Cat E70 engine

[davida]

Has anyone worked on a Cat E70 excavator with a Mitsubishi 4D31 engine?

I have one that my brother in-law left the clamp on the air intake hose loose on the intake manifold. Ended up with an engine full of fine sand.

Now I need to find an engine I can install into this machine, probably have to have a flywheel modified to accept the lugs to turn the pump.

Anyone ever put a different engine into one of these gray market machines? If so what engine did you use.

Thank you for any help.
 

[MSM]

Rebuild the one you have..kit for it is $700 give or take. Alot easier and cheaper than adapting something else into it
 

[davida]

If I did not need a crankshaft, rod, pistons and everything else.

I have priced the parts and it comes up to over $5000.00 for just the parts.
 

[AJ.]

Two E70 been dismantled on Machinery Trader at the link below,one in IL and the other in TN,there is a 4D31 on Diesel Engine Trader in the UK, dieselenginetrader.com probably too far away.
AJ
Machinery Trader

 

[2x4]

seems to me I remember a story that the same engine was used in a small foreign pickup. Mitsubishi made vehicles for Dodge in late 70's. Diesel, of course.
 

[NCWayne]

Looks like the Mistubishi FE444 truck shares the same engine. Click on the link below to see one on the Truck Trader. The whole truck is only $4500 which would be alot less than the cost of the machine your working on. That being said if I don't doubt that the parts for that engine are through the roof if you go to CAT to get them. Thing is with it being a common truck engine the parts ought to be available from plenty of aftermarket suppliers for ALOT less money. That said why are you saying you need a new crank, etc? I ask because I have seen some worn out engines in my day but never one that needed a new crank, rods, etc that hadn't spun a bearing, thrown a rod, etc. In all but the most extreem cases the crank can be ground, the rods reconditioned with new wrist pin bushings, etc. Even with all that work I typically price a rebuild at somewhere between $1500 and $2000 per cylinder, and that's with machine shop charges, and my laobr to take it out, do the rebuild, and reinstall it and get the machine running. In other words if you did everything but the machine shop work yourself, bought aftermarket parts, etc you ought to be able to get away with rebuilding for somewhere in the $4000 range, if that. Good luck.
Click here

 

[davida]

The engine was ran to the point of locking up. Apparently when it cooled back down my relative cranked it up again to get it back to the house.

By the time I knew something was wrong all 4 rod and all 5 main bearings had spun.

One rod end and one rod journal are almost black from the heat. This rod bearing was found in the small pieces when I pulled the oil pan off.

I have not pulled the head off to look at the upper end but from the fine sand that was coating the entire intake manifold and the find sand I found in the oil passages going to the main bearings I don't think I want to reuse any part of the engine except the block head and valve train.

Going off the block numbers I best price I have found on parts are out of Australia where these are more plentiful. I do know the pistons and injectors and the pump are different in a truck engine and a excavator but I would not hesitate to put a truck engine in it if I can find one at a good price.
 

[Welding man]

Have the crank reground and the rods reconditioned. Should be around 500 Bucks
 

[jm.]

You could use an automotive block But you need to use your fuel system and governors. Total different fuel system on the automotive but as WAYNE says no way can you Gerry rig or change engines as cheap as you can build the right engine. You just can not imagine the problems the crop up on engine changes. Making it fit is minor it si all the things like exaust, fuel, water, and controls that take time.