Possible Rebuild Options

[CoyFish]

So I have a 1997 Eclipse GS-T Automatic. I was driving it one day and it over heated and started knocking. It then did not want to turn back on so I let it set for about a year. I decided to take the engine apart to find out if it is repairable or just needs to be replaced. I am very new at this and don’t really know what I am looking at or what to look for.

I will first start off with the head. It looks like nothing out of the ordinary no broken pieces no cracks other than a very small crack on the top of valve cover. Underneath the head valves look quite black (really burnt) but once again I don’t know what I’m looking at, if that is bad.

The block from what I can see right now looks pretty much like the underside of the head, really dark black. One the first cylinder (far left) there seems to be debris on top of the piston and a bit dark around the sides, compared to the other three cylinders not looking as "bad".

I was expecting there to be a piston sticking out of the back of the motor but thats not what I got. I would like to have it machined and rebuilt soon but know if it is possible.

My question is... WHAT NEXT. I will post pictures soon to help give you guys a better "picture". Thank you for your patience and if I sound like a dumb as who does not know what I am doing it’s because well........ I am a dumb ass who does not know what I’m doing
(IMG:style_emoticons/default/liebe011.gif)

[raveneon]

It's hard to determine anything without pics. Black on the valves is normal to a certain extent. When the car overheated did any strange color of smoke come out of the exhaust? If it's white then you blew a head gasket. If not then it's possible that your water pump quit functioning causing the overheating (heat can cause detonation) and the engine itself is fine. Although I would suggest a new head gasket and having the head machined just in case the heat warped it.

[Az3g]

getting the head machined and a brand new head gasket are a MUST once you've removed the head. the gasket may not have been bad... you could also have a cracked head. im most cases you cant tell. I know it costs a little more, but when you take it to be surfaced, have them do a crack test. they will defiantly suggest it when your there. No sense surfacing a head with a crack right? as for the heavy carbon deposits, it sounds like your running a little rich... but Id like to see those pics.

[CoyFish]

Thank you guys. There was smoke but not strange color or dark smoke. I will post pics tonight probably pretty late but check back and you can see what I see. Thanks again.

[CoyFish]

Got a few pics. I called a machine shop and they gave me a few options for the head. They told me I could have it checked for cracks $45, vacume tested $20,
resurface $40. valve job is $180. total $320 with valve seals plus tax. Tell me what ya think
(IMG:http://i173.photobucket.com/albums/w45/johndcoy/IMG00601copy.gif)
(IMG:http://i173.photobucket.com/albums/w45/johndcoy/IMG00602copy.gif)
(IMG:http://i173.photobucket.com/albums/w45/johndcoy/IMG00603copy.gif)
(IMG:http://i173.photobucket.com/albums/w45/johndcoy/IMG00604copy.gif)

[SRSONE]

have the head checked for warpage..mitsus warp if overheated...
check for cracks...if head is straight and not cracked have it resurfaced also valve job might not be needed...but seals changed after over heating would be a good idea...
but on the other hand if u have any kind of mech expierience.. changing valve seals u can do your self...the seals are easy too change and the head needs too be stripped any way... u can pay them too do it tho...

also u need too check the block for warpage also...it probably is ok (depends on how bad u overheated it tho...)

also timing belt,water pump..tstat.. any external sensors or components that could have melted..should be checked/changed

also.. knocking noise could be from rods or crank ..the oil pan should be dropped and check the crank and rods...

[CoyFish]

Thanks. I have not taken off oil pan yet but will do so along with removing the crank and having it check also. Thanks alot i will try and keep ya updated with it.

[BigJohnson9796]

have the head checked for warpage..mitsus warp if overheated...
check for cracks...if head is straight and not cracked have it resurfaced also valve job might not be needed...but seals changed after over heating would be a good idea...
but on the other hand if u have any kind of mech expierience.. changing valve seals u can do your self...the seals are easy too change and the head needs too be stripped any way... u can pay them too do it tho...

also u need too check the block for warpage also...it probably is ok (depends on how bad u overheated it tho...)

also timing belt,water pump..tstat.. any external sensors or components that could have melted..should be checked/changed

also.. knocking noise could be from rods or crank ..the oil pan should be dropped and check the crank and rods...

Anything with aluminum heads or blocks will worp if overheated not just mitsu