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West Middletown | Looking for a decent Corn Head for my 6620 Titan II Combine.
Some say better off with smaller head to keep ground speed up, others say the more rows the merry'are.
Also, the age old question.............................HI Tin or low Tin? |
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| I prefer slower ground speed, gives head more time to do its job. 643 will be tight, especially mud or down corn. Around here most of the 6620s had 6rn on them . |
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Fulton County Ohio | Tire size and width of machine? Row length and yield? Do you work alone? Do you like driving 1.3 mph in good corn? I assume the 4 row covers your tread and you don't want to dump four times in a half mile round. Go with a 4 row. Match your planter or multiples of corn head to planter width. |
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Lincoln County. NC | You need small drive tires and flat land for a 443 to work. A 444 is close enough. 643 is a good match. |
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Southern NJ | 643 low tin is my recommendation. I don't think I have ever seen a 443 on a 6620, and I'm from small combine territory. |
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Alton, Ia | 1800swath - 6/27/2018 10:10
Tire size and width of machine? Row length and yield? Do you work alone? Do you like driving 1.3 mph in good corn? I assume the 4 row covers your tread and you don't want to dump four times in a half mile round. Go with a 4 row. Match your planter or multiples of corn head to planter width.
175 bu tank IIRC on a 6620, at least ours did.
4 x 150 bu before dumping let's say = 600 bu.
643 = 6 x 2.5' x 5200'/43560 = 1.8 acres.
600 bu/1.8 = 333 bpa.
Wowza, no wonder corn is down to $3. 193 bpa was our tipping point, below that I could get thru a 1/2 mile pass, above that we had to dump part way. As annoying as that was, it was a good problem to have.
OP: I wouldn't even attempt a 4 RN head on a 6620 machine, years ago we had a 4 x 36" head on ours and it was tight sometimes with that. Really had to watch terrace sides and contours. Go 6.
Edited by Oliver1 6/27/2018 11:36
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South cental Ohio | mostly what the others said about tire size and fields and desired speed. We've had 2 6620's at the same time.... one with a 6 row and one with a 4 row. I liked the 4 row better because I could go farther between dumps ( make it to the end of a field without a cart) and the fact that in good corn the 6 row head was plenty on a 6620. In good corn you have to watch the rear end so the corn doesn't go out the back. |
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| Depends on types of fields you have, if you have help at harvest, also do you have to road travel on busy highways much, also what size planter are you using and how good are your guess rows between passes. On shorter rows or smaller fields a larger head would be nicer since you won't need to worry about folding the ladder up every time you get in and out. You also need to take into account which tires and spacing you have on the rims. My Hi Tin 443 on my 6620 T2 was a tight fit to the next row with 24.5x32 tires. In soft ground or leaning corn or on pinch rows between planter passes (if say planting 6 and shelling 4) it can be an issue. 
With a 6 row in longer fields you may not be able to make full rounds. I have that now where I can make about 75% of a round then have to run to truck to dump. I alternate passes instead of working lands trying to stomp rows in the direction they will be planted the following year. I'll make several rounds this way then go back and clean up several of the unfinished short sections all at once. That sort of throws off my stomping pattern a bit but has not been an issue yet. I work alone so maximum efficiency and capacity to keep combine moving is not a consideration. Shell enough to load truck, stop, haul to elevator, come back go again. I like working alone and not having to crowd everything all the time. 
If you have longer fields and no help maybe being able to make full rounds would be more beneficial. Personal preference to what works for you. Hi Tin vs Low Tin I would give the thumbs up to low tin, those high end dividers can be problematic in down or broken over corn due to wildlife. A further plus is plastic snoots for these conditions as they are much more slippery and with built in ear savers don't impede the flow. The sheet metal ear saver extensions are a real impediment in down or leaning corn. Oil bath drives on later ones are maybe somewhat better but the old dry drives never gave me any troubles. I converted my old 443 to knife rolls and updated triple gears. They would not allow much on a trade when I went to the 693 so that does not really add much value to the smaller heads. I decided to keep it and have the Roll-A-Cones mounted on it so it sits in the barn as my emergency rescue/backup head. Take a good look at tin work, stalk rolls, auger, sprocket teeth to gauge wear, also look closely at upper gathering chain sprockets for wear and make sure that shaft coming out of the gearbox is tight. They run in bushings that are fed grease from the gearbox via a spring on the internal shaft that feeds grease up to that bushing. If the boxes have been ran with out checking and/or adding grease this bushing can be starved of lubrication leading to wear. Just a few of my observations others will have more and your mileage may vary. |
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| You mean 443 will be tight and yes it is. Also the need to fold ladder up every time you get in and out. |
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Leesburg, Ohio | We ran a 443 on a 6620 for many years. Drive tires were not very big, I think 26L28, but there was adequate room.
443 kept combine loaded in good corn. 6 row would have been a real load, no excess power.
Low tin always preferable. |
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Virginia | We ran a 443 on our Titan II and it was too heavy on the steering axle. Replaced it with a 643 low tin and the machine was balanced much better. |
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southeastern ohio | We run a yellow top 6620 with 28l26 tires and run a 443 corn head. Hillsides, you will want to work your way up the hill. Tight guess rows, you will push some over, planter operator helps there and I'm the bad driver! 24x32 tires would help. We will be going to 6 row in future. the good of the 4 row, we have a lot of fields that surrounded trees or fences, with only one inlet, so it helps get you all the way around to open up the field. Tim |
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Northern Illinois | Bought our first new 6620 in 1981 with a 444 head. We had a few side hills and it didnt allow for much room, especially following contours. We traded for a new 6620 side hill in 1983 and went to narrow rows at the same time. We traded the 444 for a 643 low tin. We much preferred the 643 over the 444. I would go with a 643/93 and make sure to get the poly, it feeds better in my opinion. I have run a 6620 in 200-250 bpa corn. I never felt we ran short on power, just capacity. In 15-18 percent corn I could still run 2.0-2.5 depending on conditions, with no loss. That would be assuming your 6620 is in good shape internally, concave, bars, augers.. If it worn some, you may not be able to run that fast. |
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West Middletown | I should have mentioned my fields were planted with an 8 Row Planter.
This would no doubt reduce my guess rows but then again just because I have 6 rows on the head that doesn't mean I have to use all 6 on every pass. |
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Ne Iowa | A 443 works very good on that combine, wheel spacing is not a big problem. The thing you will have trouble with in tall corn is the leaves will plug the rotary screen. You may have to clean it every dump. |
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southeastern ohio | Ah yes I forgot about the rotary screen plugging. I bought a used aux screen out of the junk yard, $300 ouch!, but it was worth it in the end. |
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SW Minnesota | I did it for over 10 years until I needed a bigger combine. John Deere has a Grill that goes over the rotary screen and works great. I used to have to clean out the screen about that often but the grill fixed it. Somebody on NAT had the part No. for it if a person wanted to do a search for it.
For me a 443 was a nice fit. I still have the combine for sale. It could make a round in half mile rows if you have wide end rows and a tank extension (I have a Mauer} in 200bu corn. I have wide drive tires which made for a tight fit but wasn't bad if I planted on the mark. I don't have any contours and the hills aren't too bad. |
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live in Spfd, farm located NW Macoupin county | Without a doubt, get the 6 row. Low tin prefered.
However, I have seen some low tin on a high tin head. You need to check the serial numbers. There is a serial number break in the high tins where the left post on the back side was spaced out to clear the reverser on the 6620. The rear posts on the earleir heads wre not consistent in their position. To get them to clear on a 6620, some had to be completely cut out and moved over. Others, the post could be spilt, collapsed some with a big hammer and then welded to get the clearance needed. Check with your local JD dearler andthey should be able to tell that break. |
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Coles County, Illinois | I have a 1981 6620 and I run a 643. My Dad bought it new and I bought it off of him in 1998. I almost bought a 493 head for it that had only been used on 100 acres before the owner died. The local JD service manager talked me out of it. The following summer I put a new style concave and rasp bars in it. I found the bell crank of the throttle linkage was incorrectly installed. This was not allowing the 6620 to get full throttle and full fuel flow. I set the no load thresher speed to 2420 rpm.
The machine is a whole new animal now. Last year with a new chaffer installed I was running 3.2-3.4 mph in 230+ corn.
You will have to split 1/2 mile rows but unless your corm makes less that 180 bu/acre a four row won't make it back either. I do have extensions so my tank holds 210 bushels.
I do wish it had more capacity in Soybeans even with the filler plates out 3 mph with a 15' head gets monotonous.
Edited by Herbie56 6/27/2018 14:22
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Kingston,Mi | Neighbor ran a high tin 443 on a JD 7700 with 28L tires, just need to focus on the job at hand. He had the head on a 4400 previous to buying the 7700, so he ran what he had. JD 7700 was a EARLY one, non turbo and a stick shift. |
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mid western ontario | My choice would be 443 low tin. Splits planter works better not on guess rows. I ran that combo for my first 7 years farming and they worked well together other than if there was mud, pushes mud against row of standing corn for u to put into head if you weren't careful. It can also be a bit tricky on side hills cause you are so close to other rows but I always started picking from bottom to eliminate that problem. I don't feel like there are any capacity advantages to a 6 row. Good luck with whatever you decide. |
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| 210 bu.......better keep an eye on the final drives. We had a 6600 that held 165 I believe. Had the axle nut strip and the axle started coming out. |
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| I used a 6620 with a 6 row in irrigated corn for a number of years, and got along well. I put on axle extensions so the tires ran between the rows. I'm not positive but I think the 7720 came with extensions that also will fit the 6620. With bin extensions I could make a 1/2 mile pass in good corn. |
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| 643 low tin. Your 6620 Titan II will handle it fine. Go with the low tin head so you don't have to cut out a chunk of the head for the reverser to fit. |
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CIL | fairviewfarmer - 6/27/2018 18:12
643 low tin. Your 6620 Titan II will handle it fine. Go with the low tin head so you don't have to cut out a chunk of the head for the reverser to fit.
+1....also don’t rule out a 693. They have gotten much cheaper in the last few years. If you ever want to run more aggressive snapping rolls like calmer bt choppers, look for one made around 98 or later. Plus, poly would be nice if you have to battle downed corn.
Edited by WTF2014 6/27/2018 18:25
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| If you bump up the fuel a bit, and raise the top rpm's by 50-100, it makes a lot better running combine, on both 6620's and 7720's.
You wont run out of power, just listen to the tailing elevator to tell you when you start carrying over
Edited by mac4440 6/27/2018 19:01
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Floyd County, Iowa | I had a 443 high tin on my 6620. Worked fine for many years. As said above, the worst thing for me was the rotary screen plugging with leaves and tassels. I got around that by combining in lands, with the screen on the harvested side. Worked better for my wife when turning around on the ends, too.
The other thing was tank capacity. A 643 would have never worked for me because the tank would be full all the time. It was "bad" enough with a 443 figuring out where to park wagons so we could dump efficiently. Ended up having most of the wagons on the south end and a couple in the middle. Go north to the middle, dump what was in the tank, finish going north and go south to the end and dump the full tank. Repeat, repeat.....
Worked fine that way.
Now I have a 9400 with Mauer extension, and a 643 low tin with all poly. Tank is bigger, but now park wagons on each end and dump every time we turn. Works this way, too. Longest rows are about 20 rods short of 1/2 mile
Also, I never got over about 2.8 mph with the 6620/443 setup. I ran it with the sieves pretty tight for clean sample and could run it over the back much faster than that. I don't figure that I have to run at full capacity.
Edited by oldbones 6/27/2018 21:00
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ND | In country here where 6620's not to prevalent, we ran a 643 on a 7720 for 10 yrs then switched to a 9500 so no problem. Would think a 6r a bit too much for a 6620. In good corn a 6r on a 9500 will be full before the half mile line with no added extensions. |
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| WTF2014 - 6/27/2018 18:16
fairviewfarmer - 6/27/2018 18:12
643 low tin. Your 6620 Titan II will handle it fine. Go with the low tin head so you don't have to cut out a chunk of the head for the reverser to fit.
+1....also don’t rule out a 693. They have gotten much cheaper in the last few years. If you ever want to run more aggressive snapping rolls like calmer bt choppers, look for one made around 98 or later. Plus, poly would be nice if you have to battle downed corn.
+1 |
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Deere 6620 Titan II Corn Head 443 or 643? HI Tin or low Tin
