I have a chance to pick up a 103" motor that has a cam and head work for a decent price. It is to replace my 96" motor in a 2009 Road King Classic.

I was wondering if the fuel injection is the same on a 103"?

I have a Thundermax tuner so will it just be a case of picking a tune that is close and letting it learn?

I don't know a lot about the motor yet so I cannot give specifics on year and such.

 

Unless the lower unit on your 96" motor has grenaded, you don't t need a 103" motor to replace it. Bore your cylinders, install a set of SE cast pistons, have your heads worked, install a cam set, get her tuned and call it good........

What's the link for?

 

I believe the EFI will be the same.. If it don't come with a throttle body, you can use the one off the 96..

If you got the Tmax figured out on the 96, going to 103 will be a cakewalk.. One minor issue might occur if the 103 has a throttle body with larger injectors.. Thunderheart can take take care of that for you or anyone with the advanced user licence.

 

Is the 103"motor an A or B motor?
If you don't know any specifics on the motor yet, it's going to be kinda' difficult to give you any answers.

 

Thanks guys! The link is a camera in my shop.

It would cost about the same to upgrade my engine so I get an upgrade with less miles (mine has 50,000). I will sell my 96" when done so even less out of my pocket. I will find out more about the motor today.

 

I did the swap used my old throttle body and injectors, no problem, I had to because my 07 is cable throttle, the 2015 103HO I put in was TBW. Works awesome....I would do it again. The fuel is controlled by your ecm or Fuel mngmt , in my case, I just got a map for my Power Commander 5 for a 2015 103HO bike and voila.

 

My poor 08 Ultra has 125K miles on her so I have been thinking of doing the motor swap to a 103 to get a refreshed bottom end and revived top end. I have the Dobeck fuel managent system on mine but the damn thing just runs so good I will have to wait till she dies. I'm in no hurry....but good to know that a newer 103 will bolt up to my tranny and primary.

 

 

A few options actually. I have a 2010 96" RKC and I'm going with a FM 107 eventually, I recently bought a set of 103 ACR heads as I'll need compression releases and don't want manual buttons.

I'm sure you could wire the ACRs into your '07. I don't think your bike has ACR capability in the main harness like my 2010, but you could still wire them to the starter circuit, others here have done that. I assume you could also use 96" heads with MCRs, but that's not as elegant a solution as wiring in ACRs.

 

I know, I know this is a wicked old thread, but my question applies specifically to this issue so bare with me. When you did the swap how did you approach the differences in the motor mounts? I am swapping a 103 motor and trans from a 2014 into a 2006 Street Glide frame. The TCA motor is rubber mount. The frame for the 06 is not. Anything else that I will run into that you can think of off the top of your head? Appreciate your time.