Honda-SOHC

SOHC.co.uk Forums => CB500/550 => Topic started by: Erny on June 20, 2019, 01:36:36 PM

Title: 550K1 - carb rebuild set
Post by: Erny on June 20, 2019, 01:36:36 PM: As I still have issues with my stock carb 022A (550K1 1975, USA model), I'm preparing for eventual rebuild

Can you please recommend proven source of carb parts (kit)?
I found one on 4into1 https://4into1.com/carburetor-repair-kits-complete-set-honda-cb550k-1974-1976/ - but not sure about quality
They claim kit comes from Taiwan

Ideally if I can buy it in EU due to taxes/shipping...

I want to buy at least needle valves, needles with clips and emulsifier tubes, viton rings
Title: Re: 550K1 - carb rebuild set
Post by: Raymond_Y on June 20, 2019, 09:13:39 PM: If you just want the o rings to rebuild the carbs you can buy them individually on eBay from specialist suppliers such as sealsuppliesuk at a fraction of the cost of the specialist kits. I got enough for 6 sets of carbs for £20. You also have the option to upgrade to Vito seal if you prefer.

Raymond
Title: Re: 550K1 - carb rebuild set
Post by: Trigger on June 20, 2019, 09:56:38 PM: Order a carb kit from Cruzin and replace the o rings with Viton from Gerben in Holland. If you use nitrile o rings, they swell up on contact with modern fuel ;) ;)
Title: Re: 550K1 - carb rebuild set
Post by: paulbaker1954 on June 20, 2019, 11:03:24 PM: Quote from: Trigger on June 20, 2019, 09:56:38 PM
Order a carb kit from Cruzin and replace the o rings with Viton from Gerben in Holland. If you use nitrile o rings, they swell up on contact with modern fuel ;) ;)

Absolutely 2nd Graham’s sound advice!!!
Title: Re: 550K1 - carb rebuild set
Post by: Erny on June 21, 2019, 11:26:22 AM: Thanks guys!

So, with regards to viton O-rings, I need to know sizes and qty used...

I've seen it some time ago on the forum (here or us) but cannot find it now..

I need this for CB550K1 (carbs 022A) and also for my CB750K7 (PD41A carbs)

Thanks!
Title: Re: 550K1 - carb rebuild set
Post by: Moorey on June 21, 2019, 11:33:45 AM: I was looking for the list of o rings sizes the other day and couldn’t find it either. Anyone know where it’s gone. I can’t remember if it was on here or the USA site.
Title: Re: 550K1 - carb rebuild set
Post by: Seabeowner on June 21, 2019, 01:15:37 PM: For 022A & 627B carbs I used.
Float valve     5mm x 1.5
Main jet     3.5mm x 1.2
Float bowl     68mm x 2.0 But found it a bit big on dia.
Fuel tee     7mm x 2.0
Drain screw 5.5mm x 1.5
Title: Re: 550K1 - carb rebuild set
Post by: Raymond_Y on June 21, 2019, 01:26:19 PM: http://www.sohc4.net/carb-o-ring
Title: Re: 550K1 - carb rebuild set
Post by: Raymond_Y on June 21, 2019, 01:32:54 PM: The sizes are also in the parts list, which lists the float bowl size as 67 x 1.9 and the fuel T as 7.8 x 1.9.

Raymond