Will this work?

[MakeItHappen]

I found this posting on craiglist

"2.0 mits. engine. rod knock. car ran great but lost oil due to leak. many parts on engine still good head,starter,intake,throttle body,injectors,alternator,engine control module. will sell all or part out. also have new brake parts drums shoes new timing belt.call for price ***-***-****"

Im buying a 96 eclipse with no engine that needs a 420a,
I believe the 2.0l is the 420a but correct me if im wrong,
I would throw new parts in it and clean it up but what would be the
rod knock problem? And would these engine fit a 96 rs and
could i get it running properly



Picture of The engine

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[Talon IV]

Well if you are buying an RS then the 420A is the 2.0 you will be looking for. The GST, GSX, TSi, and TSi AWD had the 4G63 2.0 turbo. That engine looks like what you need but if it has rod knock then it probably needs a whole bottom end rebuild to be safe. And as always if you bought it, I would perform a cylinder leakdown test to check the head as well.

 

[MakeItHappen]

what exactly is a rod knock and how hard would it be to fix it,

 

[Tyeler18]

The bearing on that rod spun effectively detroying that crank journal. You're looking at a full bottom end rebuild assuming the.damage was caught before it destroyed the crank. Unless he's asking like $100 and you have the funds for another $500-1000 minimum rebuild its junk.

 

[gusu]

what exactly is a rod knock and how hard would it be to fix it,

For you, it's a money pit as you don't know even the basics yet.

Sure you COULD rebuild the motor yourself the first time correctly IF you read everything you need to and do it 100% correctly. First thing you'd need to know is there are zero short cuts when working on cars. If it seems too easy, it is. You are going to break more shit from trying to be cheap or save time. You'll end up having to do it all over causing you to spend more time and energy on it.

As for your question. I'll actually answer it though you can find it on here easily. Rod knock is typically caused from poor lubrication (low oil) or over heating from running low coolant, a blown head gasket, or running no coolant at all. Typically the bearings will start to fail resulting a knocking sound from the rods basically shaking within the cylinder causing scaring on the block and damaging the pistons. Eventually this can lead to throwing a rod among other things.

Do you want that motor? No.

Would that motor fit? Yes, but you don't want it.

The RS, GS (Except for the 99 model), and base model that was literally just called "Eclipse Hatch" and had no trim level all came with the 420a in the second generation Eclipse/Talon. The 99 Eclipse GS (no Talons were made in 99) came with a 4g63 as a special edition (Kind of like a farewell to the motor, 2g, AWD, and Turbo cars). The GST/GSX came with the 4g63T motor (T obviously for turbo).

If you are looking for a fun car to own, don't get a nonturbo DSM. You can mod them, but by popular opinion it's not worth it if you are looking for horse power. Plus in the long run a factory turbo DSM will be cheaper. It all seems like you are new so it should be quite a bit easier to learn as the information regarding the 4g63T motors is much more abundant as way more people do serious modification to them.


As for the repair of rod knock, it's long, extensive, and would be several threads of information in itself to ever be able to tell you in one simple reply how to fix it.

What are you wanting to do with this car anyway? You seem young. If that is the case keep in mind, when you make more power you break parts a lot more often. Expensive parts as well, those repairs also take time... lots of it if it's your first time. If you need a reliable car that will be sort of fun with low risk of breaking things I'd honestly suggest something more along the lines of a Honda. Sure the 420a is reliable, but the Eclipse is also heavy for the amount of power it puts out. The reason so many people love Hondas is simple, they are light, reliable, get amazing gas mileage, and produce a decent amount of horse power for the size of the motor, personally I think 160hp from the SI's 1.6L B16 was great for 99-2000 when it came out in the US.

I'd suggest reading... a lot.

 

[deflator]

what exactly is a rod knock and how hard would it be to fix it,

This post means it will be nearly impossible. Find a car in good condition if you want to learn how to work on them, then you can learn slowly.

 

[evoeatr]

not knowing a whole lot about dsms it would definately be in your best interest to find a car thats running. it gives you more to work with and you actually get to enjoy the car as you learn more about it. i learned the hard way. i bought a shell and tried to build it from the ground up before i really knew anything and i lost motivation really fast, simply because you dont know what its like to drive the car so you have no drive to drive the car. especially when you find out how much money its going to take to do it right. 4g63t is definately the way to go if you want to get deep into the dsm game

 

[MakeItHappen]

So a rod knock is a spun bearing?
Ive taken a jeep with a spun bearing and put in a new motor with parts from the old and that has been on the road for two years,

i dont want a turbo engine because of the maintanence and because of the horsepower,
that and i have found parts cars with running engines and a wrecked rear end for $300-$500,
420a is honestly cheaper to build and i have a slow budget, yea slow meaning i can make $200-$250 every 2 weeks but i have no bills

not really looking for that horse power

 

[evoeatr]

then make it happen! i have nothing against them. and yea youll get rod knock from a spun bearing but there is a few others things that can cause it. maybe a bad wrist pin from rod to piston or possibly even really worn bearings. its not unreachable to get this motor going but jus take your time and do things right or your going to be running in circles

 

[unplugged]

Well if you are buying an RS then the 420A is the 2.0 you will be looking for. The GST, GSX, TSi, and TSi AWD had the 4G63 2.0 turbo. That engine looks like what you need but if it has rod knock then it probably needs a whole bottom end rebuild to be safe. And as always if you bought it, I would perform a cylinder leakdown test to check the head as well.

I prefer not to walk into something with problems like that unless you got it dirt cheap.