mellow yellow Posted July 25, 2008 Share Posted July 25, 2008 Took apart my 98 ej 25 for head gasket problem. I took a picture to show what I believe to be the cause. Note the wall thickness between cylinder wall and water jacket; 1/4 to 5/16 in.I Can't see any way this design can be reliable. Quote Link to comment Share on other sites More sharing options...
uniberp Posted July 25, 2008 Share Posted July 25, 2008 Oddly, it is. Or not so oddly. That same dimension is used on all later sube engines. Too great a thickness can cause too much heat distortion. Thinner is often better. The design problem with the 98 is the DOHC headgasket itself, I believe, not the block or the head. Took apart my 98 ej 25 for head gasket problem. I took a picture to show what I believe to be the cause. Note the wall thickness between cylinder wall and water jacket; 1/4 to 5/16 in.I Can't see any way this design can be reliable. Quote Link to comment Share on other sites More sharing options...
bheinen74 Posted July 25, 2008 Share Posted July 25, 2008 its a combo of the block design for sure. closed deck ej22T yay. Quote Link to comment Share on other sites More sharing options...
mellow yellow Posted July 26, 2008 Author Share Posted July 26, 2008 its a combo of the block design for sure. closed deck ej22T yay. I agree the open deck block is what the real problem is. Quote Link to comment Share on other sites More sharing options...
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