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Oliver, Cletrac, Co-op & Cockshutt Tractors Discussion Forum
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Re: oliver 80

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oliver90owner

06-07-2013 01:22:01
195.93.21.73



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As far as I know, the gas ones were the smaller pistons and the KD versions the larger. High altitude versions may have been fitted with the larger pistons, too.

There may be a difference in head height for the different compression ratios, so push rods may be different length (valves will be). Manifolds for the KD are deeper, too, but not much use for the above, necessarily.

But all that said, the liners and pistons could have been changed at some point - although less likely on these older tractors, I would have thought.

You could compare the parts book item numbers for each model.

The alternative to pulling the pan would be to remove the head! Or you might be able to get a measurement through the crankcase inspection covers.

RAB

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RWT

06-07-2013 12:20:01
50.103.141.83



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 Re: oliver 80 in reply to oliver90owner, 06-07-2013 01:22:01  
I am working on an 80 motor for someone.

I pulled down one motor and although it was marked KD it had been converted. It had 3 flat top 4.5" pistons marked C228C. Those are not in the parts book I have. He found a 4.5" flat top piston that they said was M&W but the marking doesn't say that directly. This piston is significantly heavier than the 228C pistons so much so I am working on balancing them.

It also had one flat top 4.25" piston marked C228F (gas piston). The head showed it had probably dropped a valve and I am guessing 228C pistons weren't available.

The other motor was a KD motor with 4.5" cupped pistons marked C228E.

The chamber size on the gas and KD heads is different. KD is supposed to be 4.5 compression ratio and gas 5.5. I don't have everything back yet but i have estimated the 4.5" bore (flat) with the gas head at 6.2. I think I estimated the gas head with KD piston at around 5.8 but I am a little fuzzy on that.

The Oliver markings are cast into the inner base of the pistons and could probably be viewed through the inspection covers. (You might have to clean some crude off.....)

RT (I think I caught all my typos.)

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J. Schwiebert

06-07-2013 18:15:00
209.143.33.147



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 Re: oliver 80 in reply to RWT, 06-07-2013 12:20:01  
According to my Older 80 parts book the 228-C pistons were "high altitude" pistons. It also stated they were seldom ordered. I would like to get some measurements from you while you have the engine(s) apart. How can I contact you? Thanks J.



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RWT

06-07-2013 20:34:15
50.103.141.83



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 Re: oliver 80 in reply to J. Schwiebert, 06-07-2013 18:15:00  
I guess email is about the best way. It should be open when I post this. If not I will try something else.

I won't be able to get you anything until next week but what do you need?

I didn't find them in the Floyd county copy.

RT



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J. Schwiebert

06-08-2013 09:53:14
209.143.33.147



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 Re: oliver 80 in reply to RWT, 06-07-2013 20:34:15  
It did not show up. Guess it is time for plan B.



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RWT

06-08-2013 19:47:32
50.103.141.83



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 Re: oliver 80 in reply to J. Schwiebert, 06-08-2013 09:53:14  
I guess you used modern view because it did on classic.

That said, and I think this keep the spammers out.

cgrwt(AT)hotmail(DOT)com

I am at 618-262-5402. If you do that call in the morning and let it ring but I can't guarantee an answer. I am in central daylight saving time.



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duane o.

06-08-2013 11:49:38
174.3.42.95



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 Re: oliver 80 in reply to J. Schwiebert, 06-08-2013 09:53:14  
Hey john i emailed you those pics of the super 99 hydraulic system hope you recieved them.duane.



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