Author Topic: CB750 K4 Build - The Cafe Tracer  (Read 118820 times)

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Offline budman

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Re: CB750 K4 Build
« Reply #500 on: January 05, 2017, 11:10:20 AM »
I love the smooth bends of that Yamiya Yosh replica.

+1...first thing that came to mind when I saw it. Cant wait to hear it, Bud.

Me too.  I got the baffle with the larger I.D.
Bud

1973 CB750K3 Chopper
2021 Indian Scout

Offline budman

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Re: CB750 K4 Build
« Reply #501 on: January 05, 2017, 06:39:24 PM »
New shocks = clearance.

Bud

1973 CB750K3 Chopper
2021 Indian Scout

Offline budman

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Re: CB750 K4 Build
« Reply #502 on: January 07, 2017, 02:18:30 PM »
I've pretty much got the hand controls sorted out.  Now I can drill the holes for the switches and finish up the wiring.

Bud

1973 CB750K3 Chopper
2021 Indian Scout

Offline budman

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Re: CB750 K4 Build
« Reply #503 on: January 14, 2017, 06:21:04 PM »
The wiring is done.  All systems I can test are working.  I haven't tested the ignition yet because I haven't tried to crank the engine yet.  I want to polish the oil lines and put some oil in the engine before I try to crank it.  Also, because the engine isn't running yet I can't test the kill switch, but the relay is working, so that's a good sign.


Bud

1973 CB750K3 Chopper
2021 Indian Scout

Offline palepainter

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Re: CB750 K4 Build
« Reply #504 on: January 14, 2017, 06:32:20 PM »
Looking fantastic.  Really tidy and well planned.   

Offline markreimer

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Re: CB750 K4 Build
« Reply #505 on: January 14, 2017, 07:38:23 PM »
What shocks did you end up using?


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Offline budman

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Re: CB750 K4 Build
« Reply #506 on: January 14, 2017, 07:59:51 PM »
What shocks did you end up using?

They were sold as Cyclesmith shocks, but I'm pretty sure they're Emgo shocks.  I went with some 365's to gain some clearance.  I like the stance.
Bud

1973 CB750K3 Chopper
2021 Indian Scout

Offline budman

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Re: CB750 K4 Build
« Reply #507 on: January 14, 2017, 08:33:02 PM »
Looking fantastic.  Really tidy and well planned.

Thanks, Mike.  I planned out where all the big stuff was going to go.  Had to figure out a lot along the way.
Bud

1973 CB750K3 Chopper
2021 Indian Scout

Offline calj737

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Re: CB750 K4 Build
« Reply #508 on: January 15, 2017, 03:41:14 AM »
The wiring is done.  All systems I can test are working.  I haven't tested the ignition yet because I haven't tried to crank the engine yet.  I want to polish the oil lines and put some oil in the engine before I try to crank it.  Also, because the engine isn't running yet I can't test the kill switch, but the relay is working, so that's a good sign.
You can test anything with your meter. If it works with it, it will work in the real world. Have confidence! A tidy looking job.
'74 550 Build http://forums.sohc4.net/index.php?topic=126401.0
'73 500 Build http://forums.sohc4.net/index.php?topic=132935.0

"Of all tyrannies, a tyranny sincerely exercised for the good of it's victim may be the most oppressive. It may be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated, but those who torment us for our own good will torment us without end for they do so with the approval of their own conscience." - C.S. Lewis

Offline budman

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CB750 K4 Build
« Reply #509 on: January 15, 2017, 09:46:19 AM »
You can test anything with your meter. If it works with it, it will work in the real world. Have confidence! A tidy looking job.

Thanks.  I'm as confident as I can be at this point.  Continuity wise I've tested everything I can think to test, still I won't know 100% if all systems are go until I fire this puppy up.  That moment of truth...
Bud

1973 CB750K3 Chopper
2021 Indian Scout

Offline budman

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Re: CB750 K4 Build
« Reply #510 on: January 15, 2017, 12:17:00 PM »
I'm exhausted.

I also got the brake caliper installed.  Waiting on a new adjustment bolt and spring.

Things left to do:
Rebuild carbs.
Purchase an air cleaner.
Color sand and polish gas tank.
Clear coat wooden rear section one more time, wet sand and polish and install.
Special order and install throttle and clutch cables. (Don't pay attention to the clutch cable that's on the bike now.  It's just there for fitting and testing purposes.)
Install front brake line.
Hook up starter.
Add gas and oil.
Hit the start button.


« Last Edit: January 16, 2017, 07:13:21 AM by budman »
Bud

1973 CB750K3 Chopper
2021 Indian Scout

Offline calj737

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Re: CB750 K4 Build
« Reply #511 on: January 15, 2017, 01:14:27 PM »
You can test anything with your meter. If it works with it, it will work in the real world. Have confidence! A tidy looking job.

Thanks.  I'm as confident as I can be at this point.  Continuity wise I've tested everything I can think to test, still I won't know 100% if all systems are go until I fire this puppy up.  That moment of truth...
Hook up a battery, and use your meter to test the voltage at the switches. The engine doesn't need to fire except to test the charging system.
'74 550 Build http://forums.sohc4.net/index.php?topic=126401.0
'73 500 Build http://forums.sohc4.net/index.php?topic=132935.0

"Of all tyrannies, a tyranny sincerely exercised for the good of it's victim may be the most oppressive. It may be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated, but those who torment us for our own good will torment us without end for they do so with the approval of their own conscience." - C.S. Lewis

Offline budman

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Re: CB750 K4 Build
« Reply #512 on: January 15, 2017, 02:32:07 PM »
Hook up a battery, and use your meter to test the voltage at the switches. The engine doesn't need to fire except to test the charging system.

I've hooked up the battery and everything appears to be working properly.  Turn the key on and there's power to the ignition, headlight works, tail light works, brake light works, speedo light works, horn works, the kill switch relay disengages, the starter solenoid is engaging when I hit the start button...I think I'm good.
Bud

1973 CB750K3 Chopper
2021 Indian Scout

Offline Stev-o

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Re: CB750 K4 Build
« Reply #513 on: January 15, 2017, 04:00:05 PM »
Looks fantastic Bud!
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline budman

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CB750 K4 Build
« Reply #514 on: January 15, 2017, 05:48:40 PM »
Looks fantastic Bud!

Thanks Steve.  Hopefully I'll be able to take a trip to the Hill Country on it this spring.  I sure hope this won't be another soggy year.
Bud

1973 CB750K3 Chopper
2021 Indian Scout

Offline palepainter

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Re: CB750 K4 Build
« Reply #515 on: January 15, 2017, 06:46:32 PM »
Congrats on just about wrapping the scoot up.  It sure looks sweet and has a look all of it's own.  Looking forward to some video of it hummin along.  :)

Offline budman

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Re: CB750 K4 Build
« Reply #516 on: January 16, 2017, 07:12:39 AM »
Congrats on just about wrapping the scoot up.  It sure looks sweet and has a look all of it's own.  Looking forward to some video of it hummin along.  :)

Thanks, Mike.  I can see the finish line.  Actually I could see the finish line when I began this project 2 1/2 years ago or I wouldn't have started.  At the time I thought it would only take me a year.  I forgot to take into account that I can't leave things stock.
Bud

1973 CB750K3 Chopper
2021 Indian Scout

Offline Stev-o

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Re: CB750 K4 Build
« Reply #517 on: January 16, 2017, 07:18:48 AM »
Congrats on just about wrapping the scoot up.  It sure looks sweet and has a look all of it's own.  Looking forward to some video of it hummin along.  :)

Thanks, Mike.  I can see the finish line.  Actually I could see the finish line when I began this project 2 1/2 years ago or I wouldn't have started.  At the time I thought it would only take me a year.  I forgot to take into account that I can't leave things stock.

Seems when we do these "rebuilds" for a hobby, it takes much longer than anticipated, especially when we have other ridable bikes!
The Park Racer was to be a quick 3 month refresh, said and done it will probably be a year long project.
Would be nice to ride them both in the Hill Country this spring.
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline budman

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Re: CB750 K4 Build
« Reply #518 on: January 16, 2017, 12:40:13 PM »

Seems when we do these "rebuilds" for a hobby, it takes much longer than anticipated, especially when we have other ridable bikes!

Plus we're old.
Bud

1973 CB750K3 Chopper
2021 Indian Scout

Offline budman

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Re: CB750 K4 Build
« Reply #519 on: January 21, 2017, 03:22:19 PM »
I finally made a license plate frame.

Also got the front brake line sorted out.  Piece of cake connecting the Harley style master cylinder to the front caliper with the right adapter.  Just need to ad fluid and bleed.

I ordered the custom throttle cables and the custom clutch cable from Motion Pro this week.  The clutch cable is just basically a short Harley clutch cable.  The throttle cables are Harley on the throttle end and Honda on the carb end.  Spent a lot of time working out the measurements and sent some detailed drawings to Motion Pro.  They said they could make the cables, no problem.  I might have them next week.

I also got my carb rebuild kits and a jet kit this week.  I need to do some homework before I dive in.

The only major parts left to buy are the air box and the fuel petcock.

Just some minor paint and polishing work and some minor assembly left to do.  I hope I can fire it up in about four weeks.




Bud

1973 CB750K3 Chopper
2021 Indian Scout

Offline Stev-o

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Re: CB750 K4 Build
« Reply #520 on: January 22, 2017, 09:22:31 AM »
What kind of carb kits, you buy, Bud? I'm sure you've heard the warning of cheap aftermarket kits.
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline budman

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Re: CB750 K4 Build
« Reply #521 on: January 22, 2017, 11:24:27 AM »
What kind of carb kits, you buy, Bud? I'm sure you've heard the warning of cheap aftermarket kits.

I don't know who makes the kits, but I got them from 4into1.com.  I didn't cheap out.

I also got a jet kit, supposed to be specific to my spec's.
Bud

1973 CB750K3 Chopper
2021 Indian Scout

Offline budman

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Re: CB750 K4 Build
« Reply #522 on: January 28, 2017, 09:10:41 PM »
Tried my hand at zinc plating.  All the small carb parts needed some help.  I derusted everything first with Metal Rescue.  Pretty pleased with the results.

Before.


After.



Bud

1973 CB750K3 Chopper
2021 Indian Scout

Offline MauiK3

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Re: CB750 K4 Build
« Reply #523 on: January 30, 2017, 02:27:06 PM »
Wow, what a great build. I'm more or less an "enhanced stock" kind of guy but this is really great. Did you put together your own zinc kit?
Again, really nice bike.
Steve
1973 CB 750 K3
10/72 build Z1 Kawasaki

Offline budman

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Re: CB750 K4 Build
« Reply #524 on: January 30, 2017, 07:55:54 PM »
Wow, what a great build. I'm more or less an "enhanced stock" kind of guy but this is really great. Did you put together your own zinc kit?
Again, really nice bike.
Steve

Thanks, Steve.  I looked at some zinc plating kits, but they were kind of expensive considering I had everything I needed around the house minus the zinc ingots.  I bought a couple of ingots for $12 off of EBay.  Way more zinc than I needed.  I just cut off a couple of chunks and I'll save the rest for another day.  Pretty simple process.
Bud

1973 CB750K3 Chopper
2021 Indian Scout