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


Step by Step instructions for
Installing a Camshaft in your motorcycle
Page 5

Carefully replace the gearcase cover. Replace the gearcase cover bolts in the proper holes and tighten to the designated torque. If you had removed a torque arm, now would be the proper time to re-install it.
If the stock pushrods are used:

Place the pushrod tube assemblies onto the lifter blocks. The tubes can be pushed into place in the O-rings.

Set the lower rocker boxes in place, but do not bolt it in.

OEM Pushrod Color Codes

Front Exhaust is Green

Front Intake is Yellow

Rear Intake is Blue

Rear Exhaust is Purple

Drop the pushrods into place, through the head and pushrod tubes, onto the lifters. The pushrods are color coded and must be installed in the proper order.

Finish installing the rocker boxes.

Complete the installation of the pushrod tubes.

If adjustable pushrods are used:

Make the pushrods as short as possible.

Place the pushrod tube assemblies into the upper O-rings. Holding the lower pushrod tube up, place the pushrod up through the tube and position the adjustable end over the lifter.

Tighten the lifter enough to prevent the pushrod from falling out of place. Use a tie wrap or clothes pin on the pushrod to hold the pushrod tube above the adjuster.

After installing all pushrods, perform final adjustments on the pushrods per the manufacturer's instructions.

Complete the installation of the pushrod tubes.

Install the timing cup on the end of the camshaft and carefully tighten the bolt. Do not over tighten.

Replace the timing sensor plate. Remember to align your scribed mark on the timing sensor plate with the mark in the nosecone cover. Tighten the timing sensor plate in place.

Now would be the time to rotate the engine several times by hand. Raise the rear wheel off the ground. With the transmission in 5th gear, turn the rear wheel to rotate the engine. There will be some resistance as the lifters open and close the valves, but the engine should rotate completely. If the engine will not rotate 360 degrees, the alignment between the cam and pinion gears may not be correct.

Replace the timing cover plate.


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 -+-