Smart Carb Metering Rod (A-Q Series - 36/38/40mm)
Note1: These Metering Rods are sized for the 36 to 40mm SC2 carbs. If you are running a 26mm to 28mm SC2 you will need a E-f Series Metering Rod.
Enhance your FL250, FL350R or FL400R with a SmartCarb, a truly revolutionary carbureator designed to give you maximum performance all of the time. The genious of this carb is that once tuned to your setup, you no longer have to change the jetting for altitude or temperature. Tuning is also greatly simplified with an easy to change Metering Rod for the Top End adjustment as well as an external Clicker adjustment for the low end. The Clicker allows for easy tuning the low end without needing to open the carb up to change jets.
Metering Rods
You will need to select your Metering Rod size. By factory default, the carb will come with the A-Q07 Metering Rod. This rod is suitable for stock machines. If you have a performance pipe and high flow air filter you will likely want a richer Metering Rod.
Personal Experience
Every mahcine is unique and the best way to figure out how your machine is running is with an Exhaust Gas Temperature gauge.
My own personal FL350R I have the Methodical Performance Pipe and the Oddball ORV High Flow Air Filter setup. My motor is lightly ported with stock compression around 130lbs. I run the A-Q03 Meter Rod and that keeps my EGTs in the 1000F to 1100F range with only occaisional readings around 1200F
Changing Metering Rods
Look at the linked video in the images section for a video on how to change the Metering Rod.
Description
SmartCarb metering rods are precision machined with an angled flat on the down-stream side of the metering rod. The flat, called a grind angle or fuel profile, varies between different metering rods in order to suit the fueling needs of a wide variety of applications, engine characteristics, modifications, and fuel selections. Note that elevation and temperature changes are not considered in metering rod selection due to the SmartCarb’s automatic air density compensation features.
Optimum SmartCarb performance requires both the correct metering rod fuel profile for the given application’s fueling needs and the correct positioning of that profile using the Clicker adjuster on top of the SmartCarb. The bottom end or idle and off idle response is tuned first with assessment of the mid to top performance occurring after. Should the application require either more or less fuel through the mid to top range, a different metering rod selection may be advised.
The fueling differences between rods in the same series are minimal if not identical at idle at the same Clicker setting. Two different rods in a given series will progressively diverge from one another in how much or little fuel they provide through the throttle range relative to one another with the biggest differences occurring at full throttle or wide open. Metering rod richness or leanness is given by the number, with lower numbers being richer and higher numbers being leaner.
View the SmartCarb Metering Rod Guide for more detailed information.
Please refer to Page 48 of your SmartCarb User Manual for instructions on changing the metering rod. Digital manuals are available to view/download here.
Have SmartCarb metering rods that you no longer use? Send them back for a refund or exchange per our Metering Rod Exchange Program.
| Origin | Aftermarket |
|---|---|
| ATV Make | Honda |
