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John Deere The Green machines |
06-04-2012, 09:44 AM
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#1
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Name: kentuckydiesel
Title: Rookie
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Interesting facts about JD 2.9 3cyl...so how much power can I get????
I was doing valve adjustments on my '95 5200 yesterday when I started looking at how "beefy" the head/block appeared to be. I decided to go back and check the specs on rod journals, crank journals, wrist pins, bore/stroke...then compare them to my 7.3 Powerstroke which has been putting out about 350hp for the past 200,000mi...maxing out at 35psi with the stock turbo (now having 345,000mi) with no internal engine or turbo issues to date.
To my surprise, Like my 7.3, the Powertech 2.9 has forged rods. The crank journal, rod journal and wrist pin specs are within thousanths of the 7.3, the bore/stroke is just a slight bit over that of the 7.3, and the 2.9 has a 17.2:1 compression ratio, vs 17.5:1 on the powerstroke.
If I have reliably made 350hp (43.75hp per cylinder) for this long, why shouldn't I be able to turbo the 2.9 and be able to produce the same 43.75hp per cylinder, bringing it to 131.25hp? It is direct injected...though I might need a larger pump than the little Lucas-CAV pump which I already have turned up almost all the way (and it still only smokes grey on hard acceleration at lower RPMs)
Unfortunately I haven't been able to find the Int/Ext valve sizes on the 2.9, so I can't compare that, but surely it's close.
Thanks,
Phillip
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06-04-2012, 10:11 AM
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#2
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Name: CSnyder
Title: Snyder-Motorsports
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subscribed
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Alot of my life is easier thanks to Mumau Diesel! and Goerend Transmission
There is a HUGE difference between cocky and confident when it comes to engine building.
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06-04-2012, 10:16 AM
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#3
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Name: LReiff
Title: The Antistock
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3 cylinders + 4 stroke = 1 compression event every 240 degrees. Research, moment of inertia.
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Lee
Quote:
Originally Posted by 4x4dually
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06-04-2012, 10:17 AM
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#4
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Name: IHCbigjohn
Title: Likes everything to match
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Join Date: Jan 2012
Location: Orange, TX
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What is it rated at originaly?
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06-04-2012, 10:20 AM
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#5
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Name: RDPsmoker
Title: OUT TO LUNCH..
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Location: Casper or Laramie WY
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Posts: 1,815
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Just throw a little hx35 on it and see how it goes! Only one way to
find out.
__________________
-DUSTIN-
THANKS TO MAXTORQ
95 2500
-DPC
-SUNCOAST
03 3500
-Stock for now
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06-04-2012, 11:20 AM
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#6
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Name: kentuckydiesel
Title: Rookie
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Quote:
Originally Posted by LReiff
3 cylinders + 4 stroke = 1 compression event every 240 degrees. Research, moment of inertia.
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This is a good point, and I had thought about it...but wouldn't this come into play more in comparing a 7.3 litre 8cyl to a 7.3 litre 3cyl of the same HP? That, and the 3cyl not having quite the RPM potential.
Quote:
Originally Posted by IHCbigjohn
What is it rated at originaly?
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Original rating on my tractor was 45hp. The 5300 has the same engine/injection pump with different fuel settings making around 55hp. I estimate that mine is making 55-60hp with current injection pump settings.
Here are the injection pump model numbers:
5200 (45.6hp): Lucas/CAV DPA2-3239F200W
5300 (55.9hp): Lucas/CAV DPA2-3239F210W
5400 (turbocharged-68.4hp): Lucas/CAV DPA2-3239F220W
Deere Industrial (turbocharged-79hp) Stanadyne DB4327-5
On a side note, Deere put 1.378" diameter wrist pins on the naturally aspirated engines and 1.614" diameter wrist pins on the turbocharged models.
While some say that the N/A engines shouldn't be turbocharged due to "undersized" wrist pins...I have to believe the increased wrist pin size was only done because these engines are also sold for generator and marine applications where they will see constant load and RPMs.
Thoughts...Ideas???
Thanks,
Phillip
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06-04-2012, 12:03 PM
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#7
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Name: LReiff
Title: The Antistock
Status: Not Here
Join Date: Apr 2009
Location: Newburg, PA
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Posts: 9,201
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My personal thought, opinion and idea.
Thought...it's a little farm tractor so a few extra ponies could be cool, but more than 60-70 hp is probably not ideal considering the trans will probably start to suffer.
Opinion...the engine will likely die early at near triple the HP rating.
Idea...buy an old 4020 deere and hop it up, go have fun at the local tractor pulls!
I'm pretty sure that is a Yanmar engine, not a genuine Deere, however I could be wrong about that.
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Lee
Quote:
Originally Posted by 4x4dually
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Last edited by LReiff; 06-04-2012 at 12:05 PM.
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06-04-2012, 12:16 PM
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#8
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Name: Atchley
Title: Holler dweller
Status: Not Here
Join Date: Feb 2008
Location: East Tn
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Posts: 4,775
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Quote:
Originally Posted by LReiff
My personal thought, opinion and idea.
Thought...it's a little farm tractor so a few extra ponies could be cool, but more than 60-70 hp is probably not ideal considering the trans will probably start to suffer.
Opinion...the engine will likely die early at near triple the HP rating.
Idea...buy an old 4020 deere and hop it up, go have fun at the local tractor pulls!
I'm pretty sure that is a Yanmar engine, not a genuine Deere, however I could be wrong about that.
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I'm going with yanmar too. My deere has one.
__________________
Jesse
15 F250
95 twelb valb
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06-04-2012, 12:55 PM
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#9
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Name: kentuckydiesel
Title: Rookie
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Quote:
Originally Posted by Atchley
I'm going with yanmar too. My deere has one.
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Nope, this is a JOHN DEERE engine.
Powertech 3029...smallest engine Deere makes. No offense to those who have them, but I wouldn't have bought the tractor if it was a Yanmar engine. See below link:
Industrial Diesel Engines on Product Finder from John Deere
I also would have never would have purchased a little 45hp tractor, but this one is the same platform (transmission, axles, etc, etc) as the 5510 and 5520, both of which had 89hp. The only difference was the fact that they had the Powertech 4045 4cyl rather than the 3029 3cyl (along with a larger radiator, longer MFWD driveshaft, longer hood, and a slightly bigger fuel tank).
Breakage at a bit over 100hp should be a non-issue.
We used to have a 1970 4020 and I loved it. I would have bought another one, but my place is very hilly so I needed something lower to the ground with MFWD that I could widen like crazy to keep me from going wrong side up. Current tractor sits 8' 2" wide with 18.4-26 "rice and cane" rear tires. It will climb/push/pull just about anything even as it sits now.
-Phillip
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06-04-2012, 01:01 PM
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#10
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Name: kentuckydiesel
Title: Rookie
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Been clearing 20-30yrs of cedar growth...just pushing it down the hill with the bucket.
-Phillip
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06-04-2012, 01:14 PM
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#11
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Name: GOT-Torque
Title: is
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Join Date: Jul 2007
Location: Falls City, NE
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Posts: 5,284
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how many head bolts per cylinder? How does it compare to your 7.3?
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"Enjoy the little things in life, because one day you will look back, and realize they were the big things"
EATSOOT.com
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06-04-2012, 03:14 PM
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#12
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Name: kentuckydiesel
Title: Rookie
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Quote:
Originally Posted by GOT-Torque
how many head bolts per cylinder? How does it compare to your 7.3?
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7.3 has (17) 1/2" bolts per head (4.25 bolts per cyl)--torqued to 95 ft lbs
Deere 2.9 has (14) 1/2" head bolts (4.67 bolts per cyl)--torqued to 110 ft lbs
All said, with the number of head bolts at higher torque, the 2.9 ought to be able to hold more boost than the Powerstroke. The head is a heck of a heavily built piece.
Also, I found out that Deere has basically the same size exhaust valves as the Powerstroke (deere:1.69, Powerstroke:1.68), and it has LARGER intake valves (deere 1.85, powerstroke 1.68).
Hmm...
-Phillip
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06-04-2012, 03:23 PM
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#13
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Name: mikmaze
Title: Too Much Time
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Join Date: Apr 2009
Location: Fairfield NJ
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my 4 cyl JD motor is a bit higher compression than yours, and I was told to leave it alone and be happy, or mess with it and be ready to fix it. I have a 91 1070 for food plot work.
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04.5 Qcab shorty EVIL TWIN CP3's 100 % over nozzles, ats 3 piece, HTT 64 71 13 ss over S480, arp's , GOEREND , Hamilton 181 210 & valve springs, UDC beta
2006 Liberty CRD w/ GDE eco
'91 JD 1070 dzl
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06-04-2012, 03:24 PM
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#14
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Name: GOT-Torque
Title: is
Status: Not Here
Join Date: Jul 2007
Location: Falls City, NE
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Posts: 5,284
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Quote:
Originally Posted by kentuckydiesel
7.3 has (17) 1/2" bolts per head (4.25 bolts per cyl)--torqued to 95 ft lbs
Deere 2.9 has (14) 1/2" head bolts (4.67 bolts per cyl)--torqued to 110 ft lbs
All said, with the number of head bolts at higher torque, the 2.9 ought to be able to hold more boost than the Powerstroke. The head is a heck of a heavily built piece.
Also, I found out that Deere has basically the same size exhaust valves as the Powerstroke (deere:1.69, Powerstroke:1.68), and it has LARGER intake valves (deere 1.85, powerstroke 1.68).
Hmm...
-Phillip
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I just did a quick google search for images of headgaskets and it looks like both use 6 per cylinder (some are shared between cylinders).
I say go for it...
__________________
"Enjoy the little things in life, because one day you will look back, and realize they were the big things"
EATSOOT.com
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06-04-2012, 03:24 PM
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#15
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Name: jeremy153624
Title: Too Much Time
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Location: Northern KY
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1990 Ford F350 4x4, 1994 12 valve swapped in, zf 5 speed tranny, ceramic dual disk from ky clutch, he351 turbo, 181 dvs, 4gsk, timing, and studded
1998 VW Jetta TDI, bone stock, 44 MPG on its worst day
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06-04-2012, 03:28 PM
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#16
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Name: Red Sleeper
Title: Too Much Time
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Location: Lone Star State
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Posts: 4,597
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Very interesting..
Subscribed.
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Nick J
'14 Silverado LTZ 5.3 4wd
'05 Cummins QCSB 4wd 48re
'91 Cummins w350 5spd
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06-04-2012, 05:41 PM
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#17
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Name: kentuckydiesel
Title: Rookie
Status: Not Here
Join Date: Jun 2012
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Posts: 20
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Quote:
Originally Posted by mikmaze
my 4 cyl JD motor is a bit higher compression than yours, and I was told to leave it alone and be happy, or mess with it and be ready to fix it. I have a 91 1070 for food plot work.
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Thats actually a Yanmar 4TN84 in your tractor. Should be a fair difference between the inherent strength of the 400lb yanmar 1.9 liter and the 700lb deere 2.9 litre engine. Top factory hp rating on the yanmar was about 43...top factory HP rating on the deere was around 79
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06-04-2012, 06:16 PM
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#18
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Name: LReiff
Title: The Antistock
Status: Not Here
Join Date: Apr 2009
Location: Newburg, PA
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Posts: 9,201
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Does the deere motor have an internal balance shaft?
__________________
Lee
Quote:
Originally Posted by 4x4dually
If anyone thinks the internet is serious they should seriously log off and burn their laptop.
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06-05-2012, 08:16 AM
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#19
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Name: kentuckydiesel
Title: Rookie
Status: Not Here
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Quote:
Originally Posted by LReiff
Does the deere motor have an internal balance shaft?
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The crank? They say it is dynamically balanced.
-Phillip
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06-05-2012, 08:56 AM
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#20
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Name: LReiff
Title: The Antistock
Status: Not Here
Join Date: Apr 2009
Location: Newburg, PA
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Posts: 9,201
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Quote:
Originally Posted by kentuckydiesel
The crank? They say it is dynamically balanced.
-Phillip
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Yes.
Does it also have balance shafts?
__________________
Lee
Quote:
Originally Posted by 4x4dually
If anyone thinks the internet is serious they should seriously log off and burn their laptop.
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