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| how to deal with heat rust https://www.ausmini.com/forums/viewtopic.php?f=2&t=16874 |
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| Author: | The Scotsman [ Sun Mar 05, 2006 9:32 pm ] |
| Post subject: | how to deal with heat rust |
So how do you deal with heat rust, is is a simple sand it back and prime it ? Or is it more complex than that? Didn't get heat rust problems in Scotland... |
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| Author: | awdmoke [ Sun Mar 05, 2006 10:13 pm ] |
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You mean like on an exhaust manifold? Yeah, just wire buff it - but you will need to use a paint that is rated for the temperature. If you are just using a primer Inorganic Zinc Silicate (or IZS) is good up to 400C Most cold galvanizing paints are IZS based 
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| Author: | The Scotsman [ Mon Mar 06, 2006 9:01 am ] |
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No, its the damage that you get on the body work over here, I assume it's caused by the sun burning the paint away and causing what looks like rsut to appear. |
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| Author: | sports850 [ Mon Mar 06, 2006 9:21 am ] |
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Ahhh , ok , you mean surface rust , normally caused by the paint wearing thin and not having the polish kept up to it . Mainly just a matter of caring for your paintwork and don'tbuff the hell out of it too often . It's not a common problem but can happen with cars that haven't bee cared for all that much . edit , And if you're wanting to fix what's already on a panel then sand it back to bare metal , prime and paint again though you'll probably have to do most of the panel (not sand all back , just the bits with surface rust , but paint all the panel) as the rest will probably be thin as well . |
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| Author: | mickmini [ Mon Mar 06, 2006 8:46 pm ] |
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he he that's funny - heat rust - i like the way you think scotty 
mate, rust is rust, just oxidisation of the iron in the steel. heat does not make it happen, cold does not make it happen. the only difference between the rust we get here and the rust you get in Scotland is the climate  over here there is not enough moisture in the air or salt on the road in most places to rust something as rapidly as in Scotland. thats all there is to it.
michael |
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| Author: | fuzzy-hair-man [ Tue Mar 07, 2006 8:39 am ] |
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mickmini wrote: mate, rust is rust, just oxidisation of the iron in the steel.
heat does not make it happen, cold does not make it happen. l Heat does speed up rust, ever taken some steel wool and stuck it in a bunsen burner ? In real life heat and humidity probably help, heat alone probably evaporates the water before it gets much chance to rust (guessing again) |
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| Author: | The Scotsman [ Tue Mar 07, 2006 9:56 am ] |
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its a very different type of rust to what I used to find in customers mini's back home, here its mostly on the more prominent pannels and on the top. Back home it was underneath and everywhere! In Scotland a new front end would last two or three good winters before the salt just eats the thing away. |
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| Author: | Morris 1100 [ Tue Mar 07, 2006 4:29 pm ] |
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When I visited Scotland in 2001 I was taken to a panel shop in near Irvine and I was amazed what they had to do to repair a car. The bloke there was making a new door for a MK 2 Escort. He had a door skin but he had to make whole the lower half of the inside of the door. I told him that in Australia we would just go to the wreckers and grab a second hand door! He called me an arse.
Where I live I can leave a panel in bare metal in my shed and go back a couple of months later and it still has no rust.
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| Author: | The Scotsman [ Tue Mar 07, 2006 6:02 pm ] |
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I used to work on mgb's and midgets, now they can REALLY rust can still remember just cutting and cutting rust out a mgb... |
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| Author: | Morris 1100 [ Tue Mar 07, 2006 6:06 pm ] |
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Hey, I have two Morris 1100s that have the original floors and sills! |
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| Author: | The Scotsman [ Tue Mar 07, 2006 6:17 pm ] |
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I had a 1300 VandenPlas, it was so rotten upthe bulkhead that the front end pulled off when we tried to tow it one day, and the sills were rotten and... I hate rust! |
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