Author Topic: Cam bearing clocking?  (Read 2390 times)

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Offline quick72toy

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Cam bearing clocking?
« 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

DSC03904 by quick72toy, on Flickr
 
DSC03909 by quick72toy, on Flickr

DSC03910 by quick72toy, on Flickr

DSC03915 by quick72toy, on Flickr
1972 Toyota Celica  87 TR drive train
Motor 30 over, 10/10 crank, HV.oil pump, P&P heads, PTE 44, Hot wired GSS 340, 52lb Siemens, mod ECM, Speedpro 204/214, Dutweiller big neck intercooler, 62 mm TB, Power Plate, Hot wired coilpack    AC CR42’s, Postons headers, MAFTPro,  LC1 WB O2 sensor, Alky kit

Offline Steve Wood

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Re: Cam bearing clocking?
« Reply #1 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
Steve Wood

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A lot of broken parts does not make you a racer; it makes you a slow learner.

Offline quick72toy

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Re: Cam bearing clocking?
« Reply #2 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. 
1972 Toyota Celica  87 TR drive train
Motor 30 over, 10/10 crank, HV.oil pump, P&P heads, PTE 44, Hot wired GSS 340, 52lb Siemens, mod ECM, Speedpro 204/214, Dutweiller big neck intercooler, 62 mm TB, Power Plate, Hot wired coilpack    AC CR42’s, Postons headers, MAFTPro,  LC1 WB O2 sensor, Alky kit

Offline Just a Six?

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Re: Cam bearing clocking?
« Reply #3 on: June 14 2013, 01:23:09 PM »
Paul glad to see you found your way over here!  :cheers:
David
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Offline quick72toy

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Re: Cam bearing clocking?
« Reply #4 on: June 14 2013, 05:05:49 PM »
Thanks David,
I'm just getting back into the car stuff again.
Cheers,
Paul
1972 Toyota Celica  87 TR drive train
Motor 30 over, 10/10 crank, HV.oil pump, P&P heads, PTE 44, Hot wired GSS 340, 52lb Siemens, mod ECM, Speedpro 204/214, Dutweiller big neck intercooler, 62 mm TB, Power Plate, Hot wired coilpack    AC CR42’s, Postons headers, MAFTPro,  LC1 WB O2 sensor, Alky kit

 

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