Re: New cam bearings, takes 24 ft lbs to turn cam.
[Re: Dyno1]
#1610400
04/23/14 02:50 PM
04/23/14 02:50 PM
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Joined: Mar 2007
Posts: 12,031 Finally a HUSKER again
Moparnut426
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I Live Here
Joined: Mar 2007
Posts: 12,031
Finally a HUSKER again
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Like Mike said, I have a small block,and a big block cam with very sharp grooves cut at an angle to cut their way over the high spots in the bearings, Ive done thisto more than a dozen over the years and havent had any issues. SOme I have to cut, some feel great when I drive them in. I have 2 cam drivers, 1 is a OE mopar special tool, and the other is a after the market unit, and I have to say for mopars I like the OE one, you just have to wrap the drivers with black tape to keep from scaring the bearings.
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Re: New cam bearings, takes 24 ft lbs to turn cam.
[Re: Clanton]
#1610402
04/28/14 10:26 PM
04/28/14 10:26 PM
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Joined: Feb 2009
Posts: 110 Grand Forks, ND
cougar_cat_25
OP
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OP
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Joined: Feb 2009
Posts: 110
Grand Forks, ND
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Quote:
You may find that when the oil passage was drilled it created a hump in the cam bore and may cause a pinch in the bearing.
This is looking like the case. Each oil passage has a pinch. I tried a razor blade and it helped, but I`m worried about a few shutter marks left by the blade when I started or stopped cutting. I have new bearings coming and I`ll try to track down a used cam.
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Re: New cam bearings, takes 24 ft lbs to turn cam.
[Re: cougar_cat_25]
#1610407
04/29/14 07:51 PM
04/29/14 07:51 PM
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Joined: May 2011
Posts: 4,492 northern,Ohio,USA
Clanton
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master
Joined: May 2011
Posts: 4,492
northern,Ohio,USA
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Quote:
Quote:
You may find that when the oil passage was drilled it created a hump in the cam bore and may cause a pinch in the bearing.
This is looking like the case. Each oil passage has a pinch. I tried a razor blade and it helped, but I`m worried about a few shutter marks left by the blade when I started or stopped cutting. I have new bearings coming and I`ll try to track down a used cam.
You could take a fine file like a 1/2 round and just do a couple swipes with light pressure or a 1" dowl rod with sand paper stapled to it but I would go more with the file.You wont need to do much to get rid of the hump.Do what you can with the bearings in there and you have the new for a backup if you don't like your results.jmo.
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Re: New cam bearings, takes 24 ft lbs to turn cam.
[Re: Clanton]
#1610408
04/29/14 08:53 PM
04/29/14 08:53 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
Quote:
Quote:
You may find that when the oil passage was drilled it created a hump in the cam bore and may cause a pinch in the bearing.
This is looking like the case. Each oil passage has a pinch. I tried a razor blade and it helped, but I`m worried about a few shutter marks left by the blade when I started or stopped cutting. I have new bearings coming and I`ll try to track down a used cam.
You could take a fine file like a 1/2 round and just do a couple swipes with light pressure or a 1" dowl rod with sand paper stapled to it but I would go more with the file.You wont need to do much to get rid of the hump.Do what you can with the bearings in there and you have the new for a backup if you don't like your results.jmo.
If this was the case you would ALWAYS see the bearing tight in that area... on my last build I seen it tight most of the way around.. better than half way... I used my cam sizer(old cam with the cuts) to correct the fit.. I just spray cutting fluid in while I spin it with my impact wrench(slow at first) then give it a full shot... I've never had a cam bearing failure
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Re: New cam bearings, takes 24 ft lbs to turn cam.
[Re: cougar_cat_25]
#1610413
05/30/14 12:06 AM
05/30/14 12:06 AM
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Joined: Apr 2006
Posts: 3,675 Akron, Ohio U.S.A.
roadhazard
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Akron, Ohio U.S.A.
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Quote:
Not to dredge up an old post, but I found a used cam and cut grooves into it. Installed new bearings and shaved them with the new tool. A++ idea, works great.
Good deal
Never hurts to follow up on a thread
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