FCR-Beginners

FCR Tuning - Carburetor Synchronization - Is the Balance of Your Vacuum Gauge Correct?...

I will be writing a column about the zero calibration of vacuum gauge needles. To put it briefly, it's advisable to assume that the zero position of the needles on a four-bank vacuum gauge is generally miscalibrated.

2023-05-05

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FCR Tuning - Is an Air/Fuel Ratio Meter (A/F Meter) a Necessary Equipment?...

Is an air/fuel ratio meter (A/F meter) necessary for tuning the FCR on the CBX1000? Yes, it is. Even if you are not working with a CBX1000, an air/fuel ratio meter is essential for setting up a carburetor.

2023-04-27

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FCR Tuning - Main Jet Change - 2023-04-14...

This post is a continuation of the blog where I talked about the test ride after tuning the FCR on my CBX1000. The change to the MJ (main jet) has been confirmed to lean out the mixture, going from 125 to 120. Although I mentioned in my previous blog that I was unsure which JN (jet needle) to choose, I realized that there is no need to change the JN immediately. Therefore, I decided to start by changing only the MJ.

2023-04-17

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Work at the rental pit on 2023-03-27 - Synchronization of the FCR carburetor and spark plug replacement were completed....

Recently, I completed the front tire replacement for the CBX1000. Today, I finished the FCR synchronization work, replaced the spark plugs, and performed another round of synchronization. Additionally, I have also completed the preparation for an oil change. I replaced the oil filter and drained the oil.

2023-03-29

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What are the disadvantages of a racing carburetor? - Regular maintenance is required....

I will be writing a column about the necessity of maintenance for racing carburetors. Please understand that my views may differ from conventional thinking. It’s likely that many people use racing carburetors in street applications without much consideration.

2023-03-26

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Work at the rental pit - 2023-03-24 - Removal of FCR carburetor. Removal of throttle valve....

Winter Maintenance on the CBX1000 - I’m gradually progressing with the work at the rental pit. It’s better than not making any progress at all. I tried to get as much done as possible, even if it was just for an hour. The tasks completed so far include removing the FCR carburetor and taking out the throttle valves inside it.

2023-03-25

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Which racing carburetor should you choose? FCR, TMR, TMR-MJN, CRS, or others…...

I will write about choosing racing carburetors based on my own biases. This is more of a column-type content and does not necessarily reflect knowledge from personal experience. Besides the Japanese-made racing carburetors mentioned in the title, there are also brands like Dell'Orto. As I love Japanese-made products for their easy parts availability, I will focus on domestic options and not cover foreign products.

2023-03-24

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FCR Carburetor Tuning - Slightly rich or too rich. It's best to keep it at a slightly rich level....

Regarding the tuning of the FCR carburetor on the CBX1000, my recent trend has been to tune it to a slightly rich setting. If the optimal air-fuel ratio is 12.5, I aim for around 12.0, considering that the mixture might lean out when the throttle is opened.

2023-03-23

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Is it easy for beginners to tune an FCR carburetor?...

FCRs have a wide tuning range and are said to be easy to set up... I sometimes see comments like this online, though I'm not sure how accurate they are. In my case, I've only worked on tuning FCRs for the CBX1000, so it's hard to say definitively. However, if you're doing rough and basic tuning, it is relatively simple.

2023-03-16

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I want to synchronize the FCR carburetor myself after installing it....

Whether it's a CBX1000's six-cylinder or any multi-cylinder carbureted motorcycle, if you own one, you'll likely want to handle the synchronization yourself. Standard vacuum-type carburetors are not frequently tuned, so many people leave this task to professionals.

2023-03-08

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