Topic: 1972 CB750K2- $90 for O-Rings! --HELP--

[hal26]

Just overhauled carbs with 4 new kits-put it back together and now fuel just pours out of the 2 T shaped fuel fittings between 1 and 2 and 3 and 4 carb bodies. These each have 4 tiny O Rings (total of my problem is that these little rings seem to be available only as part of a $22 gasket set and I would have to buy 4 sets and pay shipping (keep in mind that I just bought 4 rebuild kits that include all the gaskets that are in this kit EXCEPT the o rings). These ought to cost about 50 cents apiece.....any ideas???

[d3buttz]

try rocketseals here in denver. ive picked up orders from them with my last job and that place has everything- dirt cheap too.  I dont know if they will deal with or mail small orders though........ Somewhere on this forum someone has posted all the OD and sizes for the rubber seals. good luck
http://www.rocketseals.com/

[steam-powered man]

i'll be into the carbs on my k2 pretty soon. 

looked on the cmsnl parts fiche and found that these T-fitting o-rings are listed as 1.9 x 7.8mm

mcmaster-carr has metric o-rings of 1.9 width x 7.8 I.D. 

if you can confirm that the O.D. where the o-ring is placed is 7.8mm, you can get 100 of these o-rings for $7.70   

[hal26]

Thanks! I really appreciate you guys helping me out!!     

[bmarshall]

Harbor Freight has 392 assorted metric o ring set for about $8. don't know if they're the right size though

[d3buttz]

i tried both of the HF metric sets - nothing works, all the od's  are way bigger than the honda carb ones, even if you try to stretch em over with a smaller width, still wont fit into anything

[fmctm1sw]

I ended up being able to use ones from Napa.  $5 I think.  No leaks...

[bryanj]

16173-044-004 Is the original part number if you can find any in stock anywhere

[hal26]

Shoemanii,you are THE MAN!!  mcmaster-carr had 'em in stock and they got here in 2 days and they fit perfectly. I got the carbs back on the bike and no leaks. Total price was $12 and change delivered for ...get this...100!   

[Kevin400F]

Hal, what material were they?  If Buna-N, should be OK, Viton even better.  If Neoprene, you'll likely be pulling again to replace. 

[joe1028]

k&l has them but you will need a shop to buy them from (dealer only), make sure the seals you buy are proper material...joe

[steam-powered man]

hal, you are most welcome kind sir  . 

some time ago i needed some bowl drain "o"-rings, 1.5 x 4mm, and no one had 'em except in a kit.  so i got 100 for $12 (2 days also) and gave 40 to a friend of mine that works in a ma/pa type shop specializing in older rides.  still have around 50 in the tool chest.

both buna-n are standard, viton are available.         

[HondaMan]

I've been using the 8x2mm O-rings in those fuel tees. I have some from Rocket Seals, just for that. If you contact them, they will mail order to you: I asked them about that a couple of weeks ago, and they said they do it all the time. They are about 50 cents each with shipping for about 10 or so.