20 vs. 30 series John Deere - The Combine Forum

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post #1 of 8 (permalink) Old 01-08-2017, 01:25 PM Thread Starter
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20 vs. 30 series John Deere

Currently upgrading tractors and I have been looking for either an 8320 or 8330. I initially started looking for 20's and realized that if I look hard enough the 30's really aren't any more expensive, 20's seem to be over priced and less common. So my question to you guys that have owned both are would a 30 series with the same hours be worth an extra $5-$10? I know that the 30's have the 9L motor and im curious whether or not it has the reliability of the 8.1 in the 20's. This tractor is primarily going to be my planting and drilling tractor for now so it won't be getting worked overly hard, I have a 3pt 16 row john deere and a 30 foot landoll drill. In the future however I may be looking into a 16 row strip till and if that were the case I would end up turning this tractor up to pull it. Im guessing the 9L would handle the extra bump in horsepower better then the 8.1? If anyone with some experience in these tractors can can offer some advice it would be appreciated.



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post #2 of 8 (permalink) Old 01-08-2017, 01:49 PM
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20 to 30 series I think the biggest difference would be in the transmission. If you can get an IVT in a 30 series as opposed to a 20 series, I'd go with the 30. We went from an 8300 to an 8230. Huge upgrade. Never went for the 20 series from the 00 series because couldn't really see the benefit.

I like the 9.0L engine, but we never had issues with our 8.1L's either.

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post #3 of 8 (permalink) Old 01-08-2017, 02:58 PM
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Our 8330 has been great, still use it every day, done about 9,500 hrs..
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post #4 of 8 (permalink) Old 01-08-2017, 04:28 PM
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I love our 30 and our Deere tech has warned us numerous times to avoid the 20s when the 30s an option. nothing specific, just made it seem they adressed a lot of poorly engineered designs
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post #5 of 8 (permalink) Old 01-09-2017, 05:30 AM
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Our 07 8330 had the hp turned up to 320hp on the pto as soon as it was out of warranty. Has over 6000hrs now and no problems yet.
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post #6 of 8 (permalink) Old 01-09-2017, 08:38 AM
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The 30 series tractors have the 9.0L engine which has EGR. EGR exhaust gas recirculation. This means they have a VGT turbo ( variable geometry turbo), an EGR cooler and an EGR valve. Deere used EGR along with less timing to meet T3b emissions. The 9.0L engine is a bit more robust than the 8.1L and works well up to 400hp. Contact your local Ekotuning dealer. They can help you with a custom hp upgrade and advise you on the differences between each model. They can also provide help with reducing EGR downtime and expense.

The 30 series tractor offered in different markets SA and Russia doesn't have EGR.

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post #7 of 8 (permalink) Old 01-09-2017, 12:35 PM Thread Starter
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Currently looking at an 8330 with 6000 hours and an IVT. Are those IVT's prone to have any problems when they get higher hours?


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post #8 of 8 (permalink) Old 01-09-2017, 02:15 PM
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Most of the IVT issues I've seen were at lower hours from manufacturing defects
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