650 diesel

Matt Thomas · Feb 11, 2015

How common were 650 diesels? Just don't see many around. Dad bought one when I was in my early teens...45 years ago. Used it quite a bit and I recall the power steering being the only troublesome part....would get air locked.
I know some had issues with air getting in the water jacket and causing hot spots in the head but we never had that issue. Still have the tractor but it has been sitting a VERY VERY long time. Other things have kept my attention off of it. I am sure it would be locked up.

DeltaRed · Feb 11, 2015

According to TractorData there were 4933 650 tractors produced.Didn't say how many were gas or diesel.I would think at least 90% were diesel

Red Mercury · Feb 11, 2015

(quoted from post at 16:42:39 02/11/15) How common were 650 diesels?

That's a hard question to answer. Like DeltaRed stated there were not very many of them made so they are rare, but the diesels are not difficult to find if you are located in the right area. Most collectors tend to collect tractors that they grew up with and most grew up on a Farmall. So there are less 650's out there, but there are less people collecting them as well. Warning: repairing a gas start diesel engine can leave a huge crater in your bank account. Parts are becoming increasingly difficult to find.

Regarding the problems with cracked cylinder heads, yes it was a common problem. There are many different theories about what caused the cracks. The most commonly supported way to avoid cracking was to allow the engine to warm up for a long time before putting it to work and allow it to cool down afterwards (10-15 minutes both ways). Also, ensure the cooling system is well maintained, keep it full of good coolant, and never overheat the engine.

rustred · Feb 13, 2015

they are not classed as rare at all. there is probably around 12,000 of those made. and the same engine is used from the super wd9, 600 and to the 650. the w-14 was ih's rarest tractor with only about 1100, I believe without looking it up.

Red Mercury · Feb 13, 2015

(quoted from post at 03:21:11 02/14/15) they are not classed as rare at all. there is probably around 12,000 of those made. and the same engine is used from the super wd9, 600 and to the 650. the w-14 was ih's rarest tractor with only about 1100, I believe without looking it up.

As indicated by DeltaRed's post there were 4933 650's made. At the other end of the spectrum there were 390317 Farmall H's produced. It is correct that the 650 shares the same engine with the Super WD-9 and 600 but I do not understand your point. If you consider that a reasonable percentage of the 650's produced have been scrapped by now and many of the remaining ones are in the hands of collectors then there are not very many left that are available. I guess it gets down to one's interpretation of rare. Because 650 diesels can still be found for sale from time to time and they are only sought after by a few collectors, being rare is difficult to quantify. There used to be quite a few 650 diesels in my area (Central Canada), now most have been sold to collectors. They are becoming increasingly difficult to find in this area as the years pass. Rare and valuable are often two different things and the market value of a truly rare tractor is certainly affected by the production numbers. A W-14, 600G, W6TA diesel, and WR-9S are all tractors that are rare and command high prices.

Dugger · Feb 15, 2015

(quoted from post at 08:42:39 02/11/15) How common were 650 diesels? Just don't see many around. Dad bought one when I was in my early teens...45 years ago. Used it quite a bit and I recall the power steering being the only troublesome part....would get air locked.
I know some had issues with air getting in the water jacket and causing hot spots in the head but we never had that issue. Still have the tractor but it has been sitting a VERY VERY long time. Other things have kept my attention off of it. I am sure it would be locked up.

650 diesel

Matt Thomas

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DeltaRed

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Red Mercury

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rustred

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Red Mercury

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Dugger

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