I am the owner of a Honda motorcycle [CBX1000] who lives in Hiroshima City, Japan. I am posting about FCR carburetor and CBX1000 customization. I also post about things other than cars and motorcycles. We will post information that will make bikers around the world happy.
Which is better, the Keihin FCR carburetor or the CRS carburetor? Of course, the FCR carburetor.
Racing carburetors are also recommended for motorcycle maintenance. Now, let's dive into this with a killer title. I'm writing a column comparing the FCR and CRS carburetors to determine which is superior. Generally speaking, later models tend to be better when products serve the same purpose. Since there isn’t much information online about why one might be superior, I’m going to share my thoughts on why I believe the FCR is the better option.
First, let’s discuss the advantages of the CRS. In terms of maintenance, durability, and cost, the CRS carburetor often comes out on top. There’s no doubt that newer models have superior power and performance. The continued popularity and certain advantages of the CRS explain why it’s still on the market today. Now, let's get into the details. Let's start!
I will now write about the specific differences.
・Presence of an Accelerator Pump: This feature exists only in the FCR.
・Throttle Valve Bearings: The FCR uses bearings in the throttle valve, making the throttle lighter. This is an improvement over the CRS.
・Body Durability: The FCR has a known weakness where the body can wear out, but countermeasure parts are now available.
・Race Regulations: There are race classes that only allow participation with the CRS. This might be the most significant point when considering practicality.
・Pilot Screw: The CRS does not have a pilot screw, although it can be added with specialized modifications.
・Price: The CRS is overwhelmingly superior in terms of cost.
・Peak Power: Both carburetors are designed to optimize efficiency, so there's little difference in peak power between them.
Choosing a Carburetor Based on Looks
Which racing carburetor would you choose based on looks alone? While it ultimately comes down to personal preference, spending a significant amount of money just to change the appearance of your motorcycle with a racing carburetor feels a bit disappointing. In some cases, it might be better to overhaul and continue using the stock carburetor.
That said, changing the looks should never be the sole purpose. There are other factors to consider, like the challenge of finding a carburetor or the desire to improve performance. Regardless of the reason, upgrading to a racing carburetor will positively impact your motorcycle's performance, marking the first step into the world of racing carburetors.
How does it compare to fuel injection?
When comparing fuel injection and carburetors, carburetors fall short in terms of performance. However, when it comes to maintenance, carburetors can be somewhat easier to handle in certain aspects. There are also customs where carbureted motorcycles are converted to fuel injection. Since it only involves installing sensors, it's not considered very difficult for those who are capable of handling it.
Once I've had enough fun with the FCR, I’m considering challenging myself with an injection conversion for the CBX1000 or trying ECU tuning on another motorcycle. However, this is not something that will happen immediately. For the time being, I will continue to focus on writing my blog about the FCR and CBX1000.
For FCR Beginners: Which Racing Carburetor is Best to Start With?
Choosing a carburetor with a wealth of information available will likely enhance your experience. If the CRS is common among those around you, you should be able to find plenty of information about it. If your local motorcycle shop recommends a specific carburetor, you can obtain information from them. Every racing carburetor comes with a tuning manual, and with careful reading, you should be able to perform tuning.
Ultimately, racing carburetors require a certain level of self-adjustment to be effective. Performance-wise, newer carburetors are overwhelmingly recommended. However, if you are a beginner considering introducing a racing carburetor, selecting one with abundant information available might be an important factor to consider.
I’ve been working with the FCR for some time now. What I found necessary were:
①Air-fuel ratio meter ②Tuning manual Aside from these, I managed by gathering information online and experimenting on my own. Racing carburetors are designed to be tunable, so there’s no reason you can't tune them. By referring to tuning manuals and information shared by others online, you should be able to manage the tuning process.
Which is better, the Keihin FCR carburetor or the CRS carburetor? Of course, the FCR carburetor.【summary】
In the end, newer carburetors are superior. The FCR is essentially an improved version of the CRS. Performance-wise, there is no comparison—overall, the FCR is superior. I’m not currently considering integrating a CRS into my bike to see how it performs, as I’m satisfied with the FCR.
Twenty years ago, I sold off my stock carburetors, convinced that I would never use them again. Now, with the passage of time, I feel that trying stock carburetors might be worth considering. Preferences can change over time. In the next ten years, if I develop an interest in testing various carburetors, I might end up purchasing a CRS. The future is uncertain.
This has been a column-style post comparing the FCR and CRS. See you again!
