Rust deposits behind oil cooler - advice

Vagabondrobb · Apr 4, 2020

“New” engine arrived yesterday and found this - thick layer of rusty deposits.

It was actually worse than this - I made a brief attempt to remove a little of it. My guess is previous owner used water to instead of coolant, but the pictures of the engine I looked at before I purchased didn’t show anything to this extent (see at end of post).

Could this have built while engine was in storage? And more importantly, can this be remedied or should I be thinking about returning engine?

Cheers guys.

Picture as advertised (it is almost certainly the same engine)

Ratae · Apr 4, 2020

It's the amount of rust scale hiding in the rest of the engine that would be the concern.
IMO that's been going on for a while & suggests a lack of antifreeze/inhibitor in proper proportions

RangeRoller dt · Apr 4, 2020

Stick a hose pipe on there see what comes out and where

Vagabondrobb · Apr 5, 2020

RangeRoller dt said:
Stick a hose pipe on there see what comes out and where

Water comes out clear funnily enough, but I think whatever’s inside has hardened. I’ve ordered some engine descaler to soak in for a few days. Annoying as I was ready to drop the engine in today!

Vagabondrobb · Apr 5, 2020

If I stick the hose in at the top water comes out of the three holes where the oil cooler sits

RangeRoller dt · Apr 5, 2020

If it flows and doesn’t leak anywhere unexpected should be good to go.

I’d try get out what you can with chemicals, keep an eye on the coolant colour for bit when engines in

Rust deposits behind oil cooler - advice

Vagabondrobb

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Ratae

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RangeRoller dt

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Vagabondrobb

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Vagabondrobb

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RangeRoller dt

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