Se 120r complete engine?
Elite HDF Member
Joined: Nov 2006
Posts: 3,909
Likes: 6
From: Livingston, Texas
I had the Kit versus the Crate installed which comes with the 58mm TB. The clutch is the Screamin Eagle Pro Race Clutch, stiff as hell and would not recommend it for most people. I like the clutch, but have a very healthy grip.
The only changes/upgrades were the SE roller rockers.
The only changes/upgrades were the SE roller rockers.
I'm 60 and not as tough as I used to be.
I have the SE Diaphram spring in my bike now.
It was pretty stiff at 1st. but let up some over time.....
Did the kit come with a Flywheel ?
Elite HDF Member
Joined: Nov 2006
Posts: 3,909
Likes: 6
From: Livingston, Texas
But would you be afraid of the pressed together crank or anything in this motor.
I'm thinkin about replacing my 103 with one.
"Seeker of Freedom"
Joined: May 2007
Posts: 1,093
Likes: 2
From: Kansas City Area
Harley has enough confidence in the crank to create a new race category just for this motor and one of the rules is no modifications to the crank.
http://www.ahdra.com./rulesdb.html
Here's the Kit info:
B. Screamin E agle
Ž Pro 120ci R ace Kit
Show the competition you mean business when you drop a
fire-breathing 120ci race engine into the frame of your track
bike. A sledge-hammer hitting performance upgrade, this
complete kit provides everything you need to bring your T win
Cam engine to 120 cubic inch displacement with the potential
of 135+ HP. Kit includes 4-5/8" stroke Premium Flywheel
Assembly, 58mm throttle body, SE-266E cams, forged 10.5 to
1 compression ratio nickel-plated pistons with wear-reducing
Teflon-coated skirts, and CNC-ported MVA heads with automatic
compression releases. Kit also includes Perfect Fit
pushrods, Screamin E agle
fire-breathing 120ci race engine into the frame of your track
bike. A sledge-hammer hitting performance upgrade, this
complete kit provides everything you need to bring your T win
Cam engine to 120 cubic inch displacement with the potential
of 135+ HP. Kit includes 4-5/8" stroke Premium Flywheel
Assembly, 58mm throttle body, SE-266E cams, forged 10.5 to
1 compression ratio nickel-plated pistons with wear-reducing
Teflon-coated skirts, and CNC-ported MVA heads with automatic
compression releases. Kit also includes Perfect Fit
pushrods, Screamin E agle
Ž Super T uner, gaskets and lower
piston cooling jets. Stroker flywheels are manufactured from
high-strength steel with an increased press fit for the crankpin
to enhance high-RPM reliability. R equires separate purchase
of appropriate high-flow injectors and a high-performance
clutch upgrade. Just add your choice of race exhaust, highflow
air cleaner, and tuning. Installation requires crankcase
machining by a qualified machinist. Dealer installation is
piston cooling jets. Stroker flywheels are manufactured from
high-strength steel with an increased press fit for the crankpin
to enhance high-RPM reliability. R equires separate purchase
of appropriate high-flow injectors and a high-performance
clutch upgrade. Just add your choice of race exhaust, highflow
air cleaner, and tuning. Installation requires crankcase
machining by a qualified machinist. Dealer installation is
recommended. For race application only.
Club Member
Joined: Jun 2007
Posts: 45,429
Likes: 2,898
From: Bedford UK
What more would you like to know? If you 'search' on '120R' you will find several recent threads on them. Worth getting a beer and taking a look!
"Seeker of Freedom"
Joined: May 2007
Posts: 1,093
Likes: 2
From: Kansas City Area
- The automatic compression releases are great, bike is easy start almost every time. It doesn't like extreme cold starts, below 15*C. It hasn't failed to start, but takes a little more cranking to get her to fire up. Think I'll have the tuner check it out for that.
- General around town driving takes time to adjust to the screaming eagle race clutch. It takes time to adjust to the hard pull and the available torque requires retraining of your autopilot clutch skills.
- This motor will go through rear tires if you do not have the will power to stay out of the throttle. It is far too easy to light up the rear tire.
- Fuel milage varies greatly between 35 and 45 mpg. The SE120R begs you to roll on that throttle. When you do and trust me you will it drinks gas like an elephant drinks water. However, when you ride like a sane person keeping the highway speeds under 70mph it'll get 40-45mpg.
- Gear ratios, wow this thing definately gives you another gear. 6th isn't needed below 60 ever. It'll sure change your shifting habits or at least for most it will.
- The powerband is pushed a little to the right for most, but even on the low end of the RPMs this thing is a beast and can handle any situation you demand of it. It just creates lots of power really fast which takes getting used to. This motor is fast, it is not a slow power developer. My streetglide hits 120mph like it was nothing and feels like it has a whole lot more. I find myself watching the speedo more because it does like speed. You'll find yourself strolling along the highway at 90mph and swear you were only doing 60mph.
Elite HDF Member
Joined: Nov 2006
Posts: 3,647
Likes: 11
From: Stockbridge, GA (Atlanta)
thanks for the info
I've got about 2000 miles on the SE120R now. Here's some thoughts.
- The automatic compression releases are great, bike is easy start almost every time. It doesn't like extreme cold starts, below 15*C. It hasn't failed to start, but takes a little more cranking to get her to fire up. Think I'll have the tuner check it out for that.
- General around town driving takes time to adjust to the screaming eagle race clutch. It takes time to adjust to the hard pull and the available torque requires retraining of your autopilot clutch skills.
- This motor will go through rear tires if you do not have the will power to stay out of the throttle. It is far too easy to light up the rear tire.
- Fuel milage varies greatly between 35 and 45 mpg. The SE120R begs you to roll on that throttle. When you do and trust me you will it drinks gas like an elephant drinks water. However, when you ride like a sane person keeping the highway speeds under 70mph it'll get 40-45mpg.
- Gear ratios, wow this thing definately gives you another gear. 6th isn't needed below 60 ever. It'll sure change your shifting habits or at least for most it will.
- The powerband is pushed a little to the right for most, but even on the low end of the RPMs this thing is a beast and can handle any situation you demand of it. It just creates lots of power really fast which takes getting used to. This motor is fast, it is not a slow power developer. My streetglide hits 120mph like it was nothing and feels like it has a whole lot more. I find myself watching the speedo more because it does like speed. You'll find yourself strolling along the highway at 90mph and swear you were only doing 60mph.
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Road Warrior
Joined: Jan 2008
Posts: 1,995
Likes: 2
From: Land of 10,000 lakes
That isn't what all of us not riding a bike with the 120R wanted to hear. We all wanted to hear that it wasn't fun to drive or started miserably and generally was a PIA to own. Now we all aspire to own one! I think I'll order mine tomorrow!
Club Member
Joined: Jun 2007
Posts: 45,429
Likes: 2,898
From: Bedford UK
itsaw0rkinpr0gre$$, thanks for those words, the best I have seen so far that give us an idea of what these motors can do. I want some of that! Problem is I need to change my bike first.....
I convinced myself I could justify a 131" billet motor in my Evo Glide, now I know I wasn't lyin'!
I convinced myself I could justify a 131" billet motor in my Evo Glide, now I know I wasn't lyin'!