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Engine Related Engine Builds and more for Road Glides

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post #1 of 11 (permalink) Old 04-20-2017, 01:03 PM Thread Starter
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motor swap

Can you swap a 2013 motor into a 2015?

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post #2 of 11 (permalink) Old 04-20-2017, 01:28 PM
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Can you swap a 2013 motor into a 2015?
Yes. Same cases on the engine and same frame from 09' - 16'. The only difference in motors that HD makes that cannot be swapped is between the A and B motors. The B motors like that is in the Softails will not fit into a FL or Dyna frame and an A motor will not fit into a Softail frame.


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post #3 of 11 (permalink) Old 04-20-2017, 02:05 PM Thread Starter
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Yes. Same cases on the engine and same frame from 09' - 16'. The only difference in motors that HD makes that cannot be swapped is between the A and B motors. The B motors like that is in the Softails will not fit into a FL or Dyna frame and an A motor will not fit into a Softail frame.
Great thanks!

Now need to find a used 110 motor to build out
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post #4 of 11 (permalink) Old 04-20-2017, 02:38 PM
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Great thanks!

Now need to find a used 110 motor to build out
Message Smarty to get some input on what he did. He just did a 110 build on his bike that is very nice.
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post #5 of 11 (permalink) Old 04-20-2017, 02:55 PM
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Motor swap

I do not know and this is just a question. Did HD do anything different to the electronics that monitor etc, the engine for proper engine function from the 13 to 15? I just am wondering if they did changes in the background that does not come out in normal discussions.

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post #6 of 11 (permalink) Old 04-20-2017, 03:54 PM
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Great thanks!

Now need to find a used 110 motor to build out
Just an FYI amigo, that cat the did the build on my shitbox used my sale cash to build a FatBoy - He was all set to go FatBoy S with the 110 but found out that the 103 was the better plant to build off if you want to get nutty......like you do - I guess a lot of 110s have gone boom due to being just drilled out 103s and losing that valuable wall space - I may be talking out my ass (happened back in '97 once) but have heard this a few times (a lot of Low Rider S's have gone boom with the 110) and knowing that the rich bastard who built my sled could have used anything on the market...went 103 over the 110 in terms of a "stronger" build

Just something to think about
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post #7 of 11 (permalink) Old 04-20-2017, 05:04 PM
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I do not know and this is just a question. Did HD do anything different to the electronics that monitor etc, the engine for proper engine function from the 13 to 15? I just am wondering if they did changes in the background that does not come out in normal discussions.
Motors are the same though. All of the electrical changes are on the bike and you will just remove from the original motor and reuse on the new motor.


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post #8 of 11 (permalink) Old 04-20-2017, 05:16 PM
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Just an FYI amigo, that cat the did the build on my shitbox used my sale cash to build a FatBoy - He was all set to go FatBoy S with the 110 but found out that the 103 was the better plant to build off if you want to get nutty......like you do - I guess a lot of 110s have gone boom due to being just drilled out 103s and losing that valuable wall space - I may be talking out my ass (happened back in '97 once) but have heard this a few times (a lot of Low Rider S's have gone boom with the 110) and knowing that the rich bastard who built my sled could have used anything on the market...went 103 over the 110 in terms of a "stronger" build

Just something to think about
110's have many more options to build upon now and most of those issues are not true anymore. You can always find the example you stated though with about any motor. True a 103" is a great platform but new kits even from the aftermarket are making the 110" a great place to start from as well. Some companies 113" or 117" kits are right on par with the 120's in some cases. I used to feel just like you and have even said so on other threads on this forum but I have been riding with some converted 110's that have started changing my mind. Yes, I have seen a couple getting up there in some mileage as well and still going strong. With that said.... Unless you need to save a couple of k I would just do a 120 or 124 and go from there but you can find a great deal on 110's out there. Smarty just did a 110" build in his bike and his Tq curve looks amazing from low to high rpms. Maybe he will chime in and give his thoughts.


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post #9 of 11 (permalink) Old 04-20-2017, 11:09 PM
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Thanks Ken. The 103 to 110 I just built is one of the strongest build in the 110 size out there to date with 10:45-1 compression and is perfect for touring. Puts out 127/127, not lazy by no means. Reasonable cost I might add. T-Man 585 cams that really perform. This with 103 ported heads.


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post #10 of 11 (permalink) Old 04-21-2017, 07:01 AM
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Thanks Ken. The 103 to 110 I just built
That is what I am talking about.........a 103 Plant to build to the 110.......not the 110 Base motor to build off of.

If the actual 110 Base Motor has gotten better from last summer (saw a 3 blown Low Rider S 110 and 1 Fatboy S 110 in a span of 2 months) then that is great - My point is the 110 is a drilled out 103 and with the extra Calendar Wall missing.....when you start going bonkers with bolt on kits like 117s and such and all the extra go fast parts, that missing wall is crucial to lifespan.......IMHO - Again, I very well may be wrong and am just going off what I saw last summer and what my builder told me
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