2010 ultra wants geared cams
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Joined: Sep 2009
Posts: 3,569
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From: deland,florida
IMO,if the runout is too much for the gear drive cams,its time to address the lower end,not just leave the hyd. tensioners in there.back in the day,we wouldn't even think of any performance up grades on a evo with .005+ run out
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Joined: Dec 2007
Posts: 12,084
Likes: 829
As already mentioned, the 48 is a great upgrade over the 255, and will help tame heat as well.
We use S&S lifters here and do not "re-box/re-badge" someones elses products and then call them out own............lot of that happy stuff out there these days in an attempt to create larger-than-life scenario's.
Scott
We use S&S lifters here and do not "re-box/re-badge" someones elses products and then call them out own............lot of that happy stuff out there these days in an attempt to create larger-than-life scenario's.
Scott
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Tourer
Joined: May 2008
Posts: 416
Likes: 0
From: Spokane Valley, Washington State
se 255 cams were toast at 57,000
When my Indy opened the bike up, the se255 cams were heavily pitted on the front lob as well as the lifters. I have no idea what happened there. The lifters only had 30k on them. The Cams had 57k.
We have replaced the 255 with the newish Redshift 527 cam. I am hoping that this cam will work great with the 103/baisley super stock heads. We also added the Zippers tensioners and, of course, new lifters.
I am anxious to ride and see what the difference is going to be. I am pretty sure I will lose some bottom torque, but hopeful the heat will diminish as well as the detonation. I am also assuming the power curve will go to the right a few hundred RPM's. That should put the power curve in the 2500 to 4500 range, maybe a bit higher(though I seldom have the bike engine spinning that fast.)
I'll report back...
We decided to wait on the lower end until we are closer to 90 to 100,000. Then we'll just do a complete rebuild including boring the bike out a bit , and welding the crank/flywheel, and put roller bearings back in the case....we'll see....
We have replaced the 255 with the newish Redshift 527 cam. I am hoping that this cam will work great with the 103/baisley super stock heads. We also added the Zippers tensioners and, of course, new lifters.
I am anxious to ride and see what the difference is going to be. I am pretty sure I will lose some bottom torque, but hopeful the heat will diminish as well as the detonation. I am also assuming the power curve will go to the right a few hundred RPM's. That should put the power curve in the 2500 to 4500 range, maybe a bit higher(though I seldom have the bike engine spinning that fast.)
I'll report back...
We decided to wait on the lower end until we are closer to 90 to 100,000. Then we'll just do a complete rebuild including boring the bike out a bit , and welding the crank/flywheel, and put roller bearings back in the case....we'll see....
Last edited by Trek; Feb 21, 2015 at 12:11 AM.
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Tourer
Joined: May 2008
Posts: 416
Likes: 0
From: Spokane Valley, Washington State
I have the bike back and though it is has not had enough time/miles to tune itself, I'm not noticing any tuning issues.
The Redshift 527 "feel" like about the same as the S.E. 255 though the power curve feels like it has moved to the right a bit. It seems to wake up a bit more at (According to my tach) about 2300 rpm's. Below that is not a noticeable difference but it seems to be a bit less. I have not had a chance to ride much past 4000 rpms, though it was pulling strong longer than the 255 was.
Overall, the 527 is a quieter cam for the exhaust note and it sounds a bit lower in frequency. It pulls about the same as the s.e. 255 after 2300 RPM's though it does not seem to be much different below. Plus, I couldn't make it ping. The 255 would ping even in this cold weather if I 'lugged' the motor at all. The 527 did not and, as I said, the tune is not complete.
If there is a difference in the 2500 to 3500 rpm range, I think I would have to see a dyno chart to show it. I do suspect that they are about the same in my riding range.
Sure wish I knew why a cam would start pitting at 57000 miles. I was thinking they would last anther 30 to 40 K. I service the bike at 3000 miles. Oh well...
The Redshift 527 "feel" like about the same as the S.E. 255 though the power curve feels like it has moved to the right a bit. It seems to wake up a bit more at (According to my tach) about 2300 rpm's. Below that is not a noticeable difference but it seems to be a bit less. I have not had a chance to ride much past 4000 rpms, though it was pulling strong longer than the 255 was.
Overall, the 527 is a quieter cam for the exhaust note and it sounds a bit lower in frequency. It pulls about the same as the s.e. 255 after 2300 RPM's though it does not seem to be much different below. Plus, I couldn't make it ping. The 255 would ping even in this cold weather if I 'lugged' the motor at all. The 527 did not and, as I said, the tune is not complete.
If there is a difference in the 2500 to 3500 rpm range, I think I would have to see a dyno chart to show it. I do suspect that they are about the same in my riding range.
Sure wish I knew why a cam would start pitting at 57000 miles. I was thinking they would last anther 30 to 40 K. I service the bike at 3000 miles. Oh well...
Tourer
Joined: Sep 2014
Posts: 420
Likes: 5
From: Kingsport, TN
How does the swipe pattern (where the lifters' rollers contact the cam lobes) look on the lobe ramps? Any scoring or grooves? Is the pitting also on the base circle of the lobes?
Last edited by dynawg1; Feb 21, 2015 at 05:55 PM.
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Tourer
Joined: May 2008
Posts: 416
Likes: 0
From: Spokane Valley, Washington State
No scoring or grooves. Pitting is on the top of the lobe. (Front cylinder only.) Nothing on the base of the lobes.
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