Case 680E

[propane1]

Don’t bother me any Eugen. It’s all interesting to me. And doesn’t matter what size tractor it is or what the topic is. Sure some post I find more interesting than others. But we are all like that. Posting something keeps the site going, the way I see it.
Have a good day gentlemen.


Noel

[JSinMO]

Well that certainly is an unpleasant thing to find in your engine. I’d be scared to know how long the previous owner ran it like that.

I’ve never tried to run on three cylinders before, but if you rerouted the fuel line as stated what would happen if you squirted some oil into that cylinder to give the top end some lubrication when you run it?
I don’t know if it would make any difference at this point.

[propane1]

Great post JSinMO. I was thinking the same thing.

One thing is for sure, you don’t want that piston to seize and break the rod or what ever. Maybe run a line from the cylinder to the cab and have an squirt can of oil, and put a few drops of oil in every now and then.

But, there are vehicles on the road today that shut off cylinders when cruising. Don’t really know how they lube those when not firing. Maybe they don’t have too. ?

Noel

[Spike188]

Model A and T Ford flat heads could be run on 2 cylinders using the other 2 cylinders as air compressors.

https://www.jalopyjournal.com/forum/thr ... r.1014976/

Uncles talked about it but I have never seen one.

I suspect that the 680E will have enough blow by to keep the cylinder lubed. You will know how much blow by happens as soon as you start the engine.

[Eugen]

Guys, I've been thinking about what you all said. Considering that this engine has been running like this for a while, and worse, with tons of diesel thinning the engine oil too, it'll probably be fine for a little while yet, 'til I dig a few more holes. I don't think the piston needs detonation to get lubed. In fact there's so much oil pushed up in the valve cover and up the breather tube, I'd be surprised if this piston isn't constantly drenched in oil.

I'll be more careful about reving the engine, which I had done a few times when the stump was stubborn. It'd be nice to find a way to stop injecting diesel into this cylinder.

The compression on the other ones was:
cylinder 3 dry: 250 psi
cylinder 3 wet: 360 psi
cylinder 4 dry: 300 psi
cylinder 2 dry: 290 psi


@Spike188 that's really cool, never heard of that, but it why not? For a compressor the imbalance on the crankshaft may not matter as much, it doesn't need to run at really high rpm.

[propane1]

Farmall tractors had a kit to use one cylinder as a air compressor.


Noel

[MattA]

@eugene Keep at it and you will have a great backhoe when your done

[Spike188]

@Eugen let me offer a word of caution about parts for Case tractors listed on the internet. In 2020 we pulled the G188 engine out of 630 Case after seeing complete Piston, rings, and gasket sets advertised in multiple places on the internet. When the pistons were removed and inspected they were found to be wore out. 0.100" slap in the upper ring glove and the OD was very undersized. The first two orders were place for parts with a return response of "parts no longer available". It turns out that the parts had been out of production for 10 years. The tractor had huge sentimental value to family and one of the great grandsons took on the task of following up leads from Bill Eshelman. A farmer in New York State found and supplied oversize rings, valves, guides, and gaskets. In spite of the pistons fitting the cylinders like a quart jar in a gallon jug we put as many new parts into the overhaul as could be found.

The moral of the story is do not believe everything advertised as available, place and order or call to confirm.

[JSinMO]

John Saeli may be able to help you with parts. He is in New York state and deals only in Case parts. I’ve done business with him a couple of time now on my 830 and he has been very helpful. It’s just him and his wife running the business. I think he deals mostly with the older ag tractors, but he may be able to help you or know who can get good parts for an industrial model.

https://www.saeliimplement.com/product- ... s-gaskets/
His number is listed on his website.

[Spike188]

@JSinMO John Saeli is who bailed us out on the 630 Case. I spent a long time visiting with his wife while he was planting wheat.