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Cummins L10

crane operator

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Joined
Mar 27, 2009
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8,273
Location
sw missouri
You don't happen to have a picture of the top of the engine and both sides do you? Then we could see the injection pump to determine if its industrial or truck, and what the aftercooling set up is, and high flow or low flow coolant system.

That stinks about the engine, but at least you found the issue in the torque convertor, if you hadn't and just swapped motors, you more than likely would have taken out the next motor also.
 

Truck Shop

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Dec 7, 2015
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WWW.
Unfortunately your probably right the block is toast-Hallback. This same scenario happens when the input shaft breaks on a gear box, it usually breaks at an angle and the broken stub
pushes forward against the pilot bearing loading the crank thrust bearing. Never try to sneak one home if that happens, as soon as you use the clutch the broken stub moves forward
and in no time there goes the crank and block.
 

Hallback

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Aberdeen Wa.
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It is a high-flow internally balanced engine. I ordered one from truck parts in Oompa Loompa Florida. It should be here on Wednesday. It is only the 280 horsepower model but I should be able to swap my injection pump and turbo and gain the other 45 horsepower with some tweaking.
 

funwithfuel

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Mar 7, 2017
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Will county Illinois
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It is a high-flow internally balanced engine. I ordered one from truck parts in Oompa Loompa Florida. It should be here on Wednesday. It is only the 280 horsepower model but I should be able to swap my injection pump and turbo and gain the other 45 horsepower with some tweaking.
And considering it was the crank that failed, no harm to your existing injectors. PT pump should be ok as well. Dont think I'd risk that turbo though. Not without an overhaul. It starved for oil, no telling how long.
What did it come out of? Hope not a Ford. If it's got a lean to it, you really gotta swap a lot more. Good luck.
 

Junkyard

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Claremore, OK
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And considering it was the crank that failed, no harm to your existing injectors. PT pump should be ok as well. Dont think I'd risk that turbo though. Not without an overhaul. It starved for oil, no telling how long.
What did it come out of? Hope not a Ford. If it's got a lean to it, you really gotta swap a lot more. Good luck.

Good point about those funky fords. We have two like that.
 

Hallback

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Aberdeen Wa.
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Gyppo tower logger
When you said about the funny lean I got really nervous but looking at the pallet that it is sitting on it looks to me like it is sitting on their crooked.

https://www.catrucks.com/truck-parts/?vid=1603&unit=1991-cummins-l10-truck-engine

It must have come out of a bus or something with the turbo at the back of the engine but some placement changing and swapping of our old Parts should have it in good shape.
 

funwithfuel

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Mar 7, 2017
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5,518
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Will county Illinois
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Mechanic
By the looks of things, you're gonna be changing front structure, bellhousing, intake manifold and oil pan, if you were looking for an automotive style engine. The air compressor looks like a Bendix tu-flo vs a holset single. The accessory drive looks a bit odd in the pics, could just be all the black paint. If you purchased it as just a core engine to place all your accessories on, cool, I don't think she'll drop right in however.

Had a customer bring me a junk yard take out for a seized M11. It was going into an International 8100, he harvested it from a ford L8000. That's how I became familiar with the woops points. Bellhousing, mounts, etc etc, The one that really got me was the cooling jets, they had a different angle for the leaning tower of power.
 

Junkyard

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By the looks of things, you're gonna be changing front structure, bellhousing, intake manifold and oil pan, if you were looking for an automotive style engine. The air compressor looks like a Bendix tu-flo vs a holset single. The accessory drive looks a bit odd in the pics, could just be all the black paint. If you purchased it as just a core engine to place all your accessories on, cool, I don't think she'll drop right in however.

Had a customer bring me a junk yard take out for a seized M11. It was going into an International 8100, he harvested it from a ford L8000. That's how I became familiar with the woops points. Bellhousing, mounts, etc etc, The one that really got me was the cooling jets, they had a different angle for the leaning tower of power.

Don’t be mixing a Cummins up with a slant 6 mopar! Lol
 

pushbroom

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Joined
Feb 4, 2017
Messages
108
Location
Saskatchewan
I took a look at your s/n 34625140 vs new engine s/n 23534276
Pistons and head are the same.
Injectors, turbo and fuel pump are different.
Cam appears different too. Old is 3037523, New is 3895679.
Old uses a 30' angle of offset key, new uses a straight key.
No idea if that actually matters or not, L10s are a bit before my time. Cant seem to find anything stating what the differences are.
New motor came out of a KOWLOON motor bus. Explains the weird turbo setup. In 1993 it had an injector replaced at cummins in hong kong.
 

mitch504

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Joined
Feb 27, 2010
Messages
5,776
Location
Andrews SC
I took a look at your s/n 34625140 vs new engine s/n 23534276
Pistons and head are the same.
Injectors, turbo and fuel pump are different.
Cam appears different too. Old is 3037523, New is 3895679.
Old uses a 30' angle of offset key, new uses a straight key.
No idea if that actually matters or not, L10s are a bit before my time. Cant seem to find anything stating what the differences are.
New motor came out of a KOWLOON motor bus. Explains the weird turbo setup. In 1993 it had an injector replaced at cummins in hong kong.

Wow!
 

pushbroom

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Joined
Feb 4, 2017
Messages
108
Location
Saskatchewan
Hahahah translated crane operators post for those who cant run google.

Look at chan, someone bought the engine from our scrapped bus and planned to use it! Smile! Wait until he sees how bad it is to smoke!

Damn man... im just sitting here giggling to myself
 

funwithfuel

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Mar 7, 2017
Messages
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Will county Illinois
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Hahahah translated crane operators post for those who cant run google.

Look at chan, someone bought the engine from our scrapped bus and planned to use it! Smile! Wait until he sees how bad it is to smoke!

Damn man... im just sitting here giggling to myself
看看chan,有人从我们报废的公共汽车上买了那台发动机,然后打算用它!笑笑!等到他看到它抽烟有多糟糕!

You guys are mean ;):)o_O
 
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