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Author Topic: 550 K0 rescue  (Read 5308 times)

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Offline jonda500

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Re: Just brought home a K0 550
« Reply #25 on: May 31, 2016, 05:32:54 PM »
I have never used rubber bands in my life to replace a cylinder cover? - if you're blind & fingerless or have no mechanical aptitude, please do use them!
John
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Remember that an ignoramus is only someone who doesn't know something you just learned yesterday!

A starter clutch thread:
http://forums.sohc4.net/index.php/topic,122084.0.html
1972 CB500K1 original 4 owner bike
1972 CB500K1 returned to complete/original condition
1975 CB550F built from parts - project thread:
http://forums.sohc4.net/index.php/topic,149161.msg1711626.html#msg1711626
197? CB500/550 constructing from left over parts
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Offline calj737

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Re: Just brought home a K0 550
« Reply #26 on: May 31, 2016, 05:34:04 PM »
Quote from: jonda500 on May 31, 2016, 05:32:54 PM
I have never used rubber bands in my life to replace a cylinder cover? - if you're blind & fingerless or have no mechanical aptitude, please do use them!
John
Or you simply want a wee bit of insurance to avoid a catastrophe.
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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: Just brought home a K0 550
« Reply #27 on: May 31, 2016, 05:39:54 PM »
^^ neither have I, what are rubber bands used for?...Larry
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Offline calj737

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Re: Just brought home a K0 550
« Reply #28 on: May 31, 2016, 05:41:57 PM »
On a 500/550/650 valve cover, since the rockers are integrated into the cover, rubber bands are stretched from intake to exhaust tappet to hold them all "up" as the cover is installed; reducing the chance of bending a valve or such ineptitude. Can be done without using them, but its like wearing a helmet when you ride- Chances of survival are better.
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'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 MoMo

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Re: Just brought home a K0 550
« Reply #29 on: May 31, 2016, 05:45:24 PM »
Quote from: calj737 on May 31, 2016, 05:41:57 PM
On a 500/550/650 valve cover, since the rockers are integrated into the cover, rubber bands are stretched from intake to exhaust tappet to hold them all "up" as the cover is installed; reducing the chance of bending a valve or such ineptitude. Can be done without using them, but its like wearing a helmet when you ride- Chances of survival are better.


Always wear a helmet, guess I'll have to start wearing rubbers....................................................bands that is...Larry
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Offline jonda500

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Re: Just brought home a K0 550
« Reply #30 on: May 31, 2016, 05:47:34 PM »
the rubber bands are used to hold the rockers up so they can't hang down and get caught on the edge of the valve stems when slapping the cover back on (can bend valves when you tighten it down) - I check them with my fingers and eyes and have never seen it happen...
John
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Remember that an ignoramus is only someone who doesn't know something you just learned yesterday!

A starter clutch thread:
http://forums.sohc4.net/index.php/topic,122084.0.html
1972 CB500K1 original 4 owner bike
1972 CB500K1 returned to complete/original condition
1975 CB550F built from parts - project thread:
http://forums.sohc4.net/index.php/topic,149161.msg1711626.html#msg1711626
197? CB500/550 constructing from left over parts
1998 KTM 380 (two stroke) recent impulse buy, mmmm...

Offline MoMo

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Re: Just brought home a K0 550
« Reply #31 on: May 31, 2016, 05:50:12 PM »
Quote from: jonda500 on May 31, 2016, 05:47:34 PM
the rubber bands are used to hold the rockers up so they can't hang down and get caught on the edge of the valve stems when slapping the cover back on (can bend valves when you tighten it down) - I check them with my fingers and eyes and have never seen it happen...
John



I constantly check every rocker when reassembling a 500/550-never had a problem so I don't need no stinkin' rubbers
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Offline flybox1

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Re: Just brought home a K0 550
« Reply #32 on: May 31, 2016, 08:57:36 PM »
OK....remember the rubbers whenever the head cover goes on. Got it.
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Offline BomberMann650

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Re: Just brought home a K0 550
« Reply #33 on: May 31, 2016, 09:59:20 PM »
Quote from: flybox1 on May 31, 2016, 08:57:36 PM
OK....remember the rubbers whenever the head cover goes on. Got it.

The school nurse told me the rubber was to cover the head, did I miss something?
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Offline Duanob

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Re: Just brought home a K0 550
« Reply #34 on: June 02, 2016, 02:04:33 PM »
Quote from: jonda500 on May 31, 2016, 05:32:54 PM
I have never used rubber bands in my life to replace a cylinder cover? - if you're blind & fingerless or have no mechanical aptitude, please do use them!
John

Thanks for being a today's jackass, I appreciate it. The last guy to mown and work on my first 550 didn't use rubber bands it cost me several new valves and guides. But I like that UR 'special'.
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"Just because you flush a boatload of money down the toilet, doesn't make the toilet worth more",  My Stepfather the Unknown Poet

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Offline flybox1

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Re: 550 K0 rescue
« Reply #35 on: June 02, 2016, 06:01:40 PM »
Valves were waaaaaaaaay out.  Like measured in mm out :o
Cam chain adjusted
Daiichi points plate removed.
Advancer all rusted up, so a short detour to clean, polish, and trim springs.
Lubed and installed back on bike with a TEC plate and points.  Static timed.
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'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

Past Bikes
1974 550K0 (stock), 1973 CB350F (stock), 1983 Yamaha XS400K (POS)
77/78 cool 2 member #3
"Knowledge without mileage equals bullsh!t" - Henry Rollins

"This is my CB. There are many like it, but this one is mine…"

Offline grcamna2

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Re: 550 K0 rescue
« Reply #36 on: June 02, 2016, 06:17:45 PM »
Nice 550 flybox  8)
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Offline flybox1

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Re: 550 K0 rescue
« Reply #37 on: June 04, 2016, 06:56:32 AM »
Piston and cyl wall
Odo shows 20k+....someone did some work in here. :D
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'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

Past Bikes
1974 550K0 (stock), 1973 CB350F (stock), 1983 Yamaha XS400K (POS)
77/78 cool 2 member #3
"Knowledge without mileage equals bullsh!t" - Henry Rollins

"This is my CB. There are many like it, but this one is mine…"

Offline calj737

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Re: 550 K0 rescue
« Reply #38 on: June 04, 2016, 06:57:22 AM »
That's a good thing, hopefully  :-\
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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 Lostboy Steve

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Re: 550 K0 rescue
« Reply #39 on: June 04, 2016, 07:16:41 AM »
Quote from: flybox1 on June 04, 2016, 06:56:32 AM
Piston and cyl wall
Odo shows 20k+....someone did some work in here. :D



Strange that it looks fresh inside but the points plate and stuff was in need of attention. Nice find either way!


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Offline Stev-o

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Re: 550 K0 rescue
« Reply #40 on: June 04, 2016, 08:53:43 AM »
Quote from: calj737 on June 04, 2016, 06:57:22 AM
That's a good thing, hopefully  :-\

Key word: hopefully.   At only 20+K miles, it would make me curious why it needed work?

Hey Fly - what boroscope is that? Link??  The quality looks real good, I'd like to pick one up.
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'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline flybox1

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Re: 550 K0 rescue
« Reply #41 on: June 04, 2016, 12:40:44 PM »
Quote from: Stev-o on June 04, 2016, 08:53:43 AM
Quote from: calj737 on June 04, 2016, 06:57:22 AM
That's a good thing, hopefully  :-\

Key word: hopefully.   At only 20+K miles, it would make me curious why it needed work?

Hey Fly - what boroscope is that? Link??  The quality looks real good, I'd like to pick one up.

Here is the thread about it  ;D
http://forums.sohc4.net/index.php/topic,155785.0.html
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'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

Past Bikes
1974 550K0 (stock), 1973 CB350F (stock), 1983 Yamaha XS400K (POS)
77/78 cool 2 member #3
"Knowledge without mileage equals bullsh!t" - Henry Rollins

"This is my CB. There are many like it, but this one is mine…"

Offline flybox1

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Re: 550 K0 rescue
« Reply #42 on: June 06, 2016, 07:56:51 AM »
Finally getting it light enough to get up on the gurney to deal with the snapped pan bolt.
Going to try left handed drill bits first.
Someone thought more wax was better ::)  Plastic putty knife cut through the majority of this. 
ZEP Purple and a pressure washer did the rest.

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'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

Past Bikes
1974 550K0 (stock), 1973 CB350F (stock), 1983 Yamaha XS400K (POS)
77/78 cool 2 member #3
"Knowledge without mileage equals bullsh!t" - Henry Rollins

"This is my CB. There are many like it, but this one is mine…"

Offline tweakin

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Re: 550 K0 rescue
« Reply #43 on: June 06, 2016, 04:35:18 PM »
Thats a score, good luck with bringing it back!
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Offline flybox1

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Re: 550 K0 rescue
« Reply #44 on: June 09, 2016, 04:54:09 PM »
The offender.  Snapped oil pan bolt.


No match for my Implements of Extraction


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'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

Past Bikes
1974 550K0 (stock), 1973 CB350F (stock), 1983 Yamaha XS400K (POS)
77/78 cool 2 member #3
"Knowledge without mileage equals bullsh!t" - Henry Rollins

"This is my CB. There are many like it, but this one is mine…"

Offline CycleRanger

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Re: 550 K0 rescue
« Reply #45 on: June 09, 2016, 06:57:30 PM »
Quote from: flybox1 on June 09, 2016, 04:54:09 PM
The offender.  Snapped oil pan bolt.
No match for my Implements of Extraction

Well done! My efforts are almost never as successful... :\
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Offline Cityscapedview

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Re: 550 K0 rescue
« Reply #46 on: June 09, 2016, 08:48:22 PM »
Great find!
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Offline grcamna2

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Re: 550 K0 rescue
« Reply #47 on: June 09, 2016, 08:51:28 PM »
Quote from: Cityscapedview on June 09, 2016, 08:48:22 PM
Great find!

Good work removing that broken oil pan bolt.
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  I love the small ones too !
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Offline RAFster122s

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Re: 550 K0 rescue
« Reply #48 on: June 14, 2016, 08:51:33 PM »
Would a few hard smacks with a BFH and some heat and a good penetrating oil be a better first start than breaking out the drill? Heck I would be doing that and use a good set of vice grips on it before drilling it.
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