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[TXGator]

Without being over techy, can someone explain the numeric identifiers on the SE versions?  I just want to know if I should really plan on stage (whatever) and which one really makes sense (most bang for the buck).

Thanks from a very new owner.

Take Care.

[kojak]

People have different ways to describe Stage 1 vs Stage 2 vs Stage 4. Below is Harley SE kits available for a stock 96 ci engine for comparison purposes. I have highlighted the additional mods as you move down the kits.

This Stage 1 Big Bore Kit lets you increase the displacement of your Twin Cam 96™-equipped model from 96 cubic inches (1584cc) to 103 cubic inches (1690cc).
Includes Big Bore cylinders, Big Bore flat top piston assemblies and a Stage I Air Cleaner Kit with one-piece back plate, integral breathers, all mounting hardware, and gaskets
High-performance clutch spring is included.


The Stage II Big Bore Kit provides the parts you need to increase the horsepower of your EFI-equipped model. The 50-state street legal kit increases the displacement of your Twin Cam-equipped model from 96 cubic inches (1584cc) to 103 cubic inches (1690cc).
Includes Stage II (SE-255) cams, Big Bore cylinders, Big Bore flat top pistons, clips, and a Stage I Air Cleaner Kit with one-piece back plate, integral breathers, a high-performance clutch spring, all mounting hardware, and gaskets




Stage 4 Kit includes Screamin' Eagle® CNC Ported Factory Cylinder heads, 58mm ETC throttle body, SE-259E cams, 10.5 to 1 compression pistons, Perfect-Fit pushrods, SE clutch spring, and all required engine gaskets
Street Performance kit produces 103 hp and 110 ft-lbs of torque
All EFI-equipped models require ECM calibration (priced separately)

[TXGator]

Thanks Kojak2

So I am starting to think that this was a dumb question to ask.  I guess then that on the 110 ci engine there are no stages to add on as such?

Thanks for the help again...

[grc]

Thanks Kojak2

So I am starting to think that this was a dumb question to ask.  I guess then that on the 110 ci engine there are no stages to add on as such?

Thanks for the help again...

The CVO engine is already considered to be a Stage I engine, since it comes from the factory with increased displacement, a high flow air cleaner, and a somewhat lower restriction exhaust system.  You can still go to Stage II by adding a bolt-in cam.  Stage III would involve a cam change and compression increase.  Stage IV usually involves adding headwork and possibly higher performance cams to the Stage III mods.  Harley has a Stage III kit for the 110 engine in the SE catalog that includes 259e cams and 10.5:1 compression pistons. 

All such mods will also require proper tuning of course.

Jerry

[TheHern]

Thanks Kojak2

So I am starting to think that this was a dumb question to ask.  I guess then that on the 110 ci engine there are no stages to add on as such?

Thanks for the help again...

I'mglad you did ask as I was wondering the same things myself ...   

[RoadDawg]

Not a dumb question at all. I've often considered an upgrade, but it's a struggle considering I don't know much of a difference it would make in HP and TQ. More importantly, I don't know how it would alter the seat-of-the-pants affect. I like low to mid-range torque, and the 255 cam that comes with the 110 provides this. Also have to consider engine life when you upgrade. I wouldn't want to spend thousands of dollars for a bump of only 10 ft pounds of torque. Lots to think about.

[kojak]

Depends what engine you start from. You can go from a 88 to a 95, 96 to a 103 or 110 etc. For majority of riders, bolt-on mods and a mild tune is the way to go, doesn't void the warranty and keeps you engine basically stock and reliable.
On my CVO bikes, I usually just change slipons and leave the rest alone. Now that the non cvo bikes (2014+) come stock with 103 and the SE255 cams, I would probably only change the intake and slipons and be done with it. But I don't worry about the fastest 0-60 time, only worry about passing oomph at highway speeds and climbing steep inclines loaded up and rarely ride obove 80 mph so its all about low and midrange torque for me.

[Dr.D]

Not a dumb question at all. I've often considered an upgrade, but it's a struggle considering I don't know much of a difference it would make in HP and TQ. More importantly, I don't know how it would alter the seat-of-the-pants affect. I like low to mid-range torque, and the 255 cam that comes with the 110 provides this. Also have to consider engine life when you upgrade. I wouldn't want to spend thousands of dollars for a bump of only 10 ft pounds of torque. Lots to think about.

Hey RoadDawg that 259e cam, hc pistons and headwork would do very well in that CVO Breakout and a 2 into 1 Propipe would be a good finish. I did that on my 2009 CVO Fatbob and it really is super strong. I am not so inclined to put the same cam and all in the Limited because they are different bikes with different purposes.

In my experience the stage one of just a breather, pipes and a tune does not add a lot of performance. You need a cam plus compression to make a real gain, IMHO. Displacement changes are nice but if you do that much go further with the cams and pistons or you might come out a little disappointed. I did several times.

[RoadDawg]

Hey RoadDawg that 259e cam, hc pistons and headwork would do very well in that CVO Breakout and a 2 into 1 Propipe would be a good finish. I did that on my 2009 CVO Fatbob and it really is super strong. I am not so inclined to put the same cam and all in the Limited because they are different bikes with different purposes.

In my experience the stage one of just a breather, pipes and a tune does not add a lot of performance. You need a cam plus compression to make a real gain, IMHO. Displacement changes are nice but if you do that much go further with the cams and pistons or you might come out a little disappointed. I did several times.

Thanks, Dr. D. I might just do that.

[TXGator]

Thanks everyone..  Appreciate the info...  I think I am going to make sure I have a good seat on her the way she is and then think about the upgrades.  It does help understanding.  Not sure if I will ever turn a wrench on the bike but it helps knowing my options.

Take Care.