Just removed mine. First time they've been off the car. Some scale inside. What's the best way to clean? and after, would sloshing POR inside be a good detriment to further rusting? They're not bad enough to replace.
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An old school professional radiator fixer quy told me to put some small stones inside the tanks and to shake a lot. Worked well in removing rust. Still, I´m not certain if the condition of my own tanks is good enough to continue.
yep! put some stones inside... the smaller the better stay away from sand,(unless you have access to an air compressor then put a little sand in it and blow the heck out of it... mini sandblaster effect) and make a video of you doing the cocktail shaker moves 
As for POR15 works great on outside parts, my floor-pans are POR15 done, I would check the ratings for constantly wet hot areas.
As for POR15 works great on outside parts, my floor-pans are POR15 done, I would check the ratings for constantly wet hot areas.
Use muriatic acid to clean out the rust. Then coat it with por15 gas tank sealer. Repaint the outside and you're done.
Mike
Mike
how do you plan to apply?
How about doing the inside of the under car and heater tubes? I was thinking of pulling a "mop" through them
How about doing the inside of the under car and heater tubes? I was thinking of pulling a "mop" through them
Secure a reciprocating saw (sawzall) in your bench vice. Put a handful of rocks inside your coolant tank and then duct tape the coolant tank to the blade of the saw. Turn it on and go inside and watch football.
This works great for shaking paint cans too!
This works great for shaking paint cans too!
Ha. Interesting solutions.
Muriatic acid sounds like the nuclear option. I have cleaned rusted fuel tanks with straight vinagar. In any case a good rinse and baking soda to stop the action.
I have used a product called "Red Coat" to seal fuel tanks. It is like pancake syrup. You have to rotate the part to coat all sides. Cures over night. O'reilly auto parts has it behind the counter , $25 a quart.
I have no idea how Red Coat stands up to hot water but it is an idea.
I do love POR-15 products and they cure from moisture so would not pour any left overs back in the can.
I have used a product called "Red Coat" to seal fuel tanks. It is like pancake syrup. You have to rotate the part to coat all sides. Cures over night. O'reilly auto parts has it behind the counter , $25 a quart.
I have no idea how Red Coat stands up to hot water but it is an idea.
I do love POR-15 products and they cure from moisture so would not pour any left overs back in the can.
I have never heard of POR-15 being used to coat the inside of tanks. I would check the label and/or the manufacturer to verify. I would hate for it to peel off in strips and clog the radiator.
I had a gas tank restored for a old ATV, the inside of that tank was really gross. The guy used a rubberized coating on the inside of the tank, he said it was cured in a oven @400 degrees.
Jeff.
Jeff.
Dear RRS1,
I took the liberty to call POR15 technical line. "Keith" claims that as long as you properly follow the protocol to degrease, prep the surface and apply POR15 that it will be fine. He alleges that this has been done before without problems. I specifically asked if using POR15 in a application where it is immersed in water and coolant 24/7 would be a problem. "Keith" claims: "no problem". Somehow, I am not completely convinced.
Chuck Engles
I took the liberty to call POR15 technical line. "Keith" claims that as long as you properly follow the protocol to degrease, prep the surface and apply POR15 that it will be fine. He alleges that this has been done before without problems. I specifically asked if using POR15 in a application where it is immersed in water and coolant 24/7 would be a problem. "Keith" claims: "no problem". Somehow, I am not completely convinced.
Chuck Engles