Re: Deleting oil filter on a 39 six?

Posted by HH56 On 2022/9/13 9:21:27

The above posted photo is too small to enlarge and see the port details on the engine but if the arrangement is the same as shown in the 39 Fact and Data Book, if removing the filter you must replace it with a connecting line or jumper tube between the two ports in order for the tappets and lifters to have a supply of oil. The second illustration showing oil flow with the oil circuit going to the left side of the block and then back would indicate two ports are involved in the flow. Not sure which is the feed side from the pump on your engine but on later engines it is the bottom port.

As is shown in the third photo, later year engines also had a two port arrangement and on those engines there was a curved pigtail (item 4) between the ports on engines with no filters. Even though sixes were gone by then, until around 1950-51 production on engines other than the 356, when adding a filter the pigtail was removed and the filter plumbed in so it took the place of the pigtail. Going thru the filter was then the only path available for the oil supplying the lifters. If the filter was removed the pigtail has to be reinstalled or the lifters get no oil.

Attach file:

---

  oil1.jpg (91.06 KB)


  oil2.jpg (172.75 KB)


  oil3.jpg (45.88 KB)