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Author Topic: Black Jack 1978 K8 750cc  (Read 19937 times)

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Offline Familyvan

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Black Jack 1978 K8 750cc
« on: March 31, 2012, 04:44:33 PM »
Well ive been monitoring this forum for a while and slowly progressing with my own project, so its now my time to update you all

I bought a 1978 750CC K8 honda off Ebay from a bloke in scotland.

The bike was described as a runner, but had been stored for approximatly 3yrs

The bike started but was very rough and lumpy.









Shorten the rear fender and fitted a LED rear light







New front Wheel 2.10with a Cb550 hub, powder coated black and annodised wheels and stainless steel spokes



New 8" headlight with bullet indicators



Im liking this design to be on the tank

Hence the bikes name of "Black Jack" thinking of using a Gun metal Grey in there too
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Offline LesterPiglet

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Re: Black Jack 1978 K8 750cc
« Reply #1 on: March 31, 2012, 05:52:58 PM »
What is it with the gigantic seats or is it a trick of the light?   :o
I hate our gigantic number plates as well.

I'll look forward to updates.
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'Then' and 'than' are completely different words and have completely different meanings. Same with 'of' and 'have'. Set and sit. There, their and they're. Draw and drawer. Could care less/couldn't care less. Bought/brought FFS.


Les Ross.            Certified by a Professional

Offline Familyvan

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Re: Black Jack 1978 K8 750cc
« Reply #2 on: April 01, 2012, 01:35:59 AM »
The seat is gone, and so has the number plate. lol

Going to make a custom seat, more picturesto follow
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Offline Mugen_Stumpo

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Re: Black Jack 1978 K8 750cc
« Reply #3 on: April 01, 2012, 05:21:30 AM »
the first shocks abs are marzocchi repainted???... willing to sell?
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Offline Familyvan

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Re: Black Jack 1978 K8 750cc
« Reply #4 on: April 01, 2012, 01:07:01 PM »


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Offline KB02

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Re: Black Jack 1978 K8 750cc
« Reply #5 on: April 01, 2012, 01:22:35 PM »
You will be so happy that you did that. 8)
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1978 CB750K Project
2000 Ducati ST2
...and a pedal bike

Join the AMA today!!

My project thread Part I: K8 Project "Parts Bike"
My project thread Part II: Finishing (yeah, right) touches on Project "Parts Bike"

Offline LesterPiglet

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Re: Black Jack 1978 K8 750cc
« Reply #6 on: April 01, 2012, 02:02:06 PM »
Get some goggles on.  8)
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'Then' and 'than' are completely different words and have completely different meanings. Same with 'of' and 'have'. Set and sit. There, their and they're. Draw and drawer. Could care less/couldn't care less. Bought/brought FFS.


Les Ross.            Certified by a Professional

Offline lucky

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Re: Black Jack 1978 K8 750cc
« Reply #7 on: April 03, 2012, 11:20:33 AM »
Yes ...get those goggles on bro!!
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Offline Familyvan

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Re: Black Jack 1978 K8 750cc
« Reply #8 on: April 06, 2012, 05:38:41 AM »
First of all that's not me!! I've got less hair. I will have a word!!

Have been arranging the electronics on the battery box



also I have acquired a F1 tank, so slightly slimmer looking

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Offline Familyvan

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Re: Black Jack 1978 K8 750cc
« Reply #9 on: April 06, 2012, 08:09:34 AM »
When we split the engine, the pistons were sloppy in the barrels

After looking around I decided tofit a set of 836cc big bore kit.

We ported and polished the hea a little and fitted a slighty faster cam.
I'll get the exact spec to follow.
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Offline Familyvan

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Re: Black Jack 1978 K8 750cc
« Reply #10 on: April 06, 2012, 08:12:27 AM »
Cx2 cam.
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Offline lucky

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Re: Black Jack 1978 K8 750cc
« Reply #11 on: April 07, 2012, 08:03:17 PM »
Quote from: Familyvan on April 06, 2012, 08:12:27 AM
Cx2 cam.

If you put the words CB750 with Cx2cam THEN GOOGLE THAT you get Ebay>Cycle-x! 41A cam.
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Offline Familyvan

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Re: Black Jack 1978 K8 750cc
« Reply #12 on: June 07, 2012, 12:49:00 PM »






Honda VFR 800 discs
Harley front fender
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Offline Familyvan

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Re: Black Jack 1978 K8 750cc
« Reply #13 on: August 03, 2012, 12:19:19 PM »
Engine stripped down to clean and a hole found in gearbox casing.



Popped down to my mates garage to weld up the hole



All glued up

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Offline Familyvan

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Re: Black Jack 1978 K8 750cc
« Reply #14 on: August 03, 2012, 12:20:20 PM »
My assistant over keen to help out!!



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Offline Familyvan

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Re: Black Jack 1978 K8 750cc
« Reply #15 on: August 03, 2012, 12:21:58 PM »


Cleaned and ready to go!

Engine case painted inside and out

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Offline Familyvan

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Re: Black Jack 1978 K8 750cc
« Reply #16 on: August 03, 2012, 12:23:33 PM »
F1 side panels fitted



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Offline xnoahx

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Re: Black Jack 1978 K8 750cc
« Reply #17 on: August 03, 2012, 06:00:46 PM »
Looks good
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Offline lucky

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Re: Black Jack 1978 K8 750cc
« Reply #18 on: August 06, 2012, 10:13:50 AM »
Quote from: Familyvan on August 03, 2012, 12:19:19 PM
Engine stripped down to clean and a hole found in gearbox casing.



Popped down to my mates garage to weld up the hole



All glued up



When you see that red or blue RTV expect trouble. It is the sign of a real amateur.
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Offline lucky

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Re: Black Jack 1978 K8 750cc
« Reply #19 on: August 06, 2012, 10:18:05 AM »
If I was welding that case I would have wanted it spotless before welding.
 It seemed very dirty to be welding on it.

 Did both sides if the crack or hole get welded?
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Offline Familyvan

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Re: Black Jack 1978 K8 750cc
« Reply #20 on: August 06, 2012, 12:30:26 PM »
Both sides welded up, cleaned and painted   

Just starting to put it all back together now. 
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Offline bytio

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Black Jack 1978 K8 750cc
« Reply #21 on: August 06, 2012, 01:52:23 PM »
What is the red paint used on the inside of the cases?
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Offline Familyvan

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Re: Black Jack 1978 K8 750cc
« Reply #22 on: August 07, 2012, 01:50:22 AM »
Glyptal engine paint
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Offline madmtnmotors

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Re: Black Jack 1978 K8 750cc
« Reply #23 on: August 07, 2012, 07:30:58 AM »
Quote from: Familyvan on August 03, 2012, 12:21:58 PM


Cleaned and ready to go!

You know you're clocks are switched? Might not be an issue unless you're going to use the stock dash light panel, then the trip odometer reset knob may interfere.

Looking good so far!  8)
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TAMTF...


Wilbur



Projects:
"Evolution": http://forums.sohc4.net/index.php?topic=100352.0
"P.O. Debacle": http://forums.sohc4.net/index.php/topic,126692.msg1441661.html#msg1441661
F2/F3 O-rings: http://forums.sohc4.net/index.php?topic=113672.msg1300721#msg1300721
Cam Tower Studs: https://www.mcmaster.com/#93210a017/=t19sgp
Clean up that nasty harness: http://forums.sohc4.net/index.php?topic=137351.msg1549191#msg1549191
http://forums.sohc4.net/index.php/topic,148188.msg1688494.html#msg1688494
http://forums.sohc4.net/index.php/topic,139544.msg1579364.html#msg1579364
                                          
Charging system diagnosis: http://forums.sohc4.net/index.php?topic=1012.msg8345#msg8345
Get the manuals: http://manuals.sohc4.net/cb750k/
The Dragon: http://forums.sohc4.net/index.php?topic=45183.msg1571675#msg1571675
Headlight Switch: http://forums.sohc4.net/index.php?topic=113986.msg1283236#msg1283236
Branden's leak free top end thread: http://forums.sohc4.net/index.php?topic=107040.0
Engine Lifting Made Easy: http://forums.sohc4.net/index.php/topic,58210.msg1684742.html#msg1684742
                                      http://forums.sohc4.net/index.php/topic,100352.msg1675840.html#msg1675840
Static and Dynamic Timing: http://www.hondachopper.com/garage/carb_info/timing/timing1.html
Airbox Gasket Replacement: http://forums.sohc4.net/index.php/topic,114485.msg1290000.html#msg1290000
"Café" : http://forums.sohc4.net/index.php/topic,84697.msg953814.html#msg953814
PD Carb Choke Linkage: http://forums.sohc4.net/index.php/topic,100352.msg1669248.html#msg1669248
                                    http://forums.sohc4.net/index.php/topic,110931.msg1248354.html#msg1248354
                                    http://forums.sohc4.net/index.php/topic,48858.msg515204.html#msg515204
Follow up on your damn posts: http://forums.sohc4.net/index.php/topic,144305.msg1791605.html#msg1791605
Taiwanese Cam Chain Tensioners:  http://forums.sohc4.net/index.php/topic,155043.msg1774841.html#msg1774841
Gumtwo Seat Cover: http://forums.sohc4.net/index.php/topic,164440.msg1897366.html#msg1897366
Primary Drive: http://forums.sohc4.net/index.php/topic,166063.msg1919278.html#msg1919278
Tank Latch: http://forums.sohc4.net/index.php/topic,165975.msg1919495.html#msg1919495
Shorten your forks: http://vintage-and-classic-honda-s.456789.n3.nabble.com/How-to-shorten-forks-td4042465.html DO NOT CUT THE SPRINGS!
Clutch How To: http://vintage-and-classic-honda-s.456789.n3.nabble.com/How-to-change-and-adjust-a-clutch-SOHC-td4040391.html
Late model K7/K8/F2/F3 front sprocket cover removal: http://forums.sohc4.net/index.php/topic,178428.msg2072279.html#msg2072279
630 to 530 conversion: http://forums.sohc4.net/index.php/topic,180710.msg2094423.html#msg2094423

Sent from my Tandy TRS-80!

Offline LesterPiglet

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Re: Black Jack 1978 K8 750cc
« Reply #24 on: August 07, 2012, 12:06:59 PM »
Nice clocks. Is that the F3 paint job on that tank?
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'Then' and 'than' are completely different words and have completely different meanings. Same with 'of' and 'have'. Set and sit. There, their and they're. Draw and drawer. Could care less/couldn't care less. Bought/brought FFS.


Les Ross.            Certified by a Professional
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