Author Topic: TAO --- The South Seattle Cafe Project  (Read 151245 times)

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Offline tweakin

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Re: The South Seattle CB750 Cafe project- complete rebuild
« Reply #25 on: September 19, 2010, 06:39:28 AM »
look what I found with a quick search on ebay.

http://cgi.ebay.com/ebaymotors/HONDA-REAR-WHEEL-FLANGE-FINAL-DRIVE-CB750-K-F-A-77-78-_W0QQcmdZViewItemQQhashZitem255d4956a4QQitemZ160478877348QQptZMotorcyclesQ5fPartsQ5fAccessories

Also not sure if you saw my last post but I have three almost new pistons for your brakes.  I will hook you up with a screaming deal on.

 
Thanks Rick! I have been planning on splitting the cases from the beginning just to poke around in there and see if the bearings and chains are ok so no biggie.

Well did some more cleaning today. Got the frame degreased and cut off a few of the tabs on the tail section I won't need. I also cleaned/degreased the rest of the parts and got them all tagged and bagged. Not all went well though. I decided to try and get the wheel bearings out again. I managed to get them all out but I need a new final drive and bearing lock nut. For some reason the rear drive and the nut got cross threaded on removal and the threads are screwed. I don't think the wheel bearings have ever been changed because there was only one set of dimples so maybe they just got galled after so many years of neglect. So if anyone has a final drive I really need one!

Offline brandEn

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Re: The South Seattle CB750 Cafe project- complete rebuild
« Reply #26 on: September 19, 2010, 10:55:55 AM »
Thanks Tige, I will take the pistons for sure! Hopefully that rear flange will last a couple days till I get paid.

Offline bruisedlee

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Re: The South Seattle CB750 Cafe project- complete rebuild
« Reply #27 on: September 19, 2010, 11:00:45 AM »
i was eyeing that bike on craigslist!!

good to see it went into good hands.  is the dad being cool about the title?

Offline brandEn

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Re: The South Seattle CB750 Cafe project- complete rebuild
« Reply #28 on: September 19, 2010, 11:07:32 AM »
i was eyeing that bike on craigslist!!

good to see it went into good hands.  is the dad being cool about the title?

Yea, Just need to get the paperwork back. Luckily there is old registration documents I have so even if he falls through I will still be able to title it.

Offline brandEn

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Re: The South Seattle CB750 Cafe project- complete rebuild
« Reply #29 on: September 20, 2010, 04:56:59 PM »
Well I have been thinking hard about a paint color and paint scheme. I am not a big fan of the Honda Element but I love the color "Citrus Fire Metallic." I am thinking of going for this color as the base color with some sort of gloss black highlight like an offset racing stripe or design.

« Last Edit: September 20, 2010, 05:02:45 PM by BWJ »

Offline Stev-o

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Re: The South Seattle CB750 Cafe project- complete rebuild
« Reply #30 on: September 20, 2010, 05:28:50 PM »
I too, like the color, but not the vehicle. Go for it!
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline brandEn

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Re: The South Seattle CB750 Cafe project- complete rebuild
« Reply #31 on: September 22, 2010, 01:42:48 AM »
So does anyone have any input they would like to contribute about the color.....


I got some more work done over the last day or two. I drilled my rotors and discovered that was a time consuming job. I found a template here on the forum, printed it up, taped it on the rotors, and started drilling. Luckily I have a bunch of Cobalt bits and some countersinks. I media blasted my battery tray, oil tank, and rear master cylinder. The master has some corrosion damage on it but I still think it will be usable once I rebuild it. I hope anyway. I think it will just get rattle canned because I would hate to powdercoat it just to find out it needs to be replaced. The next few items on my to do list is to paint the rotors and rear master and bracket with some caliper paint. I also need to find a shop to remove the tires from my Comstars.

Little paint and will look good as new


Little bit of corrosion








Oil tank and battery tray ready for powdercoat
« Last Edit: September 22, 2010, 01:47:03 AM by BWJ »

Offline Stev-o

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Re: The South Seattle CB750 Cafe project- complete rebuild
« Reply #32 on: September 22, 2010, 05:56:20 AM »
Rotors look great!
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........


Offline brandEn

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Re: The South Seattle CB750 Cafe project- complete rebuild
« Reply #34 on: September 24, 2010, 04:36:41 PM »
Started to polish the controls yesterday. I got most of it done on a buffing wheel on a floor grinder. I need to finish it up with my dremel to get all the nooks I couldn't reach. I had to polish out a knick I made when the buffer grabbed the piece from my hand and threw it on the floor. ooops. I also ordered my first part, a replacement final drive and bearing retainer for $12.99. Score!


Offline tweakin

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Re: The South Seattle CB750 Cafe project- complete rebuild
« Reply #35 on: September 24, 2010, 08:55:55 PM »
Looking good.  Polishing parts is a pain in the arse but the end product is worth it.

Started to polish the controls yesterday. I got most of it done on a buffing wheel on a floor grinder. I need to finish it up with my dremel to get all the nooks I couldn't reach. I had to polish out a knick I made when the buffer grabbed the piece from my hand and threw it on the floor. ooops. I also ordered my first part, a replacement final drive and bearing retainer for $12.99. Score!



Offline brandEn

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Re: The South Seattle CB750 Cafe project- complete rebuild
« Reply #36 on: September 24, 2010, 11:25:19 PM »
Yup, its not to much fun polishing but I like the way it looks for sure. Hopefully I can get these finished with only an hour or two more with my dremel.

Offline brandEn

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Re: The South Seattle CB750 Cafe project- complete rebuild
« Reply #37 on: September 30, 2010, 08:03:09 PM »
Well this week has been one tragedy after another. First my new final drive came in and I screwed up the threads on the bearing retainer removing the seal. Its not to bad cuz I think it can be salvaged with a tap of the same thread pitch. Second, I had to totally dismantle my carbs for cleaning. It took me a while to figure out how to put it together but finally got it. However, I need a new float bowl because the brass tube is broken. I also need a new spring for the #2 slide and needle assembly. Third, I got my engine torn down and the cases split. I was a little nervous doing this for the first time but it was all pretty straight forward and the internals look good just from what I have inspected already. But.... despite all my effort to avoid snapping the studs on the top end three of them broke. I had them soaking in penetrant for over a week, placed the top case in the oven @ 300 deg for 10 minutes and used two pairs of vice grips to remove them. They where all pretty stubborn and five where REALLY stubborn and only managed to remove two of them and snapping the other three. I am pretty bummed and I was really optimistic on removing them without breaking any but good ole murphy's law took over. I just hope I can get those three out, just need to figure out how to do it.

Not all went bad though, I made a new guage bracket that looks like it should work pretty well. I also got my rotors painted.
« Last Edit: September 30, 2010, 08:07:05 PM by BWJ »

Offline tweakin

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Re: The South Seattle CB750 Cafe project- complete rebuild
« Reply #38 on: September 30, 2010, 08:47:44 PM »
That blows. Those studs can be a biatch, been there and broke the studs and have the extra case to prove it...  should have called me, I would have given you a hand.  How much stud is showing?  Enough to weld a bolt on to?  I didn't have good luck using local machine shops to fix my cases so I bought some "new to me cases on ebay"  Luckily the second time trying to remove the studs worked.

I dropped my rotors off to be resurfaced by a local shop and they totally F'd up my rear, I think I might need to find a new one.  Not a good week in cb land, these bikes can bust our balls at times....

Offline brandEn

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Re: The South Seattle CB750 Cafe project- complete rebuild
« Reply #39 on: September 30, 2010, 08:59:53 PM »
I sure hope there is enough to get em out. I was thinking about drilling and trying an ez out extractor but a machine shop may be the best option. I heated up around the stubs with my torch and soaked liberally with some Kroil. Hopefully that helped things a bit. I should of called ya for sure. Might of been able to get them out if we doubled nutted the top and used vice grips on the bottom.










Offline haggeo

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Re: The South Seattle CB750 Cafe project- complete rebuild
« Reply #40 on: September 30, 2010, 11:53:15 PM »
I sure hope there is enough to get em out. I was thinking about drilling and trying an ez out extractor but a machine shop may be the best option. I heated up around the stubs with my torch and soaked liberally with some Kroil. Hopefully that helped things a bit. I should of called ya for sure. Might of been able to get them out if we doubled nutted the top and used vice grips on the bottom.











don't drill them out! you have plenty of stud left for a welder to weld a bolt on top and turn those out. i did the same thing, well, i only snapped one but the welder thanked me for not messing it up worse by trying to drill.

Offline hotroder

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Re: The South Seattle CB750 Cafe project- complete rebuild
« Reply #41 on: October 01, 2010, 01:04:59 AM »
I agree don't drill them
I would weld a nut to the stud, let it cool for quite a while then heat up the casing with a torch then try and loosen.
  :)

Offline haggeo

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Re: The South Seattle CB750 Cafe project- complete rebuild
« Reply #42 on: October 01, 2010, 10:00:29 AM »
this is what i had after i snapped mine.


and this is how the welder got it out in about 10-15 min.

Offline brandEn

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Re: The South Seattle CB750 Cafe project- complete rebuild
« Reply #43 on: October 01, 2010, 12:57:35 PM »
Thanks for the pics haggeo. I will take my case to a machine shop next week to see what can be done.

Here are a few pics I snapped from this week.


One of the carb bowls before cleaning.


The guage bracket I made to eliminate that huge idiot light cluster. I moved the guages in about 1/4" and down the same.




Here is how the left foot rest bracket will look. I chopped it down since my bike will only be for a single rider.
« Last Edit: October 01, 2010, 01:01:28 PM by BWJ »

Offline brandEn

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Re: The South Seattle CB750 Cafe project- complete rebuild
« Reply #44 on: October 01, 2010, 01:05:34 PM »
Here is most of the bottom end all cleaned up and sorted as best as I could manage


Here are some random shots of the guts. If ya see something I should take a closer look at please let me know!



















Offline brandEn

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Re: The South Seattle CB750 Cafe project- complete rebuild
« Reply #45 on: October 01, 2010, 01:07:31 PM »
This was definately a test of my patience...  ???

Offline MasterChief750

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Re: The South Seattle CB750 Cafe project- complete rebuild
« Reply #46 on: October 01, 2010, 02:18:55 PM »
oh yes it is, wait until you get to the choke linkage
1978 CB750 K - Project Red Headed Step Child
1976 CB750 K - Drag Bike
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Offline tweakin

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Re: The South Seattle CB750 Cafe project- complete rebuild
« Reply #47 on: October 01, 2010, 02:24:45 PM »
Man, you have been flippin busy.

Offline brandEn

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Re: The South Seattle CB750 Cafe project
« Reply #48 on: October 03, 2010, 11:35:44 AM »
In case I don't have any luck removing those damn broken studs I have started looking for a replacement top case. Will a 78 CB750 K case work? Are all the engine cases the same?

Offline tweakin

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Re: The South Seattle CB750 Cafe project
« Reply #49 on: October 03, 2010, 01:38:33 PM »
I am using 78K cases on my 77f.  I am using a complete K case because I did not want to mix and match top and bottom cases from different used bikes.  I would get new clam bearings if it were me.

 
In case I don't have any luck removing those damn broken studs I have started looking for a replacement top case. Will a 78 CB750 K case work? Are all the engine cases the same?