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68Gold/white · 06-29-2022, 05:42 PM

I see a lot of folks use white vinegar to deal with rust. I have not tried it.
I'd get some sandpaper and scotchbrite to remove most of the rust in the cylinders, then maybe some vinegar to work on the rust between the cylinders and pistons.

I know nothing about 292's...I am curious of the pistons will come out the bottom???
If so, that would help. There's many penatrant formulas folks use. Auto trans fluid has worked well for me, some add diesel to it, I think that would help. Let it sit for several days.

06-29-2022, 05:42 PM	#10
68Gold/white Registered User Join Date: Sep 2011 Location: Ark City, Kansas Posts: 3,305	Re: 1967 GMC K20 " The Kodiak" I see a lot of folks use white vinegar to deal with rust. I have not tried it. I'd get some sandpaper and scotchbrite to remove most of the rust in the cylinders, then maybe some vinegar to work on the rust between the cylinders and pistons. I know nothing about 292's...I am curious of the pistons will come out the bottom??? If so, that would help. There's many penatrant formulas folks use. Auto trans fluid has worked well for me, some add diesel to it, I think that would help. Let it sit for several days.