Honda-SOHC
SOHC.co.uk Forums => CB350/400 => Topic started by: hiltonig on April 28, 2023, 02:38:54 PM
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Hello all question for the purists , how were the gen cover, starter motor, clutch cover cases finished ?, wanting to relocate the factory finish , would cerakote be a modern day equivalent, thanks for your answers
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In short, no, cerakote whilst very good isn't a perfect match. I've actually got a piece that's been ceramic coated in ALU code paint in front of me right now, the finish isn't smooth like the original finish was. It's not as bright either. The cases were sprayed a bright silver and then lacquered, it's believed that back in the day the colour 5 wheel silver was either a good or very close match, it's still available AFAIK.
There is a thread of mine called ceramic coating and on page one is the part I'm looking at right now, a carb bracket.
If you go the spraying way don't forget to use petrol resistant lacquer.
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Well I like the idea of cerakote on the barrels and crankcases , vapour blasting looks nice but it still will go all furry in time, where the crankcases and covers all the same shade of silver ?
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No the crankcase is a flat type of silver and was not lacquered, just left as it was sprayed.
Cerakote is fine for the crankcases as is the way I'm going myself.
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If its a 400/4, the top crank case was painted, the bottom crank case wasn't painted. The barrels weren't painted but I can't remember if the head and/ or rocker cover were painted or not 🤔🤔🤔.
Simoniz SIMVHT31D is the best paint we have found personally.
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You need this:- For crankcases and covers. (check out the sister USA sohc4.net site)
https://www.radwell.co.uk/en-GB/Buy/DUPLI%20COLOR/DUPLI%20COLOR/DE1615/
But last time I imported some from there it cost me £25/can landed after shipping and customs.
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Can you post some pictures of the finish please? Is this a good original match for the alternator, chain and clutch cases?
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;)
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https://www.frost.co.uk/vht-cast-iron-engine-enamel/?gclid=Cj0KCQjwmdGYBhDRARIsABmSEePCbaToXB0usEPUkOpLCJlcM6IJMXOzWiGj0maZBRi7auTU2W44CSAaAoV7EALw_wcB
Available in a range of colours -BiL has done his Fireblade with this paint - including the frame.(https://live.staticflickr.com/65535/52345281344_ba704e179c_o.jpg) (https://flic.kr/p/2nKzfsL)Fireblade engine (https://flic.kr/p/2nKzfsL) by Macabe Thiele (https://www.flickr.com/photos/187487200@N03/), on Flickr
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VHT and Duplicolor is the same paint, made by the same company in the USA. And is OK for water cooled engines that only get up to a maximum of 280c.
Simoniz SIMVHT31D is 800c and is much better for air cooled engines which run at a higher temperature than water cooled.
Edit..... I should have said that the outcome all depends on the prep, regardless of which paint is used.
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Good point Julie about the temperature range.
The word Ceramic Resin sways you away from the lower temperature threshold of the Dupli Colour product.
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Tried the Simoniz ..wrong shade of silver c/w OE finish... I did say crankcases & covers not cyl heads, barrels. Horses for courses I guess.
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I have to disagree. Simoniz SIMVHT31D is a perfect match to OEM finish. It also lasts very well and is really easy to keep clean. We've painted 100's of engine cases and they all look fantastic. But yes, horses for courses, as you say. I used the Duplicolor on the head of one of my own engines as a trial for a customer and it was pretty rubbish, it finished up a more bronze colour and is already blistering after 5 years.
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I wanted my frame powder coating in Nut Brown so I haven't a clue about shades of silver. 8) 8) 8)
I was you will probably know talked out of Nut Brown so ended with boring black - my only input was I went for a Matt finish frame. ;D ;D ;D
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The Dupli Color paint clearly says ok up to 500c.
Most engines can't go beyond 250F without risk of major damage, talking external temps, not internal temps, pistons for example run much hotter than 250F
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Product Description
Warranty
DE1615
ENGINE ENAMEL
WITH CERAMIC RESIN
AEROSOL PAINT
GLOSS
ALUMINIUM COLOUR
UP TO 500 DEGREES F
12 OZ
FACTORY WARRANTY MAY NOT APPLY. RADWELL 2-YEAR WARRANTY INCLUDED
F not C :o And cooling fins get a lot hotter than 250F on the ends.
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Product Description
Warranty
DE1615
ENGINE ENAMEL
WITH CERAMIC RESIN
AEROSOL PAINT
GLOSS
ALUMINIUM COLOUR
UP TO 500 DEGREES F
12 OZ
FACTORY WARRANTY MAY NOT APPLY. RADWELL 2-YEAR WARRANTY INCLUDED
F not C :o And cooling fins get a lot hotter than 250F on the ends.
Who mentioned cooling fins? I specifically said I use the Duplicolor on Honda alloy crankcases and side covers. It's good to 260°C ...if the crankcases on any of my engines reached anywhere near that temperature I wouldn't be worrying about the shade of silver.
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So what paint do you use on the 750 head and barrels? You put a photo up of 750 cases, I'm assuming they were a photo of your cases, so what paint did you use for the rest of the engine?. Show me a photo of the complete finished engine in the bike.
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Cylinder heads do not go above 375F as a rule, As Jo says, if they do the paint on it is the least of your worries. So 500F should be more than ample.
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So what paint do you use on the 750 head and barrels? You put a photo up of 750 cases, I'm assuming they were a photo of your cases, so what paint did you use for the rest of the engine?. Show me a photo of the complete finished engine in the bike.
If you read the title of this post it is titled 'Cases OE Finish' ... so I answered that question, based on my own personal preference and that's why I put up a picture of my CB750 cases.
I wish I could show you a picture of my completed bike but it's been in pieces since 2009 and won't be reassembled anytime soon I guess ...main reason I am concentrating on my smaller bikes like CB92 etc, as things have moved on since 2009 in a now market flooded with CB750 'show ponies'
What do I use on my cylinder head, barrels etc. ? ... Well that's a totally different question to the title. Answer is Simoniz paint ... exactly the same spec/code, as detailed on here but I only use because it handles a higher temperature. I tried the Simoniz on the crankcases and it just didn't look right compared with OEM ... so I gladly pay 25 quid a can for the Duplicolor, as I am very happy with the finish, as are loads of folks on the USA site.
Oddjob ... Sorry ... I chickened out on using the Duplicolor on top-end components and I am still not convinced that it wouldn't be perfectly fine to use the Duplicolor paint on those parts too. Pretty sure the USA guys use it on their top ends.
As I said before horses for courses.
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Ah, OK, I understand now. You're not working on CB SOHC/4's at all then, oh well, never mind.
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Ah, OK, I understand now. You're not working on CB SOHC/4's at all then, oh well, never mind.
??? I am working on my 500/4 K0 cylinder head as we speak ? It's just the 750 I have a bit of a downer on ... literally too many imports around now but I will get over it !
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Ah, OK, I understand now. You're not working on CB SOHC/4's at all then, oh well, never mind.
??? I am working on my 500/4 K0 cylinder head as we speak ? It's just the 750 I have a bit of a downer on ... literally too many imports around now but I will get over it !
Yes, luckily we only ever build and personally own UK models ourselves, so we don't have that problem to worry about.
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How petrol resistant is the Simoniz paint after baking. It seems almost inevitable that some leaks will occur onto the crankcase at some stage in fettling. Does it need resistant lacquer as well ?
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It's highly petrol resistant once baked and doesn't need lacquer. A small fuel spillage won't remove the paint but I'm sure if you soaked something painted in Simoniz for quite some time, the paint will come off, as it would with any paint. Once carbs are set up, there shouldn't be any fuel leaks anyway, except maybe down the overflow tubes which dangle down under the bike well below any painted surfaces anyway.
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Ah, OK, I understand now. You're not working on CB SOHC/4's at all then, oh well, never mind.
??? I am working on my 500/4 K0 cylinder head as we speak ? It's just the 750 I have a bit of a downer on ... literally too many imports around now but I will get over it !
Bloody imports!🤭🤭 I only have one bike that’s not an import and it drips oil all over the place.😳