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Author Topic: 1978 CB750 F3-- final assembly  (Read 11237 times)

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Offline Roland

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1978 CB750 F3-- final assembly
« on: January 04, 2014, 12:29:08 PM »
Here is the beginning of a build that I threw together last spring for my wife to ride during the summer.  Now that the riding season is over here in Colorado it is getting finished completely.




Carbs were in pretty bad shape internally

« Last Edit: April 06, 2014, 06:44:40 AM by Roland »
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Offline Roland

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Re: 1978 CB750 F2
« Reply #1 on: January 04, 2014, 12:34:12 PM »
Someone had let the chain hit the case and cracked it pretty good



Getting it torn down



Here's a couple boxes of parts in order to get this pig on the road..



What a mess

« Last Edit: January 15, 2014, 06:02:30 PM by Roland »
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Offline Roland

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Re: 1978 CB750 F2
« Reply #2 on: January 04, 2014, 12:39:05 PM »
First batch of powder is complete and looking good.



Pipes on, motor tuned, swing arm bushings in and swing arm installed on bike



Rear hoop done and working on mounting the rear fender and tail light



« Last Edit: January 15, 2014, 06:04:03 PM by Roland »
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Offline Roland

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Re: 1978 CB750 F2
« Reply #3 on: January 04, 2014, 12:40:25 PM »
JB Weld is the temporary fix for the cracked case.  Once the motor gets rebuilt I will weld it closed.

« Last Edit: January 15, 2014, 06:04:34 PM by Roland »
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Offline Roland

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Re: 1978 CB750 F2
« Reply #4 on: January 05, 2014, 07:29:33 AM »
More work on the seat pan and rear hoop






« Last Edit: January 15, 2014, 06:05:44 PM by Roland »
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Offline Roland

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Re: 1978 CB750 F2
« Reply #5 on: January 05, 2014, 07:31:12 AM »
Ultimate Pamco is installed



New fuse box is made and installed

« Last Edit: January 15, 2014, 06:13:30 PM by Roland »
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Offline tweakin

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Re: 1978 CB750 F2
« Reply #6 on: January 05, 2014, 07:34:33 AM »
Coming along nicely Roland, keep it up.  Is the lower case actually cracked through or just chain rub lines from a loose chain?
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Offline Roland

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Re: 1978 CB750 F2
« Reply #7 on: January 05, 2014, 07:38:21 AM »
Now for the final work on the carbs.  Remove the pilot jets with some vise grips and a piece of leather to keep from damaging the jet.





Once I installed the new jets I found that they were really loose in the holes.  I took a pair of scissors and scored the jet where the press fit is.  That created a small barb in the brass so now when I press in the jet it is a nice snug fit.

 



« Last Edit: January 15, 2014, 06:08:43 PM by Roland »
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Offline Roland

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Re: 1978 CB750 F2
« Reply #8 on: January 05, 2014, 07:43:43 AM »
Quote from: tweakin on January 05, 2014, 07:34:33 AM
Coming along nicely Roland, keep it up.  Is the lower case actually cracked through or just chain rub lines from a loose chain?

Thanks, it was actually cracked through.  That little pick is actually poked all the way through into the motor.  As you know the metal is pretty thick right there but it was still pretty damaged on the inside.  The JB Weld got us through the summer with no more leak but now that crack has been welded closed.
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Offline Roland

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Re: 1978 CB750 F2
« Reply #9 on: January 05, 2014, 07:46:36 AM »
Oil pump rebuild



« Last Edit: January 11, 2014, 10:12:44 AM by Roland »
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Offline tweakin

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Re: 1978 CB750 F2
« Reply #10 on: January 05, 2014, 07:47:42 AM »
Cool.  I was going to offer a lower case for the price of shipping if you wanted it.  Since you welded it up you probably no longer need it.

Quote from: Roland on January 05, 2014, 07:43:43 AM
Quote from: tweakin on January 05, 2014, 07:34:33 AM
Coming along nicely Roland, keep it up.  Is the lower case actually cracked through or just chain rub lines from a loose chain?

Thanks, it was actually cracked through.  That little pick is actually poked all the way through into the motor.  As you know the metal is pretty thick right there but it was still pretty damaged on the inside.  The JB Weld got us through the summer with no more leak but now that crack has been welded closed.
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Offline Roland

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Re: 1978 CB750 F2
« Reply #11 on: January 05, 2014, 07:51:02 AM »
Time for some new paint to get rid of this horrible green.







« Last Edit: January 15, 2014, 06:10:21 PM by Roland »
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Offline Roland

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Re: 1978 CB750 F2
« Reply #12 on: January 05, 2014, 07:54:38 AM »
Quote from: tweakin on January 05, 2014, 07:47:42 AM
Cool.  I was going to offer a lower case for the price of shipping if you wanted it.  Since you welded it up you probably no longer need it.

Quote from: Roland on January 05, 2014, 07:43:43 AM
Quote from: tweakin on January 05, 2014, 07:34:33 AM
Coming along nicely Roland, keep it up.  Is the lower case actually cracked through or just chain rub lines from a loose chain?

Thanks, it was actually cracked through.  That little pick is actually poked all the way through into the motor.  As you know the metal is pretty thick right there but it was still pretty damaged on the inside.  The JB Weld got us through the summer with no more leak but now that crack has been welded closed.

Wow tweakin, that is a very generous offer!  I think mine is good to go now, I should get it back from powder next week, then I can start putting things back together.

Thanks again!
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Offline Roland

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Re: 1978 CB750 F2
« Reply #13 on: January 05, 2014, 07:57:39 AM »
I wanted to get rid of the stock warning light cluster and tighten up the dash a little so I made up a new version of the stock mount.

Before


After


« Last Edit: January 11, 2014, 10:14:34 AM by Roland »
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Offline Roland

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Re: 1978 CB750 F2
« Reply #14 on: January 05, 2014, 08:01:33 AM »
Here is a picture of the final product for the summer.  My wife was real happy with it but it really ate at me all summer seeing the pitted chrome, unfinished frame and unfinished motor.  The motor actually blew smoke all summer.

« Last Edit: January 11, 2014, 10:15:23 AM by Roland »
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Offline Roland

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Re: 1978 CB750 F2
« Reply #15 on: January 05, 2014, 08:07:33 AM »
Here is what it looks like now...

Frame kit installed



Chrome is complete (thanks to Ogden Chrome in Utah)



Motor is at the machine shop and everything else is either on a shelf or at the powder coater.
« Last Edit: January 11, 2014, 10:20:18 AM by Roland »
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Offline cheftuskey121

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Re: 1978 CB750 F2
« Reply #16 on: January 05, 2014, 09:12:17 AM »
I am so glad to see this as a project thread. I remember seeing it with your other F, (it was my wallpaper for awhile). very cool man. your wife rocks!
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Offline martin99

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Re: 1978 CB750 F2
« Reply #17 on: January 05, 2014, 09:36:48 AM »
Very, very nice. I love that paint job.
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Build threads:
77 750F2 Refresh Project http://forums.sohc4.net/index.php?topic=144075.0
TRIBSA http://forums.sohc4.net/index.php/topic,160296.0.html

1977 CB750 F2
1958 Norton Model 99
2011 Triumph Street Triple 675

Offline Stev-o

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Re: 1978 CB750 F2
« Reply #18 on: January 05, 2014, 10:03:24 AM »
Impressive work on this bike, what a transformation!   Subscribed....
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'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline Roland

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Re: 1978 CB750 F2
« Reply #19 on: January 15, 2014, 05:58:49 PM »
I received the frame and other parts from the powder coater today, now it time to get this bike put back together!



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Offline Roland

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Re: 1978 CB750 F2
« Reply #20 on: January 15, 2014, 06:15:01 PM »
Photobucket is pissing me off!!  It keeps making me paste in new links for all these pictures...
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Offline Roland

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Re: 1978 CB750 F2 -- final assembly
« Reply #21 on: January 18, 2014, 06:17:18 AM »
I was able to make little progress yesterday afternoon, hopefully by the end of the weekend I will have this bike mostly together.

« Last Edit: January 18, 2014, 06:19:08 AM by Roland »
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Offline tweakin

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Re: 1978 CB750 F2-- final assembly
« Reply #22 on: January 18, 2014, 06:30:20 AM »
Looking good!  Man, I love final assembly time.
Quote from: Roland on January 18, 2014, 06:17:18 AM
I was able to make little progress yesterday afternoon, hopefully by the end of the weekend I will have this bike mostly together.


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Offline jerry h

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Re: 1978 CB750 F2-- final assembly
« Reply #23 on: January 18, 2014, 10:26:03 AM »
Your previous "finished" picture was really sharp!  Looking forward to seeing the new updates.
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"It is not the critic who counts, the credit belongs to the man who is actually in the arena, whose hands are covered with grease and oil."

K2 http://forums.sohc4.net/index.php/topic,105097.0.html

Offline Roland

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Re: 1978 CB750 F2-- final assembly
« Reply #24 on: February 24, 2014, 04:35:22 PM »
This bike is coming together, here are a few progress photos of the assembly.



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