Cam change report
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Extreme HDF Member
Joined: Sep 2005
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From: Baton Rouge, LA
Besides, I didn't do a dyno before the swap and think that would be important in comparing. Fuel Moto's dyno chart for the stock TC96 with his Power Package was done at 17% humidity, which only exists here in S. LA in our imaginations, and with high humidity the numbers would be lower anyway. So if I compared a dyno run after the swap with Fuel Moto's chart it might not show much improvement, but also wouldn't be a very accurate comparison.
During my research someone sent me a dyno chart for the SE255's on a TC96 equipped with RH TD's. I superimposed the chart for the FM PP (lower curves), which is representative of my original configuration, and I feel this shows a fairly accurate before-after comparison. This is except for the low-end part of the 255 chart, which is lower I think because of the TD's, and it is well-known they hurt low-end TQ. Based on what I can feel I think the low-end is now a bit better than the FM stock chart and the rest of the chart is a fair representation of what I am feeling with my butt dyno. If you assume the low-end is higher than shown for the 255's, what we have is a nice, smooth curve that has essentially moved up 6HP & 6TQ without shifting to the right, and that's what I feel like I accomplished.
Last edited by iclick; Mar 26, 2009 at 02:13 PM.
Road Master
Joined: Mar 2008
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From: Michigan
3. Valve-train noise not higher than stock, which was a surprise. However, the mufflers are a bit louder and that is no surprise. What is weird is the exhaust tone at idle, which has a more single-cylinder sound than before, and that tone holds up to about 1250 RPM's, then smooths out more like normal. Idle is no rougher than stock, however, which is still not anywhere near smooth. This tone isn't bad, just different, and doesn't seem to be related to AFR's. This may be a factor of the mufflers' asymmetrical baffles and the cams combined. At roll-on it makes very pleasing sounds like you would expect.
I just installed my set of 255's yesterday. The project went pretty smooth with only one setback. I used the SE adjustable pushrods and the intake rod has to be adjusted down to the very shortest position to get it in. My fat fingers accidently spun the lock nut off and it fell into the lifter cavity. The entire project took me 7 hours and was a good learning experience.
One thing that concerns me is the valve train noise. Mine is noticably different/louder than before. The exhaust sounds better and has a lope to it that lets you know its not a stocker anymore. I was able to take it out for a short run this am and it performs alot better. Has that snap your head back power I was looking for.
My other concern is the clutch. It has enough torque to slip the clutch in 6th gear. If I jump on the throttle at 60mph it will break the clutch loose and rpm's jump way up and the 6th gear light goes out.
All together I have about 400 into the upgrade, (used cams, adjustable pushrods, cam service kit and inner bearing puller/installer). I'm going to have it put on a dyno this week just to see what the numbers are and if they are way off from what I expect they should be I'll try to get my map altered to make any adjustments.
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Extreme HDF Member
Joined: Sep 2005
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From: Baton Rouge, LA
What I don't have is more valve-train noise, and that did surprise me since I expected more. There is an increase but you can still barely hear it, just a faint clicky sound that doesn't bother me. Compared to my old Evo with an Andrews cam this bike is like an electric motor.
I was able to take it out for a short run this am and it performs alot better. Has that snap your head back power I was looking for.
My other concern is the clutch. It has enough torque to slip the clutch in 6th gear. If I jump on the throttle at 60mph it will break the clutch loose and rpm's jump way up and the 6th gear light goes out.
All together I have about 400 into the upgrade, (used cams, adjustable pushrods, cam service kit and inner bearing puller/installer). I'm going to have it put on a dyno this week just to see what the numbers are and if they are way off from what I expect they should be I'll try to get my map altered to make any adjustments.
You have a PCV so did you change the map yet? If not the cams will change the behavior of the MAP sensor enough to require a map change. A dyno tune will do it, map upgrade from Fuel Moto (if you bought the PCV there), or just buy the AT kit and it'll auto-tune while you ride. For $300 I think the latter is the best option.
Last edited by iclick; May 24, 2009 at 02:35 PM.
Road Warrior
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From: Jackson, Michigan
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Road Master
Joined: Mar 2008
Posts: 1,209
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From: Michigan
My valve train noise is also a "clicky" sound, much more so than stock. Enough so that I may take the pushrods out and reinstall just for piece of mind.
The bike has just under 20k so the clutch disks should be fine. I am going to adjust the clutch and see if that helps. I run amsoil 20-50 maybe I should change. If all else fails, I'll look into the HiPerf clutch spring HD sells with their 103 stage 2 kit.
I did get my PCV from FuelMoto, and had Jamie send me the map for the 255's last week so I would have it on hand. I have the slightest stumble off idle to 1st gear. After I get a pull on the dyno next week, I'll have Jamie fix that and based on the dyno results anything else he might recommend.
Street_glider - I chose the 255's based mostly on reports by Iclick and others on this forum. Great cam for those who want more torque and are not concerned about peak HP. If I am at 82hp and 95tq I'll be very happy. I wanted to improve the cruise range torque for passing. These cams are also readily available used on ebay for cheap. They come stock in the SE 110's and alot of those owners upgrade to 260's or better
The bike has just under 20k so the clutch disks should be fine. I am going to adjust the clutch and see if that helps. I run amsoil 20-50 maybe I should change. If all else fails, I'll look into the HiPerf clutch spring HD sells with their 103 stage 2 kit.
I did get my PCV from FuelMoto, and had Jamie send me the map for the 255's last week so I would have it on hand. I have the slightest stumble off idle to 1st gear. After I get a pull on the dyno next week, I'll have Jamie fix that and based on the dyno results anything else he might recommend.
Street_glider - I chose the 255's based mostly on reports by Iclick and others on this forum. Great cam for those who want more torque and are not concerned about peak HP. If I am at 82hp and 95tq I'll be very happy. I wanted to improve the cruise range torque for passing. These cams are also readily available used on ebay for cheap. They come stock in the SE 110's and alot of those owners upgrade to 260's or better
Road Warrior
Joined: Nov 2008
Posts: 1,636
Likes: 7
From: Jackson, Michigan
Ah, sounds good to me too!
Street_glider - I chose the 255's based mostly on reports by Iclick and others on this forum. Great cam for those who want more torque and are not concerned about peak HP. If I am at 82hp and 95tq I'll be very happy. I wanted to improve the cruise range torque for passing. These cams are also readily available used on ebay for cheap. They come stock in the SE 110's and alot of those owners upgrade to 260's or better