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John Deere Tractors Discussion Forum
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3020 engine swap

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Mauldin1

06-07-2020 10:21:01




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I've seen posts about swapping a 4239 engine into a 3020 but no one really involved a list of parts needed. Can someone help with that?




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buickanddeere

06-21-2020 09:39:23




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 Re: 3020 engine swap in reply to Mauldin1, 06-07-2020 10:21:01  
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Well then he needs a donor 4030 .



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fdt860

06-21-2020 09:23:25




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 Re: 3020 engine swap in reply to Mauldin1, 06-07-2020 10:21:01  
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Mauldin, where are you from, this is an European tractor fitted with 4920 weight brackets. I have same plans that you have. If you are from Europe, 4040 parts are easy to get. You need 4040 rear plate, oil pan and front pump support.



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Mauldin1

06-25-2020 13:50:33




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 Re: 3020 engine swap in reply to fdt860, 06-21-2020 09:23:25  
I'm in the United States. These tractors were shipped over here. The front weights are off the 3020 I'm wanting to repower just made them fit it.



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MikeJM

06-21-2020 04:45:17




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 Re: 3020 engine swap in reply to Mauldin1, 06-07-2020 10:21:01  
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I dont understand, why do you need a 2510/2520 for parts when doing a 300 series engine swap on a 3020? I used one part from a 2510 when I did my swap, the water pump back plate. The rest from a 4030.

Mauldin,
If you use the 329, which is up to you, youll need to get longer frame rails, lengthen all the hydraulic lines and figure out a longer hood. It would basically be a dry clutch 4030 at that point.

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buickanddeere

06-19-2020 05:29:05




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 Re: 3020 engine swap in reply to Mauldin1, 06-07-2020 10:21:01  
Not practical unless you have a donor 2510/2520 for parts .

And if you have a 2510/2520. It is worth repairing and forget about the 3020.



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Mauldin1

06-18-2020 17:14:43




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 Re: 3020 engine swap in reply to Mauldin1, 06-07-2020 10:21:01  



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MikeJM

06-09-2020 18:01:05




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 Re: 3020 engine swap in reply to Mauldin1, 06-07-2020 10:21:01  
Now that we have a 2510 Ill have to measure the width and see if it will work.



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Mauldin1

06-18-2020 17:12:49




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 Re: 3020 engine swap in reply to MikeJM, 06-09-2020 18:01:05  
I have a 3130 with a fairly fresh engine rebuild and bad transmission, will probably just use the 6329 out of it in the 3020.



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MikeJM

06-08-2020 04:38:55




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 Re: 3020 engine swap in reply to Mauldin1, 06-07-2020 10:21:01  
I used a 3020\4020 flywheel. The bolt circle is slightly different. And the spacer has to have piloting features to keep the flywheel centered and concentric.
The only other way would be to have a custom one made or if by chance you had access to Argentine 2420 parts.



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cornerpost

06-08-2020 08:46:30




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 Re: 3020 engine swap in reply to MikeJM, 06-08-2020 04:38:55  
If going to trouble why not a 4276? From the peanut gallery.



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Mauldin1

06-08-2020 19:17:07




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 Re: 3020 engine swap in reply to cornerpost, 06-08-2020 08:46:30  
The 4239 and 4039 is a dime a dozen in my area and cheaper than dirt.



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MikeJM

06-07-2020 11:42:31




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 Re: 3020 engine swap in reply to Mauldin1, 06-07-2020 10:21:01  
I did a comprehensive set of posts a few years back on a 239 swap.
The short list is you need the back plate and front pump support from a 4030. Pump drive from a 4230. Depending on what your 239 came out of you may need to change the front pulley and water pump to the smaller one used on the Dubuque tractors.
To get the flywheel on to the crank youll need to have an adapter fabricated half inch thick and the flywheel modified.
Frame rails need to be modified to bolt to the new adapter plates.

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tomstractorsandtoys

06-09-2020 11:27:26




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 Re: 3020 engine swap in reply to MikeJM, 06-07-2020 11:42:31  
I was told that if you use a 2510 hyd pump bracket you can also use the 2510 frame rails. Never have done one but have thought about it. Tom



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Mauldin1

06-07-2020 14:58:11




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 Re: 3020 engine swap in reply to MikeJM, 06-07-2020 11:42:31  
What modifications have to be made to the flywheel? Did you use the 3020 flywheel or a different one?



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