SOHC.co.uk Forums > Project Board

Simoniz VHT Paint

(1/3) > >>

Theoldboycarter:
Has anyone had experience of using Simoniz VHT aerosol paint on engine casings? I used it on the clutch cover, final drive sprocket/starter motor cover and alternator cover on my CB400F. The instructions on the tin say to cure the paint by baking in an oven for up to 1 1/2 hours and up to 220 degrees c. I was a bit wary of getting the aluminium too hot and it distorting so I only heated it to about 150 degrees. I was quite pleased with the finish and colour, but the paint still seems quite soft and had no resistance to petrol at all when some dripped on it from a dodgy petrol tap connection. Is it ok to heat aluminium castings to 220 degrees, or would baking for longer compensate for the lower temperature, or should I find some other way of refinishing the casing?. Some people have suggested having them polished, but I don't really fancy that. Any thoughts greatly appreciated. With thanks, Roger.

Rayzerman:
Best let the paint sit a few days so the solvents migrate out of it, then bake slowly at 100-150 to help it even more.  One day you'll fire up the engine and that will be the final bake so to speak. 

Nurse Julie:
We have painted and cured so many engines with Simoniz SIMVHT31D that I've lost count now but it's over 100. Do exactly as it says a on the tin, letting air cure as well as oven cure and it turns out perfectly. If you skip any part of the process, including skimping on the prep, you won't get a good outcome. The paint shouldn't be soft at all.

Oddjob:
Has anyone put a laser temp gun on these engines after a good thrashing? I’d be interested in what temp they are at.

Oddly the web says any temp above 150 risks distortion especially with alloy with magnesium in it. Melting point of aluminium is around 660c so you’d think 220 would be safe but it appears not.

Spitfire:
Just beware I used usautomotive VHT paint on my barrels and head, but got it wrong, used 2 hours at 200oc instead of 1 hour and it came out a lovely metallic gold colour. Repeated at the correct time and it was perfect.

Cheers

Dennis

Navigation

[0] Message Index

[#] Next page