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Author Topic: My first 750... Update:5/18/10 Going back to Japan  (Read 8612 times)

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Offline hoodellyhoo

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My first 750... Update:5/18/10 Going back to Japan
« on: December 08, 2009, 06:31:49 pm »
For those that didn't see, I was finally able to buy a 750. I've been wanting one for sometime, mainly because the 350 is just a bit small for longer/faster rides. I was notified about the bike from member johnie (also in oshkosh) and he even helped me bring it back to my place in his van.

It is a 76 K6 with some obvious modifications. It is in surprisingly solid condition with little rust or corrosion. The sidecovers are broken and the airbox and headlight are missing. I have to say that I've never seen a bike so dirty before. Every surface, no matter how deeply burried, is covered in dust or dirt. I'm assuming the bike sat uncovered in a barn for quite some time. Don't quite know how I'm going to address this without doing a full tear down, but there might be a pressure washer involved..

My ultimate plan is to do a stock restore, but we'll see. For now I'm doing what I can to get it running, driving, and stopping.

Here she is the day we brought her home





After I removed the carbs, battery box/electricals, mirrors, front brakes, chaingaurd



See what I mean about it being dirty (this is what the whole bike looks like underneath):



The battery box was too rusty for me so that's getting paint



I cleaned up the battery box rubber parts, along with all the bolts, washers, and electrical components, and whatever else I could find to clean. The rubber bits were pretty stiff so I might try one of those DIY rubber softening tricks.



Waiting for paint.



Took apart the carbs today. Deffinitely had to take them all the way down so I could get all of the crud and dust off. I was hoping I could save the rubber dust boots on top, but they fell apart during disassembly :(



insides weren't too bad. Lots of rusty crud stuck in the float valve screens.



I saw that the main jets were 140's. I don't know what stock is for a K6, but I know it isn't that big. Since they are so big I'm thinking I might try throwing pods on just so I can ride it in the spring. We'll see what I decide.



« Last Edit: May 18, 2010, 05:42:51 pm by hoodellyhoo »
1972 CB350F (Back from the Dead!)- http://forums.sohc4.net/index.php?topic=20822.0
1965? S65 - Coming Eventually!
1972 CB750K2 (father-son project)
1976 CB750K6- (sold) http://forums.sohc4.net/index.php?topic=96859.0
1976 CB750K6 (sold)- http://forums.sohc4.net/index.php?topic=62569.0

Offline Johnie

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Re: My first 750...
« Reply #1 on: December 08, 2009, 07:22:35 pm »
T...coming along nicely. I bet some Penetrol will make that frame look pretty nice. As long as you have the carbs bodies out get me that carb ID and I will let you know the stock configurations.
1969 CB750K0 - Candy Blue Green
1970 CB750K0 - Candy Ruby Red
1970 CB750K1 - Candy Gold
1973 CB750K3 - Candy Bacchus Olive
1974 CB750K4 - Flake Sunrise Orange
2000 1500 SE Wing
1971 CB750K1 (next project)
1969 CB750K0 (The Patina Bike - Blue / Green)

Oshkosh, WI  USA

Offline hoodellyhoo

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Re: My first 750...
« Reply #2 on: January 16, 2010, 10:53:54 pm »
Finally put some good time in on this thing the past few days. I wrestled all the old rubber bits back on the freshly painted battery box and put the electronics back on. I finished cleaning the carbs (YAY!) but since I didn't have my reference pictures with me I couldn't finish putting them back together. I also still have to check all the carb adjustments. Lastly I fiddled with the front brakes. After trying a few things to get the left pad and piston out of the caliper I resorted to the grease gun method and it worked like a charm. I was worried that the brake piston would be pitted to heck based on the condition of the caliper but the thing looks like brand new! Since at least one of the brake hoses looks newer I suspect that the bike had a brake job done on it at some point. Too bad it was neglected and allowd to freeze up. After the piston got out I started stripping the paint off the caliper.

Finally done!(ish)


Ready to go back in


No pitting!!!!


I'll finish these up tomorrow with the dremel and a wire brush.


1972 CB350F (Back from the Dead!)- http://forums.sohc4.net/index.php?topic=20822.0
1965? S65 - Coming Eventually!
1972 CB750K2 (father-son project)
1976 CB750K6- (sold) http://forums.sohc4.net/index.php?topic=96859.0
1976 CB750K6 (sold)- http://forums.sohc4.net/index.php?topic=62569.0

Offline kslrr

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Re: My first 750...
« Reply #3 on: January 16, 2010, 11:00:03 pm »
Nice job scoring a 750 and nice job cleaing up so far.
Now  1972 CB350FX (experimental v2.0)
        1981 CB650c Custom with '79 engine (wifes)
        1981 CB650 engine
        2004 HD XL883C Custom
        1977 Yamaha XS750D (in progress)
Then 1972 CL175
        1964 Yamaha YGS-1T
No ride is a Bad ride

Offline hoodellyhoo

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Re: My first 750...
« Reply #4 on: January 16, 2010, 11:32:11 pm »
Nice job scoring a 750 and nice job cleaing up so far.

Thanks! Here's some pics to show how nasty those carbs were when I started.



Unfortunately the rubber boots were too far gone to save.
1972 CB350F (Back from the Dead!)- http://forums.sohc4.net/index.php?topic=20822.0
1965? S65 - Coming Eventually!
1972 CB750K2 (father-son project)
1976 CB750K6- (sold) http://forums.sohc4.net/index.php?topic=96859.0
1976 CB750K6 (sold)- http://forums.sohc4.net/index.php?topic=62569.0

Offline heyjones

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Re: My first 750...
« Reply #5 on: January 17, 2010, 08:46:40 am »
I'm in the process of rebuilding my 750 and while taking the carbs apart noticed that mine was jetted at 140 as well. I'm pretty sure it's because of the exhaust, and it looks like yours isn't stock either. If you want to do pods you'll probably have to make some more jet modifications. Good luck!
1976 CB750K
My Build Thread

Offline Johnie

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Re: My first 750...
« Reply #6 on: January 17, 2010, 09:01:51 am »
T...pay close attention to the choke when you get it back together. On my K4 when I closed it all the way 1 & 4 were closed, but 2 & 3 were half open. Just be sure to check the butterfly adjustment. Looks to be coming along nicely. I am still waiting on my chrome and have been rearranging my shop and adding a new work bench. Battery box and tool tray waiting to go back in the K4. Soon the steering head and gauge stuff. Have fun with it...
1969 CB750K0 - Candy Blue Green
1970 CB750K0 - Candy Ruby Red
1970 CB750K1 - Candy Gold
1973 CB750K3 - Candy Bacchus Olive
1974 CB750K4 - Flake Sunrise Orange
2000 1500 SE Wing
1971 CB750K1 (next project)
1969 CB750K0 (The Patina Bike - Blue / Green)

Oshkosh, WI  USA

Offline hoodellyhoo

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Re: My first 750...
« Reply #7 on: January 19, 2010, 08:22:21 pm »
I spent almost an hour writing up a nice descriptive post, but my internet didn't like it so instead you get to read the condensed post.

Yesterday I finished mocking up the carbs:


Today I put in new float bowl drain screw o-rings, clamps for the pods, and fuses. I ventured outside to the arctic garage to install the freshly painted battery box and, using an almost-dead battery from a friend's bike, started to test the electrics. At first I got nothing so I shorted the starter solenoid and got the motor to turn over a few times before the battery gave up. Eventually I got the horn, starter button, headlight, signal buzzer, and dash lights to work. Everything but the rear light and gauge lights:



I was getting cold so I took the gauges off to play with them inside. Despite my freezing hands I was still pretty stoked about getting almost everything to work so I took an "action" shot:



After playing with the gauges and their light bulbs for a while I concluded that there was nothing wrong with them. Yet another look at the wiring diagram showed one minor connection I had overlooked. With that in place I had working gauge lights, tail light, and even a working rear brake switch.

Gotta love that green glow:


All-in-all a very good day. Even though it was cold, everything on the bike worked. Tomorrow I will pick up a few tools needed to finish the brakes, do a tune-up, hook up the carbs (if the cold hard insulators will let me), and maybe try to start this old beast!


1972 CB350F (Back from the Dead!)- http://forums.sohc4.net/index.php?topic=20822.0
1965? S65 - Coming Eventually!
1972 CB750K2 (father-son project)
1976 CB750K6- (sold) http://forums.sohc4.net/index.php?topic=96859.0
1976 CB750K6 (sold)- http://forums.sohc4.net/index.php?topic=62569.0

Offline hoodellyhoo

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Re: My first 750... Update:1/20/09 It's Alive!!! w/video
« Reply #8 on: January 20, 2010, 02:31:30 pm »
Come hell or high water I was determined to get this thing running today. After a quick stop at the gas station to fill up the tank with fresh gas I put the carbs back on. I used the ratchet strap method with a block of wood:



Then I went to adjust the points and timing. I haven't bought a battery yet (trying not to spend $$) so I rigged up the battery from my 350f. I was going to adjust the points but by that time I was getting pretty cold so I nixed that idea and decided to just see if it would run. With the tank on I turned on the gas and waited for the bowls to fill and see if any of the floats were stuck. With no gas leaking or overflowing it was time to go for it. I thought that maybe the 350f battery would be able to crank the starter but it wasn't so it was kicker time. I kicked a few times with the choke on and the switch off to draw in fuel. With the switch on and 4 or 5 kicks she was running ;D ;D ;D. I was surprised, once I adjusted the screw enough, how well it would idle. Everything sounds good and healthy. If there wasn't so much snow and ice I probably would have taken it up and down the street, even without the front brake. Instead I settled for running up through the gears on the center stand. Surprisingly, the clutch wasn't too stuck and seems to be adjusted properly.

Here's a video. If the electric start had been working I would have taken video of the actual "fist start". I didn't want to end up with a video of me kicking the bike 50 times so I waited till she was warmed up to take video.
[youtube=425,350]<object width="425" height="344"><param name="movie" value=" name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src=" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="425" height="344"></embed></object>[/youtube]

Out of sympathy, I let her run for a while and get good and warm before I shut her down and put her away. It's cruel what these bikes have to endure during winter here in Wisconsin and any bike that hasn't run in two years deserves a thorough warm up :)

Next step will be cleaning out the front brakes. That will probably be it until things warm up and I can ride her.
1972 CB350F (Back from the Dead!)- http://forums.sohc4.net/index.php?topic=20822.0
1965? S65 - Coming Eventually!
1972 CB750K2 (father-son project)
1976 CB750K6- (sold) http://forums.sohc4.net/index.php?topic=96859.0
1976 CB750K6 (sold)- http://forums.sohc4.net/index.php?topic=62569.0

Offline Johnie

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Re: My first 750... Update:1/20/09 It's Alive!!! w/video
« Reply #9 on: January 20, 2010, 07:00:31 pm »
You get an atta boy T. Nice work. Sounds nice. I think you should take it around the block before that crappy weather sets in this weekend.
1969 CB750K0 - Candy Blue Green
1970 CB750K0 - Candy Ruby Red
1970 CB750K1 - Candy Gold
1973 CB750K3 - Candy Bacchus Olive
1974 CB750K4 - Flake Sunrise Orange
2000 1500 SE Wing
1971 CB750K1 (next project)
1969 CB750K0 (The Patina Bike - Blue / Green)

Oshkosh, WI  USA

Offline hoodellyhoo

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Re: My first 750... Update:1/20/09 It's Alive!!! w/video
« Reply #10 on: January 20, 2010, 07:30:13 pm »
You get an atta boy T. Nice work. Sounds nice. I think you should take it around the block before that crappy weather sets in this weekend.

I really thought about doing it, but our driveway is solid ice and I don't have studded tires. But maybe if i push it onto the sidewalk......
1972 CB350F (Back from the Dead!)- http://forums.sohc4.net/index.php?topic=20822.0
1965? S65 - Coming Eventually!
1972 CB750K2 (father-son project)
1976 CB750K6- (sold) http://forums.sohc4.net/index.php?topic=96859.0
1976 CB750K6 (sold)- http://forums.sohc4.net/index.php?topic=62569.0

Offline rickmoore24

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Re: My first 750... Update:1/20/09 It's Alive!!! w/video
« Reply #11 on: January 20, 2010, 07:35:50 pm »
Awesome, good job getting her running!
1972 CB750 K2 (Daily Runner)
1972 CB750 K2 (Sold)
1973 CB750 K3 (Hardtail 836cc)
1998 CBR F3 - R.I.P., went down on the 101 in Calabasas, Ca.
1995 EG6

Offline andy750

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Re: My first 750... Update:1/20/09 It's Alive!!! w/video
« Reply #12 on: January 20, 2010, 08:08:49 pm »
Well done!! And it sounds very good for a bike that hasnt been started in  a while!! I bet you cant wait to ride it now ;-)

Good luck!
Andy
Current bikes
1. CB750K4: Long distance bike, 17 countries and counting...2001 - Trans-USA-Mexico (CB750K4), 2003 - European Tour (CB750K4), 2004 - SOHC Easy Rider Trip (CB750K4), 2008 - Adirondack Tour 2-up (CB750K4) , 2013 - Tail of the Dragon Tour , 2017: 836 kit install and bottom end rebuild.
2. CB750/810cc K2  - road racer with JMR worked head 71 hp
3. VStrom DL1000 2003
4. XLR650L 2006

Where did you go on your bike today? - http://forums.sohc4.net/index.php?topic=45183.2350

Offline hoodellyhoo

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Re: My first 750... Update:1/20/09 It's Alive!!! w/video
« Reply #13 on: January 24, 2010, 07:41:12 pm »
Another productive day. I cleaned all the rust and gunk out of the master cylinder. A big help here was a set of dental picks I bought at Harbor Freight. The little clip that holds the rubber boot in was pretty stuck and the pics made easy work of it. Then the circlip was as fun as ever (took about a half hour). I think I need new circlip pliers.



I used a wire wheel on my dremel tool to clean all the rust out of the grooves that the washer and circlip go into. With everything cleaned up, reassembly was pretty easy. The brakes felt firm when I first got the bike so hopefully they are still firm once I get everything back on and bled.

All clean and back together


I put the final coat of paint on my caliper. Once it dries I can finish up the front brakes.


I spent some time cleaning up rust. This is one of my mirrors. It's pitted pretty bad but I'm not going to do anything about it right now. I can still see in the mirror just fine...


Last thing I did today was wire up the front blinkers. The K5/K6 are supposed to have running lights up front but this bike has the earlier style turn signals on it (I was told the bike had a fairing on it at one time, hence the missing headlight and different turn signals)

Now for the fun part of today. For those not living in the area, we've had a lot of rain which has knocked down a lot of snow and cleared the ice off of the side streets....such as the side street by my house. You all know what clear streets and warm (slightly above freezing) temps mean.... a perfect opportunity for a test ride! To do this I had to find a battery. When I first ran the bike I was jumping it off my 350 battery (you can see it on the ground in the video) so that wasn't going to work. I went and tested the battery that came with the bike and got 5.4 volts, certainly not enough. Then I went back to my friends half-dead battery that I used for the electrical test. It showed 11.4 volts, and was my only option, so I went with that. Luckily it was enough to start the bike. Since our driveway is solid wet ice I wasn't going to ride on it, so I very carefully walked the bike down the driveway and to the sidestreet. I didn't have any front brakes so I adjusted the rear bakes so I was able to at least stop. I also still don't have a headlight...or right rear blinker.....or license plate...or insurance...and the tires are a bit low. For these reasons this was going to be a simple run up and down the sidestreet.

Some observations from my short but triumphant ride ride:
1) The mufflers are loud, but the 350 is quiet so as far as I'm concerned a little noise is a good thing.
2) There is actual torque to be had which is another pleasant difference from the 350.
3) I only took it up to 35 (the speedo works!) in 3rd gear, but those first three gears shifted and worked fine.
4) Even though the road was straight (hence, no handling tests), the 750 feels so much heavier and more planted than the 350. I like that. :)
5) As I was preparing to turn around and head back home, a cop drove by and gave me one of those looks. Maybe next time I take a test drive I should have a headlight, a licence plate, a front brake, a rear blinker, insurance, and properly inflated tires ;D

Note the tripodometer. That's right, a whole half mile of test ride goodness. In January in Wisconsin. Another good day today.


I had to take a picture of my trusty steed after her maiden voyage.


1972 CB350F (Back from the Dead!)- http://forums.sohc4.net/index.php?topic=20822.0
1965? S65 - Coming Eventually!
1972 CB750K2 (father-son project)
1976 CB750K6- (sold) http://forums.sohc4.net/index.php?topic=96859.0
1976 CB750K6 (sold)- http://forums.sohc4.net/index.php?topic=62569.0

LouB

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Re: My first 750... Update:1/24/09
« Reply #14 on: January 24, 2010, 08:32:26 pm »
Man, nice job!! I am jealous...I just got a '76 K6 and am in the process of total tear down. I know what you mean about the dirt! My bike had been "stored" for 14yrs and I think some of the crud is that old! I was planning on rebuilding the carbs and I'm pretty sure the stock jets are 105 on this bike. Anyway, great job on getting it running and going for a ride in Wisconsin in January!  ;D I actually have a question and maybe you can help, on 3 out of the four pipes, the screws are frozen and one of the collars is frozen. I haven't tried heating them up yet, but that may be the only option left...any suggestions?

Offline hoodellyhoo

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Re: My first 750... Update:1/24/09
« Reply #15 on: January 24, 2010, 09:05:02 pm »
Thanks for the compliments LouB.

I have never taken the exhaust off a bike like this (it's different from my 350) so I would try and search this website for an answer. I'm fairly certain the topic has been covered.
1972 CB350F (Back from the Dead!)- http://forums.sohc4.net/index.php?topic=20822.0
1965? S65 - Coming Eventually!
1972 CB750K2 (father-son project)
1976 CB750K6- (sold) http://forums.sohc4.net/index.php?topic=96859.0
1976 CB750K6 (sold)- http://forums.sohc4.net/index.php?topic=62569.0

Offline dhall57

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Re: My first 750... Update:1/24/09
« Reply #16 on: January 25, 2010, 12:10:17 am »
How cold is there? Im in NC and we've had several weeks of low teens and highs in the mid 20's, but no snow. My niece married a Brain Yarrington who is from Wisconson and he says the winters are brutal. I don't guess your paths have crossed by chance. I admire you and all the other forum members who buy non running bikes and bring them back to life. My confidence level is not quite that high so I bought a running 76 CB750 in good shape. But I would like to take a stab at maybe a 175 or 360 Honda rebuild project.

Your 750 sounded pretty good in the start up video, Are you going to have to do any engine work on her? Is your goal to try to go back to factory specs. like paint,seat,pipes etc. Keep us informed on your progress. Good luck, your going to have a nice K6 when your done.
1970 CB750KO
1971 CB500KO-project bike
1973 CB350G- project bike
1974 CB750K4-project bike
1974 CB750K4
1976 CB750K6
1977 GL1000
1997 Harley Wideglide

Offline Johnie

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Re: My first 750... Update:1/24/09
« Reply #17 on: January 25, 2010, 06:44:37 am »
Man, nice job!! I am jealous...I just got a '76 K6 and am in the process of total tear down. I know what you mean about the dirt! My bike had been "stored" for 14yrs and I think some of the crud is that old! I was planning on rebuilding the carbs and I'm pretty sure the stock jets are 105 on this bike. Anyway, great job on getting it running and going for a ride in Wisconsin in January!  ;D I actually have a question and maybe you can help, on 3 out of the four pipes, the screws are frozen and one of the collars is frozen. I haven't tried heating them up yet, but that may be the only option left...any suggestions?

Lou...on those collor screws for the exhaust put some penetrating oil on them. I used an impact wrench and they came out nice on a bike that sat for 19 years. For the bolts on the exhaust pipes I used some PB Blaster penetrating oil and that should help. I would use heat as a last resort. Before I would use heat I would just take a big wrench and break them off.
« Last Edit: January 25, 2010, 06:49:26 am by Johnie »
1969 CB750K0 - Candy Blue Green
1970 CB750K0 - Candy Ruby Red
1970 CB750K1 - Candy Gold
1973 CB750K3 - Candy Bacchus Olive
1974 CB750K4 - Flake Sunrise Orange
2000 1500 SE Wing
1971 CB750K1 (next project)
1969 CB750K0 (The Patina Bike - Blue / Green)

Oshkosh, WI  USA

Offline Johnie

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Re: My first 750... Update:1/24/09
« Reply #18 on: January 25, 2010, 06:46:35 am »
Hey T...you must have the same luck as me. Take the bike out for a quick test and there is a cop sitting there. He probably figured you were just another crazy college guy!!! ;D Keep up the good work.
1969 CB750K0 - Candy Blue Green
1970 CB750K0 - Candy Ruby Red
1970 CB750K1 - Candy Gold
1973 CB750K3 - Candy Bacchus Olive
1974 CB750K4 - Flake Sunrise Orange
2000 1500 SE Wing
1971 CB750K1 (next project)
1969 CB750K0 (The Patina Bike - Blue / Green)

Oshkosh, WI  USA

Offline hoodellyhoo

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Re: My first 750... Update:1/24/09
« Reply #19 on: January 25, 2010, 09:22:22 am »
Hey T...you must have the same luck as me. Take the bike out for a quick test and there is a cop sitting there. He probably figured you were just another crazy college guy!!! ;D Keep up the good work.

Lucky for me he/she was heading towards a one-way street so they couldn't loop around the block and catch me ;D I also realised after I got back that I forgot to put my wallet in my work bibs so add that to the list of traffic citations I missed out on.

How cold is there? Im in NC and we've had several weeks of low teens and highs in the mid 20's, but no snow. My niece married a Brain Yarrington who is from Wisconson and he says the winters are brutal. I don't guess your paths have crossed by chance. I admire you and all the other forum members who buy non running bikes and bring them back to life. My confidence level is not quite that high so I bought a running 76 CB750 in good shape. But I would like to take a stab at maybe a 175 or 360 Honda rebuild project.

Your 750 sounded pretty good in the start up video, Are you going to have to do any engine work on her? Is your goal to try to go back to factory specs. like paint,seat,pipes etc. Keep us informed on your progress. Good luck, your going to have a nice K6 when your done.

Yesterday was barely above freezing but now I guess we'll be dropping down again. Some winters can be brutal, but I think being a motorcyclist makes it worse :)

I'm hoping not to have to do any engine work, just ignition and carburation adjustments. My plan for now is to get the bike up and going for as cheaply as possible right now. I bought it at a time when I really shouldn't have (no job) so if I suddenly find myself in total financial ruin I have a bike that it at least sellable. My goal is to end up with a stock looking bike, but as you can see I'm missing/need all those pretty body parts on my current bike. That is why I'm thinking of selling this bike in the spring and using that money to buy this bike my friend is selling:




It is another K6 but obviously has the original bodywork and is in nice shape (just dirty). It's another non-runner but it has a title. All it should need is front signals, a headlight, and a seat (and the usual going-over like I'm doing on my current bike).


1972 CB350F (Back from the Dead!)- http://forums.sohc4.net/index.php?topic=20822.0
1965? S65 - Coming Eventually!
1972 CB750K2 (father-son project)
1976 CB750K6- (sold) http://forums.sohc4.net/index.php?topic=96859.0
1976 CB750K6 (sold)- http://forums.sohc4.net/index.php?topic=62569.0

Offline Johnie

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Re: My first 750... Update:1/24/09
« Reply #20 on: January 25, 2010, 10:31:49 am »
So when are we going to load that other bike up T? I see that one needs the headlight ring too? I only have one here. ;) I see some of those blue electrical connections in that bucket of your next project. Those scare me. I hope the PO did not put a ton of those things on that harness. If you need to hide it from the girlfriend let me know. I have a secret storage area you can use on the south side of town and she will not know it is there.
« Last Edit: January 25, 2010, 01:18:45 pm by Johnie »
1969 CB750K0 - Candy Blue Green
1970 CB750K0 - Candy Ruby Red
1970 CB750K1 - Candy Gold
1973 CB750K3 - Candy Bacchus Olive
1974 CB750K4 - Flake Sunrise Orange
2000 1500 SE Wing
1971 CB750K1 (next project)
1969 CB750K0 (The Patina Bike - Blue / Green)

Oshkosh, WI  USA

Offline hoodellyhoo

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Re: My first 750... Update:1/24/09
« Reply #21 on: January 25, 2010, 12:15:39 pm »
So when are we going to load that other bike up T? I see that one needs the headlight ring too? I only have one here. ;) I see some of those blue electrical connections in that bucket of your next project. Those scare me. I hope the PO did not put a ton of those things on that harness. If you need to hide it from the girlfriend let me know. I have a secret storage area you can use on the south side of town you can use and she will not know it is there.

I saw those blue connectors too. Hopefully there's nothing butchered. I had some "extra" wires in my 750 but luckily they weren't soldered into anything so I pulled them out.

You're really good at getting me in trouble with the girlfriend ;D I don't think the waters have settled enough yet concerning the current bike. Maybe by springtime I can get away with pulling another stunt ;D
1972 CB350F (Back from the Dead!)- http://forums.sohc4.net/index.php?topic=20822.0
1965? S65 - Coming Eventually!
1972 CB750K2 (father-son project)
1976 CB750K6- (sold) http://forums.sohc4.net/index.php?topic=96859.0
1976 CB750K6 (sold)- http://forums.sohc4.net/index.php?topic=62569.0

Offline Johnie

  • Really Old Timer ...
  • *******
  • Posts: 7,729
Re: My first 750... Update:1/24/09
« Reply #22 on: January 25, 2010, 01:20:37 pm »
So when are we going to load that other bike up T? I see that one needs the headlight ring too? I only have one here. ;) I see some of those blue electrical connections in that bucket of your next project. Those scare me. I hope the PO did not put a ton of those things on that harness. If you need to hide it from the girlfriend let me know. I have a secret storage area you can use on the south side of town you can use and she will not know it is there.



I saw those blue connectors too. Hopefully there's nothing butchered. I had some "extra" wires in my 750 but luckily they weren't soldered into anything so I pulled them out.

You're really good at getting me in trouble with the girlfriend ;D I don't think the waters have settled enough yet concerning the current bike. Maybe by springtime I can get away with pulling another stunt ;D

Shhhh...this is top secret stuff here... 8)
1969 CB750K0 - Candy Blue Green
1970 CB750K0 - Candy Ruby Red
1970 CB750K1 - Candy Gold
1973 CB750K3 - Candy Bacchus Olive
1974 CB750K4 - Flake Sunrise Orange
2000 1500 SE Wing
1971 CB750K1 (next project)
1969 CB750K0 (The Patina Bike - Blue / Green)

Oshkosh, WI  USA

LouB

  • Guest
Re: My first 750... Update:1/24/09
« Reply #23 on: January 25, 2010, 05:10:27 pm »
Lou...on those collor screws for the exhaust put some penetrating oil on them. I used an impact wrench and they came out nice on a bike that sat for 19 years. For the bolts on the exhaust pipes I used some PB Blaster penetrating oil and that should help. I would use heat as a last resort. Before I would use heat I would just take a big wrench and break them off.
[/quote]

Thanks for the tip Johnie and I'll try the PB Blaster. I read another post on here that said to use "judicious heat", but I really don't want to mess the head up. I'll let you know how it turns out!  ;D

Offline hoodellyhoo

  • CB350F
  • Master
  • *****
  • Posts: 1,698
Re: My first 750... Update:1/24/09
« Reply #24 on: March 30, 2010, 07:16:47 pm »
Been a while since I've updated this.....

Since getting the bike running I've been busy getting it running better and cleaning it up in order to sell it. Even though I've gotten my job back, I need the money pretty bad. I'll hopefully get that red 76K soon but it will be a long term project.

A few weeks ago I got the 350 and the 750 out for the first spring rides. I gave both bikes a quick bath, which hardly made a dent in all the dirt and surface rust on the 750. Thanks to Shenanigans for the rear turn signal to replace my missing one, and thanks to Johnie for the headlight ring assembly. (I still owe you a milkshake for that. I haven't forgotten ;))


A few days later I did a better tuneup on the 750. Up to this point I was surprised how quiet the motor was running. I found out that this was because the valves were all tight. With them set properly, there is deffinitely more engine noise. Oh well. I also adjusted the cam chain and that may not have worked. It seems noisier than it should be but then again they say the 750 is a louder motor. I guess I just don't know how these motors are supposed to sound. I'm spoiled by the quiet 350 ;D

At this time I also did a carb synch. At least the best one I could do. Getting the tubes in around the choke linkage for the 2 and 3 cylinders was a total PITA. I was also having troubles with leaking carb bowls too, which is dumb because when I rebuilt the carbs I put in all nre gaskets. So far I've replaced two of the new gaskets with the old crusty ones and all seems okay, but annoying none the less. I put a good 10 miles on the bike that night (the first "real" ride) and took it up to 50 mph with no problems. I don't know if the sprokets are stock ratios, but this thing is geared tall. Quite a change of pace from the 350.




Today I spent a good 3 hours cleaning the bike. Even then I only had time to concentrate on the more visible areas. I degreased most of the bike with simple green, knocked most of the surface rust on the chrome off with steel wool, and polished the better chrome pieces. The exhaust looks quite a bit better, but up close there's plenty of surface rust left. Overall the bike looks more presentable, especially in pictures.






If I had a bit more money to throw at it, the bike still needs new tires, fork seals, and steering head bearings (and probably a swingarm rebuild), but those will have to be left for the next owner. I'll put it up for sale soon and hopefully get a decent price, although I don't quite know what that would be. It's been a fun experience and I deffinitely look forward to getting another  750 in the future. It's nice to have a big stable bike with power to spare and cruises so well.

« Last Edit: March 30, 2010, 07:19:25 pm by hoodellyhoo »
1972 CB350F (Back from the Dead!)- http://forums.sohc4.net/index.php?topic=20822.0
1965? S65 - Coming Eventually!
1972 CB750K2 (father-son project)
1976 CB750K6- (sold) http://forums.sohc4.net/index.php?topic=96859.0
1976 CB750K6 (sold)- http://forums.sohc4.net/index.php?topic=62569.0

 

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Honda