Indrid cold Posted March 17, 2012 Share Posted March 17, 2012 (edited) EA-82, been sitting for awhile with bad head gasket (s), not mine and not a mechanic. noted the heads which sat with coolant in them has a bit of an etched surface where it pooled in bottom of head... The guy I am doing this for (old mechanic) said to polish with fine grit and put it back together... so I did. Heads machined. New Felpro gaskets and his car so his call. what is the past experience with this... anyone? Possibly I could have used a cylinder hone on it? This is more of a country rig... so his concern factor is low about any effect I guess but I wanted your input as I always learn from doing and curious what others would do, done with this issue. Edited March 17, 2012 by Indrid cold Quote Link to comment Share on other sites More sharing options...
czny Posted March 17, 2012 Share Posted March 17, 2012 I have 2 vehicles both running just fine with coolant stains in the cylinder walls - my 87 GL(EA82) & my 65 chevy p/u(sbc 350). I was told by my auto machinist that the etching effect of coolant is OK as long as there is no pitting. He told me that even after reboring cast iron blocks stains can still be seen. What matters is the piston to cylinder wall clearance & if high mileage that the piston skirts haven't collapsed. Scuffing up the stain with scotchbrite is OK - honing just to remove the stain is unnecessary. Always put a shop rag on top of piston before cleaning the bore. Have a great day! Quote Link to comment Share on other sites More sharing options...
ivans imports Posted March 17, 2012 Share Posted March 17, 2012 The piston comes out fairly easy then can gentaly hone it make shure you put a rag in it keep junk out and wash it good after. Quote Link to comment Share on other sites More sharing options...
GeneralDisorder Posted March 17, 2012 Share Posted March 17, 2012 It's an EA82 - run it till it blows up. Not a serious problem. I've seen this on many engines with failed HG's. Doesn't seem to affect them much. GD Quote Link to comment Share on other sites More sharing options...
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