Hey guys, I'm rebuilding the waterpumps on my 337 Lincoln right now and I've blasted the housings so I'm wondering what I could use to coat the insides to help protect against corrosion. I was thinking about using a thin coat of POR-15. Any reasons why this wouldn't work or be a good idea????
I think por-15 makes an engine paint, but from my experience with regular por-15 it peels right off clean metal.
Gotta read the can, the instructions are right there. Por 15 loves blasted metal, you just need to prep it with what they tell you how they tell you. The tech sheet is on the can. Inside water pump should be safe from corrosion if it is running coolant/antifreeze - the inhibitors are in there.
Yep, it loves lightly rusted and blasted steel. I just figured it'd be an extra means of protection. I'm going to try it unless someone pops in here and has experience with it inside the engine.
Well lol! Funny you should say that cause I went to long lengths to find some rebuildable cores so I guess I am going a little overkill on it.
I would look into Glyptal - you can get it from Eastwood. designed for oil drian back but it seals metal and is salt and corrosion resistant.
I Glyptal'ed the block/valve covers/etc. POR-15 has a temperature resistance to 600 degrees so I'm thinking it will work.
Glyptal is used to insulate electrical connections. You can find it at a lot of places that sell industrial stuff, WW Grainger, electrical supply depots.
Use anti freeze, and change the anti freeze every few years, and don't bother with any coatings. There's a lot to be said for maintenance.
This. By the time any corrosion starts to affect the pump structurally, the bearings/seals will be shot.
Use good antifreeze and don't worry. The antifreeze you get today is way better than the old stuff from before the 80s. Today you can take apart a 20 year old aluminum motor and the water pump and coolant passages are like new.
Glyptal Has been used by the best engine builders in the country for coating the entire interior casting surface, pans and covers of race engines for many years. it not only helps with heat dissipation but helps return oil to the pan quicker. BUCKD
Call the folks at KBS. They will be glad to help. Glyptal is old technology. It still has a use, but there are better products out there. As I understand it, KBS is headed by the guy who developed POR. They supposedly do not cut corners at KBS. I am very happy with their products. I have had POR peel off prematurely, but have never had a problem with KBS. They have a solution for almost anything.
If it peels off it will make a mess that will never clean up. Look into a product called "No Roison". Would a thermal coating like is used on headers work?
Anti freeze will take care of the corrosion. It is now for year round use. When the pumps were originally installed, I'm sure they saw straight water in the summer, hence the rust.
Use antifreeze, besides taking care of your rust problem, (I want to see you paint the inside of the water jacket) it is what lubricates the pump. Glyptal was developed as an electric motor varnish, it does stick to the inside of an engine block well, but does it really do anything in there. Yes, the oil slides off quicker, but is that 1/2 cup of extra oil on your block walls cause any harm?
A point a lot of you missed is the cavation/water circulation that the pump will make will act like a sandblaster and pull most coating right off, clogging the system. Just use anti freeze and it will be fine.
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