I read on another forum that there was a difference between the EVO motors on the softail and touring models? I know there is a difference with the twin cam but I was not aware that there was any difference with the EVO?

So my question is.... Is there a difference and if not are they interchangeable?

My reasoning, I have a 93 FLHTCU and I have a donor softail that has a 96" S&S motor in it. Will there be any issues if I pull the S&S out of the donor bike and install it into my 93 Ultra?

 

I don't think it's going to be an issue, but if you take the serial number off of the motor and call S&S they'll have a definite answer for you.. what year is the bike is coming out of the Softail?

 

If I recall, the twinkie softails had some kind of balance shaft thing to minimize vibration, didn't they? I don't think any Evo softail did.

 

Yeah thats all i've ever heard as well. The Twin cam softails were counter balanced since they were solid mounted where as the other models were rubber mounted. But until I read that statement on another forum I had never heard that there was any issue with EVO's.

 

I can do that to make sure they were the ones that gave me the original info on the motor, but no mention as to specifics on what type of bike it can be mounted on.

 

I'm pretty sure they were all the same case for mounting..

 

Location of the oil tank was definitely different.

 

The engines are interchangeable.

No matter the oil tank location.

 

I agree with all the above - twincam engines have balancer shafts built in, but all Evos have the same engine. The differences between models are in the primary chaincase, with a longer one for the softails and, I suspect, a shorter one for the FXRs - plus a midway length for the Touring models.

 

Evos are the same.

Twin Cams have a balanced and unbalanced version. The Softail Twin Cams have chain driven balancers on each side of the engine front and rear. Touring Twin Cams have no balancers.

Softails have the long primary. Engine and tranny seperate.

Touring and FXRs have the short primary. Engine and tranny bolted together.