I'm in the process of trying to replace my leaky old Oberdorfer water pump on my late model, raw water cooled, A4. The aft portion of the block has been shedding LOTS of rust onto the bottom of the engine compartment for years. I was using a screwdriver to scrape away piles of rust surrounding the bottom bolt of the pump, and larger pieces of metal started coming off. I was able to pull off several clumps of metal under the pump by hand. It is soft, wet, and spongy. It seems to be a mounting flange, but the engine mounts are several inches below. I pulled out a piece 2.5 inches long, and I can crumble it in my hand.
I'm attaching photos. Is this engine block fatally rusted out? Assuming I can get the last pump bolt out and replace the pump with my newly-purchased MMI pump, can I trust this engine block? By the way, except for the leaky pump, it runs GREAT!
Phil
A Worried man.
I'm attaching photos. Is this engine block fatally rusted out? Assuming I can get the last pump bolt out and replace the pump with my newly-purchased MMI pump, can I trust this engine block? By the way, except for the leaky pump, it runs GREAT!
Phil
A Worried man.
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