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O-ring needed for TK26 carbs
- GpzGreen
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The plugs, original orange in color, are good, but I am not having any luck finding replacement O-rings. I think the part number is 92055-1337.
The dimensions need to be about 3.5 mm inner diameter and 4,6 to 4.7 outer diameter.
The originals were, I believe, a bit tapered like a cork in a bottle. Not sure if this specification really matters.
Also, a possibly silly question as I am not very knowledgeable on carbs but is this O-ring exposed to gasoline so needs to be fuel rated? I think so.
I have done some searches but anything I find says out of stock and I am guessing they have been for a while.
Thank you for any help.
1982 GPZ-550
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- Scirocco
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My 1975 Z 1 B 900 Project
www.kzrider.com/forum/11-projects/605133...ears-deep-sleep-mode
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- GpzGreen
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Don't they need to be fuel resistant as well?
1982 GPZ-550
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- Nessism
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BTW, O-rings are sized by ID and thickness.
As for material, Buna N (nitrial) or viton will work.
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- GpzGreen
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The size where the plug needs to go in is a bit loose without an O-ring and measures 4.8mm using calipers.What is the size of the passage in the carb?
BTW, O-rings are sized by ID and thickness.
The outer diameter of the plug is 4.7. O-rings with an outer diameter of 5.2 to 5.3 are a no go. So maybe 4.9 to 5.0 is a better size to shoot for.
My understanding of the dimensions provided on web sites are the outer diameter plus the cross section of the thickness of the rubber.
So, I would need 3.5 ID with a thickness of .7 times 2 to get to 4.9mm overall. Is this correct?
1982 GPZ-550
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- Nessism
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ID + thickness is the industrial standard when it comes to sizing O-rings.
The size where the plug needs to go in is a bit loose without an O-ring and measures 4.8mm using calipers.What is the size of the passage in the carb?
BTW, O-rings are sized by ID and thickness.
The outer diameter of the plug is 4.7. O-rings with an outer diameter of 5.2 to 5.3 are a no go. So maybe 4.9 to 5.0 is a better size to shoot for.
My understanding of the dimensions provided on web sites are the outer diameter plus the cross section of the thickness of the rubber.
So, I would need 3.5 ID with a thickness of .7 times 2 to get to 4.9mm overall. Is this correct?
I've got some 3.5 x .9mm O-rings. Those might work. Use some slicone grease before install.
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- GpzGreen
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So, is my math correct? The OD diameter of these would be 3.5 + .9 + .9 = 5.3mm.I've got some 3.5 x .9mm O-rings. Those might work. Use some silicone grease before install.
We have a few this size and even with silicone they will not go in evenly.
Do they need to be rated for fuel/gasoline?
1982 GPZ-550
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- Nessism
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So, is my math correct? The OD diameter of these would be 3.5 + .9 + .9 = 5.3mm.I've got some 3.5 x .9mm O-rings. Those might work. Use some silicone grease before install.
We have a few this size and even with silicone they will not go in evenly.
Do they need to be rated for fuel/gasoline?
Of course they need to be rated for gasoline. As I said previously, you need Buna N or viton.
The only other O-rings I'm aware of that may work are .8 x 3.2.
www.theoringstore.com/store/index.php?ma...60&products_id=43927
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- Nessism
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This is not a super skinny O-ring. It's very similar to the O-rings I've got here.
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- GpzGreen
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It seems Kawasaki used the same part number for things then added some more numbers or letters for different O-rings.
I am getting the impression the Gpz550 is a tough find these days.
Thank you for looking for me.
1982 GPZ-550
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- martin_csr
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- Nessism
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And realize, if the carb hole is 4.8mm, you want the "as installed" O-ring to be about 5.2, since the O-ring must crush on install to affect a seal.
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