What is the size of the throttle body?
Modern motors are equipped with 90mm and dual 75mm throttle bodies right from the factory. Contrary to popular belief, a larger throttle opening does not reduce low-speed power, but the effect on throttle response can be dramatic.
How do I measure my throttle body?
Measuring Inlet Diameter
- Open the hood of your vehicle, and visually locate the air intake tube.
- Remove the air intake tube, using a 3/8-inch drive ratchet and socket to remove the clamps.
- Measure the inner diameter on the front of the throttle body.
- Write the measurement down on a piece of paper.
How big is the throttle body on a Harley Davidson?
There are several throttle bodies sizes used over the years. There has never been a 58mm used on a stock bike. The sizes I remember are 46, 50 and 54 but I think there is more.
What size is the OEM throttle body on the 103ci Softails?
Can anyone tell me what size the OEM stock throttle body is on the 2012 103ci softail. I cant find nothing online anywhere. If anyone knows the part number please let me know.
Is there a way to calculate ideal throttle body size?
Rule of thumb is to go 10% over because a naturally aspirated engine can go above 100% volumetric efficiency. Go above that and you will kill low end because of reduced velocity, go below that and you starve the engine for air at top end. 110% is volumetric efficiency is 319cfm.”
When do you know you have a bad throttle body?
If you notice that your car has a very uneven acceleration – sometimes it is fast and sometimes slow, you might have a bad throttle body. Misfires occur either when the air-fuel mixture is very wrong or when it comes to a weak spark from the spark plug.
There are several throttle bodies sizes used over the years. There has never been a 58mm used on a stock bike. The sizes I remember are 46, 50 and 54 but I think there is more.
How big should a HPI throttle body be?
HPI cuts them in half & fits a manifold to the rear of the fly-by-wire throttle bodies. This is a nice improvement. If you have a good set of heads that flow well wait till you can afford a new throttle body. You’ll be better off. As far as size goes I size them according to their intended purpose.
What should I look for in a throttle body?
Not just a throttle body size. Intake port diameter also play’s into the mix.I would contact HPI (Horse Power Inc.). They will get you the right bore size and intake port for your application. This is our experience.
How big should the throttle body be on a Delphi?
If you are running an early Delphi unit and you have gone to 95″ with head work and 10:1 compression, you will see “across the board” increases with a bored and ported throttle body. You don’t have to go the larger injectors, but there was a seat of the pants feeling with the replacement throttle body.