Author Topic: CB400 Four, version 9.0 for ME I flip for 400 fours  (Read 30741 times)

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Offline calj737

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Re: CB400 Four, version 9.0 for ???
« Reply #50 on: May 23, 2016, 11:42:42 AM »
Is it soup yet?
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"Of all tyrannies, a tyranny sincerely exercised for the good of it's victim may be the most oppressive. It may be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated, but those who torment us for our own good will torment us without end for they do so with the approval of their own conscience." - C.S. Lewis

Offline MoMo

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Re: CB400 Four, version 9.0 for ???
« Reply #51 on: May 23, 2016, 06:07:40 PM »
Is it soup yet?

Tried the other day but not had much luck.   The Kroil/Seafoam  is still in the cylinder. Burn Kroil for a couple hours, fire out and add acetone rather carefully, relight with Seafoam??? Does that seem like a plan???? I am off tomorrow so I'll have most of the day,  unless I go out to buy a Kawasaki Concours that is...Larry

Offline Stev-o

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Re: CB400 Four, version 9.0 for ???
« Reply #52 on: May 23, 2016, 06:53:11 PM »
That "recycled taco meat" on the piston almost made me wanna puke!

Subscribed but plz dont show that again!
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline MoMo

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Re: CB400 Four, version 9.0 for ???
« Reply #53 on: May 23, 2016, 08:23:57 PM »
That "recycled taco meat" on the piston almost made me wanna puke!

Subscribed but plz dont show that again!



You mean this, right?




Offline Stev-o

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Re: CB400 Four, version 9.0 for ???
« Reply #54 on: May 23, 2016, 08:34:56 PM »
ARGHHHH!!!!!!!!
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline SOHC4 Cafe Racer Fan

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Re: CB400 Four, version 9.0 for ???
« Reply #55 on: May 23, 2016, 11:47:18 PM »
That "recycled taco meat" on the piston almost made me wanna puke!

Subscribed but plz dont show that again!



You mean this, right?


Piston Diarrhea
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 calj737

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Re: CB400 Four, version 9.0 for ???
« Reply #56 on: May 24, 2016, 04:53:02 AM »
That stud has to be replaced too...  :'(
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"Of all tyrannies, a tyranny sincerely exercised for the good of it's victim may be the most oppressive. It may be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated, but those who torment us for our own good will torment us without end for they do so with the approval of their own conscience." - C.S. Lewis

Offline MoMo

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Re: CB400 Four, version 9.0 for ???
« Reply #57 on: May 24, 2016, 10:58:12 AM »
That stud has to be replaced too...  :'(


You mean I have to be replaced???. 

Offline zammykoo

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Re: CB400 Four, version 9.0 for ???
« Reply #58 on: May 24, 2016, 11:27:32 AM »
ARGHHHH!!!!!!!!

A little photoshop magic... have I gone too far?  ;D


Offline strynboen

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Re: CB400 Four, version 9.0 for ???
« Reply #59 on: May 24, 2016, 12:14:17 PM »
no just set fire on it....
i kan not speak english/but trying!!
http://forums.sohc4.net/index.php?topic=60973.0
http://forums.sohc4.net/index.php?topic=144758.0
i hate all this v-w.... vords

Offline RAFster122s

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Re: CB400 Four, version 9.0 for ???
« Reply #60 on: May 24, 2016, 01:40:17 PM »
WAY TOO FAR...STAY FAR-FAR AWAY

Disgusting
David- back in the desert SW!

Offline SOHC4 Cafe Racer Fan

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Re: CB400 Four, version 9.0 for ???
« Reply #61 on: May 24, 2016, 02:23:03 PM »
ARGHHHH!!!!!!!!

A little photoshop magic... have I gone too far?  ;D



That just jumped the shark.


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 MoMo

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Re: CB400 Four, version 9.0 for ???
« Reply #62 on: May 24, 2016, 08:20:39 PM »
ARGHHHH!!!!!!!!

A little photoshop magic... have I gone too far?  ;D




Piston diarrhea to the ninth degree.  Good news to follow...Larry

Offline MoMo

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Re: CB400 Four, version 9.0 for ??? FREE AT LAST
« Reply #63 on: May 24, 2016, 08:34:52 PM »
First thing that came to my mind was"I'm free, I'm free, and freedom tastes of reality".



I awoke this morn and heated #4 piston for somewhere around 10 to 15 minutes with a propane torch




The filled the cylinder with Seafoam and lit it up until it burned off. In conjunction with the following tools #4 broke loose.






After the Seafoam fire went out I lightly tried to move the breaker bar, then I put the brass mallet on top of #4 and tapped it with the ballpeen. Piston broke loose :) :) :)


The cylinder :-\

« Last Edit: May 24, 2016, 08:39:48 PM by MoMo »

Offline NobleHops

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Re: CB400 Four, version 9.0 for ??? FREE AT LAST
« Reply #64 on: May 24, 2016, 08:37:42 PM »
 8) 8) 8) 8) 8)
Nils Menten * Tucson, Arizona, USA

I have a motorcycle problem.

My build thread: NobleHops makes a 400F pretty for his wife: http://forums.sohc4.net/index.php?topic=131210.0

Offline MoMo

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Re: CB400 Four, version 9.0 for ??? FREE AT LAST
« Reply #65 on: May 24, 2016, 08:40:40 PM »
8) 8) 8) 8) 8)

Thanks Nils, it was a good day to say the least...Larry

Offline grcamna2

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Re: CB400 Four, version 9.0 for ??? FREE AT LAST
« Reply #66 on: May 24, 2016, 09:31:00 PM »
Good to hear that Larry  :)
75' CB400F/'bunch o' parts' & 81' CB125S modded to a 'CB200S'
  I love the small ones too !
Do your BEST...nobody can take that away from you.

Offline MoMo

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Re: CB400 Four, version 9.0 for ??? FREE AT LAST
« Reply #67 on: May 24, 2016, 10:27:54 PM »
Good to hear that Larry  :)


Thanks Bill,  it was odd how it was tight as an old New England school marm then all of a sudden broke loose...Larry

Offline MoMo

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Re: CB400 Four, version 9.0 for ??? FREE AT LAST
« Reply #68 on: May 24, 2016, 10:33:09 PM »
Next step will be pulling the motor so I can split the cases to assess any possible lower end damage.  But I think I shall remove clutch cover before pulling  motor.  Pretty sure the clutch could be as ugly as #4 cylinder..

Offline calj737

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Re: CB400 Four, version 9.0 for ??? FREE AT LAST
« Reply #69 on: May 25, 2016, 04:48:28 AM »
That cylinder is screaming, "Bore me! Bore me! Bore me some more!!!"
'74 550 Build http://forums.sohc4.net/index.php?topic=126401.0
'73 500 Build http://forums.sohc4.net/index.php?topic=132935.0

"Of all tyrannies, a tyranny sincerely exercised for the good of it's victim may be the most oppressive. It may be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated, but those who torment us for our own good will torment us without end for they do so with the approval of their own conscience." - C.S. Lewis

Offline grcamna2

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Re: CB400 Four, version 9.0 for ??? FREE AT LAST
« Reply #70 on: May 25, 2016, 06:55:38 AM »
Larry,
The bike must have sat w/ water in the tank(but the tank looked so clean..,probably not the orig. tank)and the petcock in 'reserve' so the water seeped in somehow.
75' CB400F/'bunch o' parts' & 81' CB125S modded to a 'CB200S'
  I love the small ones too !
Do your BEST...nobody can take that away from you.

Offline SOHC4 Cafe Racer Fan

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Re: CB400 Four, version 9.0 for ??? FREE AT LAST
« Reply #71 on: May 25, 2016, 08:29:16 AM »
The cylinder :-\


Not so clean.  An slight overbore or new sleeve might be in the future?  The consequences of piston diarrhea.
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 grcamna2

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Re: CB400 Four, version 9.0 for ??? FREE AT LAST
« Reply #72 on: May 25, 2016, 09:30:24 AM »
But at best you 'flushed the pot'  :D and can start w/ a clean slate.
75' CB400F/'bunch o' parts' & 81' CB125S modded to a 'CB200S'
  I love the small ones too !
Do your BEST...nobody can take that away from you.

Offline MoMo

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Re: CB400 Four, version 9.0 for ??? FREE AT LAST
« Reply #73 on: May 25, 2016, 06:05:02 PM »
That cylinder is screaming, "Bore me! Bore me! Bore me some more!!!"


I hope to resleeve that rather than bore all. I had 4 sleeves but sold them, hope to get one back.

Larry,
The bike must have sat w/ water in the tank(but the tank looked so clean..,probably not the orig. tank)and the petcock in 'reserve' so the water seeped in somehow.


It sat with #4 plug out, a previous PO cross threaded the head and left the plug out. 


More pics to come, motor is out of the frame and I've found even more damage.  Have to sit and pay bills now

Offline zammykoo

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Re: CB400 Four, version 9.0 for ??? FREE AT LAST
« Reply #74 on: May 25, 2016, 07:41:08 PM »
More diarrhea in the crankcase?