Sasquatch66

Hello all, first time posting and hopefully someone here has tackled the problem that I'm having and can offer help. I'm currently restoring a 1981 CB650 and i'm trying to replace the Tee fitting between the #1&2 carburetor, as well as between the #3&4 carburetors. The tee fitting has a Honda PN: 16036-426-003, and is discontinued. I believe the Tee fitting serves as a clean air source for some part of the carburetors. Attached are a pair of photos showing a tee fittin in place and one without. If anyone has tackled this problem and found a suitable replacement for the part, please let me know. Thanks in advance.

showing the rubber tee between the carburetors.


without tee fitting in place

Malt-liquor

Hey I believe in sasquatch also. I'd head to sohc4.net with this question. I also own a 79 cb650 trying to get the carbs back together

Sasquatch66

This is maybe a good time to update this post. I fabbed some T's from bronze .25" I.D. bushings. Still had problems getting the bike to rev past 5K rpm. I would just run out of fuel. Being that the needles are raised by vacuum that got me to searching for an altered vacuum system. I found that there was a missing vacuum tube between the #2&3 carburetors, which is necessary for the system to work correctly. Once I replaced that, it runs like a million dollars. I was able to go back and resynchronize the carbs, readjust the low speed idle jets and get it spot on. I was able to find an addendum to the service manual on Scribd, where it shows the Keihn carbs broken down into all pieces, and how to adjust them. BTW, I also had a plugged Idle jet, these have pressed in low speed jets so I had to drill one out. It sucks but it's doable. Don't give up on that old girl, It'll run again.