Inner Cam Bearing
#11
01-15-2019, 10:02 PM
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Join Date: Nov 2015
Location: Alberta Canada & PV Arizona
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Ridetothehill (01-16-2019)
#12
01-15-2019, 10:04 PM
Moderator
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Ridetothehill (01-16-2019)
#13
01-16-2019, 06:18 AM
Banned
When changing camshafts, many choose to replace the inner cam bearing with a full complement roller bearing. The OEM caged assembly roller produces half the friction and has a speed rating of three times full complement. When looking at the two side by side, it is obvious that full has twice the surface contact area. Full complement has a better load rating; but, more friction. Every decision made when planning a build has it's trade offs.
we repair about 2-3 cases a month for blown out OEM inner cam bearings,never had to repair one for a Torrington going bad
#14
01-16-2019, 07:05 AM
I am of course assuming these are motors used in "normal" street riding and not racing. I could not imagine anyone would consider using the OEM over Torringtons in a race build. How many bikes do you service in a month to get 2-3 blown cam bearings? Thank you for your input on this. This is what I was looking for. I am not using a high lift cam or heavy springs; therefore, I am inclined to not touch the bearing. The motor only has 5000mi. The current decision on my plate is if I should go with the quick install pushrods or keep the one piece. I don't like the idea of dealing with the oil lines and more concerning is the rocker shaft stand offs. Feuling has studs that take stress off the stand offs. Again, thank you for your input. I am grateful for any and all info that will help me with this build and the next ones. This has become my retirement hobby.
#16
01-16-2019, 07:40 AM
Road Warrior
I am of course assuming these are motors used in "normal" street riding and not racing. I could not imagine anyone would consider using the OEM over Torringtons in a race build. How many bikes do you service in a month to get 2-3 blown cam bearings? Thank you for your input on this. This is what I was looking for. I am not using a high lift cam or heavy springs; therefore, I am inclined to not touch the bearing. The motor only has 5000mi. The current decision on my plate is if I should go with the quick install pushrods or keep the one piece. I don't like the idea of dealing with the oil lines and more concerning is the rocker shaft stand offs. Feuling has studs that take stress off the stand offs. Again, thank you for your input. I am grateful for any and all info that will help me with this build and the next ones. This has become my retirement hobby.
Even so upgrading the inner cam bearing is a good idea
#17
01-16-2019, 07:47 AM
Yes, I have an M8. This cam upgrade will be a minor one. I plan to do a major build with this bike in a couple of years after I put about 30000 miles on it. I'm going to be back into this camchest for sure. Trying to keep it simple for now with just a little torque bump. Not like it needs one.
#18
01-16-2019, 12:14 PM
Supporter
Yes, I have an M8. This cam upgrade will be a minor one. I plan to do a major build with this bike in a couple of years after I put about 30000 miles on it. I'm going to be back into this camchest for sure. Trying to keep it simple for now with just a little torque bump. Not like it needs one.
#20
01-17-2019, 06:29 AM
Banned
I am of course assuming these are motors used in "normal" street riding and not racing. I could not imagine anyone would consider using the OEM over Torringtons in a race build. How many bikes do you service in a month to get 2-3 blown cam bearings? Thank you for your input on this. This is what I was looking for. I am not using a high lift cam or heavy springs; therefore, I am inclined to not touch the bearing. The motor only has 5000mi. The current decision on my plate is if I should go with the quick install pushrods or keep the one piece. I don't like the idea of dealing with the oil lines and more concerning is the rocker shaft stand offs. Feuling has studs that take stress off the stand offs. Again, thank you for your input. I am grateful for any and all info that will help me with this build and the next ones. This has become my retirement hobby.
The following users liked this post:
Ridetothehill (01-17-2019)