Lopey Cam
Road Warrior
Joined: Jun 2006
Posts: 1,993
Likes: 20
From: Southeast GA
To each his own but I'm happy with the performance I have. Like the poster of this thread, I would spend the money just to get the sound as long as I don't have to lose my bottom end torque.
Road Captain
Joined: Jun 2007
Posts: 716
Likes: 24
The SE grinds perform quite well, in fact I removed my Andrews 54H in favor of the fun factor of the SE-258.
Dyno charts are great, but having a FUN motorcycle is also great.
Extreme HDF Member
Joined: Sep 2006
Posts: 10,033
Likes: 29
Never said SE grinds didn't perform well and never mentioned dyno charts...FWIW, my bike has never been on a dyno.
The 255 bikes don't sound nearly as nasty as the 204 or 211 bikes.
Here's what comp cams says about their automotive "Thumpr" cams:
The reason that the new Thumpr™ Camshafts have such an aggressive exhaust note is that the lobe profiles and grind characteristics chosen by the COMP CamsŽ engineers produce a combination of early exhaust valve opening, long exhaust duration and a generous amount of intake and exhaust overlap to maximize the rough-idling characteristics of the cams without negatively impacting the power output or streetability.
We're not building bikes (or hot rods) just for the performance. We spend just as much time on how they look as how they perform. We buy exhaust partly for performance and partly for the sound. It's about having a great performing bike that also looks and sounds great. It's about having a complete package.
I also think that, (for some of us greybeards anyway) it's about trying to get our bikes to sound like a Harley. The best sounding bike I ever had was a shovel with drag pipes. No way could it keep up with my current ride, but it sure sounded sweet.
Last edited by Mike; Jul 26, 2010 at 06:04 PM.
Extreme HDF Member
Joined: Sep 2006
Posts: 10,033
Likes: 29
Yep, I've known a guy or two that went with too large of a cam, bolted it and did nothing else. She sure sounded good sitting there at an idle, but ran like crap. But like said before, to each his own.
Road Warrior
Joined: Feb 2008
Posts: 1,301
Likes: 7
I chose the cams/rocker combo for my bike because of the performance. The nasty idle is just a dividend. If we were all about performance first, not many of us would be riding Harleys, anyway.
The 255 bikes don't sound nearly as nasty as the 204 or 211 bikes.
Here's what comp cams says about their automotive "Thumpr" cams:
The reason that the new Thumpr Camshafts have such an aggressive exhaust note is that the lobe profiles and grind characteristics chosen by the COMP CamsŽ engineers produce a combination of early exhaust valve opening, long exhaust duration and a generous amount of intake and exhaust overlap to maximize the rough-idling characteristics of the cams without negatively impacting the power output or streetability.
We're not building bikes (or hot rods) just for the performance. We spend just as much time on how they look as how they perform. We buy exhaust partly for performance and partly for the sound. It's about having a great performing bike that also looks and sounds great. It's about having a complete package.
I also think that, (for some of us greybeards anyway) it's about trying to get our bikes to sound like a Harley. The best sounding bike I ever had was a shovel with drag pipes. No way could it keep up with my current ride, but it sure sounded sweet.
The 255 bikes don't sound nearly as nasty as the 204 or 211 bikes.
Here's what comp cams says about their automotive "Thumpr" cams:
The reason that the new Thumpr Camshafts have such an aggressive exhaust note is that the lobe profiles and grind characteristics chosen by the COMP CamsŽ engineers produce a combination of early exhaust valve opening, long exhaust duration and a generous amount of intake and exhaust overlap to maximize the rough-idling characteristics of the cams without negatively impacting the power output or streetability.
We're not building bikes (or hot rods) just for the performance. We spend just as much time on how they look as how they perform. We buy exhaust partly for performance and partly for the sound. It's about having a great performing bike that also looks and sounds great. It's about having a complete package.
I also think that, (for some of us greybeards anyway) it's about trying to get our bikes to sound like a Harley. The best sounding bike I ever had was a shovel with drag pipes. No way could it keep up with my current ride, but it sure sounded sweet.
quick question since I am researching cams....you had posted " the lobe profiles and grind characteristics chosen by the COMP CamsŽ engineers produce a combination of early exhaust valve opening"
doesnt the early exhaust valve opening produce low end torque as opposed to a later opening? Does the SE204 perform well 2000-5500 w/o any other mod?
Road Captain
Joined: Jun 2007
Posts: 716
Likes: 24
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cams
Road Captain
Joined: Jun 2007
Posts: 716
Likes: 24