Author Topic: Stev-o's K4 "Big Bang Theory"!  (Read 34389 times)

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Offline CycleRanger

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Re: Stev-o's K4 "Big Bang Theory"!
« Reply #100 on: July 10, 2017, 07:23:55 PM »
Quick update....with the engine back in the frame and bolted up, I next wanted to install the oil tank.

What were I'm sure forty three year old oil lines looking kind of nasty, I really didn't want to reinstall those.  Forum member Rafi started re-popin these oil lines last year, I had an early set he made installed on The Park Racer.

After I pulled this motor, I PM'd him asking if he had any left. He didn't, but said he planned on making some more, and he has. These are a great upgrade for a real reasonable cost.  Thanks Rafi.
[see his thread in the parts for sale section if you are interested]





Mmmm I do like those oil lines too!! :)
Do you have a copy of the Honda Shop Manual or Parts List for your bike? Get one here:
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Offline riverfever

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Re: Stev-o's K4 "Big Bang Theory"!
« Reply #101 on: July 10, 2017, 07:31:59 PM »
Moving pretty quickly Steve! Won't be long and I'll be expecting a video.
http://forums.sohc4.net/index.php?topic=127186.0

"You wouldn't think that out here...a man could simply run clear...out of country but oh my...oh my...nothing but the light." -Ben Nichols

Offline Stev-o

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Re: Stev-o's K4 "Big Bang Theory"!
« Reply #102 on: July 12, 2017, 04:54:02 PM »
Moving pretty quickly Steve! Won't be long and I'll be expecting a video.

I can send you a video now but will be pretty boring w/o a running engine!
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline Stev-o

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Re: Stev-o's K4 "Big Bang Theory"!
« Reply #103 on: July 12, 2017, 05:02:30 PM »
A little cooler today [only 96!] so thought I'd get a little shop time in.

Pulled the rear wheel to clean and check sprockets, brake shoes, bearings and the BT45, all look good. Also cleaned the chainguard and swingarmarm while the wheel was off and out of the way.
The Bridgestone does show some minor wear, but I think it's good for another 1000 miles.




Wheel back on....


 
« Last Edit: August 20, 2017, 12:02:51 PM by Stev-o »
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline riverfever

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Re: Stev-o's K4 "Big Bang Theory"!
« Reply #104 on: July 12, 2017, 05:32:31 PM »
96??!!  :o  I would melt. It was in the 50's here and lovely.

That rear wheel looks drop dead gorgeous Steve!
http://forums.sohc4.net/index.php?topic=127186.0

"You wouldn't think that out here...a man could simply run clear...out of country but oh my...oh my...nothing but the light." -Ben Nichols

Offline Stev-o

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Re: Stev-o's K4 "Big Bang Theory"!
« Reply #105 on: July 12, 2017, 05:36:25 PM »


That rear wheel looks drop dead gorgeous Steve!

Thanks...it needs stainless spokes but that will happen at a later date.
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline Tews19

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Re: Stev-o's K4 "Big Bang Theory"!
« Reply #106 on: July 12, 2017, 07:12:08 PM »
96??!!  :o  I would melt. It was in the 50's here and lovely.

96 is nuts! I was sweating just from reading the temperature!
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1970 Honda CB750 survivor.

Offline MauiK3

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Re: Stev-o's K4 "Big Bang Theory"!
« Reply #107 on: July 12, 2017, 09:26:34 PM »
Wait, someone has new oil lines?
Who makes them?
Are any available?
I would like some new ones for my K3.
Steve
1973 CB 750 K3
10/72 build Z1 Kawasaki

Offline CycleRanger

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Re: Stev-o's K4 "Big Bang Theory"!
« Reply #108 on: July 12, 2017, 09:42:38 PM »
Wait, someone has new oil lines?
Who makes them?
Are any available?
I would like some new ones for my K3.
Steve

http://forums.sohc4.net/index.php/topic,166903.0.html
Do you have a copy of the Honda Shop Manual or Parts List for your bike? Get one here:
https://www.honda4fun.com/materiale/documentazione-tecnica
CB750K5        '79 XL250s     CL350K3
CB750K3        '76 XS650      '76 CJ360T

Offline Restoration Fan

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Re: Stev-o's K4 "Big Bang Theory"!
« Reply #109 on: July 13, 2017, 03:04:30 PM »
Wait, someone has new oil lines?
Who makes them?
Are any available?
I would like some new ones for my K3.
Steve
Not only that, you won't find a more stand up guy than Rafi.  Very good guy.
Ron

Stella - Logan's Senior Project    78 750K http://forums.sohc4.net/index.php?topic=141761.0

Logan's Reward - CB500 and CB550 Cafes    http://forums.sohc4.net/index.php/topic,147787.0.html

Offline Stev-o

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Re: Stev-o's K4 "Big Bang Theory"!
« Reply #110 on: July 17, 2017, 09:51:26 AM »
Quick update....


Chain cleaned and back on...


 


New oil filter and polished cover back on....



 


Left side covers button up...





But holding off putting the sprocket cover back on.  Upon inspection of the wiring harness, noticed some burning on the large connector...


 

...and another wire looks to have been pinched. Damn PO!



 


Luckily, its just the short alternator wiring harness, no damage to the main harness.  A replacement is on the way...


« Last Edit: August 20, 2017, 12:04:40 PM by Stev-o »
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline Terry in Australia

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Re: Stev-o's K4 "Big Bang Theory"!
« Reply #111 on: July 18, 2017, 02:30:01 AM »
Looks great Steve, well done! Are the spokes really badly rusted, or just covered in chain grease? Cheers, Terry. ;D
I was feeling sorry for myself because I couldn't afford new bike boots, until I met a man with no legs.

So I said, "Hey mate, you haven't got any bike boots you don't need, do you?"

"Crazy is a very misunderstood term, it's a fine line that some of us can lean over and still keep our balance" (thanks RB550Four)

Offline Stev-o

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Re: Stev-o's K4 "Big Bang Theory"!
« Reply #112 on: July 26, 2017, 03:43:52 PM »

 Are the spokes really badly rusted, or just covered in chain grease?

The rear spokes are neither rusty or covered in grease, I did give them a cleaning when I pulled the wheel.  They are a dull gray as opposed to shiny stainless on the front. One day they will get changed, possibly when the tire wears out and gets replaced.
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline Stev-o

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Re: Stev-o's K4 "Big Bang Theory"!
« Reply #113 on: July 26, 2017, 03:51:47 PM »
Quick update and a question....

Received the alternator harness and got it all connected up.  Installed the sprocket cover, ground cable as well as the AGM battery, I now have a cranking motor! [another minor milestone]





When I installed the ground cable to the solenoid the rubber cap that goes over the connection is worn out and I want to replace it.  I checked the fiche and do not see it. Anyone have the proper name or part number. Look here for reference...thx




 


'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline CycleRanger

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Re: Stev-o's K4 "Big Bang Theory"!
« Reply #114 on: July 26, 2017, 04:48:28 PM »
Quick update and a question....
When I installed the ground cable to the solenoid the rubber cap that goes over the connection is worn out and I want to replace it.  I checked the fiche and do not see it. Anyone have the proper name or part number. Look here for reference...thx




http://www.easternbeaver.com/Main/Elec__Products/Connectors/Boots/boots.html
or
http://www.ebay.com/itm/8-Pcs-15mm-x-8mm-Smoking-Pipe-PVC-Battery-Terminal-Insulating-Covers-LW-/181775772171
or
http://www.oldbikebarn.com/parts-by-model/honda/cb200/honda-cb200-cb-cl350-cb360-starter-terminal-rubber-boot.html
Do you have a copy of the Honda Shop Manual or Parts List for your bike? Get one here:
https://www.honda4fun.com/materiale/documentazione-tecnica
CB750K5        '79 XL250s     CL350K3
CB750K3        '76 XS650      '76 CJ360T

Offline Stev-o

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Re: Stev-o's K4 "Big Bang Theory"!
« Reply #115 on: August 04, 2017, 04:16:03 PM »
Thanks Ranger, but I ended up having one.

Got that installed and got the area looking tidy....



'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline Stev-o

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Re: Stev-o's K4 "Big Bang Theory"!
« Reply #116 on: August 04, 2017, 04:20:35 PM »
Next up is everyone's favorite task....installing carbs!

I have my "special tools"...........




Really not bad, had the carbs on in 15 min.   Then cleaned up and installed the airbox...



« Last Edit: August 20, 2017, 12:05:35 PM by Stev-o »
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline seanbarney41

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Re: Stev-o's K4 "Big Bang Theory"!
« Reply #117 on: August 04, 2017, 04:50:46 PM »
Jesus Steve-O, you been using that 2x4 for a while, huh.

I like a little smear of bearing grease on the lip of the carb boots...
If it works good, it looks good...

Offline Stev-o

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Re: Stev-o's K4 "Big Bang Theory"!
« Reply #118 on: August 04, 2017, 05:04:42 PM »
Jesus Steve-O, you been using that 2x4 for a while, huh.

I like a little smear of bearing grease on the lip of the carb boots...

That 2x4 is perfect, Sean.  Old and soft, easy on the carbs, and angled just right on one end.

Any lube is good lube!
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline budman

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Re: Stev-o's K4 "Big Bang Theory"!
« Reply #119 on: August 05, 2017, 06:43:53 AM »
I'm guessing you use the 2 x 4 as a lever to push the carbs into the carb boots?
Bud

1973 CB750K3 Chopper
2021 Indian Scout

Offline Stev-o

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Re: Stev-o's K4 "Big Bang Theory"!
« Reply #120 on: August 05, 2017, 07:14:19 AM »
I'm guessing you use the 2 x 4 as a lever to push the carbs into the carb boots?

Actually to push the carb boots [with carbs] onto the head, Bud.
That's how they came off during disassembly.
The 2x4 fits within the frame from the top and gives ample amount of leverage.

I may start re-popping this "tool"!
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline budman

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Re: Stev-o's K4 "Big Bang Theory"!
« Reply #121 on: August 05, 2017, 10:09:48 AM »
I'm guessing you use the 2 x 4 as a lever to push the carbs into the carb boots?

Actually to push the carb boots [with carbs] onto the head, Bud.
That's how they came off during disassembly.
The 2x4 fits within the frame from the top and gives ample amount of leverage.

I may start re-popping this "tool"!

Maybe you could have them CNC'd out of billet aluminum.  How much?
Bud

1973 CB750K3 Chopper
2021 Indian Scout

Offline Stev-o

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Re: Stev-o's K4 "Big Bang Theory"!
« Reply #122 on: August 07, 2017, 07:30:22 AM »
I'm guessing you use the 2 x 4 as a lever to push the carbs into the carb boots?

Actually to push the carb boots [with carbs] onto the head, Bud.
That's how they came off during disassembly.
The 2x4 fits within the frame from the top and gives ample amount of leverage.

I may start re-popping this "tool"!

Maybe you could have them CNC'd out of billet aluminum.  How much?

Alum is too hard, Bud, needs to be old southern soft pine!
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline Stev-o

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Re: Stev-o's K4 "Big Bang Theory"!
« Reply #123 on: August 07, 2017, 07:45:09 AM »
So, with carbs on and a cranking motor, I followed Hondaman's suggestions on how to prime and get oil pressure:  kick over motor 40-50 times followed by a couple short cranks with the electric starter [about 3 seconds ea].

I did this a couple times but could not get the oil light to go out.  Then, getting all excited, I thought hey, with fuel in the carbs this thing might start?!

Hooked up the fuel line, cranked it over a couple times and we have a runner!!!

Here is a video, the start up was a little premature as the cables weret yet connected and the air filter not yet installed..





https://www.flickr.com/photos/156452678@N06/36018847620/in/dateposted-public/

So stoked!!
« Last Edit: August 07, 2017, 07:54:28 AM by Stev-o »
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline budman

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Re: Stev-o's K4 "Big Bang Theory"!
« Reply #124 on: August 07, 2017, 08:10:27 AM »
Cool!  Glad you got it running.  Maybe you can repop that left handed throttle lever and make a few bucks.
Bud

1973 CB750K3 Chopper
2021 Indian Scout