FCR-FCR tuning in general. 6 cylinder tuning, AS, JN, MJ replacement, etc.

FCR Tuning - Symptoms of too rich and too lean - Air-fuel ratio meter also recommended...

When tuning FCR, you will always see these words. [rich] [lean] They seem clear, but they are very vague. For example, there are various expressions for rich, such as [little rich] and [too rich].

2023-02-08

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4 points to note about gasoline leaks during FCR tuning...

When I was tuning the FCR of my CBX1000, I once had a gasoline leak. I was very sad. I would like to write about it. First of all, when gasoline leaks from the carburetor, it is almost always a man-made disaster. When it comes to aging, it is a man-made disaster caused by neglecting maintenance. When it comes to aging, it is not clear where the gasoline leak will come from.

2023-02-07

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Improving Fuel Efficiency with FCR Carburetors...

I often come across discussions—both positive and negative—about the fuel economy of FCR carburetors. Given the potential for heated debates on social media, I’ve decided to share my thoughts here on my blog instead. I believe the right answers vary for each individual, so I’ll express my opinions in a column format.

2023-02-06

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FCR - Tuning with easy-access jets in mind...

CBX1000のFCRを触る時はつい最近までは気になったらすぐにジェットを変更するように心がけていました。私は趣味でFCRのセッティングをしています。時間効率の優先度は低いです。納得出来て満足できる結果が優先です。もちろん、手間だと感じる事もあります。

2023-01-24

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FCR Tuning - Will tuning improve the return to idle?...

There is one thing I pay attention to when tuning the FCR of the CBX1000. That is, I frequently adjust the synchronization of the carburetor. This time, I will write about the return to idle of the FCR when idling, including synchronization. In the first place, everything I write may be a placebo effect. However, there may be some points that are correct. Please read it with that in mind.

2023-01-24

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If I use an FCR - Foam Air Filter Sock, will it be okay to use it in the rain?...

This is about the CBX1000 Foam Air Filter Sock. I remember writing an article before asking, "Is it okay to use it without a filter even in the rain?" As long as you apply filter oil, it's generally fine.

2023-01-23

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I found a box for a CBX1000 FCR from over 20 years ago in the back of my room....

This is the box that my CBX1000 FCR came in. It's not uncommon to find parts from decades ago. It's a little unusual to find just the box. The contents are still in good working order. Judging from the packaging of the box, is it the same as the CRS carburetor? The illustration shows the CRS carburetor, not the FCR.

2023-01-22

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FCR Tuning - What is the air-fuel ratio at idle?...

As the title suggests, this is about the air-fuel ratio of the FCR when idling. The air-fuel ratio of my CBX1000 when idling is around 13.5 when the engine is cold, and around 12.9 when the engine is warm. This is just based on my current preference. A senior Z enthusiast told me that the air-cooled Z series is 14.

2023-01-22

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FCR Tuning - Tuning that becomes worse due to jet changes is within the acceptable range of effects....

What does it mean to tolerate poor performance? I will write about the tuning that makes the performance worse. FCR tuning is a repetition of AB testing. If there is no change even after adjusting the carburetor, it cannot be compared. It is possible to get a result that there was no change, but if you cannot compare, you cannot tune the FCR.

2023-01-20

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FCR tuning - If you make the jet needle straight diameter lean, it may be pointless to make the jet rich......

This is a description from the history of CBX1000 FCR tuning. It may not be useful, but if you intentionally unbalance the jet, you can use a jet that you can't use. In particular, the CBX1000 tends to run out of clip stages.

2023-01-18

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