Author Topic: My first project (Read 3843 times)

Finley · « **on:** February 16, 2012, 11:45:10 AM »

Hi all, I recently purchased a CB750K that had been sitting in a garage for close to fifteen years. Easily the best craigslist find I've ever had. The guy I bought it from said it was a '73 but when I looked up the numbers it matched up with a '72. It has some K1 parts and some K3 parts on it. He had it all dressed up for touring with a hideous faring, hump back seat with a sissy bar and bar spacers to put the bars back two inches and big high rise bars. but other than cosmetic stuff it had been very well cared for. I'm pretty sure he also put slightly longer fork tubes on it and there's a 4-1 exhaust that I can't identify.

This will be my first time working on motorcycles and I'm pretty excited to make my vision of a cafe come true. I'll be posting up some pictures when I get them uploaded. Hopefully it goes smoothly. Haha.

I will have some nice parts to sell/trade if anyone is interested, such as a faring, luggage rack/sissy bar, hump back seat and rear fender and tail light.

Really? · « **Reply #1 on:** February 16, 2012, 11:51:47 AM »

Since you next post will be #6, you should post some pics. I know you said that but now you are over your limit.

Welcome to the forum!

Johnie · « **Reply #2 on:** February 16, 2012, 12:19:12 PM »

Welcome...did we say how much we like pics here...

Can not wait to see it. Click the pic bro...

lucky · « **Reply #3 on:** February 16, 2012, 12:56:43 PM »

No pics....

?

Finley · « **Reply #4 on:** February 19, 2012, 09:37:52 AM »

Sorry for the delay. Here's some pics of what little progress i have made. I don't have any good pictures of the bike when i got it.

When I got the bike home

I was trying to picture it with a different seat and bars

Got it on a cinder block taking it apart

Now its almost fully disasembled

I'll get some more pictures of the bike and parts when i get a free moment.

Johnie · « **Reply #5 on:** February 19, 2012, 09:42:01 AM »

Nice man...for sure do-able. Like the pics!!!

Really? · « **Reply #6 on:** February 19, 2012, 12:03:53 PM »

You sure are faster than me getting it apart. I still need to get the ATF/Acetone mix in the cyl's to try and break the motor loose. Hopefully today I will do that. Oh, I did clean up a seat pin and bend it straight today so I could mount the seat, woohoo.

wedoo2 · « **Reply #7 on:** February 19, 2012, 02:41:47 PM »

Can we see that fairing again? Too bad the tank has that ding in it.

Vbled1 · « **Reply #8 on:** February 19, 2012, 07:32:09 PM »

Nice work. What direction are you going with it? please dont put the crash bars back on please

Finley · « **Reply #9 on:** February 19, 2012, 08:25:01 PM »

Quote from: wedoo2 on February 19, 2012, 02:41:47 PM

Can we see that fairing again? Too bad the tank has that ding in it.

I was pretty bummed about the dent, but that seems to be the worst of it. Thankfully. Here's a picture of the fairing. The paint is bad and the windscreen is gone but, there aren't any cracks and it has the wire loom and brackets. If interested, make an offer.

Finley · « **Reply #10 on:** February 19, 2012, 08:27:37 PM »

Quote from: Vbled1 on February 19, 2012, 07:32:09 PM

Nice work. What direction are you going with it? please dont put the crash bars back on please

Haha, definitely won't be putting the crash bars back on. I'm going for a simple cafe in the spirit of the 60's and 70's. Clean and simple, I have always loved the look of cafe bikes and now I finally get the chance to build my own.

Finley · « **Reply #11 on:** February 19, 2012, 08:32:21 PM »

Finished getting everything removed down to the frame, so I can paint it this week. When I removed the headlight there was a nasty cob job of the electrical system, it was super knotted.

I have some other parts i have removed from the bike (rear fender, headlight ears, tail light and luggage rack w/ sissy bar) I'll be posting in the classifieds.

Really? · « **Reply #12 on:** February 19, 2012, 09:29:58 PM »

I think you can get a new harness for that year at cb750supply.com

I did for the 75 and was much happier for it. Cleaning the female ends of the bullet connectors can be a pain.

Finley · « **Reply #13 on:** February 19, 2012, 11:38:13 PM »

I'm gonna try and setup a simple one myself, I've never done one before. I hear it's super fun. Haha. I'm stripping everything that's not vital to the operation of the engine.

wedoo2 · « **Reply #14 on:** February 20, 2012, 02:55:51 AM »

Thanks Finley, just thought it was something else. I actually have its white cousin.

K5owner · « **Reply #15 on:** February 20, 2012, 03:00:30 AM »

The old wiring looks a bit worn & cobbled. If you're going the minimalist route; you might want to buy a new harness and weed out the wires you don't need. This way the color coding can match the OEM schematic.

Just a thought...
New harness http://www.partsnmore.com/parts/honda/cb750k/?filters[category]=electrical
*click on electrical, cursor down till you see the harness

GrandRapids750K3 · « **Reply #16 on:** February 20, 2012, 04:04:42 AM »

I picked up a new harness for K3 from parts and more and it was much easier then trying to work with the disaster that was there before hand...

Finley · « **Reply #17 on:** February 20, 2012, 04:13:54 PM »

Would it be easier to modify a new harness than trying to make a new one?

Finley · « **Reply #18 on:** February 20, 2012, 06:28:59 PM »

I talked to the guy i bought the bike from today and he gave me this picture of the bike from '80

K5owner · « **Reply #19 on:** February 21, 2012, 05:42:36 AM »

2 cents from someone who inherited the anal gene...

If you want to save some $$$ & your handy with wiring - I'd opt to make my own harness after sketching out a wiring diagram. Use as much of the old wires/connectors as possible. Make sure all the connectors/connections are clean. When making up wires/connections; make sure to crimp & solder. I would even put a dab of dielectric grease on all the connections (keep them from corroding & makes a water resistant connection).

Finley · « **Reply #20 on:** February 21, 2012, 04:34:30 PM »

So I took apart the front caliper today to clean and re-build, one of the bolts was seized in there and snapped flush with the body. It took about two hours and two snapped easy outs before deciding to drill it out and re-thread. Ended up drilling a hole from the outside of the caliper body for extraction. Really glad I didn't have to buy another one.

scottly · « **Reply #21 on:** February 22, 2012, 07:09:44 PM »

Man, I hope you get this bike put back together as fast as you tore it apart!

If you do decide to do your own harness, Tool Exchange in Prescott Valley has 4 foot (?) lengths of shrink tubing in various sizes.

Finley · « **Reply #22 on:** February 25, 2012, 06:08:14 PM »

Thanks scottly I'll check them out, I'm hoping to have this bike on the road in a week or two. I fixed the two dents in the tank and sanded, so it's ready for paint. Engine will hopefully be back in the frame Tuesday.

scottly · « **Reply #23 on:** March 14, 2012, 08:18:21 PM »

Hey Finley, how's the project going???

Finley · « **Reply #24 on:** March 18, 2012, 01:09:14 PM »

I have not had any spare time or money over the past few weeks, but before i stopped i did get some more stuff done. The frame has been cleaned up (cut and ground tabs/mounts) engine has been put back into frame, new bolt set installed in engine, swing arm cleaned up and installed, rear sets installed, tank painted, seat mounted (still need to figure out how to upholster), shortened on fork, but I think it's still gonna be way to long. The guy put different fork tubes on there, 27" long! I hopefully will have the bike rolling real soon, then a new harness. If anybody has some CB550 forks or even stock CB750 K2 forks let me know I want them! haha

scottly · « **Reply #25 on:** March 18, 2012, 07:29:37 PM »

Thanks for checking in!

Finley · « **Reply #26 on:** July 08, 2012, 04:46:27 PM »

Well after a long hiatus of sorts, I have been swamped with my jobs and getting ready to move. I finally have some info to share. I got the bike reassembled and close to done, The wire harness was redone, I've got new tires on it, some clip on bars, rebuilt the brake caliper, new gauges/top tree, installed the pamco, rebuilt carbs, new filters, new seat and rebuilt the forks. Today I got the bike idling steady without the choke and will be checking the timing tonight. When I get a moment I'll post up a picture of the bike.

SOHC4 Cafe Racer Fan · « **Reply #27 on:** July 08, 2012, 10:38:39 PM »

FYI - the PO may have thought it was a K3 if it was first sold in 1973. Same thing happened with my K2.

Finley · « **Reply #28 on:** July 17, 2012, 12:25:58 AM »

Well here it is for now, I plan on doing more work after we move. I rode it the other day and it was a treat to ride.

Finley · « **Reply #29 on:** July 17, 2012, 12:28:43 AM »

Quote from: CB750 Cafe Racer Fan on July 08, 2012, 10:38:39 PM

FYI - the PO may have thought it was a K3 if it was first sold in 1973. Same thing happened with my K2.

It has been registered as a 73 since the beginning, but when checking the numbers and frame badge its a K2. I did some more research and apparently it was the euro release in the planet blue color.

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Author Topic: My first project (Read 3843 times)