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[RoadDawg]

Here are the specs on Both Plus someone mentioned leaving the 585 in  So its in here as well


SE-255 25638-07 .556"/.556" 211°/235° Intake: 06° BTDC/25° ABDC
Exhaust: 48° BBDC/07° ATDC 0.130"/.116"
SE-259E 25482-10 .579"/.579" 246°/250° Intake: 19° BTDC/47° ABDC
Exhaust: 58° BBDC/12° ATDC 0.182"/.155"
SE-585 25400117 .584"/.584" 234°/240° Intake: 18° BTDC/36° ABDC
Exhaust: 47° BBDC/13° ATDC 0.178”/.142"

Thanks for sending this but I have no idea what it all means. I'm not much of a mechanic. 

[Unbalanced]

I want to leave the 255 cams in. All mechanics at my dealership insist that is a bad idea and I should stick with the 259e cams. I don't want to lose low end torque. Why are they telling me this? What is the downside to leaving 255 cams in with a 117 kit? If I go with the 259e cams, will the bigger displacement and higher compression in the 117 kit make up for the late cams early on?

As said above high cranking compression, PMS (read retard timing to stop the pinging) so you lose more than you would gain better to get the right cam.   The other consideration is HEAT and lots of it, there is no overlap to speak of in the cam.   You would be better served to look at the 24d or varieties of it if you want to keep you down low torque.   The 259e is going to come in around 3000+ rpm and then go like a scalded dog, but many dont ride in that range all the time, its more familiar to find most/many ride in the 2300-3300 range the vast majority of the time.   that is why so many like the torque the quick closing intake of the 255 has, but imo its not the cam for this build or ones similar to it.

[110tHunDer]

I want to leave the 255 cams in. All mechanics at my dealership insist that is a bad idea and I should stick with the 259e cams. I don't want to lose low end torque. Why are they telling me this? What is the downside to leaving 255 cams in with a 117 kit? If I go with the 259e cams, will the bigger displacement and higher compression in the 117 kit make up for the late cams early on?

Last question, first: The dyno chart is telling you "no."

On the first question: You should ask the mechanics why they're telling you that.  But, I believe you would be setting yourself up for some major pinging and difficult starting as a result of some very high cold cranking pressures.  I don't think it would play well with the larger throttle body, either.  But, I could be wrong.

[cvo1717]

I know it says the steel is 3 times stronger than the cast iron ,but don't you think it will be too thin at the bottom?

[hrdtail78]

I tuned a stage 4 from a dealership that went with the 255.  Had SE heads and 10.5:1 pistons.  It wasn't fun to tune.  Had to pull timing everywhere.  Starting was taking care of with ACR's.  The bike ran on the hot side.  Can it be done?  Yes.  Is there better alternatives?  Yes.  Is it worth saving the money on not buying a new cam?  IMO you can save even more by not buying the 117 kit.  If you are going to spend the money on the 117.  Spend the extra money to do it right the first time and pick a better cam.  I have seen too many handcuff themselves around a part to save money only to turn around and spend that money down the road and the expense of another tune. 

[Lever]

That's the million dollar question
I'm going to wait for some guinea pigs 1st  ...for longevity etc

Sent from my SCH-I535 using Tapatalk

[greglyon]

As said above high cranking compression, PMS (read retard timing to stop the pinging) so you lose more than you would gain better to get the right cam.   The other consideration is HEAT and lots of it, there is no overlap to speak of in the cam.   You would be better served to look at the 24d or varieties of it if you want to keep you down low torque.   The 259e is going to come in around 3000+ rpm and then go like a scalded dog, but many dont ride in that range all the time, its more familiar to find most/many ride in the 2300-3300 range the vast majority of the time.   that is why so many like the torque the quick closing intake of the 255 has, but imo its not the cam for this build or ones similar to it.

Thanks for the explanation

[OakleyFreak]

The TC-24D is popular in the 110
here are the specs for comparison

[bakon]

Lots of cams are good at 10:1.
Is there a cometic water head gasket to bump this up? Or what is the gasket thickness to this kit is better question.

[Mano]

Seen this on another CVO forum /site. It is being advertised by St. Charles Harley in St. Louis. It is a bolt on kit that will go onto a 110 and make it a 117. It also has what they say it will put out. They said more information to follow after the dealer show. No price of how much. I wonder if Harley will honour the warranty with this kit.

In other links (which I cannot verify) they talked about a 2016.5 coming out with a 120 in it now since they are bumping up the 110's.

Anyway where there is smoke there is fire.

[Rooster]

There is a thread on this with the price info

[OBB]

Seen this on another CVO forum /site. It is being advertised by St. Charles Harley in St. Louis. It is a bolt on kit that will go onto a 110 and make it a 117. It also has what they say it will put out. They said more information to follow after the dealer show. No price of how much. I wonder if Harley will honour the warranty with this kit.

In other links (which I cannot verify) they talked about a 2016.5 coming out with a 120 in it now since they are bumping up the 110's.

Anyway where there is smoke there is fire.

Another CVO forum?


Looking at this chart on the right, after my '15 was tuned with the DX and 2" cores, I don't see much improvement in tq over mine ( mine dyno'd at 112). With the HP being about 12-14 ponies higher, I'm not sure I'd spend the money for this kit if that's what MoCo is putting out for numbers.

[KC2GIW]

Another CVO forum?


Looking at this chart on the right, after my '15 was tuned with the DX and 2" cores, I don't see much improvement in tq over mine ( mine dyno'd at 112). With the HP being about 12-14 ponies higher, I'm not sure I'd spend the money for this kit if that's what MoCo is putting out for numbers.

I have to imagine with a better cam this kit would have to make way better numbers than barely 120 ft/lb


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[SHRADER]

As someone mentioned, I believe this is forshadowing a change in the production CVO for next year. Going to 117 at least.

[mike jesse]

First thing I'd do is address the flywheel assembly.
Order up the S&S flywheels and never worry about 'IF or WHEN" again.