Author Topic: Completed 1976 cb750k cafe. 4 into 1 w/ Hindle pipe. VIDEO ADDED!!!  (Read 10114 times)

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Offline shaunzo

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hello all,
finally finished my cafe project: 1976 cb750k.  few specs:  rebuilt motor, 2005 ninja 636 front end, 2009 er6n swingarm.  huge amount of custom fabricated parts by me including, air box, rear set brackets, headlight brackets, oil tank, rear tail section, and all frame mods.  i did my own paint and powdercoating.  12 month process.  i had started a build thread but spent my time updating the buke rather than the thread...lemme know what you think!!












« Last Edit: September 18, 2011, 04:34:29 PM by shaunzo »
2007 kawasaki versys 650 - everyday
2008 xl1200n nightster - somedays
1981 cm400 bobber - somedays
1983 cm450 - nodays (gf's)
1982 kz1000j2 - a project
1976 cb750k - project bike
1971 norton commando 750

Offline sopo400f

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Re: completed 1976 cb750k FINALLY! pics!
« Reply #1 on: September 15, 2011, 05:45:49 PM »
That is crazy wild!
1975 cb400f blue

Offline akinz

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Re: completed 1976 cb750k FINALLY! pics!
« Reply #2 on: September 15, 2011, 06:03:13 PM »
Looks great!! I've always been curious what a modern muffler would sound like on one of these ol girls.....  hint hint  ;)
77 CB550k, Finally completed after 3 long years of a complete teardown and rebuild/modification
77 CB550k, on the backburner to turn into a vintage race bike
79 CBX 1000 an absolute classic I just aquired
2005 Yamaha Raven R6 my street and trackday ride

Offline shaunzo

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Re: completed 1976 cb750k FINALLY! pics!
« Reply #3 on: September 15, 2011, 06:13:58 PM »
i will post a vid of it as soon as i can.  the bike sounds great, not obnoxious!
2007 kawasaki versys 650 - everyday
2008 xl1200n nightster - somedays
1981 cm400 bobber - somedays
1983 cm450 - nodays (gf's)
1982 kz1000j2 - a project
1976 cb750k - project bike
1971 norton commando 750

Offline theofam

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Re: completed 1976 cb750k FINALLY! pics!
« Reply #4 on: September 15, 2011, 06:53:47 PM »
One word - INSANE!  I love the air box & filter, and your drilled headlight mounts tie in very nicely with the rotors!  Dig the use of the white, too. I could go on, but I don't want you getting a big head.  ;D

Very nice job.

Offline CycleRanger

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Re: completed 1976 cb750k FINALLY! pics!
« Reply #5 on: September 15, 2011, 09:38:27 PM »
Dayam! :o

Very cool.
You think rain might cause a problem with that intake?
Do you have a copy of the Honda Shop Manual or Parts List for your bike? Get one here:
https://www.honda4fun.com/materiale/documentazione-tecnica
CB750K5        '79 XL250s     CL350K3
CB750K3        '76 XS650      '76 CJ360T

Offline MrGardman

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Re: completed 1976 cb750k FINALLY! pics!
« Reply #6 on: September 16, 2011, 05:26:02 AM »
Wow...looks great. I really like the small details on the bike. I do like the fresh air system that you made up. Shows a lot of thought went into this bike.

Offline andy750

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Re: completed 1976 cb750k FINALLY! pics!
« Reply #7 on: September 16, 2011, 05:29:36 AM »
Very well done and very creative! Where did the oil tank go? Under the seat? I like the front end. How does it ride? Would love to see a video of it on the road.

Very cool!
Andy
Current bikes
1. CB750K4: Long distance bike, 17 countries and counting...2001 - Trans-USA-Mexico, 2003 - European Tour, 2004 - SOHC Easy Rider Trip , 2008 - Adirondack Tour 2-up , 2013 - Tail of the Dragon Tour , 2017: 836 kit install and bottom end rebuild. And rebirth: http://forums.sohc4.net/index.php/topic,173213.msg2029836.html#msg2029836
2. CB750/810cc K2  - road racer with JMR worked head 71 hp
3. Yamaha Tenere T700 2022

Where did you go on your bike today? - http://forums.sohc4.net/index.php?topic=45183.2350

mrjack55

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Re: completed 1976 cb750k FINALLY! pics!
« Reply #8 on: September 16, 2011, 05:54:31 AM »
Holy crap!  That is one of the coolest things I've seen in a long time.  What a project that must have been.
You really put together a killer bike. 

I'm thinking of building a streetfighter out of my K7 750.  I hope you don't mind me asking you a bunch of questions as I go along. 

Again, great job. 

Offline ekpent

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Re: completed 1976 cb750k FINALLY! pics!
« Reply #9 on: September 16, 2011, 06:04:29 AM »
Very nice,creative and unique-def not a copycat-your quality and fab skills are Great.What else are you working on ?

Offline lucky

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Re: completed 1976 cb750k FINALLY! pics!
« Reply #10 on: September 16, 2011, 07:11:31 AM »
Nice job on the bike. I like it all except for that big garbage can exhaust. Just a generational thing I guess.

Offline 65Ch3v3LL3

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Re: completed 1976 cb750k FINALLY! pics!
« Reply #11 on: September 16, 2011, 07:48:43 AM »
Sweet build. How does it ride and handle with the modern suspension?
1979 CB650
2011 Harley Road King
2008 Harley V-Rod VRSC DX
2012 Sierra Denali 2500HD
1965 Chevelle Malibu SS
1922 Ford T-Model

Online 70CB750

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Re: completed 1976 cb750k FINALLY! pics!
« Reply #12 on: September 16, 2011, 11:52:51 AM »
This is pure CB porn man!    BOTM maybe?

- The air filter is way cool
- White on the block?  Is it baked ceramo or something?
- Shield is retrofit?
- R6 controls I presume?
- Any detail pictures on the airbox?  How does it hold to carbs?  Any more pix from the build up?

Overall quite a gem you got there!

Offline akinz

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Re: completed 1976 cb750k FINALLY! pics!
« Reply #13 on: September 16, 2011, 12:38:59 PM »
i will post a vid of it as soon as i can.  the bike sounds great, not obnoxious!
no such thing as being too loud with these bikes :D
77 CB550k, Finally completed after 3 long years of a complete teardown and rebuild/modification
77 CB550k, on the backburner to turn into a vintage race bike
79 CBX 1000 an absolute classic I just aquired
2005 Yamaha Raven R6 my street and trackday ride

Offline shaunzo

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Re: completed 1976 cb750k FINALLY! pics!
« Reply #14 on: September 16, 2011, 02:08:05 PM »
WOW so many kind words!  thanks you soooo much. 

i am going to attempt to respond to everyone; since i'm not so busy building i guess i have time to do that much!

Looks great!! I've always been curious what a modern muffler would sound like on one of these ol girls.....  hint hint  ;)

Thanks!  the exhaust sound great at high revs and you can still hear the actual engine running while its idling.  i will certainly post a vid of it running as soon as i get some decent weather to take it out again.

One word - INSANE!  I love the air box & filter, and your drilled headlight mounts tie in very nicely with the rotors!  Dig the use of the white, too. I could go on, but I don't want you getting a big head.  ;D

Very nice job.

i didnt see the connection between the rotors and drilled mounts to be honest with you but from now on i will say i tried it!  haha.  as for the colours...i wanted a functional look...bare bones, and nothing says that like the colour white and metallics.  i stuck with polished aluminum, aluminum powdercoat, silver, and white.  and to tie it all together i added a pearl to the clear coat.  it looks really nice in the sun as the frame tank panels shine!

Dayam! :o

Very cool.
You think rain might cause a problem with that intake?

hmmmm.  prolly!  i built it to ride but it is a possibility that rain could soak the filter and eventually suck into the intake.  perhaps a prefilter would be in order.

Wow...looks great. I really like the small details on the bike. I do like the fresh air system that you made up. Shows a lot of thought went into this bike.

many many hours spent day dreaming before i even started the build.  i wanted to capture something different with this bike so i decided that i would go "over the top" with a few details.  the intake was one of them.  i wanted it to look cool, be functional, and match.  it matches the angle of the pipe and the frame support.  the colour matches the spring, pinstripe, and seat stitching.  i am surprised that people even like it being so "big"!

Very well done and very creative! Where did the oil tank go? Under the seat? I like the front end. How does it ride? Would love to see a video of it on the road.

Very cool!
Andy

the oil tank moved to the left and sits under the tail.  i have a pic of it below.  the suspension on this thing is unbelievable!  it is stiff but absorbs every little bump with ease.  i am so happy with it that it is hard to express.  i can only compare it to a modern bike.  i will record a video of it this weekend running so you all can see it and hear it working.

Holy crap!  That is one of the coolest things I've seen in a long time.  What a project that must have been.
You really put together a killer bike. 

I'm thinking of building a streetfighter out of my K7 750.  I hope you don't mind me asking you a bunch of questions as I go along. 

Again, great job. 

thank you so much!  always wanted a kz750 and that was the bike i wanted to do this project but thankfully i found this one for a good price.  ask as many q's as you want.  i would be more than happy to help out.  i am a huge kawi fan and ride a versys 650 as my daily commute.

Very nice,creative and unique-def not a copycat-your quality and fab skills are Great.What else are you working on ?

thanks for saying that!  just imaging what i would build if i had a milling machine!!!  i have a 1971 norton commando in the queue but im considering selling it to get another cb750.  the bikes are brilliant, easy to work on, find, cheap, powerful, and the resources are insane.  this site for example.  everyone hear is always so happy to help out!  besides, i may own the norton now, but i dont have the tools to do a damn thing on it which means a huge expense just to dismantle it.  yikes!

Nice job on the bike. I like it all except for that big garbage can exhaust. Just a generational thing I guess.

obviously i like the pipe, but what do you suggest?  i toyed with the idea of a 4 into 4, and a 4 into 2, but i settled on the 4 into 1 into a muffler that actually muffled rather than annoy the #$%* outta me. 

Sweet build. How does it ride and handle with the modern suspension?


the handling is insane!  very comfortable even with that thin seat.  it doesnt dive under heavy braking and the turning is solid.  i am so pleased with it considering i kinda 'winged" it with the mods to rake and trail.

This is pure CB porn man!    BOTM maybe?

- The air filter is way cool
- White on the block?  Is it baked ceramo or something?
- Shield is retrofit?
- R6 controls I presume?
- Any detail pictures on the airbox?  How does it hold to carbs?  Any more pix from the build up?

Overall quite a gem you got there!

cb porn eh?  thanks a lot, cause thats how i feel when i scroll through everyones builds on here.    i tried to document every detail of the build and will post a few pics below to show you all some steps (including the air box).  the box is made from 3" aluminum square tubing.  capped the sides, drilled holes to accomodate the 4 original box to carb flanges.  the cones/stacks extend inside the box. i didnt cut them off.  sheild?  or fairing?  its a piece i found in an old bike shop.  i wanted a 'mad max" kinda a deal and it set me back a whole 25 bucks brand new!  painted it and woohoo!  the controls are off of a 2009 er6n 650, the rear sets are from a 'busa, front end from a 2005 ninja 636, rear end from an er6n 650 as well. 

like i said, i have a lot of pics of the build so if you wanna see anything in particular i will post them. 

as for BOTM...i guess we will see what happens. 

heres some more pics:
this is the bike as it appeared in the classified.  i paid 400 bucks and took me about 15 minutes to get running.  very rough! 


the frame before paint.  all the gussetts welded in, new supports, rear shock mount, rear set mounts, and general reinforcements to the front to stiffen it up for the big front end.


frame after paint.  shot a white, then clear, then clear with pear, and a final clear. 


the engine after powdercoating but before reassembly.  high heat white on the cylinders, gloss white on chrome covers, ultimate chrome on the aluminum side covers.  the cases are done in a high temp muffler silver.  eventually the motor got all gaskets and seals, rings, primary chain and tensioner, cam chain, guide and tensioner, clutch.  it was in really good shape but those had to be done in my opinion.


the oil tank before polish.  it sits under the tail on the left side,  hold almost 3.5 litres, fabricated from 3" aluminum square tubing welded together.  the fill sits under the tail section. 



front stems from the cb and the 2005 ninja.  i got the stem milled to match the cb and so it took the original cb750 bearings.  bolted right into place.  very easily.  i had no idea this would work but it did.  i took a shot in the dark when i ordered it all off of ebay.  i won!


the airbox.  3" square aluminum tubing.



air box in place held by the motor mount/ignition switch bracket.  that rear motor mount is one of my favourite pieces on the bike! 


well that was a post!  thanks for the interest guys!  if you wanna know anything about this bike please ask!
2007 kawasaki versys 650 - everyday
2008 xl1200n nightster - somedays
1981 cm400 bobber - somedays
1983 cm450 - nodays (gf's)
1982 kz1000j2 - a project
1976 cb750k - project bike
1971 norton commando 750

Offline babyfood1217

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Re: completed 1976 cb750k FINALLY! MORE PICS!!!
« Reply #15 on: September 16, 2011, 10:05:16 PM »
I'm curious about the swingarm adaptation.  Perhaps any and all pics :) of that area and some dimensions of the rear wheel?  I imagine it's rather meaty, and I'm curious how you compensated.  Offset sprockets?  Extended sprocket shaft?  grinding down to the swingarm?


Nice build, looks well put together.
I need help moving my project bike from Wisconsin to Seattle, WA.  Willing to pay well.  Contact if interested.

SOHC member: #438

Project: 1976 CB750K
GSXR forks, Monoshock Rear end, 836 in progress, RC51 pipes, custom frame and everything else.

Offline brandEn

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Re: completed 1976 cb750k FINALLY! MORE PICS!!!
« Reply #16 on: September 16, 2011, 10:16:54 PM »
#$%*IN!

Offline shaunzo

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Re: completed 1976 cb750k FINALLY! MORE PICS!!!
« Reply #17 on: September 16, 2011, 10:43:10 PM »
I'm curious about the swingarm adaptation.  Perhaps any and all pics :) of that area and some dimensions of the rear wheel?  I imagine it's rather meaty, and I'm curious how you compensated.  Offset sprockets?  Extended sprocket shaft?  grinding down to the swingarm?


Nice build, looks well put together.

thanks!!!

the adaptation was easy...very easy.  i documented the whole thing with pics.  when im less drunk tomorrow i will explain the whole thing....promise.
2007 kawasaki versys 650 - everyday
2008 xl1200n nightster - somedays
1981 cm400 bobber - somedays
1983 cm450 - nodays (gf's)
1982 kz1000j2 - a project
1976 cb750k - project bike
1971 norton commando 750

Online 70CB750

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Re: completed 1976 cb750k FINALLY! MORE PICS!!!
« Reply #18 on: September 17, 2011, 05:05:57 AM »
Thank you!  Using square tubing is pretty ingenious  :) 

I have this gut feeling, that I really want to add Al welding option to my Lincoln welder for this project, steel just does not cut it for many parts.

Offline GRock

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Re: completed 1976 cb750k FINALLY! MORE PICS!!!
« Reply #19 on: September 17, 2011, 08:03:52 AM »
WOW!!! NICE WORK!!! It would have taken me a minute to realise that it was CB750 if I saw it on the street. I'm envious of your fabrication skills!! How did you come across all the late modle parts? It would get BOTM vote from me! Congrats on a fine job!

Offline shaunzo

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Re: completed 1976 cb750k SWINGARM PICS
« Reply #20 on: September 17, 2011, 08:56:06 AM »
I'm curious about the swingarm adaptation.  Perhaps any and all pics :) of that area and some dimensions of the rear wheel?  I imagine it's rather meaty, and I'm curious how you compensated.  Offset sprockets?  Extended sprocket shaft?  grinding down to the swingarm?


Nice build, looks well put together.

basically, found a complete rear end off of a 2009 er6n including all swingarm components, wheel 160/60-17, caliper, shock.  this swingarm is really beefy and has a side-mounted shock. cost for everything including the both controls and a signal flasher and some other stuff was only 650 bucks.  i widenened the frame and stuck her in!

the details:
beefy swingarm


i cut out the crossmember containing the center stand


widened the frame with a car jack.  about 13-14mm, engine still mounted. 


stuck the swingarm in.


welded in a new crossmember


had a sleeve made to go through the swingarm so that i could use the original cb swingarm bolt and frame support bungs.  of course this played on my mind a lot!  i came to the conclusion that this wasnt the right way to do this and figured it would be a definite weak point that would eventually kill me so i changed the setup.



i cut out the original swingarm bolt bungs



made up some new beefier ones to accept the er6n 20mm thick axle bolt which was a huge difference over the stock setup.  this i felt comfortable with.




had them welded in (i do not do my own welding.  i have an awesome welder and am eventually gonna learn how but refuse to learn on something that i am gonna ride.  i do not wanna find out while traveling 120km/h that i am a #$%*t welder.


now, the chain, tire, sprocket spacing.  the difference ended up being very slight.  i switched to the er6n 520 chain which gave me a few millimeters and used a 10mm offset sprocket to give me the rest.  i have perfect clearance between the tire and the chain.  hige important note!!!!!!:  i couldnt find an offset sprocket anywhere in a 520 that would fit the cb750 output shaft.  i had a guy in florida make me one and send it out.  he was helpful and convinced me to go with an 18t 10mm offset sprocket in the 520 i wanted.  he ended up sending me a 10mm offset in a 530.  he was an #$%* to deal with after that and i ended learning the the only difference between the 520 and 530 was the thickness of the sprocket.  i had it thinned out at a machine shop and voila! a perfect sprocket.  now the big deal here is that 10mm offset sprockets in a 530 for the cb750 output shaft is readily available everywhere online and are reasonably priced.  all you need to do is thin it out to accept the 520 chain.  thats it!  no big deal.  i dont have any pics of the sprocket because i was waiting on it for a month and pushed this project back big time.  once i got it i installed it immediately. i will see about getting a few this winter if anyone is interested.



again, if anyone wants to know any specifics on this build just ask.  i will try my best to do the same kinda replay as this one.  fairly easy to do now that the bike is complete.  i feel like i owe the site some of this too because i skeeted out on the build thread i started.

shaun.
2007 kawasaki versys 650 - everyday
2008 xl1200n nightster - somedays
1981 cm400 bobber - somedays
1983 cm450 - nodays (gf's)
1982 kz1000j2 - a project
1976 cb750k - project bike
1971 norton commando 750

Offline babyfood1217

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Re: Completed 1976 cb750k cafe. SIDE-MOUNTED MONOSHOCK details/build info
« Reply #21 on: September 17, 2011, 09:47:35 AM »
very interesting!  I stumbled across a website (perhaps your welders?  maybe yours? ride the rock or something like that) that had a few more pictures.  Looks very well put together.  I'm anxious to hear how the handling is affected by the longer swingarm and subsequent longer wheelbase.  Do you have measurements of those? 
I need help moving my project bike from Wisconsin to Seattle, WA.  Willing to pay well.  Contact if interested.

SOHC member: #438

Project: 1976 CB750K
GSXR forks, Monoshock Rear end, 836 in progress, RC51 pipes, custom frame and everything else.

Offline shaunzo

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Re: Completed 1976 cb750k cafe. SIDE-MOUNTED MONOSHOCK details/build info
« Reply #22 on: September 17, 2011, 11:23:12 AM »
just measured axle to axle:  59".  i have no idea what the stock measurement is.  anyone know?
2007 kawasaki versys 650 - everyday
2008 xl1200n nightster - somedays
1981 cm400 bobber - somedays
1983 cm450 - nodays (gf's)
1982 kz1000j2 - a project
1976 cb750k - project bike
1971 norton commando 750

Offline MorePDX

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Re: Completed 1976 cb750k cafe. SIDE-MOUNTED MONOSHOCK details/build info
« Reply #23 on: September 17, 2011, 10:34:04 PM »
Shaunzo, thanks for taking the time to share your work!  I love it when people just go in their own direction and end up with something completely unique.  Your bike absolutely falls into that category, creative and cool.  Nice job!
If it ain't broke, don't fix it!  -my dad

mrjack55

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Re: Completed 1976 cb750k cafe. SIDE-MOUNTED MONOSHOCK details/build info
« Reply #24 on: September 18, 2011, 07:37:00 AM »
Quote
thank you so much!  always wanted a kz750 and that was the bike i wanted to do this project but thankfully i found this one for a good price.  ask as many q's as you want.  i would be more than happy to help out.  i am a huge kawi fan and ride a versys 650 as my daily commute.
Quote

Sorry for the confusion, but I do have a 1977 Honda CB750.  I called it a K7 750 to shorten all that up. 
I do love me a Kawasaki as well.  Those things are rocketships.  I almost got a KZ 750 first, but it was sold before I called.  So, I got the 77' CB 750 instead.  Thanks for adding more pictures.  This is going to be a big help.