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Author Topic: 78 cb550k carb "O"rings and a BIG supplier site  (Read 2003 times)

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Offline Tom in Newcastle......Ontario

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78 cb550k carb "O"rings and a BIG supplier site
« on: October 23, 2009, 12:27:10 PM »
Does any one know the "O"ring sizes for the 550  PD carbs,namingly the adjustable jet (Main ???) and drain screw.

I came up with 7mm OD by 1.3mm thick

and 5mm OD by 1.2 mm thick

I was thinking about just ordering the "O" rings( from the site below),as most kits(Keyster,K&L) come with the jets which are not really needed,and some people say are crap,

I ordered one set from Honda and it was $15.50,and tried taking measurements from them.

http://www.cyclewareables.com/pages/carburetor_o_ring_kits/carburetor_o_ring_passage_plug.htm

I found this site which has alot of stuff from jets to "O"rings to rotors etc
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1978 cb 550k......stock,my first re-build


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Offline Tom in Newcastle......Ontario

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Re: 78 cb550k carb "O"rings and a BIG supplier site
« Reply #1 on: October 24, 2009, 10:25:23 AM »
Anyone...........
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1978 cb 550k......stock,my first re-build


Loud pipes suck.......

If you buy something.........pay for it !
If you sell something .......ship it !
If you say you are going to do something......do it !
If you have a question about something......ask it !
When the seller answers ........let him know whether you still want it or not !
If you receive something .....let the seller know you got it !
If you get something and are happy/un happy with it .....let the giver/seller know !
If you have any kind of issue,shipping/receiving/quality/price/shipping charges etc !
Communicate

Offline steamnjn23

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Re: 78 cb550k carb "O"rings and a BIG supplier site
« Reply #2 on: December 11, 2009, 09:25:29 AM »
bump
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Offline steam-powered man

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Re: 78 cb550k carb "O"rings and a BIG supplier site
« Reply #3 on: December 11, 2009, 12:17:05 PM »
Mcmaster-Carr has these metric o-rings listed:
1 x 5mm and 1.5 x 5mm
1 x 7mm and 1.5 x 7mm

sold in lots of 100, cheap

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Offline Kevin400F

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Re: 78 cb550k carb "O"rings and a BIG supplier site
« Reply #4 on: December 11, 2009, 01:09:18 PM »
I have carb O-rings on hand if you haven't found any yet.  Shoot me a message.
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Offline bryanj

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Re: 78 cb550k carb "O"rings and a BIG supplier site
« Reply #5 on: December 12, 2009, 12:17:05 AM »
the 78 has a screw in main jet with no "O" ring
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Offline Tom in Newcastle......Ontario

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Re: 78 cb550k carb "O"rings and a BIG supplier site
« Reply #6 on: December 12, 2009, 05:57:05 AM »
Quote from: bryanj on December 12, 2009, 12:17:05 AM
the 78 has a screw in main jet with no "O" ring


Well maybe I am getting the names of the jets /needles wrong.....the one that is outside of the float bowl with the "O" ring and small steel washer and spring(air screw/fuel mix screw),is the one that I was trying to get an accurate size for.
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1978 cb 550k......stock,my first re-build


Loud pipes suck.......

If you buy something.........pay for it !
If you sell something .......ship it !
If you say you are going to do something......do it !
If you have a question about something......ask it !
When the seller answers ........let him know whether you still want it or not !
If you receive something .....let the seller know you got it !
If you get something and are happy/un happy with it .....let the giver/seller know !
If you have any kind of issue,shipping/receiving/quality/price/shipping charges etc !
Communicate

Offline strynboen

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    • http://forums.sohc4.net/index.php?PHPSESSID=a06enmef91i1tvemjmrvr6c7h6&/topic,60973.0.html
Re: 78 cb550k carb "O"rings and a BIG supplier site
« Reply #7 on: July 16, 2010, 02:44:16 PM »
 :)better late ,,then newer   cms nl europa..better parts then david,,,but no service..all over pc..
« Last Edit: July 17, 2010, 01:45:49 AM by strynboen »
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Offline brewsky

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Re: 78 cb550k carb "O"rings and a BIG supplier site
« Reply #8 on: July 16, 2010, 04:12:46 PM »
Went thru the same issue with my 750 here:
http://forums.sohc4.net/index.php?topic=71759.0
Ended up using rings for an Artic Cat 250 ATV I found at a local dealer.
The 1 mm rings are too thin.
Part #4505-011 (idle air screw o ring)
Don't know if the 550 carbs use the same or not.
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