What could cause a cam bearing to pop out of place?

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What could cause a cam bearing to pop out of place?

Post  rocketpony on March 31st 2015, 2:13 pm

Got a motor off a guy, a460 block btw. And one of the cam bearings was poped out of place, what could cause this.

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Re: What could cause a cam bearing to pop out of place?

Post  dfree383 on March 31st 2015, 2:45 pm

Poor housing sizing, poor bearing sizing or someone trying to reinstall a used one, improper clearancing to the camshaft can screw them out or spin them, poor tunnel alignment has been know to cause issues and also a bent cam could cause issues.
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Re: What could cause a cam bearing to pop out of place?

Post  maverick on March 31st 2015, 4:57 pm

Popped out or spun out? Was the bearing bore scored?
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Re: What could cause a cam bearing to pop out of place?

Post  rocketpony on March 31st 2015, 6:05 pm

Thanks for the input guys
And that's a good question il go to my garage tonight and check the bore

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Re: What could cause a cam bearing to pop out of place?

Post  rmcomprandy on April 1st 2015, 12:09 am

Usually ... not enough press or not enough clearance or a little of both.

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Re: What could cause a cam bearing to pop out of place?

Post  rocketpony on April 1st 2015, 3:37 pm

There is sum slight scoring in the bearing bore

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Re: What could cause a cam bearing to pop out of place?

Post  dfree383 on April 1st 2015, 4:01 pm

Only 1? Where the the factory installed ones in the block?
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Re: What could cause a cam bearing to pop out of place?

Post  rocketpony on April 1st 2015, 4:15 pm

Yes only 1, and I'm not sure if it was the factory ones

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Re: What could cause a cam bearing to pop out of place?

Post  FalconEh on April 1st 2015, 8:21 pm

Is there any scoring/damage on the edges, did you remove the cam or someone else?
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Re: What could cause a cam bearing to pop out of place?

Post  Lem Evans on April 1st 2015, 8:27 pm

I've seen a #5 roller bearing 'fall' out of an alum. A96 block......1st suspect was reusing the bearings.

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Re: What could cause a cam bearing to pop out of place?

Post  rocketpony on April 1st 2015, 9:06 pm

Cam was already out.
Il jus send block and cam to engine and have him check things and put new bearings in and cam in.
Thanks again guys

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Re: What could cause a cam bearing to pop out of place?

Post  dfree383 on April 1st 2015, 9:55 pm

Lem Evans wrote:I've seen a #5 roller bearing 'fall' out of an alum. A96 block......1st suspect was reusing the bearings.

And you witnessed #5 falling out of a Dove-a block too.....
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Re: What could cause a cam bearing to pop out of place?

Post  Lem Evans on April 1st 2015, 10:00 pm

dfree383 wrote:
Lem Evans wrote:I've seen a #5 roller bearing 'fall' out of an alum. A96 block......1st suspect was reusing the bearings.

And you witnessed #5 falling out of a Dove-a block too.....

I do not like to mention all the shit I've seen lol!

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Re: What could cause a cam bearing to pop out of place?

Post  Curt on April 2nd 2015, 12:58 pm

Lem Evans wrote:

I do not like to mention all the shit I've seen lol!

And we thank you! Laughing
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