first starts are my favorite part of a build nothing better then a shop full of smoke as it comes to life and that distinct smell of first start diesel. Definitely subscribed for all the tractor awesomeness!!!!!!
Love the timelapse video. That brings back a lot if memories. The square cab. We had the old bi-cool a/c with water and a rotating filter on top of the cab. When you would hit a bump or go off camber, it would soak you with water. Lol. But, it was worth it in the Georgia August heat.
You guys need an exhaust collection system. Dealerships in northern Iowa had them 50 years ago so they didn’t have to open doors when it was cold. I remember a dyno test on dads 444 MH in the shop for seems like a hour. No smoke in the shop.
I sure miss turning wrenches with my dad. I must have been 8 or 9 he taught me to rebuild the starter off our 4020. Two years later my little brother and i took out the transmission while dad was planting corn. We never got in trouble except for putting the splitting stands on backwards. Good job guys
Great video! Sad to see that old 7700 put down tho...they were the best in their day and yours looked to be in pretty nice shape considering its age. Hope the tractor serves you well for years to come.
I hear you...It was sad to see it go too, I learned to drive combine at 9 years old in that girl. It was in good shape for it's age and at 3,400 hrs it could have ran more. But It was worth more to us in the engine than a combine. The tractor is a beast now and runs a grain vac like no other.
That's a nice shop for working on tractors I wish I had a shop like this I hope to build one that I can store my tractors in and restore them in the same building but it must be nice having all the equipment in that shop to do most of it your self
At first when I saw the tractor and the combine I thought the engine would be way to big, but once the engine was shown in the combine it looked like a baby engine in the combine.
@Ethan Brooks No, but that we had a motor from our combine (worn out) that we salvaged, rebuilt and used as a spare in the 8N. As soon as the 8N started getting weak, we'd start rebuilding the other. Worked nice.
@@xade7863 Why? Dad worked full time AND farmed. We could switch the engines in a couple of hours and be back in the field. Then dad could tear it down and rebuilt it at his leisure.
I got 4000 1972 year one of the last ones that roled off the pruduction line it and the 4020 are basically the very same tractor it is so versatile and I wouldn't take a share in the railroad for it John Deere should still make tractors like the 20 series and also have 2020 1972 year model and never has the lift ever leaked down on it the 20 series tractors were and are still great tractors
WOW so cooll i like the song this tractor make and im suprised you use it today for grain pump trailer i realy cool for a 1969 john deer tractor this tractor dont want go into the back farm scrap he want continue live with welker farmer familly love you guys !
Nick, when you do your next time-lapsed video, is there a way you can set a timer on your camera to show people how long that 7 minute video ACTUALLY took you guys?
Not a farmer but I like watchin tractors in the field around my house. Is the engine out of the combine much bigger than the engine out of the combine? I would think it would have to be considering the size difference between the two machines.
It is surprisingly the same block. Main difference is the age of each, the combine was several years newer and so it had an upgraded fuel delivery system which is a lot more reliable and more hp. It's amazing how many machines john deere put that engine in.
We're using her right now on a grain vac, running great minus a few little oil leaks. I don't know the horsepower but if I were to guess I'd say its somewhere around 150-170. I do need to get more video of her running!
+MRJOHNDEERE3720. :) Sure did. The 7700 had a newer turbo and fuel injection setup so the tractor gained a modest 30-40 hp. We did have to fabricate a new intake as the intake manifold and exhaust manifolds were different on this engine. Other than that just a few tweaks here and there, we've probably got 40 hours since the swap and its running strong.
looks good. going to need to do that to my 4520 soon it's got over 14000 hrs on it. that air filter rig looks pretty strong got any more videos/info on it?
14,000 hours is a good life on that engine! I don't have any more videos besides what was seen in that video. The reason we didn't use the original air cleaner is the engine from the 7700 combine had a different exhaust manifold and turbo design than the 4520. We found it easier to reroute the intake to an air cleaner taken from the combine and put it between the passenger rear wheel and frame and then run a snorkel above the cab. Only problem is we run a grain vac and I think that intake sucks up a lot of the dust our vac is putting out haha.
R.i.p 7700 John Deere combine how long have you guys had the 7700 turbo? Anyway glad to see that the 4520 is running again you should call is old rloller because it looked as if it was rolling coal in the shop it is understanding that you would make a engine transplant we had to do it with our kenworth a few years ago ah well glad to see that the 4520 is running again great time lapse as always
The 4520 was so underpowered for the strength of the front end and the rear end. I once saw a 4520 with a 4840 engine. It had a bit of a bump in the hood but that was a much better match for the front and rear ends of the tractor. It could really make silage!! The other major advantage was you got away from the wretched Roosa-Master CDC distributor injection (although most farmers converted them to the DB pump) and now had a P Series Bosch inline injection pump. It also had an intercooler.
The motor you guys put in that tractor is what Deere should have done in the first place. Horrible fire prone air filtration system and a troublesome injection pump, other than that the 4520s were well built. The 4620s corrected those issues plus was the first farm tractor to be equipped from the factory with an intercooler and were very reliable sharing the same motor appearing in the early 7020s. In the days of your combine motor, emissions was an aneroid valve on the injection pump. Tier 4 was how high the big bales were, not the mandatory engine killing emissions standards.
+Nick Welker Mostly due to an inline injection pump on the combine engine. The old original engine used a distributor type that was pretty marginal. They used 3 different pumps on the 4520, the last one being the best one of the 3 but still very unstable. Deere replaced a lot of engines in those tractors because the air filters would catch fire sending ash into the engine plus tons of dirt in a day's time. I like you air filter system you engineered. The 4620s had a door at the rear of the hood to access the air filter. The 6030s stuck thru the hood. Always wanted to see if a 6030 air filter would fit my 4620. I would love to have a late 6030. Is this tractor PS or Syncro?
We only have one and so our experience is the 4000 hour new motor! But part of that was our fault with messing with the diesel pump, which leaked into the crank case causing bearing damage. This new/used engine is running great though.
How many Horse Power do these john deere now have? Nice video, I love your time laps.👍🏼Nice to see how you change engines from tractor. (My english is not the best, sorry for that)
+I_bin_da_Alex __ Being a combine engine it is designed to run at max rpm so it has most of its power in the higher rpms and compared to the old engine it is a lot more powerful! We use it for our grain vac.
That’s awsome .. sounds amazing .. love how you guys repurpose things on the farm .. not only savings in purchasing newer tractor but accomplishing a project together as father an sons .. creating memories forever !! Curious of the horsepower tractor originally had an what it has now ? An combine motor was turbo which the tractor motor probably wasn’t lm guessing ? Really great idea an excellent job well done !!👍
+Drew L Thank you! I could be way off but I seem to think the old engine was 145 hp and this new one is 175 hp. So 30 or so? It definitely feels more powerful!
Great video! I just replaced my first engine this winter with success 👍. I was wondering where you farm at? Your fields are huge! Our 50 foot cultivator would look tiny in your fields! Haha, once again great video. I love all of them, keep it up!
+Isaac Albert nice work! It's fun replacing an engine, lot of work but fun when done. We farm just outside of Shelby montana. The drone makes them look bigger than they are but to some areas I imagine they are pretty big. Average field is probably 100-150 acres. We only run a 57ft cultivator so not much bigger than yours! Thanks for watching:)
+yayaya1193able I bet it is, if it is the 404 block. John Deere used that block in many different models of their machines. Some just had different turbos and injection pumps for more hp.
Nice, used to have a 6600 (which is at least that series of combine), you won't find one better. (Or you might have some things to say about it while in the shop ;))
John Deere did build them well. We have had some problems with the powershift transmission and had it worked on but otherwise it is a great tractor to drive and very simple!
I have considered doing the same with my 1969 4520 (Roosa Master "C" rotary injection pump) and my 1977 7700 turbo combine (3500 hrs.). I was told, however, that the injection pump on the combine is governed only at 2200 rpm and has no power when throttled at lower speeds. I was told that I would have to put a in-line Bosch tractor injection pump on the unit. Did you change yours?
Awesome! Ours was a Roosa Master C too. We had it rebuilt and ever since it would leak fuel into the crank case, had it looked at multiple times and every time they said it was fuel shouldn't be leaking. Engine ended up leaning out with diesel to the point of failure. I believe we used the same 1977 7700 turbo titan 2 for our repower. It red-lines around 2300-2400 rpm. Though our 7700 did have a Bosch inline injection pump so perhaps it is newer than 1977. Maybe 1979? I should know but can't remember at the moment. This combine engine runs circles around the old 404 that we replaced. It has loads of power in high rpms and seems to have good torque in the lower rpms as well. We have only used this tractor to run a grain vac and plow our wind break with a 12 ft plow. It is nice driving down the road the extra rpm makes the tractor top out around 20-23 mph. The combine had over 4000 hrs and so the engine was well used but it starts well and quits smoking once at operating temperature. The biggest issue we ran into with this repower was the exhaust and intake. The combine engine's exhaust and intake manifold are designed totally different than the 4520 and the turbo is in a different location. Rather than trying to swap turbos and manifolds we just re-routed the intake to the air filter(taken from the 7700) which is now between the passenger driver wheel and frame and then ran a snorkel above the cab. It is easier to change now than the stock air cleaner and you have one less thing poking out of the hood. I'd have to check but I think we also had to slightly modify the shaft coming off the water pump so it could fit the fan as the combine doesn't run the fan from that location, but I could be wrong and would have to confirm this. The Bosch pump also uses a mechanical shut off so I just grabbed a lawn mower throttle cable and ran it into the cab so you can turn off the engine there. Let me know if you have any more questions, it turned out well for us but there were some "fabricating moments".
good job i enjoyed the video..
+onelonleyfarmer Thank you!
as soon as you lift that clutch you get that massive reward from achievement 😉 good job fella
+driveheronman that is the best part!
I like how the dog takes off when the machine starts up with all that smoke.
+adrian humphreys It's amazing how those dogs can just lay around while large and noisy equipment is running haha.
I just love the turbo sound and the engine sound when its revving
Restore the combine too!! I love too see the older stuff brought back to life!!
No they still have it but it’s in rough shape
It’s in the hundred K live stream about an hour in
it's nice to see things run and hear their power it's nice to hear machines run with minimal or no problems
I helped a neighbor put that same 7700 motor in a 4020 powershift. THAT is a fun tractor to run!
Nice Glock hoodie. Even better to see Ol' Glory proudly displayed.
Haha you bet! We love our guns and country!
These time-lapse videos you make are wonderful. Thank you!
+MinnesotaEric thank you for watching them, it is fun to see it come together in the end.
bring back old iron, and keep the history alive. great job!
Thanks!
Nothing like the smell of diesel fumes in the morning!
How about lung disease in their early- to mid-forties?
It's no less macho to have a good exhaust fan switched on in your workshop.
So impressed with your skill love watching these tractor redo viedos
first starts are my favorite part of a build nothing better then a shop full of smoke as it comes to life and that distinct smell of first start diesel. Definitely subscribed for all the tractor awesomeness!!!!!!
+Michael Casella it makes the heart pump after all that work and hearing her fire up for the first time!
Now she starts like a old 4430
Nice job. Sounds good.
Love the timelapse video. That brings back a lot if memories. The square cab. We had the old bi-cool a/c with water and a rotating filter on top of the cab. When you would hit a bump or go off camber, it would soak you with water. Lol. But, it was worth it in the Georgia August heat.
Nice. Good to see a Deere run again. Nothing like diesel fog in a shop.
Oby-1 Walker farms
You boys sure can party! Love the time lapse
Thank you! It sure is a party working on old machinery:)
i love the moment when the dog sees the smoke and it's all like ; i'm outta here!
You guys need an exhaust collection system. Dealerships in northern Iowa had them 50 years ago so they didn’t have to open doors when it was cold. I remember a dyno test on dads 444 MH in the shop for seems like a hour. No smoke in the shop.
Thanks for allowing your farm on Farningham simulator 17 because I like what you have done it
Farming*
I wish we could work on our tractor at that speed lol I'd put it on a time laps and no one would have a clue what we were doing
it been a while since I have seen this What a different that new lighting inthe shop makes!
Dang yall was busier than a ten petered billy goat ! Wish i could get my youngins to move that quick !
That took so long, the dog had pups. Nice transplant.
I sure miss turning wrenches with my dad. I must have been 8 or 9 he taught me to rebuild the starter off our 4020. Two years later my little brother and i took out the transmission while dad was planting corn. We never got in trouble except for putting the splitting stands on backwards. Good job guys
That is great, always fun working on machinery with family. Thanks for watching!
Leg arms always ben on dam good machanic both all you should be doing stuff like this making crazzy money
Great video! Sad to see that old 7700 put down tho...they were the best in their day and yours looked to be in pretty nice shape considering its age. Hope the tractor serves you well for years to come.
I hear you...It was sad to see it go too, I learned to drive combine at 9 years old in that girl. It was in good shape for it's age and at 3,400 hrs it could have ran more. But It was worth more to us in the engine than a combine. The tractor is a beast now and runs a grain vac like no other.
I have a 8820 John Deere combine with barely 1000hr bout it from a old man who did not use it much great shape
That's a nice shop for working on tractors I wish I had a shop like this I hope to build one that I can store my tractors in and restore them in the same building but it must be nice having all the equipment in that shop to do most of it your self
Let’s see one of those MM’s get some some. Enjoy watching keep them coming.
You should give that old girl a shot of paint. You do such a damn good job of the big buds and that magnum
Another great video Nick.
+Parker Jessen Thank you Parker!
imagine how many sunrises and sunsets happened....good job.
Congratulation Dick , a great work ...
+juan asanelli thanks Juan!
Time to rebuild other motor and keep for tractor in 10 years as quick replacement.
Outstanding swap video. Thanks much.
+billrok Thank you!
Great video! Looks like fun!
+Samuel McKinley Thanks it is!
At first when I saw the tractor and the combine I thought the engine would be way to big, but once the engine was shown in the combine it looked like a baby engine in the combine.
They are the same engine basically but combine had higher hp:) It works great!
Y’all need a exhaust fan to pull that smoke out.
Love it! We had an ole 4020 Jd growing up. I hope to come across one in the next few years an restore it.
I think it’s insane you can do that I’d never think of doing that!
Man this looks like fun
Man I wish I could rebuild as many machines as y'all do that would be fun
This must have been a lot of work! Great job, guys!!
That's what Dad did. The old Combine had the same engine as our 8N had. Flathead 4. A direct replacement, though. Nothing complicated.
@Ethan Brooks Not our combine. Ours ran a flathead 4 from the Model A Ford (different cam).
@Ethan Brooks No, but that we had a motor from our combine (worn out) that we salvaged, rebuilt and used as a spare in the 8N. As soon as the 8N started getting weak, we'd start rebuilding the other. Worked nice.
@@oldad6207 wouldn’t it just be easier to rebuild the motor in the 8n then switch them?
@@xade7863 Why? Dad worked full time AND farmed. We could switch the engines in a couple of hours and be back in the field.
Then dad could tear it down and rebuilt it at his leisure.
@@oldad6207 still wouldn’t it just be easier to do a in frame rebuild that would take about 8 to 10 hours and not have to pull the motor out
😂 the dogs reaction on the first start is priceless
I got 4000 1972 year one of the last ones that roled off the pruduction line it and the 4020 are basically the very same tractor it is so versatile and I wouldn't take a share in the railroad for it John Deere should still make tractors like the 20 series and also have 2020 1972 year model and never has the lift ever leaked down on it the 20 series tractors were and are still great tractors
Be glad you guys don’t ha e fire alarms in there
WOW so cooll i like the song this tractor make and im suprised you use it today for grain pump trailer i realy cool for a 1969 john deer tractor this tractor dont want go into the back farm scrap he want continue live with welker farmer familly love you guys !
Nice work!
Thanks!
This tractor have the best sound ever
Nice! Glad it fit well
Nice video, sound great too
+Jan Kotze thanks! It's been running strong, only use is powering a Brandt 5200ex grain vac.
Thanks, is it a 4020? sorry for asking maybe I missed it
+Jan Kotze Its a 4520, not sure the exact year.
Thank You Nick
+Jan Kotze you bet!
Love the flag.. Awesome touch
Thanks Jon Doe! We love patriotic flags!
NICE upgrade. And no regen
Would love to see more videos on this tractor
I love the tractor,I should buy one when I get older,it’s a nice one
I love the intro
+Timelapse fun Gaming Thanks!
Sounds like a combine😎
Nick, when you do your next time-lapsed video, is there a way you can set a timer on your camera to show people how long that 7 minute video ACTUALLY took you guys?
Great work!!
FLAVIO RICARDO to to h
you guys need to restore a combine it would be amazing to see in timelapse
Haha well with wheat prices as low as they are you might see us do that someday! Gotta save money where we can!
The sound🤤
I always get good vibes from these videos
I love that John deer sooooooo much
Fantastic sound
Not a farmer but I like watchin tractors in the field around my house. Is the engine out of the combine much bigger than the engine out of the combine? I would think it would have to be considering the size difference between the two machines.
It is surprisingly the same block. Main difference is the age of each, the combine was several years newer and so it had an upgraded fuel delivery system which is a lot more reliable and more hp. It's amazing how many machines john deere put that engine in.
My dad had a 4400 once. He converted it to a forage harvester using parts from a junkyard new Holland that didn’t run
You guys should fo a full restoration on it some day
And the combine, too
Some day
12 year old Farmer Trust me they will never touch that old piece of crap combine
wkLeoTrooper There is no point that thing is a piece of junk
Thanks!
+CowBoy21 VLOGS You bet!
Just wondering if there is a different video of this beast running.... you should put it on a dyno
We're using her right now on a grain vac, running great minus a few little oil leaks. I don't know the horsepower but if I were to guess I'd say its somewhere around 150-170. I do need to get more video of her running!
Pls do a video whit him at work.
I have a JohnDeere-Lanz 310 from 1964!
Can we pleaseeeeee have an equipment tour?
I need to do that! Once I finish my latest video project I could put together a quick equipment tour video.
Well that whould be great lad!!! Been keeping waiting for such a vid.
Nice John Deere 👍
nice vid. :) so both had the same motor?
+MRJOHNDEERE3720. :) Sure did. The 7700 had a newer turbo and fuel injection setup so the tractor gained a modest 30-40 hp. We did have to fabricate a new intake as the intake manifold and exhaust manifolds were different on this engine. Other than that just a few tweaks here and there, we've probably got 40 hours since the swap and its running strong.
Nick Welker
o ok nice. :)
I love your video from Italy :)
+Alessio Fabbretti Thanks Alessio! I don't know of this sounds cheesy but my wife and I just finished some delicious gyros!
+Alessio Fabbretti Thanks Alessio! I would love to see Italy some day!
looks good. going to need to do that to my 4520 soon it's got over 14000 hrs on it. that air filter rig looks pretty strong got any more videos/info on it?
14,000 hours is a good life on that engine! I don't have any more videos besides what was seen in that video. The reason we didn't use the original air cleaner is the engine from the 7700 combine had a different exhaust manifold and turbo design than the 4520. We found it easier to reroute the intake to an air cleaner taken from the combine and put it between the passenger rear wheel and frame and then run a snorkel above the cab. Only problem is we run a grain vac and I think that intake sucks up a lot of the dust our vac is putting out haha.
R.i.p 7700 John Deere combine how long have you guys had the 7700 turbo? Anyway glad to see that the 4520 is running again you should call is old rloller because it looked as if it was rolling coal in the shop it is understanding that you would make a engine transplant we had to do it with our kenworth a few years ago ah well glad to see that the 4520 is running again great time lapse as always
I love your shop!
Thanks!
The 4520 was so underpowered for the strength of the front end and the rear end. I once saw a 4520 with a 4840 engine. It had a bit of a bump in the hood but that was a much better match for the front and rear ends of the tractor. It could really make silage!! The other major advantage was you got away from the wretched Roosa-Master CDC distributor injection (although most farmers converted them to the DB pump) and now had a P Series Bosch inline injection pump. It also had an intercooler.
the 4840 had a 466 engine also instead of the 404.
How long did the project actually take
+Mitchell fischer we wrapped it up in about two months but some days we didn't work on it. Waiting on parts usually slows things down.
Are you guys planning on restoring eny of the old tractor that you have sitting around?
The motor you guys put in that tractor is what Deere should have done in the first place. Horrible fire prone air filtration system and a troublesome injection pump, other than that the 4520s were well built. The 4620s corrected those issues plus was the first farm tractor to be equipped from the factory with an intercooler and were very reliable sharing the same motor appearing in the early 7020s. In the days of your combine motor, emissions was an aneroid valve on the injection pump. Tier 4 was how high the big bales were, not the mandatory engine killing emissions standards.
That's really informative thanks for sharing! It seems to be a great running engine and the power difference between the two is very noticeable.
+Nick Welker Mostly due to an inline injection pump on the combine engine. The old original engine used a distributor type that was pretty marginal. They used 3 different pumps on the 4520, the last one being the best one of the 3 but still very unstable. Deere replaced a lot of engines in those tractors because the air filters would catch fire sending ash into the engine plus tons of dirt in a day's time. I like you air filter system you engineered. The 4620s had a door at the rear of the hood to access the air filter. The 6030s stuck thru the hood. Always wanted to see if a 6030 air filter would fit my 4620. I would love to have a late 6030. Is this tractor PS or Syncro?
My dad and I have a 4620 and about bout a 7020 well working for 5-6 grand only we went Saturday the 7020 sold Friday
Thomas Stears Thats pretty cool Thomas!
+Thomas Stears jo
Are you ever going to restore the 4520?
the 4520 one of john deeres 50-50 tractors
half of them were great
the other have got new motors at 4000 hours
We only have one and so our experience is the 4000 hour new motor! But part of that was our fault with messing with the diesel pump, which leaked into the crank case causing bearing damage. This new/used engine is running great though.
I really love ur dogs.. Great Farm Btw
Looks like you got the conbine engine reconditioned?
We didn't do any internal work to the engine, pulled it in a running condition and its been running ever since which is great!
How many Horse Power do these john deere now have?
Nice video, I love your time laps.👍🏼Nice to see how you change engines from tractor.
(My english is not the best, sorry for that)
+I_bin_da_Alex __ It should be around 165 hp at 2400 rpm. Thank you for watching! I hope to have more videos like these in the future.
Welker Farms Inc 165 hp in these tractor. Thats a lot
+I_bin_da_Alex __ Being a combine engine it is designed to run at max rpm so it has most of its power in the higher rpms and compared to the old engine it is a lot more powerful! We use it for our grain vac.
Welker Farms Inc hey from Ireland. Love ur vids👍👍 subscribed😁
That’s awsome .. sounds amazing .. love how you guys repurpose things on the farm .. not only savings in purchasing newer tractor but accomplishing a project together as father an sons .. creating memories forever !! Curious of the horsepower tractor originally had an what it has now ? An combine motor was turbo which the tractor motor probably wasn’t lm guessing ? Really great idea an excellent job well done !!👍
Darren Sager the tractor originally had a turbo
South Dakota Ranch life oh ok thanks for the reply appreciate it 👍
You can't get folk to work like that anymore!
Awesome video! What was the hp gain from the old engine swap
+Drew L Thank you! I could be way off but I seem to think the old engine was 145 hp and this new one is 175 hp. So 30 or so? It definitely feels more powerful!
How much power increase did you see if any? What are each motors rated at?
Great video! I just replaced my first engine this winter with success 👍. I was wondering where you farm at? Your fields are huge! Our 50 foot cultivator would look tiny in your fields! Haha, once again great video. I love all of them, keep it up!
+Isaac Albert nice work! It's fun replacing an engine, lot of work but fun when done. We farm just outside of Shelby montana. The drone makes them look bigger than they are but to some areas I imagine they are pretty big. Average field is probably 100-150 acres. We only run a 57ft cultivator so not much bigger than yours! Thanks for watching:)
Iove the vids
What did you do with the combine?
It is parked in our equipment graveyard:)
Scrap pile
is that the same motor thats in the 4440?
+yayaya1193able I bet it is, if it is the 404 block. John Deere used that block in many different models of their machines. Some just had different turbos and injection pumps for more hp.
Same as 4430, 4440 has 466 engine if I'm not mistaken. Sounds just like a 4430 when starting up.
FC Koegelenberg eh some have 404s but most people find a 466 engine. Damn those 4430s are hard as hell to start in the cold lol
Nice, used to have a 6600 (which is at least that series of combine), you won't find one better. (Or you might have some things to say about it while in the shop ;))
the tractors in them years 4010 thu 4020 were great not as comfortable but they seem to hold together .
John Deere did build them well. We have had some problems with the powershift transmission and had it worked on but otherwise it is a great tractor to drive and very simple!
I have 4630 with probly the same tran its been rebuit twice in 1100 hours
I have considered doing the same with my 1969 4520 (Roosa Master "C" rotary injection pump) and my 1977 7700 turbo combine (3500 hrs.). I was told, however, that the injection pump on the combine is governed only at 2200 rpm and has no power when throttled at lower speeds. I was told that I would have to put a in-line Bosch tractor injection pump on the unit. Did you change yours?
Awesome! Ours was a Roosa Master C too. We had it rebuilt and ever since it would leak fuel into the crank case, had it looked at multiple times and every time they said it was fuel shouldn't be leaking. Engine ended up leaning out with diesel to the point of failure. I believe we used the same 1977 7700 turbo titan 2 for our repower. It red-lines around 2300-2400 rpm. Though our 7700 did have a Bosch inline injection pump so perhaps it is newer than 1977. Maybe 1979? I should know but can't remember at the moment. This combine engine runs circles around the old 404 that we replaced. It has loads of power in high rpms and seems to have good torque in the lower rpms as well. We have only used this tractor to run a grain vac and plow our wind break with a 12 ft plow. It is nice driving down the road the extra rpm makes the tractor top out around 20-23 mph. The combine had over 4000 hrs and so the engine was well used but it starts well and quits smoking once at operating temperature. The biggest issue we ran into with this repower was the exhaust and intake. The combine engine's exhaust and intake manifold are designed totally different than the 4520 and the turbo is in a different location. Rather than trying to swap turbos and manifolds we just re-routed the intake to the air filter(taken from the 7700) which is now between the passenger driver wheel and frame and then ran a snorkel above the cab. It is easier to change now than the stock air cleaner and you have one less thing poking out of the hood. I'd have to check but I think we also had to slightly modify the shaft coming off the water pump so it could fit the fan as the combine doesn't run the fan from that location, but I could be wrong and would have to confirm this. The Bosch pump also uses a mechanical shut off so I just grabbed a lawn mower throttle cable and ran it into the cab so you can turn off the engine there. Let me know if you have any more questions, it turned out well for us but there were some "fabricating moments".
Did it mate right up or did you have to make adapter plates?
Same block so mated right up without any issue 😁
You guys should look at getting into the Motorsport of truck and tractor pulling
What horsepower does the new engine produce
Jack Griffin probably in the region of 360-450bhp judging by the age looks of the combine harvester
I believe it’s closer to 150hp IIRC