Re: 320 rocker arm/shaft assembly

Posted by Owen_Dyneto On 2009/1/17 16:25:44

Mine experience is with 1934. Earlier years are similar (though may have stamped rocker arms), 34 thru 39 the same I believe. It should be obvious by looking at the assembly that it's all pressure lubricated so don't forget to insure that all the drilled oil passages line up properly and are clean and free of obstruction. If memory serves me, the oil feed is at the far ends of the housings via oil feed holes in the block that line up with an extra hole in the housing between the two hold-down studs which feeds the corresponding hole in the shaft. It's probably a bit extreme to pull the plugs at the end of the rocker arms themselves to clean them. On occasion, especially if oil pressure has gotten low and the car kept in use, the pins and rollers will begin to show wear which can become a major source of loss of oil pressure. Egge has replacement pins and rollers though just plain, no needle bearings as original.