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Rod Knock after Hg rebuilt ?


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now that i think about it, it had a very slight knock when i started it for the first time, it was more like a clicking, so i figured maybe a lifter or something, didn't think it was serious, why would the car stall and have no spark tho ? i have to limp this home after work
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Uhhhh... That doesn't entirely make sense. But, I believe your trying to say that you replaced the head gaskets on a 2.5 and then drove it for a while (how long?) and then you developed a rod knock?

 

If so...

 

I believe I remember that you got this 2.5 from an OB parts car and it cam with blown head gaskets?

 

If this is the case, the PO more than likely drove the car for a while with the gaskets blown. Happened to my 2.5 after I replaced gaskets. I had driven it for 4 months with blown gaskets.

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Bearing can go bad because of the intense and constant overheating... I ended up just tearing my motor down and taking off the good parts. The internals are pretty much useless as the cost to fix everything is just not worth it.

 

What year EJ25 is it? how many miles?

 

Lifters can start to click as they get older because the adjustment starts to get out of spec. You might also be hearing a knocking noise from a missfire. Check out all of the plug wires and make sure that they are on properly.

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i was driving like 30 mph then the car died, pulled over no spark, and then started it and notice it was knocking, died again after reving it, could that be something ? i didnt have spark the one time i checked then it came back, is it maybe timing, and pre ignition
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Honestly, right now I would check to make sure every one of your electrical connections and all of the other hoses and whatnot under the hood are properly connected. Are you using the 2.5 or 2.2 ECU? Did you swap over any electrical parts from the OB to your car?
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That is what happened to my 25D. It overheated a few times under the previous owner, she ended up getting head gaskets done w/shaving the heads but the bearings lose their integrity after being overheated consistently & pop went rod #3. It's almost a guarantee that you will get a CEL for misfiring if one of your rod bearings are going. I'd go onto your original idea of installing an EJ22 in. You'll never have to worry about that again. Check your wiring harness for compatibility. I used a 95 22E & found that the harness was not compatible with my 98 GT.
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BAM! #3 is exactly the one. The thrust bearing, if I'm not number dyslexic today...

 

And yes, just put the 2.2 back in. And if you're feeling adventurous, install the 2.5 heads on your 2.2 just like DOCH here did.

 

BTW, I've been too lazy to think and post a reply in your motor hybrid thread..

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well ladies and gents, Blew the motor on the way home, I have video of it knocking a it blew, man of man it wa loud, number 3 rod it was ( driver side rear) haha, as if !

 

so il have to see if the harness' are compatible, il be posting the video

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Harness compatibilty of the 95, 2.2 motor into a 97, 2.5

 

They may not be compatible but it doesn't hurt to try. Plus if they aren't, just put your 97 harness on the 95 22E & it will fire right up just fine. Just make sure you keep your knock sensor on the harness because the connector will be different than that on the 95's. The camshaft/crankshaft sensors should be exactly the same. Is your car an auto?

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the wiring harnesses may have a few, slight changes but nothing to keep the car from running as long as the harness is macthed to the ECU it came with. but i don't think there are any. some changes were made in 98.

 

the 95 ej22 with EGR (usually from an auto trans car) is the preferred engine for a swap into a 96 - 99 outback. and the wiring harness is a non issue. other options for swaps are the 96 - 98 ej22 with EGR (usually from an auto trans car). 96 - 98 ej22s will will require the exhaust manifold that matches the engine.

 

and as long as the wiring harness matches the ECU that came with it the car you will have no problems with a harness matching the engine until the phase 2 engines were introduced. forester went phase 2 in 99, so did all the ej22s. but the outback and GT didn't change until 00.

 

virtually all of the parts on the outback chassis and engine will bolt on to and work with the ej22, 95 - 98. such as sensors (cam, crank ,coolant temp, oil pressure, o2s are the same but the 95 has a different connector for one of them), alt, AC, PS pump, plastic intake plenum, exhaust all swap easily. there are a few changes that take place but very few. so the old ej25 is a great parts engine for the ''new'' ej22.

 

things that will not swap, or will not swap easily, intake manifolds, engine internals, heads will but you have to be careful. timing belts are different but the water pump, and all idlers are the same.

 

flex plates are different and they have to match the trans that came with, is in, the car so you just swap them. no issues about matching the trans, auto or manual.

 

do a search, ej22 swap, there is lots of info. i have done 2 of these. a 96 ej22 into a 97 GT and a 95 into a 98 outback. it is easy, more reliable, and usually cheaper than a replacement ej25.

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Thanks John!

 

So Exhaust manifolds are different, and the flexplate will have to be swapped ? and also if i take the ecu from the 2.2 and keep it with the motor, i can swap it out too

 

il do this in the spring, il get the winter out of my 95, since my studded tires only fit the 14'' and it also has a hitch for my sled trailer

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95 ej22 exhaust manifold is the same as the 96 - 98 ej25. the 96 - 98 ej22 has a different one.

 

no need to swap the ECU. keep the one that is in the car and the ej22 will run fine. if you have the ecu that came with the engine you can try and swap it in, but you don't need to and i would not waste any money on it. and it is possible that the ecu may cause a cel. it just depends on when/ if they changed the ecu and harness.

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