Se 120r complete engine?
Page 28 describes the 120 and 131..................page 20 has the 120R Threw Harley....get it?? They are 2 different motors. And I dont know if its cheaper but am going to check......The "R" is the race version evidentally.......
Its a race motor..................There is no Flash................The "flash" does NOTHING but raise your redline to 6200......You will HAVE to get a tuner of some sort....
2 different makers. The SE is hand assembled alongside Harley-Davidson’s production twin Cam engines at the Pilgrim road engine Plant in Milwaukee. Jim's are made by Jim's. THEY ARE NOT THE SAME ENGINES.
Last edited by Dick1964; Aug 5, 2010 at 06:59 PM.
The Best of Harley-Davidson for Lifelong Riders
I understand there is two 120" motors listed in the SE catalog.
SE120R
&
JIMS120
However, my question was related to this statement:
"you realize there is a "standard" 120 on page 28 that comes with a 263 cam"
Where is the 3rd "standard" 120 on page 28 that comes with a 263, all I see are JIMS engines on page 28. The whole page 28 is dedicated to JIMS 120&131 raceing engines.
A motor that flirts with 130 HP has to breath & while the FC rocks on smaller motors & even some "torque-centric" bigger motors, it just won't flow enough for something like this mystery 120R.
Better be look'n for a Boarzilla.
As far as the motor goes, I sure wouldn't be lined up for any of the 1st ones. Let someone else find the shortcomings (crank, crank bearings, cam, etc) & you'll significantly improve your chances of satisfaction....
Additionally, building a motor for some ridiculous HP "#'s" does not bode too well for what the typical Bagger Dude is after ~ TORQUE. I know that it's gonna have decent torque, but it sure looks like the focus is more on higher RPM power, than low ~ midrange.
But then, WTF do I know.....
Last edited by PhilM; Aug 5, 2010 at 07:30 PM.



I already have a fat cat. Just needed a motor to go with it.