Oil tube

[Dtolson9]

Hello. I’m wanting to run a valve cover that doesn’t have the oil bypass tube. I have an A block. The block is not full oil pressurized. Will this create a problem not having the bypass tube on?

 

[Synchro909]

IMO, If the tube was not necessary, Henry would have saved the $ and not put it there. I suspect that without it, there would be too much oil in the valve chamber and some of it then being sucked up the inlet valve stems and burned.

 

[ursus]

For a brief time Ford produced Model A engines without the oil return tube but soon went back to installing valve covers with tubes, probably for the very reason cited by Synchro909 above. The later Model B engine had pressure to the mains and the excess leakage into the valve gallery was drained via holes to the dipper tray.

 

[Bob C]

Here's an engine with no return pipe.

 

[oldspert]

Here's an engine with no return pipe.

Sure would like to see the stamped number on this block to see when it was made.

 

[nkaminar]

Oil tube elimination kit available at Dad's, see https://www.dadsvintageautoparts.com/product-page/elimination-kit. This is valuable for a Burtz block.

 

[Bob C]

Sure would like to see the stamped number on this block to see when it was made.

The Standards say a few engine were produced between
May and October 1928 without the oil return pipe.

 

[Bob Bidonde]

The oil return pipe is a must have to maintain an adequate supply of oil to the dip tray in the oil pan.