Author Topic: My CB550 K3 Restore Project  (Read 5370 times)

Offline Johnwebley

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Re: My CB550 K3 Restore Project
« Reply #105 on: January 16, 2021, 02:42:36 PM »
It does sound sweet.

I managed to like the video. But couldn't comment.




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lifelong motorcycle rider,and fan

Offline heli_madken

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Re: My CB550 K3 Restore Project
« Reply #106 on: January 19, 2021, 05:34:22 PM »
But couldn't comment.
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Thanks I have fixed the comment thing.

Look what I have got -
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My next project in from the US, perhaps not as sexy as a Z or an A but its a CBX at the end of the day and I have always wanted one.

Cosmetically the bike isnt perfect and its obvious it hasnt run for a while as the tank is rusty inside and the air box had a very large mouse nest. I spent a couple of days checking over and replacing oil, plugs etc and this afternoon hit the starter.

I only intended running her for a short while just to assess for any nasty mechanical problems but I am glad to say after a few seconds on the starter it sprung in to life. I had a nasty fuel oveflow problem on number six due to a stuck float so I shut down but in the meantime the sound was fantastic.

So this will be another bare frame restoration, my plan is to change the colour (dont like the white) possibly to the Z red colour (Candy Glory Red).

I have to say there isnt an ounce of rust on this Michigan bike, compared to the initial work on my 550 it is a dream to work on albeit a lot more complex!

Offline Kelly E

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Re: My CB550 K3 Restore Project
« Reply #107 on: January 20, 2021, 08:04:06 PM »
Awesome project. We looked at one just like yours but it was too much money for the amount of work it was going to need. Some people want restored prices for their projects. :o We do have it's brothers, the 750F and 900F. 8)
The Rust Brothers Garage Collection
1974 Honda CB550 K0
1975 Honda CB400F Super Sport
1979 Honda CB750F Super Sport
1980 Suzuki GS1100E
1982 Honda CB900F Super Sport
1984 Honda VF700S Sabre
1984 Honda VF1000F Interceptor
1990 Moto Guzzi 1000 Le Mans
1994 Kawasaki Concours ZG1000
2006 Harley Davidson Fat Boy

Offline heli_madken

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Re: My CB550 K3 Restore Project
« Reply #108 on: January 25, 2021, 04:35:46 PM »
Yes they can eat money, I think I have touched lucky though as the engine itself seems in very good order.

On with my 550, despite the weather I have got part way through the painting process. I stripped the tank back to bare metal partly with a DA sander and the rusty underneath with a power file. For the more difficult areas I used a chemical stripper. After a good rub down with wet and dry I gave the whole tank a wipe over with phosphoric acid to kill off any remaining rust and prevent any surface rust developing in the damp conditions.

Next up was a coat of acid etch primer followed by a guide coat of 2K primer. There where a few little dings that needed to be taken care of with filler then a further coat of primer.

The colour I am going for is Flake Sunrise Orange which needs a silver base coat which was applied next and allowed to dry.

Then I applied 3 coats of the colour, I dont want it to go any darker so I have stopped here -
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Really pleased with the colour, once I have applied the flake and clear coats I think it will look great.

I will let this bake for a couple of days in my purpose made drying oven (otherwise known as my wife's airing cupboard) before moving on to the side panels which I am going to do based on the 750 K3

Offline heli_madken

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Re: My CB550 K3 Restore Project
« Reply #109 on: January 30, 2021, 05:46:08 PM »
Making progress with the paint really pleased with it so far, I have gone with a modified 750 K3 style -

Before stripping the tank I made a paper template to help me get the top line of the stripes similar to the original -
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Then masked out the initial black panel -
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Allowed this to dry overnight then did a 6mm wide white line -
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For the inner 8mm wide line I have gone with silver as opposed to gold. The original Honda gold must have been very 'reddy' all the golds I have just dont seem to go with the deep orange colour, I am happy with how it looks -
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Test fitting on the bike I could not be happier. The side panel badge gave me some trouble to start with but I found the best method was to spray on two heavy coats of white followed by a light coat of black. Once cured I could carefully sand the black away with some 800 grit wet and dry and a small flat block to reveal the white on the proud sections. I will do the tank badges in the same way but it will be silver and white to make the badge stand out more against the black panel -
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Next up is to use some flake carrying intercoat on the orange areas quickly followed by some 2K clear. Looking at the weather I dont think I am going to be able to do this for a while so I will carry on with other stuff.
« Last Edit: January 30, 2021, 05:47:50 PM by heli_madken »

Offline Menno

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Re: My CB550 K3 Restore Project
« Reply #110 on: January 30, 2021, 09:00:15 PM »
Interesting work.
I am going to do something very similar for a German customer.

Offline heli_madken

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Re: My CB550 K3 Restore Project
« Reply #111 on: February 04, 2021, 11:36:32 AM »
The joys of painting....

Did the sensible thing and did a test panel early this morning using the flake carrier intercoat and left it for an hour to make sure everything was ok, looked lovely.

So pressed on to do the tank and panels, as I went back to the first piece I coated I could see it reacting, watched as all the panels went the same way -
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You do have t be very careful what you spray over these COB paints, in hindsight I should have sprayed a coat of 2K clear which generally isnt reactive.

Oh well start again, I wont have time now before I move house so It will be next year before I can get back to this probably.

Offline paul G

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Re: My CB550 K3 Restore Project
« Reply #112 on: February 04, 2021, 12:22:54 PM »
Nightmare i do feel your pain after suffering the same fate on a couple of occasions  :(
It was looking so good as well.
Honda CB400 4
Honda CB550 K3
Honda CB750 UK K1
Kawasaki Z650 C2
Kawasaki Z650 cafe racer

Online Oddjob

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Re: My CB550 K3 Restore Project
« Reply #113 on: February 04, 2021, 10:04:57 PM »
I have a NOS CB550F Flake Sunrise Orange panel and TBH I don't think yours was the same, it has really large flakes in the paint and the orange is much more vibrant, not saying this to be critical as it may not even matter to you and hats off for attempting to spray your stuff in the first place. However as your going to redo them maybe the info would help if your going for the standard paint look. It can be deceptive posting pics on forum as it depends on lots of stuff when the pictures are taken, it could be yours is perfect but the pictures don't show it.

If you would like to borrow the panel for a paint comparison that could be arranged as your not that far from me.
Don't play stupid with me, I'm better at it

Offline heli_madken

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Re: My CB550 K3 Restore Project
« Reply #114 on: February 04, 2021, 10:48:46 PM »
Thanks Oddjob, I think you have pointed out everything I have done wrong on this build so far it is just what I needed to spur me on, i will get there in the end, thanks again, ken

Online Oddjob

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Re: My CB550 K3 Restore Project
« Reply #115 on: February 05, 2021, 02:36:36 PM »
Oh dear, it was not my intention to point out things you’ve done wrong, if I see something that I think you maybe don’t know about or that you hadn’t spotted then I feel obliged to say something. However if I feel it’s something that’s not critical i opt to say nothing, like the paint, the colour may be your choice etc, however as you were doing it again I thought I’d mention it.

Would you like to borrow the panel?
Don't play stupid with me, I'm better at it

Offline heli_madken

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Re: My CB550 K3 Restore Project
« Reply #116 on: February 05, 2021, 03:06:14 PM »
Thanks, dont forget what you are looking at is a matt finish base coat initially then an intercoat containing the flake. You will not see the true colour or how the flake looks until several coats of clear are applied which will lift the colour and change its appearance significantly.

It is incredibly difficult to match the Honda colour exactly as modern paints behave in a completely different way. After spraying on the Silver base coat each individual coat of orange will change its colour towards red. Ideally I think two coats would give the desired effect but its very difficult to get an even finish so I needed to apply three.

As far as I am concerned I am not shooting for originality with this build I have polished too many bits for that, rather I am hoping to achieve something I like.

Online Oddjob

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Re: My CB550 K3 Restore Project
« Reply #117 on: February 05, 2021, 03:43:07 PM »
Then that’s fine, if the colour is how YOU want it then it doesn’t matter what other people think, IMO there are far too many people opting for the original look, yes the original was fine but it wasn’t perfect, far from it, if your unhappy with some aspects of the bike you should be able to change them without someone constantly telling you that that parts not original or that year never came in that colour etc.
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Offline Macabethiele (Ted)

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Re: My CB550 K3 Restore Project
« Reply #118 on: February 06, 2021, 12:14:17 PM »
Just read your thread - some great pictures of the rebuild(s) it will spur me on for my project 400.
Honda CB400F2 under restoration
Jeep Grand Cherokee WJ
Jeep Grand Cherokee WK
Mercedes R129 SL500

Offline heli_madken

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Re: My CB550 K3 Restore Project
« Reply #119 on: February 22, 2021, 12:16:18 AM »
Thanks Ted, I enjoy reading your posts hope everything works out for you.

I could not leave this alone so pulled some very late nights and worked between packing to get it done. Some minor imperfections but these will polish out when I get to the flatting stage. In the end I did not go the flake look as my wife said it 'looked too girly' and I trust her judgement!
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Happy with the results not sure how close to original it is but I like it

 

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