Author Topic: 1967 CB450K0 Black Bomber Rebuild - By Royhall  (Read 2209 times)

Offline AshimotoK0

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Re: 1967 CB450K0 Black Bomber Rebuild - By Royhall
« Reply #15 on: February 13, 2019, 11:38:26 AM »
Sorry to ask that question but is its worth restoring that bike?

That will cost a lot (not thnking at the time) and I notced that CB450 parts are even more expensive (and rare) as CB750 K0 parts.

And in the end you will have a nice looking bike with not matching numbers.

I don't think that's quite true Uli ..I have both  UK 10/69 built CB750K0 and  1967 Black Bomber projects and the Bomber parts are much easier to source than proper CB750K0 originals. I have a log of quite a few Bombers, all UK 66-67 bikes  ( ...evidently we imported a massive batch  in 1966 and it took forever to sell them ...that's why it's rumoured that we never got the sandcast and we only got the diecast in Jan. 1970  because Honda UK got their fingers burned with the Bomber fiasco). Why the hell didn't we just fit loads of 'D' street scrambler kits?

My log shows that the engine and frame numbers of all UK Bombers were miles apart, so, as long as Roy has cases in that wide range, I imagine that's still acceptable. The sandcast community fit different (but correct range) replacements all of the time.

So go for it Roy ...I'm sure you will have a cracking bike at the end of it all to be proud of ... and it will be a genuine UK not a USA import as so many of them are.
“Alright friends, you have seen the heavy groups, now you will see morning maniac music. Believe me, yeah. It’s a new dawn.” Grace Slick, Woodstock '69 .. In the year of the Sandcast.

Offline Sgt.Pinback

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Re: 1967 CB450K0 Black Bomber Rebuild - By Royhall
« Reply #16 on: February 13, 2019, 11:44:30 AM »
Thanks for info. I wouldn’t dare, here in Germany I would have more trouble in finding parts or a case.

Sorry for asking and good luck! That will be very interesting to follow.
cheers, Uli

Offline Laverda120

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Re: 1967 CB450K0 Black Bomber Rebuild - By Royhall
« Reply #17 on: February 13, 2019, 11:55:09 AM »
Good start Roy.
Not only do we have a documented restoration going on but there's also a 'Who done it' mystery plot as well!
Alan, Haynes are great at the throwaway lines, I had the same thing with the rocker dowls on the cb250rs, 'To remove the rocker shafts first remove the two dowl pins that maybe a tight fit with pliars'. There was no mention of having to use a spark eroder to get them out!
Looking forward to seeing more photos Roy.
1976 Honda 400/4
1977 Honda 400/4
1981 Honda CB250RSA
1977 Rickman Honda CR750
1999 Honda VFR 800FX
1955 750 Dresda Triton
1978 Moto Morini 350 Sport
1982 Laverda 120 Jota
1924 Triumph 550SD
2012 Stanley Battery Drill

Offline Sgt.Pinback

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Re: 1967 CB450K0 Black Bomber Rebuild - By Royhall
« Reply #18 on: February 13, 2019, 11:59:48 AM »
Would

CB450 E 1026580

Be correct?
cheers, Uli

Offline AshimotoK0

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Re: 1967 CB450K0 Black Bomber Rebuild - By Royhall
« Reply #19 on: February 13, 2019, 12:27:26 PM »
Here is an excerpt from my log showing the wide range between original  frame and  engine Numbers (taken from either V5's or old green-style log books). all 1966-67 UK bikes.

  Frame     Engine
1009239   1007281
1010688   1008734
1009411   1006630
1009163   1007210
1017546   1019739
1010723   1008766
« Last Edit: February 13, 2019, 12:41:20 PM by AshimotoK0 »
“Alright friends, you have seen the heavy groups, now you will see morning maniac music. Believe me, yeah. It’s a new dawn.” Grace Slick, Woodstock '69 .. In the year of the Sandcast.

Offline royhall

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Re: 1967 CB450K0 Black Bomber Rebuild - By Royhall
« Reply #20 on: February 13, 2019, 02:12:28 PM »
Thanks for info. I wouldn’t dare, here in Germany I would have more trouble in finding parts or a case.

Sorry for asking and good luck! That will be very interesting to follow.
No need to apologise Uli you raised a valid and interesting point. From my point of view I am happy if I could make a small profit after they are finished even though I rarely sell them. I make sure I am not one of the people that will spend 8k restoring a bike worth 4k just so that every detail is correct. Mine are for riding, although only on sunny days as I'm not stupid. ;D

Anyone solved the "Who done it" mystery yet as I aint telling who or how much. ;)
« Last Edit: February 13, 2019, 02:14:40 PM by royhall »
Current bikes:
TriBsa CCM 350 Twin
CB350F in Candy Bacchus Olive
CB750F2 in Candy Apple Red
CB1300SA in Black
Triumph T100C
Suzuki GS1000HC (Bastard tried to burn me to death last night)
CB450K0 Black Bomber (current project)

Offline AshimotoK0

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Re: 1967 CB450K0 Black Bomber Rebuild - By Royhall
« Reply #21 on: February 13, 2019, 03:08:01 PM »
Thanks for info. I wouldn’t dare, here in Germany I would have more trouble in finding parts or a case.

Sorry for asking and good luck! That will be very interesting to follow.
No need to apologise Uli you raised a valid and interesting point. From my point of view I am happy if I could make a small profit after they are finished even though I rarely sell them. I make sure I am not one of the people that will spend 8k restoring a bike worth 4k just so that every detail is correct. Mine are for riding, although only on sunny days as I'm not stupid. ;D

Anyone solved the "Who done it" mystery yet as I aint telling who or how much. ;)

It's Rosemary the Telephone Operator
“Alright friends, you have seen the heavy groups, now you will see morning maniac music. Believe me, yeah. It’s a new dawn.” Grace Slick, Woodstock '69 .. In the year of the Sandcast.

Offline MrDavo

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Re: 1967 CB450K0 Black Bomber Rebuild - By Royhall
« Reply #22 on: February 13, 2019, 07:26:31 PM »
Here's what I use to get engines back in:



Big Leigh is 6' 7" and can get a Harley engine into the boot of my car. he's also very good at keeping our place in a taxi queue.
1969 Honda CL450 'Scrambler'
2005 Harley XL1200R Sportster

Offline Bryanj

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Re: 1967 CB450K0 Black Bomber Rebuild - By Royhall
« Reply #23 on: February 13, 2019, 07:35:02 PM »
A winged helmet and its OGRI!!!!!

Offline royhall

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Re: 1967 CB450K0 Black Bomber Rebuild - By Royhall
« Reply #24 on: February 13, 2019, 07:37:00 PM »
Got the clutch cover off, the screws came out easily. As expected it a black oily smelly mess in there. Got it to fit onto my 750 stand as Dave suggested using some bent thread bar but think I will need something a bit closer to the real mounting hole centres for the rebuild.

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Ironically the liberal coating of black goo appears to have protected the internals very well. It may not be as bad as I first thought.

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The oil pump didn't get away lightly though. This hole in the screen is a weak point in the pump. The design of the casting behind creates a funnel effect with the oil that concentrates it into a very small area and wears a hole in the screen. Once the hole is there, that allows crud to enter the oiling system which in never a good thing.

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On the other side the alternator cover has been repaired with epoxy and painted. A sure sign that the bike has been over on that side as it punches the gear change lever through the cover right at that point. Now this part is one very rare puppy due to it's exposed location. Stocks of this were used up years ago so may have to get it welded and maybe a ceramic or powder coated finish.

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This was the delights waiting for me in the sump pan. I will be glad to get this apart and all the parts cleaned. This smelly black goo gets onto everything, I think it's been under my finger nails for a week now. For the first time in a while I have started wearing gloves when handling these parts.

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Next adventure is into the gearbox and crank. Should be fun.
« Last Edit: February 13, 2019, 07:44:12 PM by royhall »
Current bikes:
TriBsa CCM 350 Twin
CB350F in Candy Bacchus Olive
CB750F2 in Candy Apple Red
CB1300SA in Black
Triumph T100C
Suzuki GS1000HC (Bastard tried to burn me to death last night)
CB450K0 Black Bomber (current project)

Offline Bryanj

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Re: 1967 CB450K0 Black Bomber Rebuild - By Royhall
« Reply #25 on: February 13, 2019, 11:33:50 PM »
That is the wrong oil left in way too long

Offline royhall

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Re: 1967 CB450K0 Black Bomber Rebuild - By Royhall
« Reply #26 on: February 17, 2019, 11:04:11 AM »
Got into the gearbox and it was a pleasant surprise. Although it's also covered in the black smelly goo it appears to have protected the internals quite well. The parts are obviously going to need a good clean and thorough inspection before re-use. But the initial checkover is looking good.

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Not too sure yet how I am going to clean these parts, last time I used new engine oil and a clean paint brush. I am a little bit cautious about using anything solvent as it gets into every nook and cranny and will cause wear if I cant get it all out again. Will see how it goes.

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As you can see from the pictures the gears are all looking good with hardly any wear and no broken bits. This looks normal Honda to be honest, good strong gearboxes. The crank is looking pretty gunged up, this is the bit (along with the strange head) that I am most nervous about. The crank does turn very smoothly but all that goo is bound to be inside it. It may need a bit of specialist attention?

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So I will pull it all out and clean everything up then see where I am with it. The gearbox bearings are quite hard to source and are expensive but I would really like to change them whilst I am in there. The bronze bushes will get changed as they are available from CMS. The next instalment will be after the bits are clean and I know more about the condition of the parts.

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As you may be aware I actually started the engine build a few months ago so "by the magic of the internet" it may take me no time at all to get the parts clean and ready for reassembly. Or for those familiar with Blue Peter, it will be a here's one I made earlier moment. ;D
« Last Edit: February 17, 2019, 11:15:05 AM by royhall »
Current bikes:
TriBsa CCM 350 Twin
CB350F in Candy Bacchus Olive
CB750F2 in Candy Apple Red
CB1300SA in Black
Triumph T100C
Suzuki GS1000HC (Bastard tried to burn me to death last night)
CB450K0 Black Bomber (current project)

Offline Bryanj

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Re: 1967 CB450K0 Black Bomber Rebuild - By Royhall
« Reply #27 on: February 17, 2019, 11:47:07 AM »
Red diesel is a good cleaner as it has a small lubricating property, i have even  been known to fill car sumps with it and run engine for short period to wash out sludge when head gasket gone

Offline royhall

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Re: 1967 CB450K0 Black Bomber Rebuild - By Royhall
« Reply #28 on: February 17, 2019, 11:47:59 AM »
Now the lovely chap I bought the bike from also supplied some other interesting stuff. Firstly another set of crankcases to replace the broken ones on the bike. These were carefully selected to be in the correct number range for a 1967 Bomber.

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He also supplied a large file of documents from over the bikes history. This had some very interesting items in it such as a page from Motorcycle news from October 1978 showing the bike for sale. Nice to look over some of the other bikes and the prices. I particularly like the CB500T advert with "Ban forces Sale". Or maybe CB400F "must go overdraft to clear". You just don't see these adverts any more.

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What about old tax disc from the last time it was on the road.

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Or letters from previous owners. Plus there is a lot more paper in there.

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« Last Edit: February 17, 2019, 11:51:23 AM by royhall »
Current bikes:
TriBsa CCM 350 Twin
CB350F in Candy Bacchus Olive
CB750F2 in Candy Apple Red
CB1300SA in Black
Triumph T100C
Suzuki GS1000HC (Bastard tried to burn me to death last night)
CB450K0 Black Bomber (current project)

Offline AshimotoK0

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Re: 1967 CB450K0 Black Bomber Rebuild - By Royhall
« Reply #29 on: February 17, 2019, 12:58:02 PM »
Great period literature there Roy  :D

Here are a couple of DS ads from early 90's .. Anyone got his original from 1986?

Better resolution here :-

https://www.dropbox.com/sh/qpq1uz2bnpv0f6p/AAAz95QXBXWwVjAtUqUhg0-aa?dl=0

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“Alright friends, you have seen the heavy groups, now you will see morning maniac music. Believe me, yeah. It’s a new dawn.” Grace Slick, Woodstock '69 .. In the year of the Sandcast.