Get XiED(tm)! Performance Parts

Don't let the Harley heat monster ruin your riding.
Reduce  Engine Surging
Improve Throttle Response
Reduce Engine Ping


HD 2007/2008 Engines

High Heat on 2007/08 HD engines

HD 2007/08 Performance Recommendations

Cool your exhaust temperature with the Wide Band O2 upgrade for 2007/08 HD

Harley Camshaft Specification Tables

HD Twin Cam Engine Builds
TC 128 HP 95 CID
TC 100HP Street Engine

The basics of Fuel Injection explained

Rammer Performance Air Cleaners
TC Performance Heads 100+HP

Pro Tuning on a Shade Tree Budget

Engine Performance Dyno Runs
84 HP XL
Performance and Technical information on Stage 2 engines for Harley-Davidson motorcycles.
How to classify a Sportster engine with Buell heads? We are going to consider it a Stage Two engine because they are standard equipment on the Buell and  a bolt on component for other Sportster based engines.
These results are impressive for a street 1200. If you are looking for a fast way to bolt on power, the Buell heads are the way to go. If you look at the specifications closely, you will see that with the carburetor was modified to the CV carburetor specifications listed on this WEB site. The bike also uses nothing but Screamin Eagle slip ons for an exhaust system. All things considered, this is an excellent example of a set of conservative components installed and properly tuned giving above average results.

Stage Two Engine Specifications

Owner: David Reed, Osage Beach,Mo.
Year: 1994
Model: XL
Bore: stock
Stroke: stock
Displacement: 1200 cc
Cases: H-D
Assembly: owner
Crankshaft and Flywheel: H-D
Heads: Buell Thunderstorm
Intake Valves: stock
Exhaust Valves: stock
Valve Springs: stock
Porting: none
Compression Ratio:Stock
Pistons: H-D
Cam: Screamin' Eagle
Pushrods: H-D
Carb: CV w/Bike Tech Modifications
Manifold: H-D
Air Cleaner: 
Ignition Timing:
Pipes: OEM with Screamin' Eagle Slip Ons
Dyno Tuning Facilities: Worth Harley Davidson..Belton Mo.(816)331-2222

84 Horsepower
74 Foot Lbs. Torque
1200 XL

david_reed_dyno.gif (12378 bytes)


Table of Contents
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Modification, Installation, Maintenance and Tuning Index  will help you find most of the information you want on one page.

How to get Professional Tuning Results at home
Testing the Innovate Motorsport LM-1 portable air fuel meter

Profession Tuning on a Shade Tree Budget

Veypor VR2 Data Logger and Instrument Panel
Video Installation and Demo
Purchase VR2

Engine Performance
How to Build a
TC96 2007 Engines
TC88 70HP Stage1  
TC95 128HP Stage 3
TC95 100HP Street
TC96 2007 Stage 1/2
EVO 64 HP Stage 1
EVO 74 HP Stage 2
EVO 82 HP Stage 3
EVO 95 HP Stage 3
883 to 1200 Upgrade
Shovelhead Modifications

New EFI for EVO and TC

Performance Gallery
Horsepower Gallery
Evolution 80
Twin Cam 88/95
Evolution Unlimited
Sportster Unlimited
Drag Strip Gallery
Land Speed Racing Gallery
CV Carburetor
Modifying the CV carb
Tuning a CV carb
Selecting a cam
Install a TC 88/95 cam
Install a Big Twin cam
Install Sportster cams

Camshaft Specifications
Twin Cam

Exhaust Systems
EVO Exhaust Testing
TC Exhaust Testing
Khrome Werks AR100 test
Making Drag Pipes Work

Shop Manual
Carburetor Troubleshooting
Finding Manifold Leaks
Cylinder Heads
Pistons and Cylinders
Belt Drive
Shop Manual Appendix
$20 Bike Lift
Plug Wires
Spark Plugs
Engine Tuning
Nitrous Oxide
Motor Oil
Stutter Box
General Information
WEB Links
Buy Books and Manuals
Performance Calculations
Estimate Horsepower
Estimate 1/4 Mile Time
Estimate Top Speed

Engine Displacement
Exhaust Length
Gear Ratios
Air Density

The Nightrider Diaries
The ramblings of a genius a, a madman and something in between.

Where is Sifton Cams?

Autocom Active-7 tested

Harley-Davidson EFI
-EFI basics explained
-EFI modifications explained

183 HP, 2 carbs, 2680cc

Copyright 1997-2006  Stephen Mullen, Oldsmar, FL -+-