Author Topic: 1978 CB750 F3-- final assembly (Read 10977 times)

Roland · « **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

Roland · « **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

Roland · « **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

Roland · « **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.

Roland · « **Reply #4 on:** January 05, 2014, 07:29:33 am »

More work on the seat pan and rear hoop

Roland · « **Reply #5 on:** January 05, 2014, 07:31:12 am »

Ultimate Pamco is installed

New fuse box is made and installed

tweakin · « **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?

Roland · « **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.

Roland · « **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.

Roland · « **Reply #9 on:** January 05, 2014, 07:46:36 am »

Oil pump rebuild

tweakin · « **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.

Roland · « **Reply #11 on:** January 05, 2014, 07:51:02 am »

Time for some new paint to get rid of this horrible green.

Roland · « **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!

Roland · « **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

Roland · « **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.

Roland · « **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.

cheftuskey121 · « **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!

martin99 · « **Reply #17 on:** January 05, 2014, 09:36:48 am »

Very, very nice. I love that paint job.

Stev-o · « **Reply #18 on:** January 05, 2014, 10:03:24 am »

Impressive work on this bike, what a transformation! Subscribed....

Roland · « **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!

Roland · « **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...

Roland · « **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.

tweakin · « **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.

jerry h · « **Reply #23 on:** January 18, 2014, 10:26:03 am »

Your previous "finished" picture was really sharp! Looking forward to seeing the new updates.

Roland · « **Reply #24 on:** February 24, 2014, 04:35:22 pm »

This bike is coming together, here are a few progress photos of the assembly.

News:

Author Topic: 1978 CB750 F3-- final assembly (Read 10977 times)