#132149, "RE: How bad is this cylinder scoring?" In response to Reply # 0 Oct-29-10 04:13 PM by itsaslow95
Measure the cylinder for out of round. can you feel it the "scores"
to me it looks like scuffs from the piston skirt, due to too small of a skirt clearence, usually caused by rapid expansion. may i ask why you disassembled it?
-Jason
--------------------------------------- most posts are done from my iPhone please excuse my typos
95 eclipse gs turbo - parting out 2004- dodge dakota 2006 lancer with a fancy wing and really expensive brakes.
~Naturally Aspirated then Pressurized~ Streetworksautomotivetuning.com <~ best friend's shop SUPPORT HIM!
#132156, "RE: How bad is this cylinder scoring?" In response to Reply # 1
OK...Thanks for the advise. I can't feel them. I'm returning the car back to stock. It was runing fine. I wish I would have checked the compression before I tore it down though.
Do you know what causes "rapid expansion?" To lean and got hot? Inadequate cooling system? I did not beat on this engine, at all. And I was really dissapointed when I saw this. I was hoping to sell it as a turn key 2.4. But if it needs rebuilt, I'll have to sell it as such.
Originally posted by itsaslow95 Measure the cylinder for out of round. can you feel it the "scores" to me it looks like scuffs from the piston skirt, due to too small of a skirt clearence, usually caused by rapid expansion. may i ask why you disassembled it?
#132157, "RE: How bad is this cylinder scoring?" In response to Reply # 2 Oct-30-10 07:57 AM by itsaslow95
Originally posted by micyek OK...Thanks for the advise. I can't feel them. I'm returning the car back to stock. It was runing fine. I wish I would have checked the compression before I tore it down though. Do you know what causes "rapid expansion?" To lean and got hot? Inadequate cooling system? I did not beat on this engine, at all. And I was really dissapointed when I saw this. I was hoping to sell it as a turn key 2.4. But if it needs rebuilt, I'll have to sell it as such.
Originally posted by itsaslow95 Measure the cylinder for out of round. can you feel it the "scores" to me it looks like scuffs from the piston skirt, due to too small of a skirt clearence, usually caused by rapid expansion. may i ask why you disassembled it?
If you cant feel it and measuring the bore confirms this as well there isn't anything to worry about. Its because the cylinders transfer their heat through the large cast iron block with coolant passages. The pistons however give off only a small portion of their heat. This means because metal expands when it's hot the pistons will expand before the cylinders. And you will get a scuffing on the cylinder wall. As long as the hole isn't out of round. Your fine. Drop a hone through it and most of the marks will go away.
-Jason
--------------------------------------- most posts are done from my iPhone please excuse my typos
95 eclipse gs turbo - parting out 2004- dodge dakota 2006 lancer with a fancy wing and really expensive brakes.
~Naturally Aspirated then Pressurized~ Streetworksautomotivetuning.com <~ best friend's shop SUPPORT HIM!
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