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Oil restrictors?

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Oil restrictors? Empty Oil restrictors?

Post  Steve-oh May 20th 2020, 8:30 am

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

Steve-oh

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Post  rmcomprandy May 20th 2020, 11:47 am

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.

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Post  Steve-oh May 20th 2020, 12:01 pm

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

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Post  rmcomprandy May 20th 2020, 12:06 pm

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.

rmcomprandy

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Post  Steve-oh May 20th 2020, 12:13 pm

Thank you randy for the info.

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Post  Steve-oh May 20th 2020, 12:20 pm

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 .

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Post  rmcomprandy May 21st 2020, 5:39 pm

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.

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Post  Steve-oh June 5th 2020, 7:16 pm

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

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Post  rmcomprandy June 6th 2020, 10:43 am

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.

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