natole Posted January 3, 2009 Share Posted January 3, 2009 I Have two outbacks both have buruned exhust valves is this common or is it just my luck Thanks Link to comment Share on other sites More sharing options...
Skip Posted January 3, 2009 Share Posted January 3, 2009 very rare did someone adjust the valves before this happened? Link to comment Share on other sites More sharing options...
natole Posted January 3, 2009 Author Share Posted January 3, 2009 No but looks like the belt and head gaskit were done belt timing was right on i have not taken the other one apart yet but i thought i would try to do some home work Link to comment Share on other sites More sharing options...
subaru360 Posted January 3, 2009 Share Posted January 3, 2009 Not very common, I have only seen it once maybe twice, kind of foggy on that. Link to comment Share on other sites More sharing options...
Skip Posted January 3, 2009 Share Posted January 3, 2009 you are sure they are "burned" not bent? If the belt breaks you know I'm sure it can bend valves Also if the a cam moves while replacing the belt it can bend valves Link to comment Share on other sites More sharing options...
subaru360 Posted January 3, 2009 Share Posted January 3, 2009 Also if the a cam moves while replacing the beltit can bend valves I know it says that in the manuals, I know everyone on the internet says that. But not entirely true. If you put the crankshaft on the timing mark before you take the belt off, like you should be, you can spin the cams 360 degrees around and you will not bend the valves. I have done this many, many times. On the other hand, if you have the cams in a position where you have open valves and you move the crank, they will hit the pistons. Link to comment Share on other sites More sharing options...
Skip Posted January 3, 2009 Share Posted January 3, 2009 On the other hand, if you have the pistons in a position where you have open valves they will hit and you move the cam...... Link to comment Share on other sites More sharing options...
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