Carb rebuild o ring sizes

[Kgkeates]

Hi rebuilding carbs with a all balls kit.  O rings are just thrown together in pack. Does any one now sizes to use on air mixture screw, air cut out valves,drain valves air rails and fuel rails.

[Ramie]

https://redeye.ecrater.com/c/414983/carb-intake-seal-kits

[Kgkeates]

Thanks but does not ship to UK

[Timbo1]

Hi rebuilding carbs with a all balls kit.  O rings are just thrown together in pack. Does any one now sizes to use on air mixture screw, air cut out valves,drain valves air rails and fuel rails.

If I recall correctly after separating them out there are 6 of the little ones slightly fatter than the others.  I think those go on the needle jet and there are only 6 of them.  Some of the others are same size for air cut, mixture etc.. but were pretty obvious once I separated them and compared during disassembly and reassembly.

ETA: I may be mistaken on the size of the fatter ones they may have been more similar to the size of the fuel rail o-rings.  Still I think it should be apparent with comparison on disassembly.

I don't see sizes here but may help you in some way.
https://www.partzilla.com/catalog/honda/motorcycle/1998/gl1500c-a-valkyrie/carburetor-components

[Kgkeates]

 :smitten:Hi Thanks did use smaller ones of which there where only 6.  Cut off valve I tried the ones  that looked the same but seemed too large and Tight to put small brass fitting back inside.  The largest ones are simular to fuel rail but ther are only 6 of them.

[Mooskee]

I laid out an All Balls kit and labeled them for you.
I am also showing a set of K&L 18-8955 Bowl Float Needles. That is all I use. I believe them to be far superior to the All Balls kit ones. The All Balls float needles set the float at the wrong height. In addition The Bowl Float needles are a key component in the prevention of Hydrolock. The rest of the All Balls kit seems to be excellent IMHO.

[Mooskee]

:smitten:Hi Thanks did use smaller ones of which there where only 6.  Cut off valve I tried the ones  that looked the same but seemed too large and Tight to put small brass fitting back inside.  The largest ones are simular to fuel rail but ther are only 6 of them.

They are the correct ones. I put the O-rings on the jet (brass tube), then set it in the hole and use the tip of a JIS screwdriver to GENTLY rock the tube around, it will seat. Then put the ACV back on it.

[98valk]

https://www.randakksblog.com/more-problems-with-aftermarket-float-valves/

[98valk]

:smitten:Hi Thanks did use smaller ones of which there where only 6.  Cut off valve I tried the ones  that looked the same but seemed too large and Tight to put small brass fitting back inside.  The largest ones are simular to fuel rail but ther are only 6 of them.

They are the correct ones. I put the O-rings on the jet (brass tube), then set it in the hole and use the tip of a JIS screwdriver to GENTLY rock the tube around, it will seat. Then put the ACV back on it.

only one company was still making JIS std screwdrivers when this article was written. All screwdrivers today are made to the new standard. I have new Harbor Freight phillips and they work perfectly in JIS screws.
https://rtstools.com/jis-vs-phillips-screwdrivers-and-where-to-buy-a-jis-screwdriver/

[Mooskee]

:smitten:Hi Thanks did use smaller ones of which there where only 6.  Cut off valve I tried the ones  that looked the same but seemed too large and Tight to put small brass fitting back inside.  The largest ones are simular to fuel rail but ther are only 6 of them.

They are the correct ones. I put the O-rings on the jet (brass tube), then set it in the hole and use the tip of a JIS screwdriver to GENTLY rock the tube around, it will seat. Then put the ACV back on it.

only one company was still making JIS std screwdrivers when this article was written. All screwdrivers today are made to the new standard. I have new Harbor Freight phillips and they work perfectly in JIS screws.
https://rtstools.com/jis-vs-phillips-screwdrivers-and-where-to-buy-a-jis-screwdriver/

True. I actually use the one from the tool kit, which I ASSUME is a JIS. I do have a set of "Vessel" screwdrivers that are Japanese made and advertised as JIS. The seem to work well on all the carb screws without popping out and messing something up!

And after reading your referenced article, I realize the Vessel are the same as your Harbor Freight in Spec. Good to know.

[Mooskee]

https://www.randakksblog.com/more-problems-with-aftermarket-float-valves/

Interesting article. I do take issue with the statement that the Factory float valves will often last longer than the motorcycle. I have rebuilt a lot of sets of Valkyrie carbs. I inspect the float valves during disassembly just out of curiosity. Almost all have springs so weak and tips so worn that the floats don't sit up at all with the carbs upside down, and will barely sit up as they are turned. Our bikes are 20 years old. That is a LOT of wear and tear on a tiny spring and a rubber tip.

I do like the K&L float bowl needles, and started using them on the recommendation of a legend in the Valkyrie world. I will check out using the OEM. Cost is not so much a consideration, but I would like to know who is making them for Honda.

Thanks for your insight. You have a lot of experience, and I respect that.

[98valk]

https://www.randakksblog.com/more-problems-with-aftermarket-float-valves/

Interesting article. I do take issue with the statement that the Factory float valves will often last longer than the motorcycle. I have rebuilt a lot of sets of Valkyrie carbs. I inspect the float valves during disassembly just out of curiosity. Almost all have springs so weak and tips so worn that the floats don't sit up at all with the carbs upside down, and will barely sit up as they are turned. Our bikes are 20 years old. That is a LOT of wear and tear on a tiny spring and a rubber tip.

I do like the K&L float bowl needles, and started using them on the recommendation of a legend in the Valkyrie world. I will check out using the OEM. Cost is not so much a consideration, but I would like to know who is making them for Honda.

Thanks for your insight. You have a lot of experience, and I respect that.

yep tips are a wear item, reason I've been using TC-W3 2-stroke oil in the gas for yrs, its keeps everything lubed and clean. TC-W3 is actually the spec the oil has to meet. amazing spec to read.
normally what causes a spring to fail is excessive heat or pulling it apart past its yield curve. 
if the springs are failing during normal compression movement like the floats, almost no weight, that would mean bad spring metal and/or the heat treating that was used in my opinion.
I mean we could say the same things about the slide springs. agree?
and I agree who is making them for honda?  contractor in china using subpar spring metal and cutting the other corners, like was done with the alternators?
K&L does seem to make excellent products. last time I checked which was yrs ago, most of their items are made in Taiwan, which is usually top of the line.
thanks for the compliment.

[h13man]

Vessel brand JIS screwdrivers. They work so well that use them on all phillips head screws.

https://www.google.com/search?q=Vessel+220+Ball+Grip&stick=H4sIAAAAAAAAAONgVuLVT9c3NCwuSk5Jyik2eMRowS3w8sc9YSn9SWtOXmPU5OIKzsgvd80rySypFJLmYoOyBKX4uVB18uxi4g0oyk8pTS4JSi3LTC1fxCoSllpcnJqjYGRkoOCUmJOj4F6UWQAAZ6egnHMAAAA&biw=1511&bih=705&dpr=0.9

[Kgkeates]

Just a big thanks to you all for answering my questions.  The diagram showing where o rings go is invaluable and would help if all balls included instructions in pack.  Once again Thanks from UK take care all.

[98valk]

Vessel brand JIS screwdrivers. They work so well that use them on all phillips head screws.

https://www.google.com/search?q=Vessel+220+Ball+Grip&stick=H4sIAAAAAAAAAONgVuLVT9c3NCwuSk5Jyik2eMRowS3w8sc9YSn9SWtOXmPU5OIKzsgvd80rySypFJLmYoOyBKX4uVB18uxi4g0oyk8pTS4JSi3LTC1fxCoSllpcnJqjYGRkoOCUmJOj4F6UWQAAZ6egnHMAAAA&biw=1511&bih=705&dpr=0.9

that's because vessel uses the new std in the article I posted, they don't use the JIS std unless you acquired them over a decade ago.

[h13man]

Mine works great on 82' vintage GW screws thus I say they are JIS spec made. Ordered them in 8/18 red & black magnetic ball handle variant. Made in Japan.