Zinc Chromate

[nautinunu]

If I prime the aluminium engine parts with zinc chromate, will it adhere to them, or is there another product that I could use as a suitable primer?

[charlesp]

If you're planning a finish as close as possible to the original then Hammerite Silver Smooth is a pretty close match. They - Hammerite that is - recommend their own 'Special Metals Primer', whose applications include aluminium.

I've known people just use the Hammerite Smooth on its own and get a reasonably long lasting finish.

[Keith.P]

I have use the Hammerite primer before and wasn't that impressed with it, as its quite thick and makes the Hammerite top coat more prone to damage than using it directly.

[RickUK]

Dunno about the zinc part, but certainly chromate used to be or is the preferred primer for aluminium - just seems difficult to get now - maybe because of the chromate content!

I always use a primer on aluminium to get a good key and a bond for subsequent paints, but can never find any 'on the shelf' anywhere, so have to order it from my local inronmonger - the paint is usually called a 'special metals primer' to cover a mulititude of sins I guess.
Destructions on the tin say that it can be sprayed over when dry, but I leave it to cure for three days or so, espectially if I am going to follow with Hammerite

[goodwoodone]

Hi there,
If you want Zinc Chromate try these people http://www.lasaero.com/site/products/ar ... =G03H0GVF9 very good stuff but use outside with a mask
Hope this helps