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Guest Message by DevFuse
 

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noise and cant find problem sloving.


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16 replies to this topic

#1 Suba_GL_87

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Posted 21 October 2012 - 01:08 PM

1996 EJ25 dohc 208K
when i was replace o-ring of fuel injection...
somehow got bad noise...
VVVVVVVVVVVVVVVVVVV


so, im decide pull out the engine and see nothin damage bore and pinions.
VVVVVVVVVVVVVVVVVVV


i dont understand why and i dont want put engine on it and get noise again.
please help me.

#2 uniberp

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Posted 21 October 2012 - 01:19 PM

Rod knock, even when you spin it by hand I hear it. I think.

I belieive it is much more common in these engines than any enthusiast would like you to believe.

I hope the rebuild market has figured out how to cost-efficiently build thee bottom ends. It's not something I can spend the time learning.

#3 Idasho

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Posted 21 October 2012 - 01:31 PM

So what normally causes it? Worn out rod bearings or are the caps stretching?

#4 uniberp

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Posted 21 October 2012 - 02:07 PM

So what normally causes it? Worn out rod bearings or are the caps stretching?



I believe it is normal to reusing rods and caps in rebuilds, with undersize bearings and a crank grind if necessary. Out of round journals are the most likely culprit, IMO. The 2.5 pack quite a punch on a short stroke.

Splitting and re-splitting the cases and "plastigage"-ing the journals seems like a half-baked way to rebuild these. It would either take some crazy high tech micrometers or a perfect touch , neither of which I have.

With the case bolts threaded into aluminum, the bolt stretch may have to be done merely by expert hand.

#5 Suba_GL_87

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Posted 21 October 2012 - 02:19 PM

i found it... -_-

Edited by Suba_GL_87, 21 October 2012 - 03:00 PM.


#6 Suba_GL_87

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Posted 21 October 2012 - 02:55 PM

Hydrolock.... I dont know how to put back. :popcorn:

end of tread.

Posted Image
Posted Image
Posted Image

#7 nipper

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Posted 21 October 2012 - 03:12 PM

ouch

:popcorn:

#8 Suba_GL_87

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Posted 21 October 2012 - 03:31 PM

trouble.
+1

ouch

:popcorn:



#9 uniberp

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Posted 21 October 2012 - 03:38 PM

Which cylinder is that?

#10 nipper

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Posted 21 October 2012 - 03:46 PM

Which cylinder is that?


the one making the noise


hehehe

#11 uniberp

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Posted 21 October 2012 - 07:50 PM

the one making the noise


hehehe


Don't be so sure. That might be the best one in there. ;)

#12 Suba_GL_87

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Posted 23 October 2012 - 03:58 PM

number 4

Which cylinder is that?



#13 Suba_GL_87

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Posted 23 October 2012 - 05:25 PM

Just question.
if i repair new ONE connecting rod.
should be OK with old piston and bearing connecting?
before i sell this car.

#14 Suba_GL_87

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Posted 24 October 2012 - 06:56 PM

i need your answer...

#15 Fairtax4me

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Posted 25 October 2012 - 09:16 AM

It looks like the piston was hitting the bottom of the bore? The piston is damaged, the block is damaged. It's toast.
Drop a 2.2 in it and save yourself some trouble.

#16 nipper

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Posted 25 October 2012 - 09:58 AM

I'm not seeing an impact mark. Yes you can replace just the one connecting rod/psiton/bearing assembly.

#17 Suba_GL_87

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Posted 26 October 2012 - 02:15 AM

mmm, Im still dare get one new rod before installed. I need Try to sell it.
only used 50miles of Fel-Pro head gasket.
old piston and rod's bearing.

96' Ej25 DOHC is old sh*t...

you think Ej22 can fit with automatic from Ej25? doubtfully...?

Edited by Suba_GL_87, 26 October 2012 - 02:24 AM.





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