How do you break in a motorcycle engine after rebuilding?
The first time you restart the motor after a rebuild should be a static run. Wheel the machine outside or make sure you’re in a well-ventilated space. Then, start the engine and bring it up to operating temperature while gently varying the throttle between idle and 50% open. Don’t go over 50% throttle at this point.
How long does a rebuilt motorcycle engine last?
I have seen rebuilt engines last as little as 5000 miles when the rebuild was done down to a budget and, for example, it was not re-bored and fitted with new pistons, whilst other rebuilds done to a really good standard with all new parts and careful assembly can easily last over 100,000 miles.
Why would a rebuilt engine burn oil?
If a rebuilt engine is run-in improperly, a newly rebuilt engine can burn oil from the first time it is cranked. The engine should be run gently, at varying speeds, and shut down every 10–15 minutes to check oil, water, for leaks, etc.
How much fuel per hour does an EFI system need?
The answer is: no EFI system is capable of making horsepower, it can only support the power potential of the engine, and the fuel injectors are the limiting factor. A naturally-aspirated gasoline engine will require anywhere from.4 to.45 pounds of fuel-per-hour, per horsepower.
How does the EFI system on a classic car work?
The stock carbureted fuel pump then feeds low-pressure fuel to the sump tank reservoir, and when the engine is running, high-pressure fuel is fed from the sump to the throttle body. Left is the sump system from FiTech, and the Edelbrock EFI sump is on the right.
Can a throttle body EFI kit increase power?
When it comes to pulling a carburetor off your engine and replacing it with a throttle body EFI kit, a measurable increase in power is not usually an end result. That is because a properly-sized manifold and carburetor can make as much peak power as EFI.
When did electronic fuel injection ( EFI ) work?
All that changed when the first motorcycle pollution laws were enacted in 1979. Initially, most of the OEM’s simply leaned out their jetting, but that led to other problems, and it soon became obvious that a better solution was needed. Initially, it looked like improved carburetors might be the answer and for a time it was.
The answer is: no EFI system is capable of making horsepower, it can only support the power potential of the engine, and the fuel injectors are the limiting factor. A naturally-aspirated gasoline engine will require anywhere from.4 to.45 pounds of fuel-per-hour, per horsepower.
The stock carbureted fuel pump then feeds low-pressure fuel to the sump tank reservoir, and when the engine is running, high-pressure fuel is fed from the sump to the throttle body. Left is the sump system from FiTech, and the Edelbrock EFI sump is on the right.
When it comes to pulling a carburetor off your engine and replacing it with a throttle body EFI kit, a measurable increase in power is not usually an end result. That is because a properly-sized manifold and carburetor can make as much peak power as EFI.
Can a carburetor make more EFI than a manifold?
That is because a properly-sized manifold and carburetor can make as much peak power as EFI. That being said, EFI does tend to produce a broader torque curve, which can be beneficial — especially in a street car.