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[happyman]

ok then, now my question is are the cylinders available for sale, or only in KIT form, also are there some over size(s) piston if needed for proper fitment of these cylinders that MAY need cleaned up? what comp ratios are available? thanx   

how many  Harley shops do you think have a hone  that will hone these cylinders? I have an idea it could be a problem but not positive.

[HD Street Performance]

I doubt I would touch honing them. They are either straight concentric and on size or good luck. I wanted to find a piston with a small dome and only found 1.5cc off the shelf. Won't work and not worth the effort. Still have to mill to get to 10.8 where that 259 works good.

[fastfreddy]

how many  Harley shops do you think have a hone  that will hone these cylinders? I have an idea it could be a problem but not positive.

not, zero, 0...none

[fastfreddy]

The SE585 is pushed there but can run there. The SE259E is very happy there.
It is for this reason I am making pistons that will have a small dome.

will be staying tuned in, as i will need 10.8ish and the relief for a 2.130 intake, thanx

[happyman]

I doubt I would touch honing them. They are either straight concentric and on size or good luck. I wanted to find a piston with a small dome and only found 1.5cc off the shelf. Won't work and not worth the effort. Still have to mill to get to 10.8 where that 259 works good.

the part that sucks, is not a way for most check for out of spec. so they may give you a 1 year warranty , but then you get kicked in the ass for the labor for doing the testing.   what a bargin !

[cvosjoe]

ok then, now my question is are the cylinders available for sale, or only in KIT form, also are there some over size(s) piston if needed for proper fitment of these cylinders that MAY need cleaned up? what comp ratios are available? thanx   

The cylinders can be purchased separately. As far as pistons go I'm having a set of custom pistons made to fit the cylinders.

[dnlpnd]

I personally want a "torquey" feel, my research indicates a cam with an intake lift of ~0.585" to 0.615" is required to take full advantage of ported heads with the 117 kit.

Your research is not correct because the lift is not that large of a factor, a fine tuning element only.
Duration, LC and LSA are more important
These numbers determine the intake close ABDC and exhaust open BBDC which will make or break how the bike feels on the street.
Research needs to be done very carefully and you usually receive "advice" as part of a sales pitch which can and usually is highly biased.
When a CVO 110 head flows 330 with good air speed and low lift numbers it is actually a bit oversized on a 110 cu/in motor with a peak of 6250 rpm. Still has overhead on a 117"

Okay fair enough, I knew I was being overly simplistic by focusing on lift.  So, maybe I should have said most of the cams that everyone says will optimize ported heads on a 117 are coincidentally around 0.590" lift cams.  So, with that said, please weigh on what cam you recommend for a "torqey" ride with heads flowing ~300cfm, 58mm intake, ~10.7:1 compression, and SE Heavy Breather?  Here is a list a cams I found in the 0.590 lift range, but feel free to recommend others.

Thanks,

dnlpnd

[HD Street Performance]

I can't comment.
It won't help you and will just make things hard for whomever gets the job.
All I can tell you is in reference to heads I ported on similar motors. That said the gamut of exhaust systems is a stronger factor in the riders feel. I am happy to go through the combinations with my customers but there is not enough time in a day to work on my customers work. I have to be fair to them. The parts selection process is not a menu process. It is a combination of parts that work well together. Many of the cams you have listed can work but to get them to work best the compression changes, possibly valve sizes, port sizing, and pipe selection plus injectors and tb sizing.
Good better best parts selection is not the way to go. Proven combinations of parts, that's the formula. All the "best " parts does not necessarily = a good running long living motor.
More on lift
Consider where in the IC cycle the piston speed is greatest (demand) on the intake cycle and what typical lift is there when cylinder filing is critical. Consider coefficient of discharge.

[GMR-PERFORMANCE]

well I would buy the cylinders first them measure them before you build pistons There is not adjustment to speak of for piston vs wall on the HD cylinder .. Other way to get there but again most of us are not going to give away everything we do.. For a drop on its more than " calling up and having a piston built " at least in my opinion it is..    I wonder how installing other brand of  pistons will work out if care is not taken .. I am not saying you are not,... just thinking out loud so to speak


as for shelf you are dealing with a slightly shorter rod in the new bikes then again most are well down in the cylinder as well  , but no reason that you cannot use a 117 piston its not like that is a new engine size.  Sure in the past it was a larger spigot and case boring was needed. Pistons with domes where built long ago..   

[dnlpnd]

I doubt I would touch honing them. They are either straight concentric and on size or good luck. I wanted to find a piston with a small dome and only found 1.5cc off the shelf. Won't work and not worth the effort. Still have to mill to get to 10.8 where that 259 works good.

well I would buy the cylinders first them measure them before you build pistons There is not adjustment to speak of for piston vs wall on the HD cylinder .. Other way to get there but again most of us are not going to give away everything we do.. For a drop on its more than " calling up and having a piston built " at least in my opinion it is..    I wonder how installing other brand of  pistons will work out if care is not taken .. I am not saying you are not,... just thinking out loud so to speak

as for shelf you are dealing with a slightly shorter rod in the new bikes then again most are well down in the cylinder as well  , but no reason that you cannot use a 117 piston its not like that is a new engine size.  Sure in the past it was a larger spigot and case boring was needed. Pistons with domes where built long ago.

In your guy’s opinions, if a person can get to the compression they seek (10.8:1) through a thinner HG and milling the head, is there any big advantage to domed pistons, other than leaving more meat on the head for future use and maybe not messing with intake alignment so much?  As a wise man once told me, “don’t overthink it!” Besides, who wants to pay for the pistons twice as both 117 kits include pistons?

In my opinion, it would be crazy to consider boring these tool steel cylinder liners that are already relatively thin walled.  Clearly, these are meant to be throw away cylinders, if you get to a point where they need bored.  With that said, this just boils down to a compression thing in my judgement.

Thanks,

dnlpnd

[HD Street Performance]

There is no over thinking going on just planning to make a good combination of parts.
And how can a compression ratio be decided without knowing the camshaft choice? So are pistons that important now?
And how can that be defined without knowing the flow characteristics of the heads. Air speed based on csa and flow potential. Goals at the finish of the build?
Your head porter should provide this data to you and help you make an informed decision on all of the parts including the pipe and tune.
Not over thinking is getting the Harley parts and bolting it together with a 259 cam. Others have gone over 130 tq with a great curve, and that will light your fire not a big hp number.

[FLSTFI Dave]

Besides, who wants to pay for the pistons twice as both 117 kits include pistons?

Thanks,

dnlpnd

You can just buy the cylinders, no need to buy the kit.  The only part you can not by are the 117 badges that go on the heads.