Keeping machined parts from rusting.

[GAmes]

I just got my newly bored and decked block and slightly shaved head back from the machine shop. Unfortunately, they received the wrong gasket sets and rings, so I am at work stoppage, possibly until next year. What is the best method to keep the newly machined surfaces from rusting? I can coat them with motor assy grease, which I plan to do with the cylinders and crankshaft journals, and cover the flat surfaces with a plastic food wrap, like Saran wrap. Is there a better way? The garage is not heated, so I know when the parts cool there will be a condensation problem, so I have to do something.

 

[The patriot]

Cosmoline? Boeshield?

 

[GHarman]

GAmes, An industrial spray wax coating could be one way to prevent rust.
It is called Jet Lube Rust Inhibitor. Mind ya, this stiff is a wax base and it coats everything! I use it as a parting barrier when using epoxy for bedding rifle receivers.
It is nasty stuff.
GregH
http://www.grainger.com/Grainger/JETLUBE-Corrosion-Inhibitor-26W740

 

[ata]

I've had good luck with WD-40. That's what it was made for and it cleans up easy.

 

[GHarman]

ata, WD-40 works to disperse moisture, but I have found that it evaporates and leaves unprotected surfaces. tt must be renewed every few weeks!
GregH

 

[GAmes]

I don't want nasty stuff, and I'm hesitant to spray anything The overspray might get into the water and oil cavities where I can't get it out. The Boeshield made me think of PB Blaster. Maybe a coat of PB Blaster applied with a cloth?

 

[B.G. Smith]

I use automotive type paste wax on the cast iron table of my saw, it works and is not too messy. bg

 

[GAmes]

Thanks to all that replied. I went with a coat of motor assy grease on the cylinder walls and crankshaft journals, and a coat of PB Blaster covered by saran wrap on the flat surfaces. Then I threw an old bed sheet over them to keep air from circulating too much.

 

[AEdelheit]

Well next time Fluid Film works great for coating metals also and easy clean up!

 

[GAmes]

Well next time Fluid Film works great for coating metals also and easy clean up!

Never heard of it until now. Sounds like good stuff, but a little labor intensive to remove.



Removing Fluid Film

For easy removal of Fluid Film for the purpose of handling or inspection, a high pressure, cold-water pressure wash (1,000 - 3,000psi) is recommended. A standard, industrial strength pressure washer will suffice.



Fluid Film can also be removed by warm water detergent wash or with a commercial-grade biodegradable cleaner. When choosing a cleaner, one formulated to remove tough grease and grime deposits is advised.

 

[JR]

fluid film is an excellent undercoat. Its oil base, and it soaks in like oil does to actually prevent rust from developing, rather than a typical undercoat that only covers it up and still rusts underneath. I got turned onto it by a friend who plows for the state. Theyve been using it on their equip for years with good results.

 

[AEdelheit]

Easy clean up, a can of brake clean, done.

 

[JR]

fluid film is an excellent undercoat. Its oil base, and it soaks in like oil does to actually prevent rust from developing, rather than a typical undercoat that only covers it up and still rusts underneath. I got turned onto it by a friend who plows for the state. Theyve been using it on their equip for years with good results.

 

[jhenderson]

Get the PB Blaster OFF immediately! It is meant to free rusted fasteners and contains a corrosive. It will spoil your machine work, fast. Fluid Film is a great preservative. I use it as an undercoat and also on my snowplow before I store it for the summer.

 

[GAmes]

... ... . contains a corrosive.

Are you sure? On the can it states "does not evaporate, stays on the surface as a lubricant and rust inhibitor" It is made up of aromatic hydrocarbon, petroleum distillates, and surfactant.

 

[JR]

At one time or another PB Blaster listed one of its uses as an air tool conditioner, stated it right on the can. Another one off the top of my head was to spray inside wet distributors. I really dont think its possibly corrosive. I work in a corrosive environment. I can leave my tools untreated for one night without cleaning them, come in the next morning and have rust forming everywhere. I spray them liberally with pb blaster several times a week, keeps them nice and shiny.

 

[GAmes]

That is good to hear. The only place that carries fluid film in my area is closed on the weekends, and will probably be closed Mon and Tue. I needed something sooner than that.

 

[AEdelheit]

That is good to hear. The only place that carries fluid film in my area is closed on the weekends, and will probably be closed Mon and Tue. I needed something sooner than that.

A lot of times Ace hardware will have it, but ya bad time of year to get anything in a hurry, I spent a few days in Killeen but cant really remember what all stores they have there.

 

[ata]

ata, WD-40 works to disperse moisture, but I have found that it evaporates and leaves unprotected surfaces. tt must be renewed every few weeks!

GregH

Yes it's not permanent. Thought he was just going to be set back a short while. I use it on my cast iron table saw and if it starts to turn brown I wipe it and spray it again.

 

[jhenderson]

Everyone I know will not use PB on any fastener they intend to re-use. Too many examples of corrosion transfer to new parts, as well as reasonably good looking fasteners looking worse a few weeks later. Remember, home made compounds such as transmission fluid and acetone will loosen rusted parts, but I wouldn't use it for a preservative.