#1 Main bearing oil hole

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Post  75truck on April 4th 2015, 2:50 am

The front main bearing hole seems to be outward of the oil slot in the main bearing. (see pic)

#1 Main bearing oil hole  Front%20Mains

Do I need to oval the small hole towards the center to allow the front cam bearing to get more oil? Notice the #2 bearing slot is over both holes.

Bob
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Post  Gregaust on April 4th 2015, 4:21 am

That is normal . Although not necessary I believe , I do chamfer the hole slightly

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Post  DaveMcLain on April 4th 2015, 9:34 am

75truck wrote:The front main bearing hole seems to be outward of the oil slot in the main bearing. (see pic)

#1 Main bearing oil hole  Front%20Mains

Do I need to oval the small hole towards the center to allow the front cam bearing to get more oil? Notice the #2 bearing slot is over both holes.

Bob
Tucson

The oil is also fed by the big hole on number one so it is no problem as it is...

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Post  rmcomprandy on April 4th 2015, 10:23 pm

If you are concerned about the center hole to the cam bearing you can completely block it on number1 if you wish because, it is fed oil from the other side.

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Post  c.evans on April 6th 2015, 1:41 am

Don't bother chamfering it. As dave and Randy have both said, it gets plenty of oil from the big galley going across the front of the block.

Charlie

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#1 Main bearing oil hole  Empty Ok no need to enlarge!

Post  75truck on April 7th 2015, 11:20 pm

Thanx guys - now that the kind of experience that really helps.


Thank you,


Bob
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