Author Topic: My CB550 K3 Restore Project  (Read 13347 times)

Offline Johnny4428

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Re: My CB550 K3 Restore Project
« Reply #45 on: August 29, 2020, 10:05:08 PM »
Its because people, instead of spending 50p, re use the alloy sealing washer so many times it deforms badly and the bolt is tightened even more again and again and again
Looks like somebody tried to get the most out of that one.
1952 Cymoto on Triumph bicycle.
1961 Matchless G3
1974 Honda CB550K1. Running resto,
1978 Honda CB550K3.
1999 ST1100 Pan European 50th Anniversary.
1975,1980,1984,1986 Honda C90’s
1973 Honda CB750K3

Offline heli_madken

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Re: My CB550 K3 Restore Project
« Reply #46 on: August 29, 2020, 11:44:33 PM »
That is annoying! But very common for people to seize it up (or seal it up) to stop it leaking rather than invest in a new sealing washer. I think a good heat and give it wellie. It’s not going to come out otherwise.

Inspired by all your words of wisdom, a glass of wine and a whisky I put my best shifting spanner on it and gave it a good hard whack with my largest lump hammer and there you go  :) -

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Offline Johnny4428

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Re: My CB550 K3 Restore Project
« Reply #47 on: August 30, 2020, 06:58:30 AM »
Shifter? Well done, you will be glad you drank that courage.😂😂
1952 Cymoto on Triumph bicycle.
1961 Matchless G3
1974 Honda CB550K1. Running resto,
1978 Honda CB550K3.
1999 ST1100 Pan European 50th Anniversary.
1975,1980,1984,1986 Honda C90’s
1973 Honda CB750K3

Offline heli_madken

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Re: My CB550 K3 Restore Project
« Reply #48 on: September 03, 2020, 01:43:32 PM »
Finally got all the engine casings clean so I could give everything a coat of paint.

Couldn't resist putting everything together, time for some 550 engine porn -
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First order has arrived from DS, just waiting for the CMS order which includes primary and cam chains and some bearings, hoping to start rebuilding the engine soon-
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Offline heli_madken

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Re: My CB550 K3 Restore Project
« Reply #49 on: September 04, 2020, 11:10:23 AM »
New chains have arrived, primary chain is only slightly smaller than old one -
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Not sure what I was expecting considering it had been hitting the case at two points. The old chain is considerably 'floppier' than the new one and has a lot of lateral movement. I think I saw a picture by Nurse Julie showing how the chain collapses on itself which is certainly the case.

As far as I can tell the new cam chain is exactly the same length as the old one

Offline bruxby-clive

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Re: My CB550 K3 Restore Project
« Reply #50 on: September 04, 2020, 01:53:23 PM »
 Can I ask what paint you used on your engine casings, cylinder head and barrels, they look great?
Just because you are breathing, doesn't mean you are alive.

Offline heli_madken

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Re: My CB550 K3 Restore Project
« Reply #51 on: September 04, 2020, 02:31:47 PM »
Thanks a lot, It is VHT Cast Aluminium paint - https://www.frost.co.uk/vht-cast-aluminium-engine-enamel-high-temperature-paint-312ml/ It probably isnt the same as the original Honda finish but I like the colour and finish and it is easy to apply. Used it before and it is holding up really well on my GL1000, Ken

Offline heli_madken

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Re: My CB550 K3 Restore Project
« Reply #52 on: September 04, 2020, 11:34:43 PM »
inlet manifolds are fitted wrong, screws for vacuum gauge pipes should face outwards

Noted thanks, they are only there as a mock up for the photo I haven't actually assembled the engine as yet
« Last Edit: September 05, 2020, 12:06:27 AM by heli_madken »

Offline Bryanj

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Re: My CB550 K3 Restore Project
« Reply #53 on: September 05, 2020, 06:16:01 AM »
Ken, its a K3 so screws are on carbs not manifolds

Offline Rob62

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Re: My CB550 K3 Restore Project
« Reply #54 on: September 05, 2020, 11:32:37 AM »
Engine looks superb!   8)

Offline bruxby-clive

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Re: My CB550 K3 Restore Project
« Reply #55 on: September 05, 2020, 09:05:09 PM »
Hi Ken, thanks for the info on the VHT paint, will definitely use it if I rebuild my engine, it looks superb.
Just because you are breathing, doesn't mean you are alive.

Offline heli_madken

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Re: My CB550 K3 Restore Project
« Reply #56 on: September 23, 2020, 12:03:06 PM »
Just working on cleaning/checking pistons and fitting new rings.

Number 4 has suffered at the hands of a mechanic who thought a bricklayers scutch hammer was the best tool to remove carbon -
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Some nasty score marks as you can see. It looks like the cylinder has been suffering some light pre-ignition with the pitting you can see, I guess thats why somebody attempted a de-coke. The rest of the piston checks out ok so I am probably going to re-use, what do you think?

It does prove to me as I suspected that somebody has worked on this engine before 

Offline heli_madken

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Re: My CB550 K3 Restore Project
« Reply #57 on: September 23, 2020, 05:40:30 PM »
 :)

Are you trying to imply that I am some mad crazy person that polishes everything -
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Offline Charlie J

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Re: My CB550 K3 Restore Project
« Reply #58 on: September 23, 2020, 08:52:38 PM »
Thanks a lot, It is VHT Cast Aluminium paint - https://www.frost.co.uk/vht-cast-aluminium-engine-enamel-high-temperature-paint-312ml/ It probably isnt the same as the original Honda finish but I like the colour and finish and it is easy to apply. Used it before and it is holding up really well on my GL1000, Ken

Paint looks really good. Can I ask whether you had to use a primer?

Thanks
Charlie

Offline heli_madken

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Re: My CB550 K3 Restore Project
« Reply #59 on: September 23, 2020, 11:07:57 PM »
No Charlie, VHT do sell a primer but I have never used one, just made sure everything was very clean, Thanks!

 

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