Is an engine swap of 114 into a 107 bike a simple plug and play or are there other issues that need to be addressed? Bike would be a 2020 - 2022 Street Glide Special.

 

BCM & ECM come to mind as being mentioned as different

 

Blown 2020 107 out of warranty? Found a wrecked 2022 114?

 

see 107's w/ 30K on them selling cheap (mid to high teens) and need a project. Have cash set aside to buy a 2023 SGS or CVO but enjoy the build as much as the ride.

 

I’d buy the 107, get a big bore kit, cam, breather, tuner, etc.
Going from a stock “ish” 107 to 114 is not a lot to gain, you’d be on better footing leaving the 107 and upgrading that.
Still be a build and will be easier to source and install parts rather than swap power plants….

 

"All things in moderation except acceleration, have cash set aside, and enjoy the build as much as the ride" All of these things suggest to me to build a cheaper bike as opposed to buying a new CVO. Plus with the M8 its so much easier and cheaper and more reliable per HP than with previous motors.

Personally I prefer to start with a 107 as it has the shorter 4.375 stroke. Which is already a relatively long stroke. If you are building a two up trailer toating touring motor you want the longer stroke even a 4.625. But if you want to make HP and retain maximum reliability you might prefer the shorter stroke. All things being equal best naturally aspirated HP comes through rpm. A shorter stroke has less piston speed and less piston side loading at the same rpm which leads to better ring seal and piston / cylinder life. True the difference in stroke is not dramatic so perhaps to the rpm and horsepower level you wish to attain its negligible and the additional displacement out weighs that. That's for you to decide just sharing my thoughts. If you are building a 170 HP motor and want it to live the longest while regularly seeing 6500+ rpms perhaps its a fair consideration.

 

this 😊

 

Thanks all! I tend to ride one up and between 2,250 and say 3,750 rpm. Will def consider the 107 and a TQ cam & tune. Being over a half century old I save the WFO for the dirt.

 

Using a 107 to 114 big bore kit will increase torque (~10lbs) and provide an acceleration noticeably better than the 107. Overall a nice easy effective and inexpensive change. Add a cam and hold on!
Bob

 

People who say this often fail to realize that a larger displacement engine makes more power everywhere than a smaller one, all else equal. There is no replacement for displacement.