Quote:
Originally Posted by patman
What probably happened is that the rodent urine did the bulk of the damage.
If you want to go industrial strength, skip the marvel, and use CLR, household vinegar, Oxalic Acid, or molasses. Give it a good soak then try to turn it over. Beware though, these will clean it down to the bare metal, which means it'll flash rust in no time flat unless you get some oil or something on it to protect it.
Example from another site, 12 days in molasses.
Before...
...and after:
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Wow! I never heard of using molasses and I am kind of a gearhead.
To the OP, if you are doing a quicky motor job you need to make sure that all of the lower end (rods, caps etc) need to go back exactly as they came out. That means conn rod in the same cylinder, same cap in same direction because all of these components have already worn in together. If not you will put the entire thing back together, torque everything and it won't turn over.