SJ

Tags for articles that include FCR settings, especially SJ slow jets. This is a jet that mainly controls fuel supply at low throttle openings. For the SJ area, detailed adjustments are made separately using the AS air screw and PS pilot screw. Depending on the size of the SJ, if the return range of the screw does not correspond to the appropriate position, replace it.

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.

FCR Tuning - Jet Search Order from Initial Tuning...

I received an email asking about the FCR of a CBX1000. I'm an amateur, but I try to provide information diligently in my own way. I'm not doing this commercially, but I'm very happy when I get a reaction from the web. This time, I'll write about the order in which you should tune the FCR from the factory.

FCR setting - proper air screw value...

I think the proper way to return the air screw is about 1.5 turns. When I first started playing with the CBX1000 FCR, I changed the slow jet a lot. When I didn't know how to tune it, I just changed everything I could get my hands on. Now I'm trying to avoid changing the SJ as much as possible.

FCR Tuning - Throttle opening 1/16 determined by straight diameter and slow jet...

This is a story about when I used a jet needle that I bought a few years ago for setting the FCR of my CBX1000 but hardly used. The other day, I looked back at the past logs about the changes in the straight diameter of the SJ and JN. My experience is different from that of my past self, so the accuracy and precision of what I have written down will be different.

Installing an FCR on a CBX1000! 10 points to consider when starting serious tuning...

This article is aimed at people who want to start tuning up their FCR in earnest. It covers carburetor synchronization and tuning.

Buying a CBX1000 FCR - How to tune for the first time...

Many people want to install a racing carburetor on the CBX1000. In Japan,the options are the BITO FCR or CRS carburetor. It seems that TMR can also be made to order,but it is not common. If I were to buy one,I would choose the FCR.

FCR tuning - Jet needle changed to 90FTN. I was concerned about the straight diameter - 22/11/15...

This is a test run after changing the jet needle of the CBX1000 FCR. The purpose is to check whether the straight diameter of the jet needle is good or bad at low throttle opening. I have been selecting a jet needle for the slow jet 48 for a while now. As a result of the test run,the acceleration is so good that I don't want to touch it for a while.

Notes on changing FCR slow jet...

Since the CBX1000 has 6 carburetors,the number of jet changes is 6 times that of the SR,and 1.5 times that of a 4-cylinder motorcycle. It's a pain. When purchasing a new jet,it costs 6 times more than an SR. I don't regret it too much since it's money I'll be spending on my hobby,but it's better if it doesn't cost anything.

FCR tuning-Jet needle replacement-Up change-22/11/08...

This is the FCR tuning. Current jet needles have a special thread count that sharpens up. It should be 90FXM#3=90FTM#1. I haven't tried it,so I don't know,but it should probably be the same. I'll check it out when I have some free time.

FCR Tuning - Tuning throttle opening from 1/16 to 1/8 - 22/11/06...

Regarding the current FCR tuning of CBX1000,I was concerned about the lower throttle opening. It's not a good idea to get caught up in the air-fuel ratio meter,but a partial reading of 10.5 is around throttle opening of 1/16 to 1/8. It is unclear whether this condition is good or bad.

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