An idea for the head oil leak
Posted: Fri Jan 14, 2011 2:39 am
Well, guess you all know what I am talking about. Considering why only the top O-Rings leak but never the bottom ones I thought the problem might be related to the fact that the larger bottom rings have bushings for inner support while the upper O-Rings are free to escape towards the oil line and get flat and leaky that way.
So I think it might be worth a try with support rings like that below (shown with an old O-ring). Dimensions are 5x4.7x2mm, made by a friendly mechanic with a drilling machine and two old hondas. I'll probably install them in the next days when I go to replace my valve stem seals.
I hope it is centered well enough, will play around with spare engine parts later. A better solution might be to drill a step and make a longer bushing that is guided by the oil line a bit for say another 3mm of length but I am unwilling to remove the cylinders and fight with tensioner and piston rings just to avoid filings falling in. And I think I should not drill the head as upside down is a risk during assembly.
Please let me know your comments or suggestions.
So I think it might be worth a try with support rings like that below (shown with an old O-ring). Dimensions are 5x4.7x2mm, made by a friendly mechanic with a drilling machine and two old hondas. I'll probably install them in the next days when I go to replace my valve stem seals.
I hope it is centered well enough, will play around with spare engine parts later. A better solution might be to drill a step and make a longer bushing that is guided by the oil line a bit for say another 3mm of length but I am unwilling to remove the cylinders and fight with tensioner and piston rings just to avoid filings falling in. And I think I should not drill the head as upside down is a risk during assembly.
Please let me know your comments or suggestions.