Author Topic: Cb 550 ss spain  (Read 2554 times)

Offline Bryanj

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Re: Cb 550 ss spain
« Reply #90 on: April 05, 2021, 09:51:54 PM »
What does the bore actually measure? Is it 58.5mm

Offline murdock

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Re: Cb 550 ss spain
« Reply #91 on: April 05, 2021, 10:23:39 PM »
Yes ! More or less

Offline murdock

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Re: Cb 550 ss spain
« Reply #92 on: April 06, 2021, 06:56:16 AM »
I say more or less because I do not have an alexometer or an interior caliper, but measuring the skirt of the piston that seems within tolerance it is very close

Offline Bryanj

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Re: Cb 550 ss spain
« Reply #93 on: April 06, 2021, 07:23:58 AM »
58.5 is standard size for a 550 so you need standard rings and i wouldnt hone just take the glaze off with emery cloth or a "flap wheel"

Offline K2-K6

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Re: Cb 550 ss spain
« Reply #94 on: April 06, 2021, 08:47:00 AM »
58.5 is standard size for a 550 so you need standard rings and i wouldnt hone just take the glaze off with emery cloth or a "flap wheel"

Yes, about "glaze busting" but I was unsure how that would translate into Spanish language  :) "rompiendo el esmalte"

Offline Bryanj

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Re: Cb 550 ss spain
« Reply #95 on: April 06, 2021, 10:05:22 AM »
Me neither and really unsure about flap wheel but as i only speak lancastrian the rest of the country never mind the world is at a dissadvantage

Offline murdock

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Re: Cb 550 ss spain
« Reply #96 on: April 06, 2021, 10:30:27 AM »
in Spanish it would be grinding well or griding tooth

Offline murdock

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Re: Cb 550 ss spain
« Reply #97 on: April 06, 2021, 07:52:49 PM »
Hello, today I removed the other pistons, I measured them and they are all the same as the first, the rings are healthy but worn, they have a lot of gap, they were bought 6 years ago in cruizing image or whatever it is called, I think they are not very good, just about 2000 km, I suppose that due to the velocity stacs there should be other signs of wear, there is only a small friction in the piston 3 and 4, I will buy a kit of standard size imd rings, (or do you recommend others?) I hope they are of good quality, I have taken a photo of the tool in question, whatever its name is ,ha ha

Offline Erny

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Re: Cb 550 ss spain
« Reply #98 on: April 06, 2021, 10:12:02 PM »
If I can ask - where did you buy that tool?

I'll be working on my engine probably next winter so I want to prepare myself ;)
CB750K7 US model (1977)
CB550K1 US model (1975)

Offline Bryanj

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Re: Cb 550 ss spain
« Reply #99 on: April 07, 2021, 12:06:42 AM »
That may take too much metal off. I am at work so when i get home i will look at ebay to get a pic of what you need

Offline murdock

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Re: Cb 550 ss spain
« Reply #100 on: April 07, 2021, 07:38:49 AM »
ok, I await your answer, I am curious, other times I have done it with this tool, it has a nut that tightens the spring to regulate the pressure it exerts on the barrel, it can be very soft at low revs

Offline Bryanj

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Re: Cb 550 ss spain
« Reply #101 on: April 07, 2021, 03:05:33 PM »
Look at ebay item 184430930041 you would need a 60mm one. The tool you have will actually remove metal and make the clearance bigger the one i link to will just remove the glaze on the bore allowing new rings to seal better.
Honda rings are best but dearest as well.
I have some of those flap wheels here but not sure of postage cost to you

Offline murdock

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Re: Cb 550 ss spain
« Reply #102 on: April 07, 2021, 07:14:52 PM »
ok, it is a good excuse to replace the ones I have that are already kaput, what grain do you advise me? 120? I imagine that a very fine pass with oil

Offline Bryanj

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Re: Cb 550 ss spain
« Reply #103 on: April 07, 2021, 09:13:46 PM »
No oil just a pass through and very good wash off afterwards

Offline murdock

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Re: Cb 550 ss spain
« Reply #104 on: April 09, 2021, 09:38:12 PM »
I have it

 

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