Re: 1982 CB750 DOHC Cafe racer + some issues

Posted by Re-run on Sep 21, 2016; 7:34pm
URL: http://vintage-and-classic-hondas.81.s1.nabble.com/1982-CB750-DOHC-Cafe-racer-some-issues-tp4061343p4061344.html

If plugs are dripping, then there is way too much fuel. First off, you should be hooking clear fuel tubing to the drain nipples. Crack the screws open and make sure the bowls are filling up but not over filling.

Second, I hate to say this, but the pods are better off ditched. These carbs are cv carbs, they rely on vacuum from the airbox to work right and no amount of fiddling with the carbs will change that. Some people, in a bid to do anything they can to keep pods, end up taping most of the filter surface of the pods to help create this vacuum. So, now they have pods with tape on them. Maybe that's cool? Still, pods will never offer better performance, and will actually lead to other issues from crosswinds and rain. May as well stick on velocity stacks and custom make covers to close the stack down for vacuum purposes. It would look better.

When there is that much fuel, things just are not going to burn right.

For #4, put a teaspoon of oil in the cylinder and check compression again. If it stays the same, it is valve related. If it goes up, then it is rings.

Still the bike looks pretty nice. I would probably try making a breadbox style filter for it. Keeps the more open look, while still providing a sort of airbox.