Author Topic: Hey 750....the 1975 8 cylinder supercharged CB1500cc Honda is running!!!  (Read 5855 times)

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Offline 23tbucket

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Took a year to build. Just started the engine for the very first time yesterday. No major issues. Just lots of tuning to do. That is a BMW transmision in case you were wondering. I don't know what kind of a vehicle the engine will sit in once I get the tweeking done? We have stupid laws in Canada. I would like to see it in something like the old Morgan, but might not be legal to do?
Anyway, I thought some of you gearheads might enjoy the video:
https://www.youtube.com/watch?v=hUXz68etBIc

Offline zekd

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Damn!!!! nice work  8)

Offline CrankyOldGuy

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Wow!!! and Baileys to top it off   ::)
750 K1 Original Owner

Offline chewbacca5000

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I think it moved!  Great job. Now what are you going to do with it?

Offline Schnell

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Awesome!!!
A good traveller has no fixed plans and is not intent on arriving. --Lao Tsu

primary: 1974 Honda CB750
long term, now resting: 1981 BMW R100/7
project: 1971 Honda CL350
project: 1974 Honda CB450

previous:
1975 Honda CB750
1973 BMW R90/6
1981 Suzuki GS650
1973 Honda CD175

My little website: http://frankfoto.jimdo.com/

Offline Tews19

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Damn. That is nutz!
1969 Honda CB750... Basket case
1970 Honda CB750 survivor.

Offline FuZZie

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Very very cool! What about a stern drive vs the bmw box?

Offline bwaller

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Talented work.

Offline Stev-o

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Awesome. Put in in a T Bucket?
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline scunny

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nice
past-cb100,ts250,cb500,cb500,gs1000,gs650g.phillips traveller
present-CB 650 retro
            VTR1000F3
           XL250S riverbed rocket
           TS250[sold]
           TS185[sold]
           XL125S[sold]
           MT50 (white)
           MT50 (red)[sold]
           KN250/XS400 project
           XR/XL250 bitsa under construction
           SL100[sold]
           XL250R
           pedal(pub bike) leaks oil
my gallery http://gallery.sohc4.net/members/personal/scunny

Offline KRONUS0100

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omg.  i so wanna figure out how to put that into my 76 F1.  wow
MATT
current bikes:  1976 CB750F, 1981 GS1100E
bikes owned:1981 GL1100I, 1990 GS500E, 1981 GS850, 1977 and 1979 GS750, 1974 CB750, 1975 CB750, and a 1982 GS750E

Offline ekpent

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I hereby nominate you as our forums resident "Mad Scientist"   :)   Great work on that beast and Thanks for sharing.

Offline 70CB750

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Holy crap!
Prokop
_______________
Pure Gas - find ethanol free gas station near you

I love it when parts come together.

Dorothy - my CB750
CB750K3F - The Red
Sidecar


CB900C

2006 KLR650

Offline PeWe

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The wonderful looking engine must be visible. It should fit a Trike very well.
Some inspiration...
http://flickrhivemind.net/User/custom%20trike/Interesting
CB750 K6-76  970cc (Earlier 1005cc JMR Billet block on the shelf waiting for a comeback)
CB750 K2-75 Parts assembled to a stock K2

Updates of the CB750 K6 -1976
http://forums.sohc4.net/index.php/topic,180468.msg2092136.html#msg2092136
The billet block build thread
http://forums.sohc4.net/index.php/topic,49438.msg1863571.html#msg1863571
CB750 K2 -1975  build thread
http://forums.sohc4.net/index.php/topic,168243.msg1948381.html#msg1948381
K2 engine build thread. For a complete CB750 -75
http://forums.sohc4.net/index.php/topic,180088.msg2088008.html#msg2088008
Carb jetting, a long story Mikuni TMR32
http://forums.sohc4.net/index.php/topic,179479.msg2104967.html#msg2104967

Offline Lostboy Steve

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That is so sexy. I'm forwarding this to the kneeslider.
1968 Honda Z50
1977 Honda CB550K
2018 Indian Scout

Offline 754

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Very well done Cliff.. Would be killer in a trike.. Got the perfect rear end for it Beemer even..
 A suggestion FWIW... Smoothed off chrome valve covers...

I nominate this...Motor Of the Year..
« Last Edit: April 10, 2014, 08:28:27 AM by 754 »
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 MarkCR750

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Men in sheds!, a tradition that should never die, terrific.

Offline 750K

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What a beast! Sounds awesome.
77 Cb750, 78 Kz1000

Offline lwahples

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Sweet to see it running. Worth the wait!

Offline Deltarider

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Impressive but... how about the cooling of the rear cylinders?
CB500K2-ED Excel black
"There's enough for everyone's need, not enough for anyone's greed." Mahatma Ghandi

Offline Retro Rocket

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Awesome Clifford.... ;)
750 K2 1000cc
750 F1 970cc
750 Bitsa 900cc
If You can't fix it with a hammer, You've got an electrical problem.

Offline Bailgang

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Impressive but... how about the cooling of the rear cylinders?

+1

Any craftsman that's willing to take on a project like that gets a thumbs up from me but I'm wondering about cooling the rear cyls as well so it will be interesting how this engine evolves. I still think it's impressive though.
Scott


71 cb350 twin
77 cb750 F2
83 gl1100 Interstate

Offline SOHC4 Cafe Racer Fan

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Freakin' sick. Wow, what an amazing job.
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 Gearheadgreg

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Wow what a nice piece of engineering ! 
2001 Honda Supercharged Valkyrie   <iframe width="480" height="360" src="http://s1218.photobucket.com/user/meloafer/embed/slideshow/"></iframe> Just having some fun

Offline 23tbucket

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Thank you all for the nice complements and suggestions;

I build a little hot rod a few years ago.
 I built a trike last year.
I think this engine would look good in a replica Morgan three wheeler. I could have an electric fan at the back of the engine, pulling air through the cowl and exiting to the sides of the body. I have a huge oil cooler with a separate electric pump controlled by a thermostat to help cool things down if needed.