My 79K and winter labor

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My 79K and winter labor

alehman
All right guys, I've been hanging around the forum for a year now asking ridiculous questions and learning how to work on these bikes, and I finally have some progress to show for it.

I bought the bike with about 9000 miles for 400 bucks. It began its life with me looking like this:



Pretty good deal, right? anyway, the carbs were totally screwed but luckily I had another set I had just rebuilt  and which were tuned for pods, which I was determined to make work. I later found out with my rebuilt carbs that a PO had installed a stage III kit, which I suspect is the reason why I haven't had trouble with pods yet on the CV carbs. After popping on my rebuilt carbs and some new tires, as well as tensioning the cam chains, I was good to go. I rode the bike as you see it for about 2 months before it became too bitterly cold to take the bike out. I'm based in Providence, where I'm a student. The fact that I'm a student was a bit of a problem, because I didn't really have a great place to store the bike for the winter. My friend also has a CB750 and we ride/work on our bikes together, so we decided to store the bikes behind his house for the winter. We would have put them in a basement or a garage but we didn't have a garage and the bikes wouldn't have fit through available basement openings by a longshot.

We built this enclosure out of a cheap used tent and tarps:



we made walls from tarps. Here's a (dark) panorama of the interior:




This tent was where all work on the bikes was conducted this winter. We had a small space heater in there but even as such we were working mostly in freezing temperatures.

At the time of this post, my bike now looks like this:



because of my limited workspace and resources, as well as my current tastes, I went with a pretty conservative look.

New parts and work I did:
-forks >>> new seals, oil, redone with progressive springs, covered with fork gaiters
-New rear shocks
-gauge needles straightened so now i can actually tell how fast I'm going
-New dent-free gas tank, $80 on ebay, polished and finished with boeshield T-9
-Exhaust blasted and painted. The chrome looks good in the first photo, but it was rusting badly in person. There was also a rot hole that I welded a plate over.
-Installed aluminum exhaust flanges from an F model- required milling to fit. Old ones were rusted.
-All electrical connections cleaned and coated with dielectric grease
-Starter clutch>>> new springs, and bolts loctited. No more marbles in a can.
-A handful of worn parts blasted and re-painted
-Fixed a ridiculous brake squeal with new pads and anti-squeal compound
-Boiled and cleaned brake calipers and piston, fluid replaced
-New AGM battery
-Charging rotor rewound--- old one died at the end of the season
-New rectifier/regulator--- old one went bad as well
-New indicators
-countless new nuts, bolts, washers






1979 CB750K
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Re: My 79K and winter labor

Butcherblock
Nice bike! Looks like you have done lots of the important maintenance, and some of the fun cosmetic stuff as well!. Tank looks awesome, the exhaust looks fantastic as well. I look forward to reading your log as you progress through this build! I do have a question though. What is a stage 3 carburetor kit? Why does it allow you to use pods on CV carbs? Does it create the necessary vacuum to allow the carbs to operate?
Keep logging your progress, and ride safe!
1982 cb750k 1982 cm200
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Re: My 79K and winter labor

alehman
Thanks! Dynojet sells this particular stage III kit. It comes with specially tapered, height-adjustable needles in order to help richen up the midrange, which is where podded DOHCs seem to fall flat on their face. The holes in the bottom of the slides are also enlarged through drilling, and I'm not sure why it's done. It also comes with the recommended secondary main jets, which I believe are 126s. I also have my primary mains at 75. By all accounts, however, the bike will still run better with an airbox. I don't mind though.
1979 CB750K
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Re: My 79K and winter labor

shinyribs
Administrator
Thats gotta be one of the coolest workspaces ever!

The bike looks great dude. I really dig what you did with the tank.Awesomeness