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Discussion Starter · #1 ·
I have close to 50k on the original 2011 103 and am playing with the idea of putting cams in. I have never done cams on a mc before but have done plenty of V8s in my time. It is my understanding that the twin cam motor uses needle bearings in the cam bearings. It would seem that they would get less wear than say your brass automotive equivalent and those are just getting broke in at 50k. Is there any real danger to just swapping the cam without swapping the bearings?
 

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I have close to 50k on the original 2011 103 and am playing with the idea of putting cams in. I have never done cams on a mc before but have done plenty of V8s in my time. It is my understanding that the twin cam motor uses needle bearings in the cam bearings. It would seem that they would get less wear than say your brass automotive equivalent and those are just getting broke in at 50k. Is there any real danger to just swapping the cam without swapping the bearings?
Danger? I dont know, but there's no danger in a simple bearing upgrade while you're already in there.
 

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Discussion Starter · #4 ·
Torrington? I thought S&S was the way to go. Thank you for your input.
 

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Danger? I dont know, but there's no danger in a simple bearing upgrade while you're already in there.
+++1 on this. You're already in there, install some new ones.
 

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New bearings are definitely recommended. Not only because of the wear and fatigue of the old bearings, but also because they have much more surface area and more rollers than the original style bearings. The replacements are much better and more supportive of the cam surfaces.
 

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If the cam bearing have already been upgrade to the Sonnax bearing then you can get away with using the same cam bearings. Of course it depends on how long the bearing have been in service, but for the cost of the bearings it is a good idea to swap them out if you can.
I have pulled my cams and reinstalled them a couple of times and I never swapped out the bearings and I haven't had any problems but my cam bearings have been upgraded to the Sonnax bearings. I wouldn't do it with the OEM cam bearings.
 

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Discussion Starter · #13 ·
My thought was getting by without the tool. I will swap the bearings out.
 

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Same here.
 

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If the cam bearing have already been upgrade to the Sonnax bearing then you can get away with using the same cam bearings. Of course it depends on how long the bearing have been in service, but for the cost of the bearings it is a good idea to swap them out if you can.
I have pulled my cams and reinstalled them a couple of times and I never swapped out the bearings and I haven't had any problems but my cam bearings have been upgraded to the Sonnax bearings. I wouldn't do it with the OEM cam bearings.
Same here.
 

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From being a Tech for over 25 yrs I say def yes to new cam bearings, I bought the install kit with my fueling cams from fueling also they came with Timken, great quality bearing.
 

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If you are in there any way for the small price of the bearings it would bring me great piece of mind just knowing i did the right thing,Trust me if you dont an the old bearings take a shit you will be kicking yourself in the ass later.
 
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