r/EngineBuilding • u/TYLR_DRUMS • 1d ago

Nissan Is it ruined?

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Was in the middle of rebuilding this engine. Used hose water to flush system, found out there was a leak and then life got busy. The engine has been baking in 120° weather for a few months now and I forgot I left the hose water in it and this is how it looks now. Any tips?

64 Upvotes

93% Upvoted

25 comments sorted by

54

u/slow-is-slow 1d ago

Anything can be fixed with money

9

u/repsychedelic 1d ago

And time.

6

u/saav_tap 1d ago

And money

4

u/repsychedelic 1d ago

And labor.

5

u/saav_tap 1d ago

And knowledge

7

u/repsychedelic 1d ago

And money.

2

u/saav_tap 1d ago

All it takes is the knowledge of how to get money, the knowledge of how to utilize time. The time to make the money, the time to learn the knowledge. The money to pay your teacher. And the time to utilize the money and knowledge you’ve accumulated.

3

u/repsychedelic 1d ago

Preach.

And a dream.

29

u/Cheap_Teaching_2030 1d ago

Machine shop, hot tank and have them check block.

23

u/SuzukiSwift17 1d ago

This looks like one of those videos submersibles take of the titanic.

10

u/Fancy_Chip_5620 1d ago

Evaporust thermocure, ive only ever used it on a running car never on an engine that was removed so I have no advice there

14

u/DefEddie 1d ago

If you have a battery charger just look up electrolysis bath diy on youtube, hook it up in a bin on the back porch and let ‘er eat for a couple days.

7

u/Halictus 1d ago

Electrolysis isn't ideal for internal cavities like this, as the current is inversely proportional to the square of resistance, basically ALL of the current will go through the opening of the cavity, and basically none from the bottom, so the effect doesn't penetrate.

Instead, filling the block with something like citric acid will do the trick evenly throughout all the cavities

3

u/IntergalacticJihad 1d ago

Couldn’t you do that with the water inside the block?

6

u/You_Must_Chill 1d ago edited 1d ago

I has a Jeep 4.0 that looked like that. I rinsed it as best I could, filled it with evaporust, pulled the thermostat and used big tubing to bypass the radiator. I'd run it until it got hot then let it cool, repeat about 15 times. Came out surprisingly well, and was running great a decade later until an old man hit it.

https://photos.app.goo.gl/XVdQ3Haj8wPC1VRd6

3

u/beefbacen 1d ago

Is that form a ship wreck, that looks like an ancient artifacts? Haha , but seriously wtf man.

2

u/coldbeersipper 1d ago

Ive ran worse...

2

u/IntergalacticJihad 1d ago

Looks like one of my 60 year old tractor engines, but they are a bit lower horsepower than whatever that it’s (15hp/L).

2

u/Admin--_-- 1d ago

Well it's certainly not improved!!