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
62.5 HP

Performance and Technical information on Stage 1 engines for Harley-Davidson motorcycles.

Basic Stage one Engine Design

What happens when your cash outlay for a Stage 1 engine is under $150? If you have done your homework like Brett Jacobs, you don't give up any performance. Here is an excellent example of low cost and good power. Brett and C&H Motorcycles in Spartanburg, S.C. deserve a lot of credit for a great job of tuning.

Brett's Comments:

My Fatboy now runs awesome and beats in a drag race a few of my friends that spent over $1000 on their EVO and thought they were bad asses. :) Their jaw drops when I start to pull away from them at a red light. They think I'm lying to them and have a cam installed. Haaaa! What is even funnier, my total cost was $140 and a few hours of my time.

YOU ARE THE MAN!!!!!!!!!!! Thanks again.

Best Regards, Brett Jacobs

Year: 1998
Model: EVO
Bore: Stock
Stroke: Stock
Displacement: 1340cc
Cases: H-D
Assembly: H-D
Crankshaft and Flywheel: H-D
Heads: H-D
Intake Valves: Stock Diameter
Exhaust Valves: Stock Diameter
Valve Springs: H-D
Porting: None
Compression Ratio: 8.5:1
Pistons: H-D
Cam: H-D
Pushrods: H-D
Carb: Stock Keihin CV with Yost CV Master Kit.
Carb Jetting Information: Needle set in 3rd clip from top, 175 main jet, 48 slow jet installed
Manifold: Stock
Air Cleaner: K&N OEM replacement, Modified HD air box
Ignition: H-D Stock
Ignition Timing: 32 BTDC
Coil: Stock

Plug Wires: Stock
Pipes: H-D Stock with baffles removed
Pipes: H-D Stock with baffles removed
Owner: Brett Jacobs
Dyno Tuning Facilities:
C&H Motorcycles, Spartanburg, S.C.

62.5 HP @ 5000 RPM
74 ft. lbs. Torque @ 3800 RPM

wpe3.jpg (15783 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 -+-