Harley-Davidson performance have been the subject of many books. Many of these books go into detail, right down to the nuts and bolts. Our goal here is to help you understand your strengths and determine what you need and what it takes to make that power.
WHAT IS THE PERFORMANCE
Harley-Davidson performance means different things to different riders. For some, it's just about getting the extra power and better sound from their Harley. Some want to make 100 hp or more for them to stop the lamp light stops running. Or they may want to include one of the dyno drags. It's all good, but when you modify your machines, you can create problems with heat, noise, maintenance, reliability and rideability. Most Harley riders need strength in the range of low to mid rpm.
If your bike will make more power, you would probably rise faster and harder. If you ride harder, you might want to think about upgrading the brakes and suspension.
DEFINE POWER
When you talk about power, do you mean torque, horsepower or both? Torque turning the electricity. It is this low rmp power plays that make you move. Horsepower is the power higher-end spin that makes you move.
If you look at the difference between the Harley-Davidson V-Rod and Harley Twin Cam 96 regular, you will notice that the V-Rod engine with ' years in which puts out more horsepower than the 1584cc Twin Cam, but it puts out less torgue.
The V-Rod puts out this buy horsepower to spin faster. The V-Rod can spin faster because his four valves per ' cylinder and double overhead Cams. It's basically because of the ability to breathe overall V-Rod.
Harley-Davidson Twin Cam and traditional V-Rods has the characteristics of a much different machine that produces different power characteristics. Most Harley riders will remain with their Big V-Twins though V-Rod makes more horsepower. I've been riding the V-Rods and don't like the way they handle.
HARLEY-DAVIDSON BASIC performance
An internal combustion engine is basically an air pump. The faster you spin it, the air is increasingly a process within a specified time. The amount of power produced is regulated by the amount of fuel it burns, which depends on the amount of air can be breathed. More air means more power. Turning faster machines will also improve air flow and the fuel and causing it to make more power.
Compression is also a factor. The machine compresses more air into the combustion chamber, more fuel can be burned in any air/fuel charge. Ignite more fuel, producing more power. Changing the compression ratio can be much more involved than a run on some parts.
USE WHAT YOU HAVE
Harley-Davidson performance can be improved by working with what you have. This is usually done by bolting on a set of slip-on muffler and high-flow air filter, along with remapping fuel injection or carburetor re-stream. The cost will be around $ 1,000 in parts and labor. The Gain is usually around 10 horsepower.
The next step is to replace the stock Cams with them who gave a ride higher and longer duration. By installing the Cams by lifting more (to open the valves more) and with more duration (to open the valve is longer), it's possible to get increased performance from your machine. This can be done without removing the head. Depending on the Cams, it may be necessary to replace the valve spring. These changes can take stock Harley-Davidson from around 65hp up to 85hp.
Beyond this point means going into the machine. Now you're talking about replacing the cylinder, piston, head stock and other parts that go along with it. You'll add quite a bit more power, but you also see some serious money. This is serious money will take you to 100hp or so.
IGNITION
A Harley-Davidson stock ignition is designed to prevent damage to the machine and work with limits set by the Government. Prevent damage to the engine of your investment while protecting obviouisly limiting claim warranty.
Ignition module do this by limiting the engine RPM with the feel of an explosion. Aftermarket module can be set to inhibit the spark and give more thrust at low RPM. Some of the ignition module which is customizable and has many curves of the face. These units priced from $ 200 to $ 500. When you are truly the hop up the engine, the ignition module can help unleash more power.