Difference Between Cam or 103
#11
03-27-2010, 07:39 AM
#12
03-27-2010, 09:16 AM
Road Warrior
"The Screaming Eagle stuff is much less potent and is EPA neutered".
The SE components are not EPA neutered, in fact they are considered race components. The stock cams are EPA compliant. Most here would not even understand or care about the subtle differences in engine components and are just average riders. Harley Davidson has been involved in racing long before some were even born but, many want to bash their components without any basis. If Harley components are so bad, why did you buy one in the first place?
The SE components are not EPA neutered, in fact they are considered race components. The stock cams are EPA compliant. Most here would not even understand or care about the subtle differences in engine components and are just average riders. Harley Davidson has been involved in racing long before some were even born but, many want to bash their components without any basis. If Harley components are so bad, why did you buy one in the first place?
#13
03-27-2010, 10:04 AM
I went with iclick suggestions, and found that he is right on with his comments. As you can see from my signature picture with the comments below you can tell what I have done. Now with that said I had my bike dyno tuned when they installed the SEPRT that was to get the air fuel mixture correct. But the results from the tune were, 64.86 HP and 85.16 max torque. The torque band starts performing just over 2000 rpm and starts falling off just past 3000 rpm. Now with that said I am not into speed but with the Ultra it is a beast of a bike and just needed some help at the lower end. I am satisfied............
#14
03-27-2010, 01:08 PM
The thing with the 255 cams in a 96 is that it shifts the torque band so far to the left that the motor comes on RIGHT NOW when you open the throttle. Mike Stedman at Latus Motors has said that there are no cams that will beat a set of se255's up to 3500 rpm. Which is where many of us touring bike owners ride.
I have a stage I 103, and I can tell you it feels stronger than any 96 I've ridden that didn't have cams done. Increasing your displacement will increase your torque and horsepower across the band, in direct proportion to how much you increase displacement (everything else remaining constant). That's a bit of an oversimpflication, and you will eventually run up against heat issues that will start working against you, or you will overpower your exhaust, or run out of fuel, etc. But in smaller increments, it generally holds.
The other way to increase hp and torque across the entire band is to increase compression. Changing cams is not just about raising hp and torque, although it sometimes does that. It's about improving performance by dialing in your torque curve to where it's most effective. That's why cam selection is so critical.
I'm an old school hot rodder, and I can tell you for a fact, I've made fast cars slower by putting in too much cam and carburetor.
I think it would be interesting to actually square off a stage I 103 against a stage 1.5 96 (with 255's.) I'm not talking about comparing dyno charts, I'm talking about finding out which is actually faster.
I will be putting in 255's in my bike very soon. I think that's going to be pretty interesting to see how they affect performance in an already well running 103.
I have a stage I 103, and I can tell you it feels stronger than any 96 I've ridden that didn't have cams done. Increasing your displacement will increase your torque and horsepower across the band, in direct proportion to how much you increase displacement (everything else remaining constant). That's a bit of an oversimpflication, and you will eventually run up against heat issues that will start working against you, or you will overpower your exhaust, or run out of fuel, etc. But in smaller increments, it generally holds.
The other way to increase hp and torque across the entire band is to increase compression. Changing cams is not just about raising hp and torque, although it sometimes does that. It's about improving performance by dialing in your torque curve to where it's most effective. That's why cam selection is so critical.
I'm an old school hot rodder, and I can tell you for a fact, I've made fast cars slower by putting in too much cam and carburetor.
I think it would be interesting to actually square off a stage I 103 against a stage 1.5 96 (with 255's.) I'm not talking about comparing dyno charts, I'm talking about finding out which is actually faster.
I will be putting in 255's in my bike very soon. I think that's going to be pretty interesting to see how they affect performance in an already well running 103.
Last edited by Mike; 03-28-2010 at 02:31 PM.
#16
03-27-2010, 02:24 PM
"The Screaming Eagle stuff is much less potent and is EPA neutered".
The SE components are not EPA neutered, in fact they are considered race components. The stock cams are EPA compliant. Most here would not even understand or care about the subtle differences in engine components and are just average riders. Harley Davidson has been involved in racing long before some were even born but, many want to bash their components without any basis. If Harley components are so bad, why did you buy one in the first place?
The SE components are not EPA neutered, in fact they are considered race components. The stock cams are EPA compliant. Most here would not even understand or care about the subtle differences in engine components and are just average riders. Harley Davidson has been involved in racing long before some were even born but, many want to bash their components without any basis. If Harley components are so bad, why did you buy one in the first place?
#17
03-27-2010, 03:44 PM
#18
03-27-2010, 05:15 PM
#19
03-27-2010, 06:48 PM
tin
#20
03-27-2010, 07:19 PM
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I have tried using the search feature here and see if there is a big difference between cams only or having a 103 build? I have read there are some who have gotten good dyno numbers with just cams. For my riding style I have decided on the SE 255 cam...I don't want to start a post about which cam is best. I would like to hear from those who have done cams only and anyone that can tell me if it's worth the extra money for the 103.