Author Topic: CB750 turbo dragbike build  (Read 6220 times)

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Offline 76kcafe

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CB750 turbo dragbike build
« on: August 18, 2014, 07:00:20 PM »
I made a post awhile ago about the turbo bike I was building. After 5 years the bike is finally finished so I thought I would share some pictures with you guys.
« Last Edit: August 18, 2014, 07:03:07 PM by 76kcafe »
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74 CB750 dragbike in progress

Offline 754

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Re: CB750 turbo dragbike build
« Reply #1 on: August 18, 2014, 07:09:27 PM »
Man is that SWEEt.. I love the kawi tail section, struts, and the pipe its what I ran with my webers..
 Dig the Fibremold tank with stock type stripes. Well played..
Maker of the WELDLESS 750 Frame Kit
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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 dragracer

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Re: CB750 turbo dragbike build
« Reply #2 on: August 18, 2014, 07:53:46 PM »
Nice ride

Offline Bill/BentON Racing

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Re: CB750 turbo dragbike build
« Reply #3 on: August 18, 2014, 08:12:54 PM »
Very nice. Now tell us more!  ;D K.
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Over 35 years of experience working on vintage motorcycles, with a speciality in Honda SOHC/4 with a focus on the CB750 and other models as well from 1966 - 1985.
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1993 HRC RS125 | 1984 NS400R | 1974 Honda CB750/836cc (Calendar Girl) | 1972 CB 500/550 Yoshi Kitted 590cc | 1965 Honda CB450 Black Bomber | 1972 Suzuki T350 | 1973 88cc | Z50/Falcons Pit Bike | 1967 CA100| 1974 CB350 (400F motor)...and more.
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Online Jerry Rxman Griffin aka MuthaF'er

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Re: CB750 turbo dragbike build
« Reply #4 on: August 18, 2014, 08:53:58 PM »
Hope it runs as good as it looks!  ;)
As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)

Offline TurboD

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Re: CB750 turbo dragbike build
« Reply #5 on: August 18, 2014, 09:04:40 PM »
Nice job and yes tell us more. Your intentions / goals?

Offline 76kcafe

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Re: CB750 turbo dragbike build
« Reply #6 on: August 19, 2014, 03:34:00 AM »
As of now the bike runs decent, it still needs some tuning. It's an 836 with an ATP turbo kit, 8 psi. All the work/paint was done by my brother, my dad, and I. My goal was to just build a custom looking dragbike. I don't really plan on racing it, just riding it a lot on the street. Thanks for the compliments!
76 CB750 Cafe
74 CB750 dragbike in progress

Offline TurboD

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Re: CB750 turbo dragbike build
« Reply #7 on: August 19, 2014, 05:38:07 AM »
Very cool.

Offline Greg H

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Re: CB750 turbo dragbike build
« Reply #8 on: August 19, 2014, 12:27:12 PM »
That is one great looking bike  8).

Offline PeWe

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Re: CB750 turbo dragbike build
« Reply #9 on: August 19, 2014, 01:23:17 PM »
Really nice build!!
Soon on Youtube? With sound ::) :P
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 76kcafe

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Re: CB750 turbo dragbike build
« Reply #10 on: August 19, 2014, 02:01:11 PM »
I did not make any videos of it yet. Maybe soon.
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74 CB750 dragbike in progress

Offline 754

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Re: CB750 turbo dragbike build
« Reply #11 on: August 19, 2014, 03:03:58 PM »
I cut my sidestand mount off the frame, made a stand that fits in rear peg.
Lowered bike about another 3 inches at rear, and increase rake a bit in the right direction...for hard launches..and drags.
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 BPellerine

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Re: CB750 turbo dragbike build
« Reply #12 on: August 19, 2014, 05:39:15 PM »
wow an old school hotrod that looks stunning and fast!bill
1978 CB 750K ard and webers
another anfob

Offline Jim F

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Re: CB750 turbo dragbike build
« Reply #13 on: August 19, 2014, 05:39:38 PM »
Very nice indeed
2002 RC51 1000 (SP2)
1983 GS1100EC Suzuki
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1992 KTM500 2 stroke
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1978 GS750/840 Suzuki

Offline Jim F

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Re: CB750 turbo dragbike build
« Reply #14 on: August 20, 2014, 05:36:23 AM »
too bad all of us turbo guys couldn't get together for a group picture of our bikes
2002 RC51 1000 (SP2)
1983 GS1100EC Suzuki
2002 998 Dukati (Customers Bike)
1992 KTM500 2 stroke
1975 CB750/836 Honda
1978 GS750/840 Suzuki

Offline 76kcafe

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Re: CB750 turbo dragbike build
« Reply #15 on: August 20, 2014, 05:49:18 PM »
A group picture would be very cool
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74 CB750 dragbike in progress

Offline TurboD

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Re: CB750 turbo dragbike build
« Reply #16 on: August 20, 2014, 05:51:44 PM »
Tell more. Engine work, turbo sizing, carb etc. :)

Offline BLUE71TURBO

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Re: CB750 turbo dragbike build
« Reply #17 on: August 20, 2014, 11:06:12 PM »
 From one turbo guy to another....... GREAT JOB !    ;)
Remember; Before you can be old and wise, you must first be young and stupid !

Offline 76kcafe

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Re: CB750 turbo dragbike build
« Reply #18 on: August 21, 2014, 03:24:49 AM »
It's an 836. Stock crank, cycle x rods, forged JE 8.5:1 compression. Head has oversized valves. Norris turbo cam. The turbo is a B25. Carb is an hsr42. I believe the carb is a little to big for the engine.
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74 CB750 dragbike in progress

Offline andy750

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Re: CB750 turbo dragbike build
« Reply #19 on: August 21, 2014, 03:54:25 AM »
Great job! This bike has to be in BOTM!

cheers
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

Offline MCRider

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Re: CB750 turbo dragbike build
« Reply #20 on: August 21, 2014, 06:40:54 AM »
I made a post awhile ago about the turbo bike I was building. After 5 years the bike is finally finished so I thought I would share some pictures with you guys.

I got you beat on time to completion, but your result is beautiful. Hope it runs great too!   :D
Ride Safe:
Ron
1988 NT650 HawkGT;  1978 CB400 Hawk;  1975 CB750F -Free Bird; 1968 CB77 Super Hawk -Ticker;  Phaedrus 1972 CB750K2- Build Thread
"Sometimes the light's all shining on me, other times I can barely see, lately it appears to me, what a long, strange trip its been."

Offline 76kcafe

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Re: CB750 turbo dragbike build
« Reply #21 on: August 21, 2014, 12:46:33 PM »
Blue71: what carb are you using and how much boost?
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74 CB750 dragbike in progress

Offline BPellerine

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Re: CB750 turbo dragbike build
« Reply #22 on: August 21, 2014, 05:38:23 PM »
did you make the swingarm and how much over is it?bill
1978 CB 750K ard and webers
another anfob

Offline Jim F

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Re: CB750 turbo dragbike build
« Reply #23 on: August 21, 2014, 06:04:47 PM »
wrong topic
just damn
« Last Edit: August 22, 2014, 06:38:42 AM by Jim F »
2002 RC51 1000 (SP2)
1983 GS1100EC Suzuki
2002 998 Dukati (Customers Bike)
1992 KTM500 2 stroke
1975 CB750/836 Honda
1978 GS750/840 Suzuki

Offline 76kcafe

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Re: CB750 turbo dragbike build
« Reply #24 on: August 21, 2014, 06:14:25 PM »
The swing arm is 4" over. Steve carpenter "Carpy" made the swingarm.
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74 CB750 dragbike in progress

Offline Don R

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Re: CB750 turbo dragbike build
« Reply #25 on: August 21, 2014, 10:05:05 PM »
It looks awesome, I'd love to find one of those tanks, the dragbike I'm doing had one but it was lost somewhere along the way before I got the bike.
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Offline BPellerine

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Re: CB750 turbo dragbike build
« Reply #26 on: August 22, 2014, 05:50:44 PM »
thanks for the info.bill
1978 CB 750K ard and webers
another anfob

Offline SOHC Digger

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Re: CB750 turbo dragbike build
« Reply #27 on: August 23, 2014, 05:19:01 PM »
Love this bike! Well done!!!

Offline 76kcafe

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Re: CB750 turbo dragbike build
« Reply #28 on: August 23, 2014, 07:15:54 PM »
Thank you. Hopefully I can get it running a little better. It needs some tuning yet.
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74 CB750 dragbike in progress

Offline Dunk

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Re: CB750 turbo dragbike build
« Reply #29 on: August 25, 2014, 01:12:45 PM »
Sweet bike. I believe I saw this at the two stroke club show in PA a couple weekends ago? There were a few SOHC4s there.

Offline 76kcafe

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Re: CB750 turbo dragbike build
« Reply #30 on: August 25, 2014, 02:51:13 PM »
Yeah I was there at that show.
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74 CB750 dragbike in progress

Offline NitroHunter

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Re: CB750 turbo dragbike build
« Reply #31 on: August 25, 2014, 06:51:21 PM »
I just love the look of Old School Custom Cool. 
Nice job 76!  8)
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Offline jaguar

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Re: CB750 turbo dragbike build
« Reply #32 on: August 29, 2014, 03:33:21 PM »
Very cool bike.  Love the color.
Really makes me want to build a drag bike.  Ive always looked for a race drag frame, missed on a few years ago and really regret it.