I would appreciate your help/suggestion with an oil leak problem on a freshly rebuilt and broke in (~4000 miles) R2 Avanti. The leak is occurring at the rear of the block where an oil passage resides less than a half inch from the edge of the block. The oil passage at this point is larger in the block than in the head which may also be contributing to a poor seal at this point. The leak is apparently passing by the head gasket.
The engine oil pressure is 60 lbs cold and 45 to 50 lbs hot at speed about 25 to 30 at hot idle (700 RPM). Engine tempurature is good with no loss of coolant however I am loosing about a quart of oil every 100 miles through this head gasket leak. I have been using the thin metal head gasket. The machine shop is suggesting counter boring the oile passage in the head and placing an O ring in the counter bore to achive a better seal.
Have you ever heard of this problem? What do you think of the counter bore idea? and Do you have any other/better suggestions? One concern I have is I thought the Avanti engines had an oil restrictor in the passage to the head to eliminate oil pooling in the head and the resulting oil passing by the valve seals. Is the oil passage size transition from block to head part of this restrictor system and will it be damaged or made ineffective by counter boting the head passage.
Any help, suggestions or critisim would be welcome.
1963r2
The engine oil pressure is 60 lbs cold and 45 to 50 lbs hot at speed about 25 to 30 at hot idle (700 RPM). Engine tempurature is good with no loss of coolant however I am loosing about a quart of oil every 100 miles through this head gasket leak. I have been using the thin metal head gasket. The machine shop is suggesting counter boring the oile passage in the head and placing an O ring in the counter bore to achive a better seal.
Have you ever heard of this problem? What do you think of the counter bore idea? and Do you have any other/better suggestions? One concern I have is I thought the Avanti engines had an oil restrictor in the passage to the head to eliminate oil pooling in the head and the resulting oil passing by the valve seals. Is the oil passage size transition from block to head part of this restrictor system and will it be damaged or made ineffective by counter boting the head passage.
Any help, suggestions or critisim would be welcome.
1963r2
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