Author Topic: Resurrection of a K0 (Formerly "Ko Club post")  (Read 18417 times)

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Offline JLeather

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Resurrection of a K0 (Formerly "Ko Club post")
« on: December 17, 2007, 07:36:56 PM »
Bought myself a K0 today.  If y'all saw it, it was posted by RJ in the "for sale" section on C-list.  I owe RJ a beer for the heads-up, BTW.  Swung by this evening, paid and loaded it, and it's now safe and sound (but not warm) in my garage.  Candy Blue Green diecast K0.  I have so many questions now.  First of all, I need to figure out what correct parts I have and what I'm missing.  I believe I have the correct ignition switch (there's a black plastic disc on the key) and I've got all 3 spare keys.  They look like they've hardly even been used.  I have the original tank, and it should be a wrinkle tank but it was dark and I couldn't see.  The frame number and engine number are both in the low 16,000's.  Makes it a pretty early '70 I think.  It's got the original gauges, good sidecovers, HM300 pipes (but one is pretty badly rusted).  Also has a cut front fender, but it's wrinkled at the front from something falling on it.  Has the right airbox, carbs, rear fender/taillight.  Engine has a large chunk of fins missing on the jugs, so I'm going to replace them when I get a chance.  Other than that it's in good shape.  Headlight is missing 'cause it used to have a fairing, but I've got the ears for it.  I've got all the turnsignals (short stalks).  Ducktail seat with no rips, though it is pretty well loved.  All in all it was surprisingly complete.  The throttle and kill switch are missing, so I'll have to source new ones for that.  Fork tubes are fairly rusty, but that's an easy fix.  25,000 original miles, and I bought it from the original owner.  He bought it in 1971 in Canada.  I've got copies of his original bill of sale, the import paperwork in 1989, and a letter he sent to Honda in 1971 asking why he couldn't find a CB750 in Canada.  Also got tons of receipts over the years.  A lot of really cool documentation.  He got disheartened a few months ago when he took it somewhere to be worked on and they "lost" his throttle/kill switch and then told him that they couldn't get it running after charging him $1,000 in work.  They didn't even drain the gas tank, cause it smells of 20 year-old gas.  I'll have pics for you guys in a day or two when I get some light around here.

Now, I do have one question.  There are stamped frame numbers in the left of the neck, but there is no VIN plate with the manufacture date or anything.  Is that a K0 thing?  Maybe it's because it was a Canada import?  Like I said, this dude's owned it it's whole life and he said it never had the tag on it.  He had to remove a 1976 Ontario license plate when I bought it.  I was gonna scoop it up if the price was right and part the K0 stuff and chop the leftovers.  However, this bike is so complete with so much history that I have to restore it.  It doesn't need paint, although there's a dent in the tank and some wear on the sidecovers.  I'm gonna leave the paint as is.  I've got cylinders and good HM300 pipes I can remove from my late '70 K1 donor bike, along with a headlight and a throttle.  I need the correct kill switch, and I need to refinish the heatshields.  It's got correct dull heatshields, but unfortunately they're rusty.  Bike hasn't been on the road since 1989.  Turns over, but the compression feels a bit low.  And the carbs DEFINITELY need rebuilding and syncing.  Ok, if you've been reading this post all the way to the end you're probably asking "what did it cost to own such a bike?".  Well, it was 20 minutes from my house, and I picked 'er up for $1000.  I didn't even try and haggle at that price.  I'm pretty psyched.  My own K0.  This is getting kinda addicting...
« Last Edit: December 19, 2007, 06:07:40 PM by JLeather »

Offline gregwaits

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Re: I'm joinin' the K0 club
« Reply #1 on: December 17, 2007, 07:43:59 PM »
Very cool! Sounds like you have a good project ahead of you. Good luck!  ;)

By the way, my recently acquired CB750KO is missing the VIN plate too; I did find the numbers stamped on the frame near the fork stem. Maybe it is a KO issue.
« Last Edit: December 17, 2007, 07:46:22 PM by gregwaits »
1978 CB750K8; 1970 CB450

Offline .RJ

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Re: I'm joinin' the K0 club
« Reply #2 on: December 17, 2007, 07:48:26 PM »
Congrats! :) 

I've got a set of '71 jugs and a head if you want them... they're just collecting dust (and holding my beer bottles) in the garage.

Offline Bob Wessner

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Re: I'm joinin' the K0 club
« Reply #3 on: December 18, 2007, 03:15:00 AM »
Quote
The frame number and engine number are both in the low 16,000's.  Makes it a pretty early '70 I think.

Mine is 17898 and the VIN plate has a build date of 11/69 so I would assume this is earlier. You both say your K0's have no VIN plate on the right at all? Any indication there ever was one (like holes) and it was removed?
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Offline Terry in Australia

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Re: I'm joinin' the K0 club
« Reply #4 on: December 18, 2007, 03:54:40 AM »
Bob, I think VIN plates were only a US requirement back then, we never had them in Oz until around 1975. My K0 does, but it's a US delivered bike.

K1 barrels and heads are different from K0 items as on the K0, there is no front centre 6mm bolt hole and the casting in that area is noticeably different. You could mix and match K1 items, but it won't be "original".

Welcome to the (very exclusive) K0 club mate, don't dare trying to get away with any non-original parts, we're a pretty "anal" bunch, ha ha! ;D
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Offline JLeather

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Re: I'm joinin' the K0 club
« Reply #5 on: December 18, 2007, 04:19:03 AM »
It was pretty dark, so i didn't check for holes, but I don't believe there ever was a VIN plate on it.  The owner said he thought it was a 1970.  Since yours is newer, and is still a '69, I would believe that this was a late '69 manufactured bike that took until 1970/71 to make it to Canada and get registered.  He didn't have a title (gonna hit up ITS) but he does have an affidavit from a Canadian lawyer that says he was the owner since 1971, the original bill of sale dated 1971, and the papers from when it was imported.  Is there any way to effectively date it based on the frame number?

Since everything else appears to be original on this bike, I suppose I'll need to source a K0 jug to fix it.  Anyone got one that ain't gonna cost me an arm/leg?  I also need to find a correct throttle/kill switch and a headlight.

Offline Bob Wessner

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Re: I'm joinin' the K0 club
« Reply #6 on: December 18, 2007, 04:28:06 AM »
Sounds quite reasonable that the VIN plate might just be a U.S. requirement. Might they also have an entirely different series of VIN (frame) numbers in Canada as well?

JLeather, can you post pics of the broken fin areas? Until you find replacement set of jugs, I might have a temp fix for you. I had a similar problem, though limited to the head.
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Re: I'm joinin' the K0 club
« Reply #7 on: December 18, 2007, 04:45:23 AM »
Hello from Canada  ;D

I have a K0 in the mid 16,000 range and it has a vin plate on the frame. FWIW

Built 11 or 12 / 69.

Cheers

Steve

Offline Bob Wessner

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Re: I'm joinin' the K0 club
« Reply #8 on: December 18, 2007, 04:49:04 AM »
Sure, go muddy the waters. ;D

Interesting these details and variations. :-\ Might yours have been imported from the U.S. at one point?
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Re: I'm joinin' the K0 club
« Reply #9 on: December 18, 2007, 04:58:55 AM »
I don't think so. It was a local bike with some history.
It too had the double cut f fender, recessed ignition, wrinkle tank ..only this one had unstamped pipes, with the recess.

Offline JLeather

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Re: I'm joinin' the K0 club
« Reply #10 on: December 18, 2007, 05:04:06 AM »
To be honest, I haven't checked for numbers on the pipes yet.  I suppose it is possible they are unstamped...

As for the fins, the damage is extensive.  There is one area, about the size of a half-dollar, that the fisn are broken off through to the cylinder.  It's on the front right of the jugs.  I can put my finger in and touch to outside of the 4th cylinder.

BTW, Swoop, what part of Canada are you in?  The guy I got the bike from said at the time it was one of only two in his surrounding area.  He had to search for one to buy (he was 16 at the time).
« Last Edit: December 18, 2007, 05:06:35 AM by JLeather »

Offline Terry in Australia

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Re: I'm joinin' the K0 club
« Reply #11 on: December 18, 2007, 05:11:12 AM »
Sounds quite reasonable that the VIN plate might just be a U.S. requirement. Might they also have an entirely different series of VIN (frame) numbers in Canada as well?

JLeather, can you post pics of the broken fin areas? Until you find replacement set of jugs, I might have a temp fix for you. I had a similar problem, though limited to the head.

Hey Bob, what's the fix? I've got several cylinder blocks and heads with busted fins!  ;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 hahnda

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Re: I'm joinin' the K0 club
« Reply #12 on: December 18, 2007, 06:21:14 AM »
Mine is a 10/69 build and its 1009xxx.

good find. keep it original if you can.
Kevin
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Offline gregwaits

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Re: I'm joinin' the K0 club
« Reply #13 on: December 18, 2007, 07:04:38 AM »
Dumb question from a relative noob...

How can you tell the date of manufacture from the number?
1978 CB750K8; 1970 CB450

Swoop

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Re: I'm joinin' the K0 club
« Reply #14 on: December 18, 2007, 07:06:22 AM »
It is usually marked on the vin plate on the frame.

Offline gregwaits

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Re: I'm joinin' the K0 club
« Reply #15 on: December 18, 2007, 07:08:06 AM »
...in the event the bike has no vin plate, only numbers stamped on the frame, sorry.
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Offline hahnda

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Re: I'm joinin' the K0 club
« Reply #16 on: December 18, 2007, 07:11:39 AM »
VIN Plate picture.

Kevin
CB750K4 in pieces
CB750K3 with F trim
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Swoop

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Re: I'm joinin' the K0 club
« Reply #17 on: December 18, 2007, 07:13:04 AM »
I believe only the early sandcasts had no plate with numbers stamped into the frame. I can't remember if the ones after that were riveted on (some were, some were stuck on I think) See if you have two holes where the rivets might have been.
Otherwise you can only date the manufacture date from other bikes that were made around your serial number with known mfg. date.

Offline Bob Wessner

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Re: I'm joinin' the K0 club
« Reply #18 on: December 18, 2007, 07:19:19 AM »
Sounds quite reasonable that the VIN plate might just be a U.S. requirement. Might they also have an entirely different series of VIN (frame) numbers in Canada as well?

JLeather, can you post pics of the broken fin areas? Until you find replacement set of jugs, I might have a temp fix for you. I had a similar problem, though limited to the head.

Hey Bob, what's the fix? I've got several cylinder blocks and heads with busted fins!  ;D

I had a broken fin on the head. I have a spare engine, quite close to mine in terms of VIN. The plan is to someday swap the head. In the meantime, found this stuff. Works well. Color is close, but has a different sheen to it, might try to touch it up with some paint to make it a bit closer. I hated looking down and seeing that ugly chunk of fin missing. Apparently this stuff is used by amateur rocketeers to attach the fins to the rocket body. After ordering on-line I received an eMail welcoming me to the rocketeer community and asking what sort of rocket I was flying. ;D It's held-up great, it's been over a year and 2,000+ miles.

Here's an earlier thread on the fix. http://forums.sohc4.net/index.php?topic=19402.0
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Offline Patrick

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Re: I'm joinin' the K0 club
« Reply #19 on: December 18, 2007, 08:29:57 AM »
Where did you find that stuff, Bob?
1970 CB750 K0
1982 VF750S Sabre
1987 VT1100 Shadow
1979 Yamaha XS11
1969 Yamaha DT1B
etc.

Offline 754

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Re: I'm joinin' the K0 club
« Reply #20 on: December 18, 2007, 09:26:33 AM »
My rocket stays 4 ft from the ground too!!
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Offline Bob Wessner

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Re: I'm joinin' the K0 club
« Reply #21 on: December 18, 2007, 11:05:45 AM »
We'll all be someone else's PO some day.

Offline JLeather

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Re: I'm joinin' the K0 club
« Reply #22 on: December 18, 2007, 04:02:47 PM »
PICS PICS PICS

Oh, and I checked and there are rivets where a VIN plate used to be.  Is that going to cause me lots of problems?  There'd better not be some chopper or something out there running around with my VIN...










Offline JLeather

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Re: I'm joinin' the K0 club
« Reply #23 on: December 18, 2007, 04:03:40 PM »
Oh, and they are unstamped pipes too.  They're pretty rough.  Not sure what I can do with 'em...

Offline Terry in Australia

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Re: I'm joinin' the K0 club
« Reply #24 on: December 18, 2007, 04:12:13 PM »
Hey very nice mate, I see it's got the (very rare) striped sidecovers? ;D What the hell happened to those fins though, did someone shoot it? What's that thing attached to the front of the frame? 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)