Protecting a bare block

[qmdv]

Just had a block hot tanked and magnafluxed. I will be storing it for some time until a new engine is required. What is a good protector for the machined surfaces to prevent rust. It is a nice 59AB no cracks

[Seth Swoboda]

cosmoline. I recently picked up a NOS crankshaft coated in cosmoline. It was hard as a rock but when we removed the cosmoline, the crank was in like new condition. You can still buy cosmoline grease. Military Spec too.

[qmdv]

Found some cosmoling in a spray can. Or it can be had in a quart can and you have to smear it my hand. They also have cosmoline remover in a gallon jug. There is a 4 to 1 ratio there. I remember it being pretty goey

[marko39]

Originally Posted by qmdv

Just had a block hot tanked and magnafluxed. I will be storing it for some time until a new engine is required. What is a good protector for the machined surfaces to prevent rust. It is a nice 59AB no cracks

I have a 8ba block that was stripped 20 years ago and just smear grease in the bores. The rest spray with any spray oil to stop the rust. You don't need anything that will be a lot of work to remove it.

[jimTN]

If you grease it in the bores, be sure to grease the bearing areas. I just had a block bored at the machine shop and the sprayed it with wd40. I have another block they cleaned last year and it shows no rust anywhere yet. My machine shop uses some sort of chemicals instead of the old hot tank and it does not mess up bearings.

[Seth Swoboda]

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I figured if you just have the block hot tanked and magnafluxed, even if you used cosmoline, your machine shop will have to clean the block further and machine it. So clean up would be as easy as baking it and shot peening the block.

[Krylon32]

I had one I coated with Gibbs. Lasted a long time until I needed the block.

[Ronnie]

https://www.fluid-film.com/


R

[Ggmac]

If it's clean use spray paint , let it set a few days then use spray cosmoline or corrosion stop spray . I live in south Florida and without the paint you'll find rust spots where touched , scratched or almost any bug droppings have been

[rotorwrench]

LPS 3 is a good spray and is relatively easy to get back off when your ready. It goes on thick and can be sprayed anywhere on or in the engine. Par-al-keytone or cosmoline are so thick that it's hard to get back off when you need to paint. A good coat of grease will last quite a while but the soap hardens and cracks after all the oil separates from it so it's only good for a few years.

[deuce_roadster]

I too like the LPS3 product. I put it on flywheels and clutch covers that have been on a rotary surface grinder. Lasts years. More like a wax then grease and as rotor said, it is easy to remove.

[cas3]

i like lps too. most farm tractor dealers sell a spray on waxy kinda stuff for spraying on plows etc, during the off season to prevent rust. lasts a looooong time

[Bored&Stroked]

Gibbs . . . I use it on lots of things - amazing how well it prevents rust!