Cam question
Thread Starter
|
Novice
Joined: May 2014
Posts: 16
Likes: 0
From: Brisbane Australia
Cam question
This might be a silly question but I have a stage 4 in my new 103 Street Bob, its dynoed at about 118wrhp and that's cool but I miss the refinement of the stock set up. I assume its lumpy idle and raw manners are due to the cam (SE259E going by the brochure) in the kit, is that correct? If so is there a cam that I could replace it with to get back some of that smoothness? I realize I'd have to sacrifice HP but that's cool, I'd prefer more bottom end anyway, or is only the SE cam going to work with the stage 4 set up?
The good advice Ive gotten so far is that all the components in the pro stage 4 set up work together and its not as simple as just changing the cams over. I was told a Woods TW-555 or a TW-777 might help or give it more bottom and mid range, that's great but smooth is what I'm chasing.
Thanks
)
The good advice Ive gotten so far is that all the components in the pro stage 4 set up work together and its not as simple as just changing the cams over. I was told a Woods TW-555 or a TW-777 might help or give it more bottom and mid range, that's great but smooth is what I'm chasing.
Thanks
)
Ultimate HDF Member
Joined: Jan 2008
Posts: 6,532
Likes: 132
From: SoCal
Just a few questions, what is the cranking pressure? What head gasket is installed? Were the pistons flush with the cylinders, or down in the hole? Did you have the bike tuned or are you just running the SE download? After some more information then your question can be answered a bit better.
HDF Community Team
Joined: Jun 2006
Posts: 12,763
Likes: 2,597
From: san antonio
You will get more useful information if you can provide the information gtrracer is asking for. However, your issue sounds more related to rideability than to the dyno sheet numbers. There have been several similar posting recently. JMHO but the 259e cam set is not a touring cam set which results in the disappointing rideability but, more often than not, a less than optimum tune makes the rideability issues worse. Check out the below post and see if Jim's post rings a bell.
https://www.hdforums.com/forum/engin...er-can-do.html
https://www.hdforums.com/forum/engin...er-can-do.html
Ultimate HDF Member
Joined: Jan 2008
Posts: 6,532
Likes: 132
From: SoCal
You will get more useful information if you can provide the information gtrracer is asking for. However, your issue sounds more related to rideability than to the dyno sheet numbers. There have been several similar posting recently. JMHO but the 259e cam set is not a touring cam set which results in the disappointing rideability but, more often than not, a less than optimum tune makes the rideability issues worse. Check out the below post and see if Jim's post rings a bell.
https://www.hdforums.com/forum/engin...er-can-do.html
https://www.hdforums.com/forum/engin...er-can-do.html
Thread Starter
|
Novice
Joined: May 2014
Posts: 16
Likes: 0
From: Brisbane Australia
I had the dealer install the kit, its the standard pro stage 4 kit, so all the parts and stats that make up that kit if you need a reference. Yes I had it dyno tuned, and that improved it a lot but its still not as nice to ride as it was before the kit was installed. I thought, well its good now after the dyno tune and the extra power and theres a lot would make up for a small loss in rideabiltiy, but at the end of the day Im not as happy riding it as I was before the kit was installed. Ultimately is the only way to get back its smooth refined manners is to change it back to stock? apart from my V&H pipes deep breather and pro tuner. Stage one I think that is and it was awesome.
Ultimate HDF Member
Joined: Jan 2008
Posts: 6,532
Likes: 132
From: SoCal
I had the dealer install the kit, its the standard pro stage 4 kit, so all the parts and stats that make up that kit if you need a reference. Yes I had it dyno tuned, and that improved it a lot but its still not as nice to ride as it was before the kit was installed. I thought, well its good now after the dyno tune and the extra power and theres a lot would make up for a small loss in rideabiltiy, but at the end of the day Im not as happy riding it as I was before the kit was installed. Ultimately is the only way to get back its smooth refined manners is to change it back to stock? apart from my V&H pipes deep breather and pro tuner. Stage one I think that is and it was awesome.
Ultimate HDF Member
Joined: Mar 2012
Posts: 6,129
Likes: 143
From: Santa Cruz
There are some different cams that may work better 555/570 down low but the SE big throttle body and heads don't help drivability down low. But a good dyno tuner should be able to smooth it out, there are few good dyno operators in dealerships.
Trending Topics
Thread Starter
|
Novice
Joined: May 2014
Posts: 16
Likes: 0
From: Brisbane Australia
Oh I had one of the best here do the dyno and yes it made it way better but its still hunting down low wants to go. Which is great but I guess not my ridding stye. I went back to the tuner today and he said, putting it all back to Stage 1 is a bit of a shame not to mention all that money so he suggested putting torque cones in the exhaust. Ive never heard of them. A cone that goes in right at the headers, he said its worth a try, it should smooth out the bottom end and give it more down low, but of course loss from the top. That's coo,l really how often do you need to do 100mph?
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
8 Best Harley-Davidson Motorcycles Ever
Pouria Savadkouei
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Harley-Davidson Reveals Super Cool Cafe Racer Concept
Verdad Gallardo
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Verdad Gallardo
10 Motorcycles You Should Never Buy
Joe Kucinski
10 Things Harley-Davidson Needs to Fix in 2026
Verdad Gallardo
Southpaw Super Glide: A Left-Hand-Drive 1979 Harley FXE Built to Fit the Rider
Verdad Gallardo
HDF Community Team
Joined: Jun 2006
Posts: 12,763
Likes: 2,597
From: san antonio
Did you read the post I linked? It is rather lengthy, as Jim can be but is a follow on to his original after Lozano tuned the Stage 4 kit; Jim's words "the bike is transformed". After reading his last post, I don't believe he would say that the SE map would be fine. Peak numbers didn't change much but power under the curve and rideability were greatly improved on the dyno. I believe Jim might still like a gearing change but I believe with the improved TQ and rideability his sense of urgency for the gearing change has diminished.
HDF Community Team
Joined: Jun 2006
Posts: 12,763
Likes: 2,597
From: san antonio
Oh I had one of the best here do the dyno and yes it made it way better but its still hunting down low wants to go. Which is great but I guess not my ridding stye. I went back to the tuner today and he said, putting it all back to Stage 1 is a bit of a shame not to mention all that money so he suggested putting torque cones in the exhaust. Ive never heard of them. A cone that goes in right at the headers, he said its worth a try, it should smooth out the bottom end and give it more down low, but of course loss from the top. That's coo,l really how often do you need to do 100mph?
Last edited by djl; Jun 28, 2014 at 01:53 PM.