SOHC.co.uk Forums > CB750

RS Bike paints can supply cloud silver but.....

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the-chauffeur:

I dunno about the previous answer, but I found Halfords resistant lacquer wasn't when I used it around the neck of a tank . . . I'm pretty sure it was undone by vapours.

Resistant maybe, but proof - nope.

 . . . not sure that's what you want to hear, but hope it helps . . .

kaceyk2:
All info and experiences especially with products is what we need to hear bud, thanks... I am not over worried though , I would have been if you would have said drips from the petrol pump nozzle had took the laquer off..... 
I think the crankcases are not going to suffer from vapour and vapour pressure in a single area like the neck of the tank..
The neck of the tank gave me quite a few rethinks when I sprayed mine.. I knew that wherever I painted up to would leave an edge where fuel would eventually get under... And not wanting to get paint in the tank, deciding where that edge should be was a puzzle.... I thought if I went right over the lip onto where the seal is, then fuel would definately start on that edge straight away, but if I just painted up the vertical edge, then should that start to flake it would be seen straightaways...  I went for the first option there.
ANYWays,
back to the crankcases....
A quick search in the Uk has revealed that it seems very easy to buy VHT clear laquer in an aerosol..but a can seems elusive.... The only one I have found so far is Halfords clear engine laquer.....
I should post up me pics of the tank restoration.....
Hmmm Hope I can find em!

z1100r:
 I dont understand this....hundreds of bikes have been painted using RS paints. They have existed for quite a while now. I cant believe what that women said. They must surely do something suitable for petrol tanks....!! You mean they do all the Candy colours for old Honda petrol tanks but fail to supply anything to prevent petrol damaging it, narrgh...thats wrong..!!

kaceyk2:
  Z1100r  no..bro..CRANKCASES.... they can supply cloud silver...but check the email as to what they said.....

the-chauffeur:

Nah . . . it's not that straightforward.

I've heard/seen plenty of theories on painting engines, and there seem to be very few methods of painting that result in a finish that will withstand fuel drips in the same way as a factory finish.  Most of the over-the-counter paints available now are water soluble, which really doesn't help - and although I said the Halfords stuff lifted with vapours, the point I was trying to illustrate was that although it might be splash resistant, but won't stand up to a leaky fuel tap left overnight.

IIRC 2 pack paint over etch primer together with and lacquer will give about the only finish that's likely to be tough enough to stand up to fuel spills.  And if you can find someone who'll do it, get them to use an older lacquer that's not water based.  Either that, or properly heat treated hot paint (by which I mean cooking it at progressively higher temperatures to cure it over a period of a few days).  That said, you may have no choice with the head and barrels 'cos whatever you use will need to withstand up to about 300deg c.

Good luck.

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