Was going with the SE255 cams:
Road Captain
Joined: Jan 2007
Posts: 605
Likes: 1
From: Minnesota
Hmmm... maybe take your advice for your sig: there I was, minding my own business as usual
Look, just google the WinDyn dyno. You'll see that the numbers are roughly 10% lower than what the DynoJet shows. I got a great improvement over Stage I. Part of that was the SE 255's and part was do to the dyno tune. The bike runs great. I'm not chasing numbers, just trying to provide some numbers that others could expect to see if they use these cams and I provided the dyno chart so that they could see the curve.
I like my bike, the way it runs and pulls at the low end. I can comforatably hit 90+ without down shifting from 6th gear now while running 2-up. If that guys dyno numbers are that low, something is wrong or he got his bike tuned on the same kind of dyno I did. If the later, no problem, but if the former, he's not even getting Stage I performance and should do some investigation. That's why I posted... to help the guy, not put him down!
Look, just google the WinDyn dyno. You'll see that the numbers are roughly 10% lower than what the DynoJet shows. I got a great improvement over Stage I. Part of that was the SE 255's and part was do to the dyno tune. The bike runs great. I'm not chasing numbers, just trying to provide some numbers that others could expect to see if they use these cams and I provided the dyno chart so that they could see the curve.
I like my bike, the way it runs and pulls at the low end. I can comforatably hit 90+ without down shifting from 6th gear now while running 2-up. If that guys dyno numbers are that low, something is wrong or he got his bike tuned on the same kind of dyno I did. If the later, no problem, but if the former, he's not even getting Stage I performance and should do some investigation. That's why I posted... to help the guy, not put him down!
Road Warrior
Joined: Sep 2008
Posts: 1,549
Likes: 8
From: North Texas
Of all the cams threads I've read, never seen anyone talk about the S&S. I'm sure there's somebody that has them, just saying I've never seen anyone chime in about them on any thread I've read. That should tell you something.
With that said, it seems that the 'best' cams are the ones that that person has in their bike. In other words, if I had the SE255's and liked them, then those would be the cams I'd recommend. Same holds true for Woods, HQ's, etc. I DO think there's a difference between the various cams, but it's based (or should be) on what your riding style is and what kind of increase you are looking for. At a minimum, replacing the stock cams with any higher-end cams, will increase your torque and provide greater riding satisfaction.
With that said, it seems that the 'best' cams are the ones that that person has in their bike. In other words, if I had the SE255's and liked them, then those would be the cams I'd recommend. Same holds true for Woods, HQ's, etc. I DO think there's a difference between the various cams, but it's based (or should be) on what your riding style is and what kind of increase you are looking for. At a minimum, replacing the stock cams with any higher-end cams, will increase your torque and provide greater riding satisfaction.
Extreme HDF Member
Joined: Sep 2005
Posts: 11,615
Likes: 50
From: Baton Rouge, LA
That's exactly what I say... they are a very good choice for 96" and 103" baggers running an otherwise stock engine. Very cost effective way to increase torque low in the band. If you're going to increase compression, port your heads, etc, then the 255's will hold you back. But in the right application, they work very well.
As you suggest, the 255's are a single-purpose cam that fits their niche very well. They are not designed to allow much growth, and you can never produce high peak-HP numbers with them should your priorities change in the future.
I agree with you, but you can bump compression up to 10:1 with the 255's. They work very well in the Stage II kit, that is unless you have trouble with hot starts, but that's another subject that's been discussed at length here in the past. Since 10:1 is the practical limit, IMO, I would see 9.5-9.7 as ideal for these cams, especially with the big-bore kit. For example, I think they are an ideal bolt-in for the Ultra Limited with its 103 and 9.7:1 compression. It's too bad they didn't install it as standard in that bike.
As you suggest, the 255's are a single-purpose cam that fits their niche very well. They are not designed to allow much growth, and you can never produce high peak-HP numbers with them should your priorities change in the future.
As you suggest, the 255's are a single-purpose cam that fits their niche very well. They are not designed to allow much growth, and you can never produce high peak-HP numbers with them should your priorities change in the future.
Thread Starter
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Road Captain
Joined: Nov 2007
Posts: 667
Likes: 2
From: SoCal
Not sure whether i should continue this thread or not but i dropped my bike off Tuesday at the stealer. I still hadnt made up my mind which way I was going to go. Service Manager wasnt there yet so I am talking to my service writer. He recommends the same cam (S&S 510)to me. It is what he has on his otherwise stock motor and he loves it. I am going to give it a try. Cant do a dyno tune right now because the tuner is out for a few weeks, he went down and is healing. So a canned map for now. When the tuner gets back I will have it tuned again and we can compare. My original dyno is loaded here:
https://www.hdforums.com/forum/membe...4-hd-dyno.html
Thanks to all for your help
https://www.hdforums.com/forum/membe...4-hd-dyno.html
Thanks to all for your help
Tourer
Joined: Aug 2008
Posts: 474
Likes: 3
From: Los Angeles, CA
Not sure whether i should continue this thread or not but i dropped my bike off Tuesday at the stealer. I still hadnt made up my mind which way I was going to go. Service Manager wasnt there yet so I am talking to my service writer. He recommends the same cam (S&S 510)to me. It is what he has on his otherwise stock motor and he loves it. I am going to give it a try. Cant do a dyno tune right now because the tuner is out for a few weeks, he went down and is healing. So a canned map for now. When the tuner gets back I will have it tuned again and we can compare. My original dyno is loaded here:
https://www.hdforums.com/forum/membe...4-hd-dyno.html
Thanks to all for your help
https://www.hdforums.com/forum/membe...4-hd-dyno.html
Thanks to all for your help
Thread Starter
|
Road Captain
Joined: Nov 2007
Posts: 667
Likes: 2
From: SoCal
I will answer you by PM since some dealers wont even do non EPA cam work.
I can tell you that I finally rode with my buddies this weekend. The one guy usually beats me on his 2007 and i beat him by a couple of bike lengths this weekend. The other guy that rides with us wouldn't even race.
I let them both ride my bike. 1 of them has already dropped his bike off to have the same S&S cam installed. The other wants to.
I cant wait to get it re-dyno'd
I can tell you that I finally rode with my buddies this weekend. The one guy usually beats me on his 2007 and i beat him by a couple of bike lengths this weekend. The other guy that rides with us wouldn't even race.
I let them both ride my bike. 1 of them has already dropped his bike off to have the same S&S cam installed. The other wants to.
I cant wait to get it re-dyno'd
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Cruiser
Joined: Jan 2010
Posts: 109
Likes: 0
I'm putting the 255's in my Limited in a couple weeks. I was hoping they would work if I do headwork in the future. My second choice was the TW6 Woods cam. What do you guys think. MGS true duals , SERT , Performanc Machines AC. 2up riding with the missus on this limited. Hoping to hang with my buddies 95. MY OTHER BIKE HAS se hEADS BIG VALVES rINEHART 2:1 se257 CAM 103 bORE se 10.5 -1 pistons 100+ HP
Road Master
Joined: Jan 2008
Posts: 853
Likes: 5
From: Mnpls MN
What I think is the Woods TW6 will give you a longer and overall taller torque number (accelleration) and about 10 more horses for the same amount of money versus the SE255 cam. What I also think is that you will get better gas mileage on the highway with the Woods TW6. As far as raising the compression; you have to calculate your cylinder pressure before you raise the compression. The SE255 has a short intake duration and there is a limit on how much compression will help or hurt the performance of that cam. Go to some of the engine builder websites and use their cylinder pressure calculators to PRE-determine your cylinder pressure before you bump it up. Talk to a builder and tell him what you are thinking and what your calculations were.
I'm putting the 255's in my Limited in a couple weeks. I was hoping they would work if I do headwork in the future. My second choice was the TW6 Woods cam. What do you guys think. MGS true duals , SERT , Performanc Machines AC. 2up riding with the missus on this limited. Hoping to hang with my buddies 95. MY OTHER BIKE HAS se hEADS BIG VALVES rINEHART 2:1 se257 CAM 103 bORE se 10.5 -1 pistons 100+ HP
Last edited by producer; Jan 27, 2010 at 10:17 PM. Reason: more informatioin