I have this Lq4 block that i had hot tanked twice. The first time was done after all the parts were off. Then like the idiot that I am i let it sit in the garage by the door and rain hit the block and a lot of surface rust appeared. Then i took it back to clean that mess and had it honed and put bearings in it and it was covered with a black plastic bag but it was riding in the back of my Av for awhile and it collected moisture and crap and to my surprise again the rust came back but now the honed cylinders have it. Anyone have a few god ideas for me? The pics are attached for your pleasure!!!
Thanks
CBODYAV

 

Nothing bad really. I'd just get a can of rust penetrating spray lube and a brush and knock it off and flush it out.

 

WD40 that biatch.

 

You can try Ospho* a phosphoric acid treatment which converts the surface rust into iron. Spray on leave on, it also acts well as primer for paint if you decide to do that.

 

Definetly going to take a little elbow grease! All of the previoous recommendations should work nicely. Good luck!

 

you need to keep the engine out of the elements...the garage should be fine, just keep it away from moisture

spray it down with a rust removing chemical and inspect it. I would spray something like WD-40 on it, it leaves a residue that will resist moisture.

 

Best storing spray I've ever used...

EDIT

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The product is from CRC and is called "Engine Stor"

 

If you're not going to work on it right away, you should always give it a coating of tranny fluid - this keeps the rust off. I had one stored for six years before selling it, no problem.

 

Thanks to everyone for their input.

CBODYAV

 

I agree with Blownchevy use WD40. When I was rebuilding my 454 in my camaro I used about 1 gallon of WD40 (WD40 comes in a gallon can) when I was storing just the block.