Oil restrictors?

Putting lifter bushings in my d1ve block do I need to install any other oil restrictors?
557, alchohol,soild roller, 6500-7k

Steve-oh wrote:Putting lifter bushings in my d1ve block do I need to install any other oil restrictors?
557, alchohol,soild roller, 6500-7k

Be sure to open the diameter of the passenger side, (main), oil gallery to 5/8" before installing the bushings.

rmcomprandy wrote:

Steve-oh wrote:Putting lifter bushings in my d1ve block do I need to install any other oil restrictors?
557, alchohol,soild roller, 6500-7k

Be sure to open the diameter of the passenger side, (main), oil gallery to 5/8" before installing the bushings.

What is the reason for that ? That way I know what I'm talking about when I let my machinist know. Thanks.

Steve-oh wrote:

rmcomprandy wrote:

Steve-oh wrote:Putting lifter bushings in my d1ve block do I need to install any other oil restrictors?
557, alchohol,soild roller, 6500-7k

Be sure to open the diameter of the passenger side, (main), oil gallery to 5/8" before installing the bushings.

What is the reason for that ? That way I know what I'm talking about when I let my machinist know. Thanks.

The bushing itself will block about 1/4 to 1/3 of the passageway.

Thank you randy for the info.

From what I have read and been researching lifters bushing s are not necessary but not a bad thing , but to put a .065-.070 restrictors to cam bearings and use pushrods to restrict oil as well .

Steve-oh wrote:From what I have read and been researching lifters bushing s are not necessary but not a bad thing , but to put a .065-.070 restrictors to cam bearings and use pushrods to restrict oil as well .

Wherever you read or got this information, most is completely erroneous. This is not the same as small block Cleveland engine.

However, restricted pushrods can be used successfully in restricting oil to a roller valve train with lower horsepower situations.

Randy I have opened up the passenger side galley to 5/8 , what size hole do I need in the lifter bushings?

Steve-oh wrote:Randy I have opened up the passenger side galley to 5/8 , what size hole do I need in the lifter bushings?

I use 3/32" but, some people go a little larger or smaller depending upon their entire valve train and how that engine will get used.