What can and cannot be coated?
I want to powdercoat my water pump and such, but don't know if it would **** it up. Can i partially disassemble the waterpump to coat it?

 

why would you want to waste 80-100$ on powder coating a part that usually needs replacing?

People usually powder coat things that they new will keep or wont fail.. like an intake manifold or sway bars ect.

Well once they spray on the powder, they bake it in an industrial oven at 300-350* so if the bearings can withstand that heat, then you should be ok.. Just make sure you cover or plug any threaded hole.

 

Just paint it or buy one that is powdercoated. Besides bare metal would cool better than powdercoat correct?

 

my current one is rusty as all hell. I dont like rust. at all... and water pumps are not replaced all that often so its not like its not a complete waste.

 

do I absolutely have to sand blast something before I powdercoat it?

 

Just paint it instead

 

i mean for other stuff like cylinder heads

 

you want to powdercoat cylinder heads ??? never heard of it being done . but , lots of things i have never heard of . good luck .

 

just the cast iron stock ones so they look pretty and I can sell them for more :P

 

I don't believe powdercoating would hold up to the extreme temperatures of cylinder heads, but I could be wrong.

 

Parts need to be cleaned (sand blast is the best way) before they can be powdercoated.

Try spray engine enamel instead.

 

I've seen powdercoated engines...

 

The cleaner the part the better... blast away! The gun is a positive charge and the peace your working on is negative the particles cling to it but you also have to make sure you wash them good get off all the contaminants and blasting residue and if you really want to get some good adhesion then chemically etch but for most home hobbyist just a good blast, wash and coat is all you need... If your doing the coating your self who gives a crap what your coating as long as you use common sense like taping off bearing races and plunging threaded ends etc... and as far as heads and engines go with powder coating, powder coating in general mostly consist of using plastic powders... looks good for awhile but doesn't seem to last and iv never heard of anyone doing a true ceramic coating to a block since the amount of heat needed would most likely cause distortion...

 

I read somewhere that over time it just looks better because of how hot the engine gets.

 

Yes you can powder coat a water pump. Yes you can powdercoat heads and engine block. Been there done that. Esp. motorcycle stuff. Cylinder jugs , case, trannys, etc..