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Author Topic: Piston wear?  (Read 685 times)
gerg1962
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Location: Ferndale, WA

« on: October 28, 2011, 11:00:01 am »

I was inspecting things in the bottom end of my engine last night after removing the oil pan.  I had been chasing a noise that seems to be coming from the right cylinder bank towards the front.

The only thing I can see is that the skirt on the #1 piston shows some wear marks where as the others do not, they still show the milling marks.

I am uncertain if this means anything or not.  Do the piston skirts normaly rub against the cylinder walls?

Would this be indicative a bad wrist pin?  Too big of a piston?

For reference it is a '68 289 2bbl.  The engine had been rebuilt at some point as the pistons are stamped .030 on the top. 

Not exatly sure how long ago it had been re-built but I was able to see crosshatching on the cylinders when I had the heads off.

I had since put the engine back together after having the heads done and replacing all the lifters.  None of that cured the noise.

I was hoping I would not have to pull the heads off again but as it has been clearly stated I cannot get the piston(s) out or back in through the bottom.

Any thoughts?

As mentioned in other posts related to this, the engine runs strong and excepting this noise one would not know there is anything wrong.

Thanks,

Craig
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Joel5.0
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« Reply #1 on: October 28, 2011, 11:57:28 am »

Craig...... I know this is not what you want to read but....... do it right one single time. Take the rotating assembly off and inspect/check everything.
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gerg1962
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« Reply #2 on: October 28, 2011, 02:07:34 pm »

You are right Joel, that is not necessarily what I wanted to hear.

Maybe I can just dump in a quart of "engine rebuild in a can" and call it good.

JK (just kidding)
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