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Offline Wbflyer

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Start of my 78 Cb750 project
« on: September 19, 2017, 08:43:53 PM »
Hey all,

Figured I would start a thread on my build.  Hopefully it will be 90% stock but going for a little unique look.  Not cafe or brat but a little of both.  Maybe a scramble wanna be?  Anyway, I have a garage of parts that I am starting to reverse engineer this bike so any help would really be appreciated!
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Offline Stev-o

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Re: Start of my 78 Cb750 project
« Reply #1 on: September 19, 2017, 08:50:49 PM »
I'll follow along.....
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'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline Desert-SOHC

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Re: Start of my 78 Cb750 project
« Reply #2 on: September 19, 2017, 11:02:23 PM »
78's are the fastest..... ;D
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Offline SOHC4 Cafe Racer Fan

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Re: Start of my 78 Cb750 project
« Reply #3 on: September 20, 2017, 12:02:54 PM »
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1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold

Offline Wbflyer

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Re: Start of my 78 Cb750 project
« Reply #4 on: September 20, 2017, 12:09:56 PM »
hahaha, yes as long as you are going down hill.
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Offline BobbyR

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Re: Start of my 78 Cb750 project
« Reply #5 on: September 20, 2017, 01:45:35 PM »
Looks like you have a great start. I aso have a 78K and it does have the best head of the SOHC motors. I will be following your build.
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Dedicated to Sgt. Howard Bruckner 1950 - 1969. KIA LONG KHANH.

But we were boys, and boys will be boys, and so they will. To us, everything was dangerous, but what of that? Had we not been made to live forever?

Offline Jnel

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Re: Start of my 78 Cb750 project
« Reply #6 on: September 21, 2017, 02:23:46 PM »
I have a 78 F.  I'll keep tabs on this project.

Sent from my SAMSUNG-SM-N930A using Tapatalk

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Offline Wbflyer

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Re: Start of my 78 Cb750 project
« Reply #7 on: September 22, 2017, 02:28:14 PM »
Got my new Front progressive suspension and rear Ikon shocks today!  Will post pics tonight.
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Offline Jnel

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Re: Start of my 78 Cb750 project
« Reply #8 on: September 22, 2017, 03:34:29 PM »
Food for thought.

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Offline Jnel

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Re: Start of my 78 Cb750 project
« Reply #9 on: September 22, 2017, 03:37:05 PM »
No emblems, no beed at the bottom

Sent from my SAMSUNG-SM-N930A using Tapatalk

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Offline Wbflyer

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Re: Start of my 78 Cb750 project
« Reply #10 on: September 27, 2017, 12:09:09 PM »
I like that.  where did you get it? Or make it?
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Offline Wbflyer

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Re: Start of my 78 Cb750 project
« Reply #11 on: September 27, 2017, 12:13:24 PM »
shocks
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Offline SOHC4 Cafe Racer Fan

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Re: Start of my 78 Cb750 project
« Reply #12 on: September 27, 2017, 04:41:18 PM »
Quote from: Wbflyer on September 27, 2017, 12:09:09 PM
I like that.  where did you get it? Or make it?

Looks like an F (750 Super Sport) tank with the fuel door cut out and welded shut with a bung and fuel cap replacing the door.
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1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold

Offline 63SSRagtop

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Re: Start of my 78 Cb750 project
« Reply #13 on: September 27, 2017, 05:20:59 PM »
I've seriously been thinking about taking the stock tank and splitting it length wise, lose the pop up tray and replace with a pop up filler neck.. think it would really emphasize the engine some.. curious about that tank as well.. was than on off the shelf tank??
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Offline SOHC4 Cafe Racer Fan

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Re: Start of my 78 Cb750 project
« Reply #14 on: September 28, 2017, 08:52:43 AM »
Quote from: 63SSRagtop on September 27, 2017, 05:20:59 PM
I've seriously been thinking about taking the stock tank and splitting it length wise, lose the pop up tray and replace with a pop up filler neck.. think it would really emphasize the engine some.. curious about that tank as well.. was than on off the shelf tank??

Why would you need to split the tank??  Why can't you cut out the fuel door and existing cap and weld in a new bung with a vented cap?
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1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold

Offline 63SSRagtop

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Re: Start of my 78 Cb750 project
« Reply #15 on: September 28, 2017, 04:56:48 PM »
I want a narrower tank, same profile of course but I would be slicker imo, been looking high and low at different tanks for the chopper but have the CBR front end sitting and waiting to go on the next bike.. that's the one I'd use a narrow tank for..
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Offline SOHC4 Cafe Racer Fan

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Re: Start of my 78 Cb750 project
« Reply #16 on: September 28, 2017, 09:37:23 PM »
Quote from: 63SSRagtop on September 28, 2017, 04:56:48 PM
I want a narrower tank, same profile of course but I would be slicker imo, been looking high and low at different tanks for the chopper but have the CBR front end sitting and waiting to go on the next bike.. that's the one I'd use a narrow tank for..

Got it.  That would be interesting.
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1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold

Offline 754

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Re: Start of my 78 Cb750 project
« Reply #17 on: September 28, 2017, 09:50:32 PM »
Look at my 400 tank on a 750... that makes it a half F.
Save you 13 hours..

I know it's about 1.5 inches narrower than the 69 to 76 K tanks..... the 77 are even wider.
« Last Edit: September 28, 2017, 09:54:16 PM by 754 »
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Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline 754

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Re: Start of my 78 Cb750 project
« Reply #18 on: September 28, 2017, 09:55:23 PM »
Quote from: Jnel on September 22, 2017, 03:37:05 PM
No emblems, no beed at the bottom

Sent from my SAMSUNG-SM-N930A using Tapatalk
How long did cuttingvtge bottom off take ? Was it because of rust ?


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Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline Jnel

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Re: Start of my 78 Cb750 project
« Reply #19 on: September 29, 2017, 05:32:34 AM »
So... the beed is still there.  I built up more metal to match the tank surface.
« Last Edit: September 29, 2017, 05:35:20 AM by Jnel »
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Offline Jnel

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Re: Start of my 78 Cb750 project
« Reply #20 on: September 29, 2017, 09:56:03 AM »
Quote from: Jnel on September 29, 2017, 05:32:34 AM
So... the beed is still there.  I built up more metal to match the tank surface.
I did exactly as you said.  Cut the F door out, replaced with new metal and got a aftermarket cap.  A little body work and done.  The bottom got strips of metal welded on the exhisting beed to build it up to the same level as the tank sides.  I was trying for a cleaner look and to make the bottom of the tank run smooth right into the sest pan and bact thru to the hump. One clean line.

Sent from my SAMSUNG-SM-G935A using Tapatalk

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Offline SOHC4 Cafe Racer Fan

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Re: Start of my 78 Cb750 project
« Reply #21 on: September 29, 2017, 10:00:11 AM »
Quote from: Jnel on September 29, 2017, 09:56:03 AM
Quote from: Jnel on September 29, 2017, 05:32:34 AM
So... the beed is still there.  I built up more metal to match the tank surface.
I did exactly as you said.  Cut the F door out, replaced with new metal and got a aftermarket cap.  A little body work and done.  The bottom got strips of metal welded on the exhisting beed to build it up to the same level as the tank sides.  I was trying for a cleaner look and to make the bottom of the tank run smooth right into the sest pan and bact thru to the hump. One clean line.

Sent from my SAMSUNG-SM-G935A using Tapatalk

Nice!
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1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold

Offline 63SSRagtop

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Re: Start of my 78 Cb750 project
« Reply #22 on: September 29, 2017, 05:47:53 PM »
Quote
Look at my 400 tank on a 750... that makes it a half F.
Save you 13 hours..

that's what I'm talking about!  anything that saves time and looks cool is legit! 

On that note.. anybody repop Honda tanks?? was just looking at the CT90/110 fuel tank as a possible oil tank on the chop lol
« Last Edit: September 29, 2017, 06:13:53 PM by 63SSRagtop »
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Offline 754

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Re: Start of my 78 Cb750 project
« Reply #23 on: September 29, 2017, 07:06:07 PM »
If i could get at my old pics I would show you an XL 350 tank on an Amen rigid, the old Hellsinore bike We had..
 If and when I get an Amen again ,  I will try out my Storz XR alloy tank, and see how that looks..
 Bad partvyhey are pricey .. a G note for a new one.   Man I cant wait to put all my exotic parts on a cool new build..

 Adding a pic of the Storz tank.
« Last Edit: September 29, 2017, 07:17:15 PM by 754 »
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Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline 63SSRagtop

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Re: Start of my 78 Cb750 project
« Reply #24 on: September 29, 2017, 09:17:57 PM »
Yeah, figuring out the right tank for that bike is turning out to be trying.. Do dig the bottom of that 400 tank though.. looks like a decent recessed area for coil packs! going to have to locate one to eyeball it on the frame!
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