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Author Topic: '78 CB750k conversion to cafe racer (yes, more issues)  (Read 55265 times)

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Offline flybox1

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Re: '78 CB750k conversion to cafe racer (rear brake shoes worn out?)
« Reply #300 on: May 28, 2014, 01:46:51 PM »
PS...have someone firmly depress the rear brake lever as you are torquing down your axle castle nut.  Allows for better drum centering/more even wear of your pads  ;)
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'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

Past Bikes
1974 550K0 (stock), 1973 CB350F (stock), 1983 Yamaha XS400K (POS)
77/78 cool 2 member #3
"Knowledge without mileage equals bullsh!t" - Henry Rollins

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Offline deafcaferacer

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Re: '78 CB750k conversion to cafe racer (rear brake shoes worn out?)
« Reply #301 on: June 30, 2014, 07:36:30 AM »
Quote from: flybox1 on May 28, 2014, 01:46:51 PM
PS...have someone firmly depress the rear brake lever as you are torquing down your axle castle nut.  Allows for better drum centering/more even wear of your pads  ;)

Thanks, ended up being just a few turns on the brake lever adjuster that did the trick.

Been riding the bike quite a bit and some new issues have come up- smoke coming through the air filters, a strong smell of gas. I checked the bowls and #1 seems to  be consistently overflowing despite the fact that I cleaned the carbs just a few months ago.. checked and rechecked, nothing seems blocked or stuck or jammed, and yes I checked to make sure float was right side up.

Pretty baffled.. maybe I should just order a float replacement set?
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'73 CB750k engine, hubs, and a '76 tank, on 'a 78 frame. Go figure.

Offline deafcaferacer

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Re: '78 CB750k conversion to cafe racer (yes, more issues)
« Reply #302 on: June 30, 2014, 11:37:34 AM »
Update: looks like the flat washer for the float valve set is shot.

I took off the bowl and turned on the petcock while manually holding the float in and immediately it started to drip, drip, drip and I was able to isolate it to the flat washer seeing the gas swell up around the valve set and flow down from that.

So either way, have to order a new float bowl kit.
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'73 CB750k engine, hubs, and a '76 tank, on 'a 78 frame. Go figure.
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