I know this is for f150 but you guys seem to know more than most its for a 98 eclipse. Well according to the mechanic it was tryin to throw a rod. Its knocking and tryin to overheat. Mechanic says all would need 2 b done is resurface the head and replace the gasket but if its "trying" to throw a rod would that mean its on it's way out?

 

Well it sounds like you have some rod knock. Is he planning to replace the rod bearings while the head is off?

 

resurfacing the head and replacing the gasket has nothing to do with rod knock. if you have a heating issue this 'may' fix that.

you would need to replace the rod bearings and have the crankshaft machined and rebalanced if there is damaged

edit:

motors for those cars are a dime a dozen now, it will cost you more to rebuilt the motor than to buy a complete swap and put it in. if you are capable of doing it yourself its a weekend job to do!

 

Ah, you may have a head gasket leak and all you're hearing is knocking (pre-ignition) and rod knock. Your mechanic may have just been speaking metaphorically. In this case, replacing the head gasket would take of the overheating, which is causing the engine to knock.

 

my first question would be is it standard? if so it could very well be a small warp in your cam shaft due to getting to hot and over revving it my buddy has had a few eclipses and he's managed to do this twice on them haha... not saying im right but wont hurt to check the specs on that cam if you have it half torn apart

 

If the head gasket is faulty water can leak into the combustion chamber when engine is hot and the steam knock is what you hear. Overheating and needing coolant would be part of the symptoms. Also the exhaust could have a steamy sweet smell. Pulling the bad head, resurfacing to remove bad spot and new headgasket and head bolts may cure your problem. Usually a head gasket will blow between cyls. but the new engines with stretch bolts are something of a different horse. They can stretch over a millimeter in length become thinner in diameter and release tension on the head to block integrity of the head gasket. Maintenance could be in order here. If you have to pull the head and water is your culprit your piston should be shiny clean on top from a good steam clean of antifreeze busting hard on it.