Re: pidjones rat bike project - '79 CB750F

Posted by pidjones on Sep 29, 2018; 1:11am
URL: http://vintage-and-classic-hondas.81.s1.nabble.com/pidjones-rat-bike-project-79-CB750F-tp4063756p4063758.html

Patina? Flaking 1/4" or more of poor Bondo, black paint over original silver, you name it! I think the green mold on the aluminum cases is primo. Strongly dislike "rat rods" that have fake aging and fading. Nothing fake about this! Only setting in the East Tennessee environment can cause original aging like this.

Today I was able to get started on the carbs.  One at a time pulled the float bowl off each (no ruined screws!) and sprayed the bowls with carb cleaner, pulled the drain valves and opened overflow and drain on each, cleaned the valves. Pulled secondary main jet on each (each one plugged solid with lacquer) and softened the lacquer with carb cleaner then was able to work a .008" guitar string through and finally shoot cleaner through them. Loosened the needles with carb cleaner and gently, padded with rag and tongue depressor, pried each piston up to free the needles fully. Pretty gummy, but still a LOT easier than working through the damage caused by ethanol gas.

Looks like the accelerator pump diaphragm will need replaced, however. Just so stiff that it hangs up when pressed. I'm sure all rubber will need replaced also, and already have bowl o-rings and rubber plugs on order. Should have the other o-rings in my supplies.