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Author Topic: "I will git 'er done, eventually" 750K8 project  (Read 6294 times)

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Offline JoeCooley

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Re: The "I will git 'er done" build of a 750K8
« Reply #25 on: March 30, 2017, 08:00:09 AM »
I always assume the worst. Some guys don't even know what All Balls is.
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Joe in San Diego - Quick Cyles
78 CB750K 836cc Highway Racer - http://forums.sohc4.net/index.php/topic,162264.0.html

Rickman CR750 Restoration (SOLD)

Offline Marks78

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Re: The "I will git 'er done" build of a 750K8
« Reply #26 on: May 16, 2017, 06:31:21 AM »
Finally, a bit of an update! As is often the case life gets in the way of livin'! Lots of distractions this year so not much actual work has been done but I have ordered almost all the parts needed to get this old CB750K8 back on the road. The set of fork tubes I ordered are 23 13/16" long and are sold as standard length for this bike. I have since found that 23" is the standard length. So I had a set of springs custom made locally by "Cannon RaceCraft" to fit the new tubes. I'm not a fan of spacers and since I needed springs anyway I just had a new set made to fit. Not sure if I will like how the change in trail will affect the handling due to the 13/16" longer tubes but I figure if I don't like it I can just raise them an inch in the triple tree and get the trail back to factory specs. Not real crazy about that "raised tube" look but it shouldn't be too bad. While in the process of rebuilding the forks I also discovered something that has me kind of curious as to how it happened, one of the aluminum "lock" pieces that holds the damper rod in place had been so abused somehow, that it is barrel shaped instead of straight with a taper and it has a crack about an inch long down one side.  Fortunately CSMNL.com still sells them for about $17 USD. Of course shipping is about 3 times that, but it's one of those parts ya gotta have. So the waiting continues as I wait for the part to arrive from the other side of the ocean. Hopefully it will be a short wait! I am really anxious to get this beast on the road this summer!  Get out there and ride!! 8)
« Last Edit: June 19, 2019, 06:00:09 AM by Marks78 »
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Current Stable:
1978 CB750K
1982 XT200J
1982 XJ1100 Maxim
1985 V30 Magna
1998 VT1100 Spirit
2006 GoldWing

Offline Marks78

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Re: The "I will git 'er done" build of a 750K8
« Reply #27 on: June 03, 2017, 05:27:50 AM »
Just got the disk back from Tom at "TrueDisk".  Looks fantastic! He did a great job with fast turn-around time. I had it back one week after putting it in the mail to him. Anxious to get it on the bike and test it out, plus I just like the way it looks. Don't know how much weight loss there was (probably not even one pound) but every bit helps. It does feel noticeably lighter.
 
« Last Edit: July 30, 2017, 06:50:30 PM by Marks78 »
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Current Stable:
1978 CB750K
1982 XT200J
1982 XJ1100 Maxim
1985 V30 Magna
1998 VT1100 Spirit
2006 GoldWing

Offline Marks78

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Re: The "I will git 'er done" build of a 750K8
« Reply #28 on: July 31, 2017, 07:33:52 AM »
A bit more progress (though until I figure out how to attach photos there will be no proof it's happened  :P ).  Got steering head bearings and front wheel bearings installed. Soda blasted the front hub and laced up the new rim with a new set of spokes (only took me two tries to get it right  ::) ).
Also got the forks back together. Looks much better though it will not be a show and shine winner until I strip it to the frame and repaint it.
 Looks like the attachment worked! 
« Last Edit: July 31, 2017, 07:40:14 AM by Marks78 »
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Current Stable:
1978 CB750K
1982 XT200J
1982 XJ1100 Maxim
1985 V30 Magna
1998 VT1100 Spirit
2006 GoldWing

Offline SOHC4 Cafe Racer Fan

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Re: The "I will git 'er done" build of a 750K8
« Reply #29 on: July 31, 2017, 08:48:14 AM »
Quote from: Marks78 on June 03, 2017, 05:27:50 AM
Just got the disk back from Tom at "TrueDisk".  Looks fantastic! He did a great job with fast turn-around time. I had it back one week after putting it in the mail to him. Anxious to get it on the bike and test it out, plus I just like the way it looks. Don't know how much weight loss there was (probably not even one pound) but every bit helps. It does feel noticeably lighter.

Cal went a step further and had slots (either machined or laser cut) into his rotors. Slick.
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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 Marks78

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Re: The "I will git 'er done" build of a 750K8
« Reply #30 on: July 31, 2017, 09:07:31 AM »
Let's see if I can attach another picture, the one attached to that post was connected to photobucket so I deleted it. I agree SOHC4 it is a slick look.  My disc wasn't slotted but still I like the drilled look.
 
« Last Edit: July 31, 2017, 09:09:34 AM by Marks78 »
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Current Stable:
1978 CB750K
1982 XT200J
1982 XJ1100 Maxim
1985 V30 Magna
1998 VT1100 Spirit
2006 GoldWing

Offline SOHC4 Cafe Racer Fan

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Re: The "I will git 'er done" build of a 750K8
« Reply #31 on: July 31, 2017, 01:53:39 PM »
Truedisc did a nice job.  Did they thin the disc too?
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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 Marks78

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Re: The "I will git 'er done" build of a 750K8
« Reply #32 on: July 31, 2017, 02:36:36 PM »
No thinning other than the material that was removed to smooth the surface of the rotor, which of course was minimal.   
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Current Stable:
1978 CB750K
1982 XT200J
1982 XJ1100 Maxim
1985 V30 Magna
1998 VT1100 Spirit
2006 GoldWing

Offline Marks78

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Re: The "I will git 'er done" build of a 750K8
« Reply #33 on: August 18, 2017, 04:43:29 PM »
No work done this time but I had to share what came in the mail today.  ;D  Side covers and emblems from Frankenstuff. Very nice!
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Current Stable:
1978 CB750K
1982 XT200J
1982 XJ1100 Maxim
1985 V30 Magna
1998 VT1100 Spirit
2006 GoldWing

Offline Marks78

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Re: The "I will git 'er done" build of a 750K8
« Reply #34 on: June 18, 2019, 07:18:08 AM »
After a long absence due to many factors I have finally started getting into the carbs on this very slow going project. Found several fun little items of interest.  First off -- the carbs are PD42B's not "A's", apparently from an "F" model. I don't mind this as I'm hoping the 110 main jets help it run a bit richer/better than the 105's the K models came with in 1978. This jet out of #1 carb is in obvious need of cleaning and the floats for #1 were installed upside down!?!? The good news is they don't 'appear' to be overly dirty.  At least no dried, gummy fuel deposits in the bowls. After years of hearing all the hype about Ultrasonic cleaners I decided to break down and buy one, largely due to the condition of the jet out of #1 carb and they look like they haven't been properly cleaned (especially on the outside) in a bunch of years and the fact that it's best to use OEM brass in these carbs.  So we will see. I'm hoping it proves to be money well spent. 

Question -- should I leave well enough alone and not separate the carb bodies? The hoses that connect them look to be OEM so I know they have got to be dried out and at the end of their usable life along with the o-rings, but I don't want to create unnecessary work/problems. 
I am also hoping someone has a good recommendation for the hose that runs between the carb bodies.  Right now they have clear fuel line but I don't know if that is OEM or not. I'm not a big fan of the clear fuel line, it doesn't seem to be overly durable and seems to have a shorter life expectancy, but will use it if that is what's recommended.  No leaks as far as I know but I have only run the engine three times for a total of about two minutes since I bought the bike in 2016. 
EDIT: Can't get all the pictures attached so these will have to do.   :-[
« Last Edit: June 19, 2019, 06:53:23 AM by Marks78 »
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Current Stable:
1978 CB750K
1982 XT200J
1982 XJ1100 Maxim
1985 V30 Magna
1998 VT1100 Spirit
2006 GoldWing

Offline Marks78

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Re: "I will git 'er done, eventually" 750K8 project
« Reply #35 on: June 27, 2019, 03:41:18 AM »
Got a new base installed on the ignition switch.  Much thanks to Tony from OregonMotorcycleParts.com for helping me find a connector that would plug in to the new base.  The original used a different style locking arm and it had broken so I had to do something.  The base came from Vintage750.com and seems to work well though it is not as sturdy as OEM.  I used a mix of new switch parts and OEM switch parts to get what I hope will be a long lasting unit that will work well.
The trickiest part of the change was getting the OEM base disconnected from the switch housing.  Once that was figured out it was an easy job. The key has to be in just the right position or it won't pull apart (or go back together easily).
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Current Stable:
1978 CB750K
1982 XT200J
1982 XJ1100 Maxim
1985 V30 Magna
1998 VT1100 Spirit
2006 GoldWing
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