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Discussion Starter #1
Hello there. I am rebuilting my Vee these days and right now i am in the proccess of assembing the engine. So there is a water union for each cylinder head, they look exactly the same but they are not. One of them has a smaller whole inside for the water to flow. Even Suzuki gives a different code for each one. The codes are
17890-06G10
UNION, CONNECTOR HOSE FRONT
and
17890-06G00
UNION, CONNECTOR HOSE for the rear one.
My problem is that when i took them out i did not notice that, and now i dont know where to put each of them. Any help would be appreciated. Thanks!
 

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FORUM GODFATHER.....R.I.P. PAT
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Do the two cylinders have different size inputs? Failing that, I would guess the rear cylinder would tend to need more cooling but that is a wild guess.
 

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Pete, I looked at a Suzuki parts microfische. I don't know what year you have so here is what I see:
The K2 and K3 model rear connector part number has been superceded from 06G00 to 06G20

The front connector 06G10 is used for K2 models only. 06G20 is used for K3, K5, and K6.
It appears to me(I didnt look at all the model year parts sheets) that connector on all models front and rear now uses the 06G20 part number, so, front and rear connectors are the same.
 

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Discussion Starter #4
Thanks for your reply! This part goes to the cylinder head which are both the same, front and rear. Only the cylinders are different. The two parts look identical but inside one of them is wider...
 

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Discussion Starter #5
The bike is K2. I have the parts, both of them and one of them has a smaller whole inside! My problem is that I dont know which goes to the front and which to the rear!
 

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OK Pete, I looked them up again specifically for the K2. The connector for the rear has been changed from 17890-06G00 to 17890-06G20.

The front connector is still the 17890-06G10.

Naturally without both parts new in their labeled parts bags I couldnt tell you which is which. I doubt anybody could. So, here is my suggestion: Order both connectors. They are not expensive- the rear connector is $9.58, the front is $10.59. The part numbers Ive provided will identify their locations. Use the new parts if you like, or return them if you want. As the rear connector part number has been superceded there may be a physical change to the part...or it may just be a part number change. If they are shipped in plastic bags, dont open them, just do an eyeball measurement so there wont be a possible return issue. If in boxes, do what you have to do.

If I were to order just one, it would be the rear connector as it's the one with the updated part number.
One small thing...when I do engines, transmissions, etc I use a Sharpie, and engraver, digital pictures, plastic sandwich bags, cupcake trays, ice cube trays,you name it to identify and place parts in their proper order and keep them in their order. I'd take a gearbox apart and it might be 2 months before parts would show up. Please dont take my suggestion as an insult-I was on the clock for 43+ years and I couldnt afford to waste time figuring out where everything went that I took apart previously. At home I still do this.Trust me..memory does not improve with age.

Hope this helps! Terry
 

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Discussion Starter #7
Many thanks Terry, that was really helpful. This is the first time i am doing such thing. I am not mechanic, just trying to rebuilt the bike. Everything goes well so far, i ve taken photos and notes of everything and i am about to start reassempling. I will try to post some photos when i finish.
 

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A friends son did the picture thing when taking the engine apart on his 60's Toyota FJ. It helped a lot when he got all the pieces back. It runs well now.
Good luck!
 

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Discussion Starter #9
Finally i bought all parts from the local suzuki dealer The prices were really almost same as at the competitive shops. The owner of the shop made a call to the central dealer in Athens and a few minutes later we had the answer. The water union with the smaller hole inside goes to the front cylinder head. Might be usefull to someone else!
 

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FORUM GODFATHER.....R.I.P. PAT
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So my wild guess was right. I guess it's not much to brag about when the odds are 50/50.
 
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