mbis
Member
Curious if anyone has any idea or a good estimate on what it would cost to have a complete engine rebuild on a John Deere 4200
4200 engine rebuild
- Thread starter mbis
- Start date
- Views: 13720
Gator6x4
Super Star Member
Parts and labor my guess is over $4,000. Parts alone would be over $1,000. Labor is expensive.
TimberHole
Platinum Member
- Joined
- Jul 17, 2017
- Messages
- 524
- Location
- Missouri
- Tractor
- JD9504WD w/ 75 Loader, JD345, Bobcat S150
I'd be very surprised if the parts bill is only $1,000.00. I just finished rebuilding a sleeved 3 cylinder Yanmar and the parts and machine shop bill was north of $2,500.00.
I'm not familiar with this engine bur a Google search leads me to believe this is not a sleeved engine. Anyone know for certain? Why do you think it needs overhauled? Whats it doing (or not doing)?
I'm not familiar with this engine bur a Google search leads me to believe this is not a sleeved engine. Anyone know for certain? Why do you think it needs overhauled? Whats it doing (or not doing)?
beenthere
Super Star Member
- Joined
- Aug 16, 2001
- Messages
- 18,616
- Location
- Southern Wisconsin, USA
- Tractor
- JD_4x2_Gator, JD_4300, JD_425, JD_455 AWS, added JD_455, JD_110, JD_X485(sold)
Not a sleeved engine.. according to the service tech manual
larboc
Silver Member
- Joined
- Nov 7, 2013
- Messages
- 233
- Location
- hancock, MI
- Tractor
- John Deere 4300, Deere 455, Ariens GT17, Cub Cadet O, Wheelhorse 50
Parts for my 4300 were around $750, machine shop charged $300 and they magnafluxed the head, ground the valves and seats, replaced valve seals, shotblasted and cleaned the head, bored+honed the block, replaced the cam bearings, cork polished the crank and measured it, replaced all the freeze plugs and cleaned the block, replaced the wrist pin pushers and honed to fit, then wrapped everything in shipping plastic. They didn't surface the top of the block, which I would recommend having done because of the way this engine is made after what I went through. I did all the work myself so I'm not much help on estimating that cost. It is a lot of work pulling the engine. Fuel tank has to be removed (sounds simple doesn't it?) and the tractor has to be split.
Parts and machine shop charges should be around ~$1250 total. If I had to guess on labor for someone doing it in their garage, 120 hours?
Not a sleeved engine, repair sleeves are available though if you are beyond .010
I'm curious what's wrong that's prompting the rebuild?
Parts and machine shop charges should be around ~$1250 total. If I had to guess on labor for someone doing it in their garage, 120 hours?
Not a sleeved engine, repair sleeves are available though if you are beyond .010
I'm curious what's wrong that's prompting the rebuild?
larboc
Silver Member
- Joined
- Nov 7, 2013
- Messages
- 233
- Location
- hancock, MI
- Tractor
- John Deere 4300, Deere 455, Ariens GT17, Cub Cadet O, Wheelhorse 50
Seeing bubbles in the reservoir tank?
Was the old headgasket bad? Was it loosing coolant? Have oil pressure?
A full engine rebuild would be a long way off for me if all I was dealing with was overheating. If you're not getting bubbles in the coolant or milky oil then I'd keep looking for the culprit. If you drain all the coolant out of the petcock in the radiator, take off the fan belt, and then idle the engine for a few seconds with your ear on the radiator cap you can hear a combustion leak to the cooling system very quickly.
Was the old headgasket bad? Was it loosing coolant? Have oil pressure?
A full engine rebuild would be a long way off for me if all I was dealing with was overheating. If you're not getting bubbles in the coolant or milky oil then I'd keep looking for the culprit. If you drain all the coolant out of the petcock in the radiator, take off the fan belt, and then idle the engine for a few seconds with your ear on the radiator cap you can hear a combustion leak to the cooling system very quickly.
Rebuilt my 4300 last year it ended costing me around 2000 , but I am in the process of changing out the head gasket again. Now as far as JD they charged me 1200 to tear it down the first time but not remove it from tractor. That did include towing. To rebuild the engine they wanted around 16,000 yes that is not a typo.I ended getting a rebuild kit from Maxine force.
dfkrug
Super Member
- Joined
- Feb 3, 2004
- Messages
- 7,706
- Location
- Santa Cruz Mtns, CA
- Tractor
- 05 Kioti CK30HST w/ Prairie Dog backhoe, XN08 mini-X
You had the machine shop do a lot. My last JD engine rebuild was maybe half that for machine work. Since
there is no .020" piston made, I was fortunate in that .010 cleaned up (barely) the wear I had from air
filtration failure. I did not change any bearing inserts on crank or cam as they were still in spec. You
can sleeve this engine, but that's a bunch more.
As for parts, I only bought piston/ring sets, a headgasket, and valve stem seals. Less than $500 for all that.
Most tractor shops do not want to do engine rebuilds. Just splitting a tractor starts at $1K or so for labor.
TimberHole
Platinum Member
- Joined
- Jul 17, 2017
- Messages
- 524
- Location
- Missouri
- Tractor
- JD9504WD w/ 75 Loader, JD345, Bobcat S150
When you had the head off did you have it checked for cracks? You didn't mention the water pump or radiator? What have you done there? With regard to overhaul, how is the compression and oil pressure? So far I haven't heard anything that indicates it needs overhauled.
I bought a tractor with an overheating issue and they had already done the head gasket. The problem ended up being an improperly installed head gasket. Just because the head gasket was done doesn't mean it was done correctly.
larboc
Silver Member
- Joined
- Nov 7, 2013
- Messages
- 233
- Location
- hancock, MI
- Tractor
- John Deere 4300, Deere 455, Ariens GT17, Cub Cadet O, Wheelhorse 50
It was a broken piston from overuse of ether due to not knowing about the thermistor issue for me. The bores weren't bad and I could have gotten away with just putting in a new piston, but by the time I was into it that far I went ahead and rebuilt the whole engine. Tractor has to be split to replace a piston anyway. liquid cooled yanmars will last a VERY long time if they aren't abused.
TimberHole
Platinum Member
- Joined
- Jul 17, 2017
- Messages
- 524
- Location
- Missouri
- Tractor
- JD9504WD w/ 75 Loader, JD345, Bobcat S150
Did it smell hot? Could just be a sensor but probably not. Nothing you've said indicates to me that it needs an overhaul. In my limited experience most overheating issues on the little Yanmar's are head or head gasket issues. The head probably should have been checked while it was off. If you're not a mechanic I recommend finding a local mechanic familiar with the little Yanmar's and let him diagnose.
deserteagle71
Elite Member
- Joined
- Dec 30, 2017
- Messages
- 2,727
- Location
- northern Nevada
- Tractor
- John Deere 2020 diesel, Kubota M7060HDC12
That sounds about right, from John Deere! Last October I called a John Deere dealer up in Idaho about having the engine in my 2020 diesel rebuilt...the service manager told me it would run $15,000 - $20,000 depending on what they had to do. This for a tractor I paid only $7,000 for, 21 years ago!
larboc
Silver Member
- Joined
- Nov 7, 2013
- Messages
- 233
- Location
- hancock, MI
- Tractor
- John Deere 4300, Deere 455, Ariens GT17, Cub Cadet O, Wheelhorse 50
Did coolant spill out? Will it cool off if you bring it back to idle? Have you check for bubbles in the radiator cap at idle? Fan belt tight? Inspected the waterpump to make sure something isn't screwed up with the vanes?
When the headgasket went on mine (long story) I was smelling coolant blowing out the reservoir bottle while working it hard with a flail mower a long time before the temp gauge started moving.
