Honda-SOHC

SOHC.co.uk Forums => CB500/550 => Topic started by: rocker61 on December 16, 2020, 01:09:15 PM

Title: vht engine paint
Post by: rocker61 on December 16, 2020, 01:09:15 PM
hello wondering if I can get some advice on vht paint for my engine.i want to do a silver aluminium case /black cylinders combo.can you people give me advice on make/best shades ?thanks in advance
Title: Re: vht engine paint
Post by: Nurse Julie on December 16, 2020, 01:15:38 PM
The best silver aluminium paint is Simoniz VHT, part number SIMVHT31D. If you want any photos of Honda SOHC/4 engines done with this, just shout.
Title: Re: vht engine paint
Post by: cantarauk on December 16, 2020, 04:01:06 PM
Second on what Julie said

see - http://www.sohc.co.uk/index.php/topic,11161.60.html
Title: Re: vht engine paint
Post by: gtmdriver on December 17, 2020, 07:43:22 AM
POR15 engine enamel is also good. It has a very high pigment content and is petrol and acid resistant but it needs to be thinned with white spirit and sprayed. It leave brush marks if you brush it on.
Title: Re: vht engine paint
Post by: rocker61 on December 17, 2020, 09:20:45 PM
thanks to you wonderful people for replying so fast, this forum never lets you down. nurse Julie if I can I will take you up on a couple of pics please
Title: Re: vht engine paint
Post by: McCabe-Thiele (Ted) on December 17, 2020, 09:33:23 PM
All my pics on my ongoing but presently stalled project are using the same paint Page 8.

http://www.sohc.co.uk/index.php/topic,23291.0.html

Title: Re: vht engine paint
Post by: Nurse Julie on December 18, 2020, 09:53:25 AM
Here are some photos I've just taken. I've included a black / silver engine which you mentioned you would be doing. I didn't want to take photo of my 400/4 engine as the bike is filthy dirty but the engine paint is as good today as when we painted it over 4k miles ago.
Edit... Should have mentioned that all these engines were painted when the engines were fully stripped, cleaned and degreased prior to overhaul. The finish is all down to the prep. The paint needs to air cure and the oven cure so cannot be painted with the engine complete.

500/4

[attachimg=1]

My 750/4

[attachimg=2]

550/4

[attachimg=3]

[attachimg=4]
Title: Re: vht engine paint
Post by: Dave on December 18, 2020, 05:18:36 PM
Very nice Julie...

Dave
Title: Re: vht engine paint
Post by: rocker61 on December 18, 2020, 06:46:33 PM
nurse Julie thanks for the pics, much appreciated, just hope I can get mine looking that good
Title: Re: vht engine paint
Post by: smoothoperator on December 18, 2020, 08:10:18 PM
Have I read that the liners can come loose when subjected to the oven treatment or is my brain just overloaded?
Title: Re: vht engine paint
Post by: Nurse Julie on December 18, 2020, 08:46:01 PM
Have I read that the liners can come loose when subjected to the oven treatment or is my brain just overloaded?
Your brain is indeed correct but if you put the barrels on blocks  or a barrel stand, the liners don't fall out.
Title: Re: vht engine paint
Post by: Laverdaroo on March 16, 2021, 09:21:59 PM
Hi Julie, did you use  a laquer on top of that or is that the finish from the can, cant find any info and if you use the simonitz part number is describes it as matt finish. Can you be of any help?

Cheers and lovely bike by teh way, mines coming on albeit strapped on funds just now but bits on their way 8)

Title: Re: vht engine paint
Post by: Nurse Julie on March 16, 2021, 09:25:38 PM
Hi Julie, did you use  a laquer on top of that or is that the finish from the can, cant find any info and if you use the simonitz part number is describes it as matt finish. Can you be of any help?

Cheers and lovely bike by teh way, mines coming on albeit strapped on funds just now but bits on their way 8)
No lacquer needed and yes, it does say satin on the tin but it's actually a semi satin / semi gloss finish. Simoniz do a gloss finish as well I believe and that is a very, very glossy finish.
Title: Re: vht engine paint
Post by: Laverdaroo on March 18, 2021, 01:02:30 PM
Great stuff, thanks Julie that's really helpful and saves me chasing my tail asking a million suppliers a million questions.

The builds coming on, frame n swinger done and waiting powder coat, front wheel done, gotta try building the rear next week when it comes) and never done iot before so that's something to have a ponder on. :o

Brakes cleaned and re done, and thankfully all the moving parts on the systems on the bike that didn't turn or work ,now do so beautifully. That last three weeks in the shed haven't been totally wasted. Ive even managed to map out the holes and drill the fornt disc after getting it skimmed down to remove the pitting.

After getting the bike Ive cleaned the carbs, new points, plugs caps, valves done and everything to get it started for the first time in yars, it was parked up in 1981!

started on the second dab, albeit a bit lumpy but got her unbalanced but ticking over so the full build started now I know she's alive. Breaking the engine next to get that cleaned and refinished so really looking forward to getting on with the build.

Back to cleaning, polishing and fiddling then!

Oh and Ive got a chap building me a new collector to allow for a twin exit, reverse cone pipe, set up, happy days!

This forum is fantastic and been such a help reading through all the bits and pieces on here, some of which wouldn't have occurred to me, to the extent that I now have a full bright zinc plating set up bubbling away in the shed, re coating all my nuts and bolts bringing them up to new finish......brilliant!
Title: Re: vht engine paint
Post by: Sesman on March 18, 2021, 02:16:52 PM
Just a quick question please. Which in popular opinion is the closest match to original....SIMVHT31C or 31D?

Title: Re: vht engine paint
Post by: Nurse Julie on March 18, 2021, 02:21:58 PM
Just a quick question please. Which in popular opinion is the closest match to original....SIMVHT31C or 31D?
They are so close, you can't tell the difference unless they are side by side and even then you have to look real hard. SIMVHT31C is no longer available.
Title: Re: vht engine paint
Post by: Sesman on March 18, 2021, 03:01:31 PM
Thanks, Julie. 31D it is.
Title: Re: vht engine paint
Post by: Laverdaroo on March 18, 2021, 04:49:05 PM
I've managed to find 4 tins on ebay so all good but thanks for all the help. When i get five minutes not in the shed, I'll bob some build photos up on here so all can witness the struggle ;D
Title: Re: vht engine paint
Post by: Erny on April 06, 2021, 09:14:55 PM
Will re-open this thread to not create another one

I'm searching for paint solution too (to paint my "new" refurbished valve cover). Did not find recommened Simonitz nearby, just in UK (shipping+customs duties+vat...), so was looking for something here.
Found this product https://www.vhtpaint.com/high-heat/vht-engine-enamel (Nu-Cast™ Aluminum color).
Does anybody by chance have experience with it please?

Manufacturer seems to be division of Dupli-Color, so probably equivalent to their product https://www.duplicolor.com/product/engine-enamel-with-ceramic/
Title: Re: vht engine paint
Post by: Spitfire on April 07, 2021, 10:26:08 AM
Hi, I used VHT paint on my F1 and it has lasted well, I painted it in 2006/7.
The head, barrels etc were done separately and cooked in the oven, the crankcases were painted and were left to cure when the engine was run.
(https://imagizer.imageshack.com/img923/7032/K6dBfz.jpg)
(https://imagizer.imageshack.com/img923/4823/Zk0v2v.jpg)

Cheers

Dennis
Title: Re: vht engine paint
Post by: Erny on April 07, 2021, 10:15:43 PM
Thanks, as for the cooking what temp and time would you recommend?
Title: Re: vht engine paint
Post by: Spitfire on April 08, 2021, 09:15:50 AM
It's all on the can, but don't mix up fahrenheit and centigrade, I did and ended up with yellow silver, which I had to redo.

Cheers

Dennis
Title: Re: vht engine paint
Post by: Erny on April 08, 2021, 10:26:56 AM
Thanks, I have big label with plenty of waring/safety instructions (SK translations) stuck on the can that overlaps instructions, need to peel it off
Title: Re: vht engine paint
Post by: cantarauk on April 14, 2021, 09:33:15 AM
(https://i.ibb.co/bsPdGz8/IMG-6561.jpg) (https://ibb.co/QPfmxr1)

(https://i.ibb.co/5BM859g/IMG-6562.jpg) (https://ibb.co/KF0q9Gp)

(https://i.ibb.co/CV61PDZ/IMG-6563.jpg) (https://ibb.co/NWrVTbP)

Primer says nothing about baking

Engine Enamel bake for 1 hour at 200F (93C)
Title: Re: vht engine paint
Post by: Trigger on April 14, 2021, 10:08:42 AM
That paint is only good for engines up to 288c ( suitable for water cooled ) You need a paint that is rated over 350c for air cooled engines and, as Julie has pointed out SIMVHT31 D ;)
Title: Re: vht engine paint
Post by: Erny on April 14, 2021, 10:09:52 AM
I already used it on valve cover...
Will let you know how it behaves over time
Title: Re: vht engine paint
Post by: royhall on April 14, 2021, 04:54:34 PM
Good old SIMVHT31D. Every engine I do ends up painted with that. Just done the top end of my GS1000 with it, and I don't care if it's not an accurate Suzuki colour as it looks great. Plus, once it's been fired in the oven that stuff is almost indestructible.
Title: Re: vht engine paint
Post by: Erny on April 14, 2021, 10:01:48 PM
If I could buy it here, I would use it too...  ::)
Title: Re: vht engine paint
Post by: Sesman on April 15, 2021, 11:02:21 AM
Amazing 90degc.

Simoniz VHT31D states 230deg C . I’ll have to put mine in the tandoor.
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