Author Topic: Andys CB810 K2 -updated 14 Oct 2024 - missing link!  (Read 92620 times)

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Offline andy750

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Re: Andys CB810 K2 -updated 29 Oct: new harness routing questions
« Reply #350 on: October 31, 2023, 02:48:22 AM »
Thanks Per for the detailed info very much appreciated. I already have a pretty good crimping tool so just need to source the connectors.
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 newday777

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Re: Andys CB810 K2 -updated 29 Oct: new harness routing questions
« Reply #351 on: October 31, 2023, 03:19:53 AM »
Here ya go Andy, lots of connectors to choose from. They have whole kits if you so desire too.

https://www.vintageconnections.com/collections/all
Stu
Honda Parts manager in the mid 1970s Nashua Honda
My current rides
1975 K5 Planet Blue my summer ride, it was a friend's bike I worked with at the Honda shop in 76, lots of fun to be on it again
1976 K6 Anteres Red rebuilding project, was originally my brother's that I set up from the crate, it'll breath again soon!
Project 750s, 2 K4, 2 K6, 1 K8
2008 GL1800 my daily ride and cross country runner

Prior bikes....
1972 Suzuki GT380 I had charge of it for a year in 1973 while my friend was deployed and learned to love street riding....
New CB450 K7 after my friend returned...
New CB750 K5 Planet Blue, demise by ex cousin in law at 9,000 miles...
New CB750 K6 Anteres Red, to replace the totaled K5, I sold this K6 at 45k in 1983, I had heavily modified it, many great memories on it and have missed it greatly.....
1983 GL1100A, 1999 GL1500 SE, 1999 GL1500A

Offline andy750

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Re: Andys CB810 K2 -updated 29 Oct: new harness routing questions
« Reply #352 on: November 02, 2023, 05:41:49 AM »
Here ya go Andy, lots of connectors to choose from. They have whole kits if you so desire too.

https://www.vintageconnections.com/collections/all

Thanks Stu!
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 newday777

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Re: Andys CB810 K2 -updated 29 Oct: new harness routing questions
« Reply #353 on: November 02, 2023, 05:44:19 AM »
Here ya go Andy, lots of connectors to choose from. They have whole kits if you so desire too.

https://www.vintageconnections.com/collections/all

Thanks Stu!

👍
Stu
Honda Parts manager in the mid 1970s Nashua Honda
My current rides
1975 K5 Planet Blue my summer ride, it was a friend's bike I worked with at the Honda shop in 76, lots of fun to be on it again
1976 K6 Anteres Red rebuilding project, was originally my brother's that I set up from the crate, it'll breath again soon!
Project 750s, 2 K4, 2 K6, 1 K8
2008 GL1800 my daily ride and cross country runner

Prior bikes....
1972 Suzuki GT380 I had charge of it for a year in 1973 while my friend was deployed and learned to love street riding....
New CB450 K7 after my friend returned...
New CB750 K5 Planet Blue, demise by ex cousin in law at 9,000 miles...
New CB750 K6 Anteres Red, to replace the totaled K5, I sold this K6 at 45k in 1983, I had heavily modified it, many great memories on it and have missed it greatly.....
1983 GL1100A, 1999 GL1500 SE, 1999 GL1500A

Offline andy750

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Re: Andys CB810 K2 -updated 14 Oct 2024 - missing link!
« Reply #354 on: October 14, 2024, 01:12:06 PM »
Update from last year re: new harness. So far all has gone well and 600 miles later the new harness/new battery/new rectifier is doing just fine with no more electrical meltdowns.

So this weekend I took the K2 out for a Fall ride to CT to see the New England Motorcycle museum - weather was perfect 70F, breezy and blue skies. I had been hearing a weird intermittent metal on metal noise the past few weeks while riding to work (via highway) - sounded like it was coming from under the tank somewhere but couldnt quite pinpoint it and decided it would become apparent the more I rode it  8).....so I set off on this 3-4 hr ride and got about 20 min into it when I felt a clunk/jolt coming from the left side. It was that same noise you when you leave the sidestand down and it hits something when riding so I thought maybe that had been it....continued a mile down the road and i had a 50-60 mph section where I would the bike up to see if I could hear any metal noise and then when I came to the firsts top light it happened again...clunk/jolt....ok not good and time to turn around and head home. I limped home carefully fearing something catastrophic - after all this is the cursed K2 (alternator failures/engine bearing failures/engine head leaks/harness melting at the rectifier etc etc...)....

Got home put the bike on center stand and spun the wheel...quickly discovering the problem....I was missing a link in the chain....it was hanging on by one pin  :( see pics below....

Lucky for me I had a spare X-chain sitting in the shelf and installed that without too much drama and after rivet the link took it for a 14 mile test look - no weird metal-noise, no clunk/jolt...all good! I changed the oil just for good measure (it was due) and found no metal shavings  ;D. So....minor drama this time with the cursed K2 and hopefully the list of failures is getting smaller!

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

Online BenelliSEI

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Re: Andys CB810 K2 -updated 14 Oct 2024 - missing link!
« Reply #355 on: October 14, 2024, 01:33:56 PM »
Nice catch! That could have ended badly…..

Offline denward17

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Re: Andys CB810 K2 -updated 14 Oct 2024 - missing link!
« Reply #356 on: October 14, 2024, 01:34:13 PM »
Wow!

Was that a clip on type master, or the riveted master that came loose?

Offline andy750

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Re: Andys CB810 K2 -updated 14 Oct 2024 - missing link!
« Reply #357 on: October 14, 2024, 01:43:02 PM »
Wow!

Was that a clip on type master, or the riveted master that came loose?

Good question its been many years since the chain was installed (bike not ridden much in last 10 years due to all the issues) but I would typically buy a rivet style chain.
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

Online Alan F.

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Re: Andys CB810 K2 -updated 14 Oct 2024 - missing link!
« Reply #358 on: October 14, 2024, 03:43:30 PM »
Yes, good catch.

Offline RAFster122s

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Re: Andys CB810 K2 -updated 14 Oct 2024 - missing link!
« Reply #359 on: October 14, 2024, 04:49:52 PM »
Glad you found it quickly and had a spare on hand to make it a quick repair. Are you going to change out the sprockets too, or did you at the same time?
David- back in the desert SW!

Offline andy750

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Re: Andys CB810 K2 -updated 14 Oct 2024 - missing link!
« Reply #360 on: October 14, 2024, 04:52:30 PM »
Glad you found it quickly and had a spare on hand to make it a quick repair. Are you going to change out the sprockets too, or did you at the same time?

Yes at some point Ill change the sprockets but bike will be parked for winter in about 2 weeks as weather has changed here in Boston.
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 MRieck

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Re: Andys CB810 K2 -updated 14 Oct 2024 - missing link!
« Reply #361 on: October 14, 2024, 04:54:02 PM »
Look at it this way brother.....it used to be massive oil leaks. ;D
Owner of the "Million Dollar CB"

Offline andy750

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Re: Andys CB810 K2 -updated 14 Oct 2024 - missing link!
« Reply #362 on: October 14, 2024, 04:59:43 PM »
Look at it this way brother.....it used to be massive oil leaks. ;D

So true!! Its getting progressively better  ;D ;D ;D
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 HondaMan

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Re: Andys CB810 K2 -updated 14 Oct 2024 - missing link!
« Reply #363 on: October 14, 2024, 08:00:23 PM »
Boy, that was close!
A parting chain often ruins the crankcases(!). I only know of one instance where a guy's masterlink unclipped and lost the cover link like yours and he just came to a stop, unharmed.
See SOHC4shop@gmail.com for info about the gadgets I make for these bikes.

The demons are repulsed when a man does good. Use that.
Blood is thicker than water, but motor oil is thicker yet...so, don't mess with my SOHC4, or I might have to hurt you.
Hondaman's creed: "Bikers are family. Treat them accordingly."

Link to Hondaman Ignition: http://forums.sohc4.net/index.php?topic=67543.0

Link to My CB750 Book: https://www.lulu.com/search?adult_audience_rating=00&page=1&pageSize=10&q=my+cb750+book

Link to website: www.SOHC4shop.com

Online Jerry Rxman Griffin aka MuthaF'er

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Re: Andys CB810 K2 -updated 14 Oct 2024 - missing link!
« Reply #364 on: October 15, 2024, 03:43:03 PM »
Look at it this way brother.....it used to be massive oil leaks. ;D

LMAO

That was close Andy
As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)

Online PeWe

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Re: Andys CB810 K2 -updated 14 Oct 2024 - missing link!
« Reply #365 on: October 15, 2024, 08:49:43 PM »
That chain is a strong one.
My K6 has one, 28.000 km later no sign to give up.

I replaced a chain I killed at 25.000 km due to Ultima Chain Wax. That chain was a little bit stronger, but chains and sprockets needs lubrication.
Loss of good lube affected the x-rings. It went quick after that.

I should have continued to use Motorex chain lube strong spray as I did before and after.

My K6 has broken chain twice. At a burnt out attempt 1980, new Tsubaki chain. Engine stock

On Autobahn when gearing down 2 steps followed by WAT to catch up speed after slow going trucks. 836cc and ca 75-80whp.
Chain snapped. It had stretch much  and I had not adjusted it at last stop. "Next stop" was not a good plan. DID 50HDS o-ring chain.

Rolled to a parking lot beside road and waited for oil. No oil. Got lift by a biker to nearby town Kassel to buy a new chain.

Today's x-chains does not stretch much or at all.
« Last Edit: October 16, 2024, 10:06:10 AM by PeWe »
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