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SOHC.co.uk Forums => CB500/550 => Topic started by: Math on May 10, 2023, 02:29:23 PM

Title: 1977 Cb550 K3 Engine paint
Post by: Math on May 10, 2023, 02:29:23 PM
Hi,  What parts of a 1977 CB550 K3 engine are painted and what are polished aluminum?
What is the recommended paint to use? And would I use a primer or paint straight on?
Thanks
Title: Re: 1977 Cb550 K3 Engine paint
Post by: Laverdaroo on May 10, 2023, 03:07:51 PM
Have a search for Simonitz  engine paint in the thread search, there’s reams of content on it bud


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Title: Re: 1977 Cb550 K3 Engine paint
Post by: McCabe-Thiele (Ted) on May 10, 2023, 03:34:25 PM
No need for primer with the Simonize Silver VHT paint.
Title: Re: 1977 Cb550 K3 Engine paint
Post by: Sesman on May 10, 2023, 04:17:09 PM
Is that true for the engine covers though. I seem to recall some healthy debate over whether they were satin polished and lacquered, or painted and if painted they were a different colour Finish to the cases. I may be wrong by the way.
Title: Re: 1977 Cb550 K3 Engine paint
Post by: Oddjob on May 10, 2023, 04:54:04 PM
Is that true for the engine covers though. I seem to recall some healthy debate over whether they were satin polished and lacquered, or painted and if painted they were a different colour Finish to the cases. I may be wrong by the way.

You can't lacquer polished parts Phil, the paint just slides off. Even scuffing the surface slightly with a scourer to get the satin look would still leave the subsurface of the metal with buffing soap impregnated into the metal, this would then cause the lacquer to flow off it. Honda painted them and then lacquered them, I believe it's called Five Wheel Silver. Plus you'd never get that consistency with polishing, there are some areas that you couldn't reach with a polisher, yet every casing looks exactly the same as the last one.

I did some carb bowls the other week, I had silicon oil on my fingers and I couldn't pick the bowls up, they just slid through my fingers due to how smooth the surface of the metal was. 
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