getting the sludge out.

[IDIoit]

my old engine i had in the 87 blew a head gasket.

looks like ill be using the lower end in another vehicle for now....

its down to the short block, with the oil cooler off.

whats the best way to clean up the short block without tearing it apart??

im sure all of the oil journals are full with less than desirable viscosity.

shes gonna live life as a N/A engine for a while....

how would you go about cleaning it?
or would you just slap it together and do frequent oil changes?

 

[Waystro]

The machine shop I'm going to use was saying they could clean the insides
Some kind of hot pressure cleaning.
Are you could run a couple bottles of autoRX through it.

 

[icanfixall]

Auto RX after its running will clean it SAFELY. Maybe some atf mixed into the oil change. Say 2 or 3 quarts. Way back when oil was non detergent I heard of a guy that drained his oil. Refilled with Kerosene and idled the engine for a few minutes. Then drained the Kerosene and refilled with oil. Never had any problems so I was told. Really not sure running diesel for oil might hurt things and really would not do this myself. Just relaying what I was told. I worked pumping gas at a Shell station for a few years out of high school. Had a guy wanting an oil change but he wanted us to drain the oil. Start the engine to "get the oil out of the oil pump and engine oil galleys". He was paying and we did what the customer wanted but advised not doing this. That was 1970 and their was respect for people and customers.

 

[riotwarrior]

Steam it then oil spray

 

[TahoeTom]

You could put it together, then run it with some Auto-Rx to clean the internals. I know it sounds like snake oil, too good to be true, etc. I have no association with the company, but I did run a cycle of it in my original 6.9. It seemed to reduce oil consumption. I never took before/after pictures or tore it down. It is expensive stuff. Just a thought.
http://www.auto-rx.com/

 

[79jasper]

Yeah, it's more time, but I'd say tear it on down and have it cleaned.

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[FoolhardyIDI]

The way I clean out and old engine that I think might have gummed up insides. Go out and run the engine until up to operating temp. Add a half gallon of diesel fuel to the oil let it idle for 5-10 min and then change the oil out. Add new oil and new filter and off I go.

 

[Clb]

Gutted/stripped to a shortblock' I might tryfilling the pan with a solvent of your choice,,, pump the thing with the starter (on and off. Keep the starter happy) till it flows clean... Then let it soak... Pump again see above^^^^^^^^^^^^^^^^^^^! Again and again. Your gunna need a BIG *** drip pan.
I don't think there is a way to prime the oil pump like a gasser.

Or rig up a siphon device to push solvent into the oil galley????

Not a bit of endorsment as I've never tried this, cept on a lawn mower that went under back in the last big flood here.


If you dislodge a chunck of carbon it wont be purty.
I dunno

 

[Koch13351]

Any residual water in the oil system will be turned to steam and become one with the crank vapors once you get that engine fully warmed up. I wouldn't worry so much about cleaning it if you're in a hurry to get it back together. And at most, just wipe the mains clean with a CLEAN microfiber towel and add some assembly lube and reassemble. When first firing it up again, remove a valve cover, unplug fuel solenoid and crank the engine over until clean oil makes it to the head. Put it back together and light her off and let heat do the rest.

 

[jhenegh]

I had a Deere 2020 that shucked the front pump seal twice while I owned it so it filled it's crankcase full with diesel twice in 3 years. You wanna talk about a clean oil sample AFTER all that diesel flush... It was about 5 gallons of diesel fuel each time it happened when I drained it out. It must've cleaned out everything! Not sure I'd purposely go that heavy on the oil:diesel ratio but I wouldn't be afraid to do some 50:50 idling and a few filters later drain it out and call it good.

 

[79jasper]

I've done a few different things. Diesel, atf, mmo, engine flush...
Was on a pretty gummed up chevy 4.3. Drove it with that mixture of mmo and atf (don't think I had any diesel in that one) for about 500 miles. Stuff that came out was pretty dark. Didn't see any chunks.
The following oil change looked pretty good.

Watched a in law do diesel in a Saturn. Thing smoked like crazy afterwards. Lol

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[laserjock]

Can you flush it from the oil cooler ports? I'm not sure where the pump is in the circuit.

 

[79jasper]

That would probably work.
Had a diagram showing the oil flow. Of course, can't find it now. I think towcat or oldbull has it also.

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[junk]

Guy at the Coop I worked at would put a gallon of diesel in his old ford 360 and idle it for like 5-10 minutes. Then drain it and do an oil change. He said they did it in the service all the time. IDK, but might be worth it.

I'd be more worried about water sitting in there right now pitting things. I tried out RX one time in a 4.3 chevy. I'm not sure I'd use it again. But that engine was bad.

 

[Koch13351]

I'd be more worried about water sitting in there right now pitting things.

Yeah I wouldn't let the engine sit too long with water in it. Then the machine shop bill would start getting pricy with having to get the crank turned and getting new main and rod bearings.