Powder Coating Water Pump

[Richard G.]

[Larry E.]

Re: Powder Coating Water Pump

Rick: If you plan on powder coating the W/P your only option is #2. The heat involved will damage the seals
and bearings. This was told to me by several people who do powder coating JMHO--Larry

[Mark E.]

Re: Powder Coating Water Pump

I've had good experience over the years with regular spray paint from a can. The secret to paint longevity is thorough surface preparation and staying below its maximum temperature. The latter isn't a problem for engine paint with the water pump and front of the block.

It will get just as dirty whether powder coated or spray painted. Keep it clean with mild dish soap; avoid chemicals which will damage the finish.

[Domenic T.]

Re: Powder Coating Water Pump

Rick,
The ceramic seal depends on O-rings as part of how it seals. The heat would not let them survive. Taking it apart now can damage the bearings. I think powder coating (which I am a fan of) needs to be done before assembly.

Dom

[Joe L.]

Re: Powder Coating Water Pump

Rick------


I would not even consider powder coating for several reasons:

1) As others have stated, you would have to disassemble the pump before powder coating the body of the pump;

2) You'll never get a paint match, either as to color or as to gloss, with the rest of the engine;

3) A high quality engine paint is going to last as long as you're ever going to need it.

Now, if I had a waterpump apart as I'm wont to do from time-to-time, the only thing that I'd strongly consider powder coating would be a cast iron impeller. Obviously, not for looks, though.

[Richard G.]

Re: Powder Coating Water Pump

Thanks everyone for their input.
I will paint the pump.
I plan on using some epoxy self etching primer first.
And the best Krylon money can buy.
Rick

[Joe L.]

Re: Powder Coating Water Pump

Thanks everyone for their input.
I will paint the pump.
I plan on using some epoxy self etching primer first.
And the best Krylon money can buy.
Rick

Rick------


From an originality standpoint, if you use primer first, it's going to result in a "too thick appearing" finish after the Chevrolet orange finish coat is applied. In addition, you will probably find that after some period of time the orange will flake off in spots, leaving exposed primer. I've been "down this road" once with an oil pan. The better quality engine paints are self-etching and do not require a primer.

[Mark E.]

Re: Powder Coating Water Pump

Ditto: Skip the primer; use quality engine paint.

[Joseph K.]

Re: Powder Coating Water Pump

I would contact a water valve builder that uses epoxy as a coating for valves. You might call a local water plant and they can possible tell you who produces those type of valves and simple ask if they might consider having your casting epoxyed
then rebuild.

[Mark E.]

Re: Powder Coating Water Pump

I would contact a water valve builder that uses epoxy as a coating for valves. You might call a local water plant and they can possible tell you who produces those type of valves and simple ask if they might consider having your casting epoxyed
then rebuild.

What's the advantage of this vs. using engine spray paint?

[Joseph K.]

Re: Powder Coating Water Pump

I don't think that the powdercoating will with stand the water pumps use and you will see some tuberculation in the passages that in time may damage the seals and quicken its failure. I have seen epoxyed valves taken apart after 15 years without any noticable changes in side the valve. Just a thought

[Joseph K.]

Re: Powder Coating Water Pump

I mistakenly thought you wanted to powder coat inside the pump not outside. Sorry