Diego_1100R

This is the piece as I made it: and this is another interesting video: https://youtu.be/kcNjF7EdcAs?si=vBWavmQ_xgiuiY3n

Thanks for your contribution. The video is very interesting. What I did is approximately the same thing: I made a hollow brass screw M6x0.75 with a connection for the transparent tube. Simply replace the drain screw. But I made one piece, so I have to measure one at a time. In the video you can see a level of just 1-2 mm above the bowl closing surface. With the correct float setting, I get about 5 mm above that line. This led to my initial question: how much should it be above this level? However, after Jaydee's reply I have put my soul at peace, and I will carefully adjust only the height of the float and what happens to the fuel level does not matter.

Thank you so much for your answer. I'm happy to hear this from you, because then I can rest assured that I'm on the right path. Yes, mine is a '91 M, GSX-R 11. Upon careful observation they do not appear to be deformed as to have one side higher than the other; maybe in a little amount. To replace them could did cost more than $200; and I replaced already many OEM components, like pilot jets, main jets, emulsionators, seat valve and needle, rubber diaphragms. I'll try to stick the floats to the standard value, maybe a little over, 15mm (14,7 + - 1) Sorry for my bad English, but I'm Italian and as you know we are better with gestures than words!

Hi guys, somebody who knows the correct height range for these carbs to set fuel level via clear tube gauge? Setting float height to 14.7 (or 15 mmm) give approximately 5-6mm in fuel height. Tested on a custom carbs stand, putting the bowls closing surface horizontaly. My dubt is that with 30+ y.o. plastic floats, could have right away a micro reduicing to their volume. So the mechanical setting can give an incorrect result.

do you suggest I open a new thread about bowl gas level?

i hope the quote's notify to the user

Last year I put a Lithium battery in my '91 gsxr 11 without problem; from late '70, early '80 bikes has regulator does not exceed 14,5 V. Anyway the LiFePo4 battery has got a BMS circuit inside. Due to the high discharge current capability, I put a 4Ah Lithium instead of a 14Ah lead Yuhasa.

HI, I read the whole thread; glad you solved it. Now I just wanted to know: did you also lower the level in the bowls to 1.5mm above the closing surface or did you keep it at 5mm? Thanks