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Tech Area => General Buick Tech => Topic started by: quick72toy on June 13 2013, 11:16:53 PM

Title: Cam bearing clocking?
Post by: quick72toy on June 13 2013, 11:16:53 PM

I have a Stage 1 block and wanted to change out the cam bearing for the new cam. But I noticed that the new cam does not have a groove in it, I picked upt a bearing set that had a groove on the back side.
I  Need some help trying to figure out how to clock this new bearing with the two oil holes. 
Do I clock it to line up with the block holes, or offset it to direct more oil to the mains, or will that not make any difference because it has a backside groove?
 Pics below show what I have
 Thanks
(http://farm6.staticflickr.com/5332/9039330072_478d68ab74_m.jpg) (http://www.flickr.com/photos/49031549@N08/9039330072/)
DSC03904 (http://www.flickr.com/photos/49031549@N08/9039330072/#) by quick72toy (http://www.flickr.com/people/49031549@N08/), on Flickr
 (http://farm3.staticflickr.com/2885/9039331676_cf2dd943fc_m.jpg) (http://www.flickr.com/photos/49031549@N08/9039331676/)
DSC03909 (http://www.flickr.com/photos/49031549@N08/9039331676/#) by quick72toy (http://www.flickr.com/people/49031549@N08/), on Flickr
(http://farm3.staticflickr.com/2875/9037109073_abfb3fc37e_m.jpg) (http://www.flickr.com/photos/49031549@N08/9037109073/)
DSC03910 (http://www.flickr.com/photos/49031549@N08/9037109073/#) by quick72toy (http://www.flickr.com/people/49031549@N08/), on Flickr
(http://farm3.staticflickr.com/2858/9037110489_6940985531_m.jpg) (http://www.flickr.com/photos/49031549@N08/9037110489/)
DSC03915 (http://www.flickr.com/photos/49031549@N08/9037110489/#) by quick72toy (http://www.flickr.com/people/49031549@N08/), on Flickr

Title: Re: Cam bearing clocking?
Post by: Steve Wood on June 14 2013, 12:02:55 AM

There was once a lot of discussion on this and a number of means of approaching the problem.  I think Norbs was reengineering the block but then his car is still in the driveway ten years later so I don't know what he did.

TA Performance had this to say about the bearings they supplied but I don't know if it is applicable to your situation or not

http://www.taperformance.com/proddetail.asp?prod=TA_1556 (http://www.taperformance.com/proddetail.asp?prod=TA_1556)

Title: Re: Cam bearing clocking?
Post by: quick72toy on June 14 2013, 12:03:09 PM

I've been looking at a bunch of old post on all the boards, and have found a bunch of methods. None seem to apply to my particular bearing. (Which I'm now suspecting might have been modified. Instructions say to clock 'the' hole to 3.00 o'clock )
I'll have to ask Norbs what he did to his, but then I might be opening Pandora's box lol.
I did have the TA info but thanks for posting.
I either have to confirm that there is actually two holes in the B-12B bearing, and try to clock it so the drivers side feed hole is covered, or get the correct bearing if it is supposed to have only one hole. 

Title: Re: Cam bearing clocking?
Post by: Just a Six? on June 14 2013, 01:23:09 PM

Paul glad to see you found your way over here!  :cheers:

Title: Re: Cam bearing clocking?
Post by: quick72toy on June 14 2013, 05:05:49 PM

Thanks David,
I'm just getting back into the car stuff again.
Cheers,
Paul