Engine broken: What should I do?

Medali

Medali

TJ Enthusiast
Joined
May 11, 2018
Messages
125
Location
Tunis, Tunisia
Huge disappointment.
After my first real trip off road, I was very happy to discover the Tunisian desert with my jeep, and it was during the return trip that I started to hear a weird noise coming from the engine. I did not stop and I continued my way until the engine stopped abruptly and that's when I realized the seriousness of the situation.
Final assessment, broken piston, and a huge hole in the engine block.
According to the expert, the engine block can be welded and the engine repaired.
What do you think...? Is it wiser to look for another engine or to take the risk of repairing my own engine knowing that the repair will cost me about 30% of the price of a spare engine ...?
e6c4fb5df5ecf12f65bbfce4967ddfcd.jpg
6a4297951dad333970da77a0c47f5f10.jpg
5027068f6c9bcfab058b0e5776b6c825.jpg
f1497754e4251f22996e6bb835ca7f53.jpg


Envoyé de mon MHA-L29 en utilisant Tapatalk
 
That suck, not many tow companies there for you...replace the block, crank, rods and pistons. I would use a 4.2 crank and rods with 4.0 pistons and build a 4.6 stroker or go over to jeep strokers and order one from the guy on there. Extra 50-60 horsepower. Tim
 
  • Like
Reactions: KCsTJ and Medali
astjp2 said:
That suck, not many tow companies there for you...replace the block, crank, rods and pistons. I would use a 4.2 crank and rods with 4.0 pistons and build a 4.6 stroker or go over to jeep strokers and order one from the guy on there. Extra 50-60 horsepower. Tim
Click to expand...
The good news is that the engine dropped me out of the desert... on the way home ... So I was very lucky on this point.

Envoyé de mon MHA-L29 en utilisant Tapatalk
 
  • Like
Reactions: dudehitt and 05 Blue Unlimited
Here in the U.S. you can get a remanufactured complete 4.0 engine for around $1800-$2500. Labor for installing it would probably cost around $1500 give or take, unless you installed it yourself.

I put a refurbished 4.0 in my old XJ and paid $1800 for the engine and did the swap myself over the period of 2 weeks.
 
  • Like
Reactions: TJ Starting
Chris said:
Here in the U.S. you can get a remanufactured complete 4.0 engine for around $1800-$2500. Labor for installing it would probably cost around $1500 give or take, unless you installed it yourself.

I put a refurbished 4.0 in my old XJ and paid $1800 for the engine and did the swap myself over the period of 2 weeks.
Click to expand...
In Tunisia, it is very rare to find a Jeep 4.0 engine ... But the advantage is that the workforce is not as expensive as in Us or in Europe ...
But I would like to be reassured that an engine repair can be successful and that I do not risk falling into the same case after only a few weeks or a few months ...
View the photos, do you think this engine can be repaired ...? Can I still trust this engine ...?

Envoyé de mon MHA-L29 en utilisant Tapatalk
 
Medali said:
In Tunisia, it is very rare to find a Jeep 4.0 engine ... But the advantage is that the workforce is not as expensive as in Us or in Europe ...
But I would like to be reassured that an engine repair can be successful and that I do not risk falling into the same case after only a few weeks or a few months ...
View the photos, do you think this engine can be repaired ...? Can I still trust this engine ...?

Envoyé de mon MHA-L29 en utilisant Tapatalk
Click to expand...
I would get someone from the states to send you a block. It is too hard to properly braze a block and have it sound. If it was aluminum, you would be good but since it is cast iron, it is a last resort repair.
 
astjp2 said:
I would get someone from the states to send you a block. It is too hard to properly braze a block and have it sound. If it was aluminum, you would be good but since it is cast iron, it is a last resort repair.
Click to expand...
Thank you for the advise... Now I have more doubts about a possible repair of my engine...

Envoyé de mon MHA-L29 en utilisant Tapatalk
 
If you just were to repair this engine like you said, and not do a complete overhaul, whatever caused it to go bad in the first place may not be addressed and it could just happen again. And as astjp2 said, its pretty hard to get it closed up and repaired properly. Good luck, and hope you find a solution.
 
  • Like
Reactions: Medali
Well you can do a junkyard block, which would be easy for customs, or you can get an overhauled engine, or if you are able, fly to the states, build your own engine and then ship it home.
 
  • Like
Reactions: Medali
In order to know if your existing engine can be re-used, you need to get the engine out of the vehicle and have it inspected by a reputable mechanic who knows what they're doing, or a very good machine shop. They'll be able to tell you if your engine can be rebuilt or if it's toast.
 
  • Like
Reactions: Medali
I have welded up many aluminum engine blocks over the years. On an aluminum race block that’s a pretty common thing to do, I have never welded up a cast iron block or even heard anyone recommend doing so. Cast iron can be welded but it’s fairly difficult and is prone to cracking around the welded area. I would think finding a used block and having it shipped would be a much better idea.
 
  • Like
Reactions: KCsTJ, Allstar424, Jerry Bransford and 1 other person
I just found an old engine on sale. The storekeeper says it's a 6-cylinder Jeep 4.0 engine, but I'm not sure it's a wrangler engine or not ... I just took pictures to check that it works well with my car.
I need your help and your know-how to recognize if this engine is compatible or not with my car ... Thanks in advance
894d59b78fcbafee1ba9fb2377b199b7.jpg
20648d5600e77916c01b8b3a8dd5e677.jpg
354e496450911a2158c8c005b941e121.jpg
1c7825d2f836bc1a7241eecfd8cb1946.jpg
cab9ead47d45f72a01ad90b3b7e94b07.jpg
76c7fe70705b802f43f7884d11f7f5c4.jpg
4bde816bc6399699cde66ac7516a55da.jpg
7b22db0eebb4388e65f4cc943b28b4a1.jpg


Envoyé de mon MHA-L29 en utilisant Tapatalk
 
If anyone can recognize this engine, please give me information. Otherwise, if someone knows a website where we could enter the bar code numbers of this engine to detect it thank you for helping me
ad472796eabd9eaa7819860241412d2a.jpg
91f8eb466fe4043eec59cedb74ba723c.jpg


Envoyé de mon MHA-L29 en utilisant Tapatalk
 
Welding cast iron is iffy even for an experienced welder. I personally would not consider a cast iron weld repair.
 
According to the research I have done on the internet, this engine corresponds to that of a Grand Cherokee jeep from 1991 to 1995 (if I'm not mistaken). Does anyone know if it is compatible with my 2002 wrangler ...? Is it easy to install and is it as efficient as an original engine ...? thank you in advance for your return.

Envoyé de mon MHA-L29 en utilisant Tapatalk
 
It's the only Jeep engine available right now at used parts stores, and it's not expensive so I would not buy it and after it does not work with my vehicle.

Envoyé de mon MHA-L29 en utilisant Tapatalk
 
It will work. A 4.0 is a 4.0 in that respect. You have all the parts that may differ still ready to go on your engine. But the block, crank, etc are all interchangeable. The heads may differ, but will all bolt up. Easy peasy. Just be sure why the G.C. engine was pulled is fixed too.
 
Goatman said:
It will work. A 4.0 is a 4.0 in that respect. You have all the parts that may differ still ready to go on your engine. But the block, crank, etc are all interchangeable. The heads may differ, but will all bolt up. Easy peasy. Just be sure why the G.C. engine was pulled is fixed too.
Click to expand...
Thank you for your advices [emoji846]

Envoyé de mon MHA-L29 en utilisant Tapatalk
 
I agree, looks like this engine should work. Ideally you should buy that engine, and use it as a donor to your engine. The 4.0 stroker websites have a lot of information regarding the different year blocks,heads,etc. and which are the best. This is a good website: http://www.angelfire.com/my/fan/stroker.html

For example take the block from this donor engine, use the head from your old engine (inspect it first obviously) because the head from newer jeep engines is typically better. I recommend doing new crank/cam bearings, new camshaft, freshen up the engine while you have it out. New lifters on the head, definitely. New oil pump, new water pump - The old engine blew up for a reason. Check all your piston rods and balance them, since the piston was damaged. Maybe take the pistons and rods from the donor engine. Otherwise keep as much as you can from your jeep's engine since the sensors and electrical will match right back up easily.

If you can get the replacement parts to freshen up this engine where you are, then a fully rebuilt 4.0 will last you until the jeep falls apart. Also make sure you have a guy doing the rebuild who understands engines! The 4.0 is not a very complicated engine.
 
Top Bottom
Back