered my Carbtune II. In anticipation of its arrival, I took the carburetors apart and cleaned them. I'm not sure if they've ever been cleaned, but they haven't been done since I owned it at 14K miles. It's got 31K miles now so I figured what the heck. I replaced all the "O" rings and gaskets. I did the first one in it's entirety to get familiar with the task. Then, using individual parts containers I did the other 3 as an assembly line process. I was really surprised at how well the K&W Technician Grade Carburetor and Choke Cleaner did on removing the deposits. For grins, I did try different solvents, but to no avail. It really is worth purchasing a couple of cans of this spray, or something like it. The total time to completion was about 6 hr’s. That's from parking the bike, to getting it started again after reassembly and ready to ride.

The Carbtune tool arrived this week so I was ready. As I started looking at the task I reviewed Captain "O"s instructions as well as reviewing the shop manual and common service guide. The Captains made it much clearer as to where the ports were and the location of the adjustment screws. I should have reviewed it before doing the cleaning. With the carburetors off the bike, you have unfettered access to the vacuum ports. To make things easy, I decided to do a little plumbing and add some permanent vacuum tubes and port them up to the top of the carburetors between #2 and #2 carb. This way I only have to raise and prop the tank, make my connections to the extension hoses and make my adjustments. For the #1 port that goes to the fuel petcock, I installed a "T" connector inline, with the extra branch going up with the other new tubes. I'll be able to do future sync jobs in about 15 to 20 minutes. I'm happy to say my first time a synchronizing my carburetors went off without a hitch. The #3 carb had the highest vacuum, #4 was next, and #1 and #2 were identical. I adjusted #4 to #3, and then balanced the 1-2 to the 3-4. All were essentially level when finished.

I can't for the life of me figure why the 4th port has a "Cap" screw installed rather than a tube and rubber cap (anyone feel free to step in and suggest reasons). I ordered a "Joint, Booster" as Honda calls it to put in place of the Cap screw.



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Post #: 19
RE: Carb Sync - 3/30/2007 12:55:15 AM   
slowpoke


Posts: 518
Joined: 8/6/2005
From: Denver, Colorado
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Nice write up and pictures, Did you have to adjust the float level? I heard that it's different on carbs 93 and later.

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Post #: 20
RE: Carb Sync - 3/30/2007 10:22:40 PM   
idodirt



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I tell you, if there is a way to adjust those floats, or their level, I didn't see a way. The entire body of the float is plastic, not exactly an adjustable type of material if you know what I mean. As for how it's attached, it has a pivot shaft that goes through the float (seen at the very top of photo) and slides through 2 posts. The height of the posts are not adjustable, and the only other attachment point is where it hooks to the Float Valve, and that part is not adjustable either. I didn't attempt to make any adjustments to the carburetor while it was apart. I put everything back in exactly the same way it came out (minus the dirt and grime naturally).

I meant to add a photo of where I left the hoses for future sync jobs. I'll edit the post and add the additional photo if I can. If not, I'll add here.

Thanks for the complement.

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Post #: 21
RE: Carb Sync - 3/30/2007 10:37:48 PM   
idodirt



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Well, it looks like 5 is the limit for here, so I'm including the following photo here. The is where I've left the vacuum extensions that I attached to each of the ports on the intake manifold. I've temporarily placed an adapter that came with my Carbtune in place of the screw that plugs port #4. I'll replace it later with one like on port 1-3. Each hose has a plug on it with a white adapter piece in the end of it. There is a blue tie wrap holding them all together so they don't fall down below the carbs. The last photo shows the white "T" adapter I installed in the vacuum line that goes from port #1 to the petcock vacuum actuator on the fuel valve. This way I don't need to worry about manually attaching some kind of tool to generate a vacuum so the fuel flows.




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RE: Carb Sync - 3/31/2007 12:18:20 AM   
Stray Cat


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I also gave some thought to attaching tubing like you did so I can just hook the gauge up and go. But alas I was lazy and wanted to get out and ride, so I didn't. Next time I do a sync I'll install the tubing.
Thanks for the pictures, they're worth and thousand words!

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Post #: 23
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