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Messages - royhall

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16
Project Board / Re: 1967 CB450K0 Black Bomber Rebuild - By Royhall
« on: March 07, 2024, 07:24:30 AM »
No they won't do Mo. I think I may have a spare set somewhere but may take me a while to find them.

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17
Project Board / Re: Honda CB750K5 Restoration by Royhall
« on: March 07, 2024, 06:39:33 AM »
That's very interesting Trig, my idle adjustment is conveniently on the left. Meant to be I guess. It's definitely not as it left the factory.


18
Project Board / Re: Honda CB750K5 Restoration by Royhall
« on: March 06, 2024, 08:53:48 PM »
Stunning build Roy. Looks like the same colour as my old K6. Did the bike not come with a original K5, K6 fuel tank ?
Thanks for that Trig. That's the tank it came with. Didn't notice until it was painted that it was an earlier item with the tap on the wrong side. K0/K1 maybe?

Edit.
Just checked photos of all models and you are of course correct Trig that only K5/K6 had the tap on the left. First time I have checked that as it was already painted so it was going on whatever. It's not 100% correct anyway, although the Boyer ignition dates back to when the bike was new so probably counts as classic (digital classic).

19
Project Board / Re: Honda CB750K5 Restoration by Royhall
« on: March 06, 2024, 05:04:09 PM »
Just a quick reminder of the piece of junk that arrived from the USA all that time ago. Believe it or not that's the same tank. I thought this was dog rough until I saw Mick's 500 starting point.

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20
Project Board / Re: Honda CB750K5 Restoration by Royhall
« on: March 06, 2024, 04:29:43 PM »
It is Ted. The one that looks like it was caught magnet fishing off Wigan Pier.

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21
Project Board / Re: Honda CB750K5 Restoration by Royhall
« on: March 06, 2024, 03:51:43 PM »
Well done Roy, thats a real credit to you and your determination. Enjoy.
Thanks Julie. Those choke lever arms you sent me did the trick. I must say Matt Harper really know his onions when it comes to carbs, what a shame Gerben wasn't as careful. That wasn't the only problem Matt found either, even down to partially blocked brassware that hadn't been cleaned properly. I think me and Gerben are done now.

22
Project Board / Re: Honda CB750K5 Restoration by Royhall
« on: March 06, 2024, 03:13:55 PM »
Thanks James. And those nice shiny clamps finished it off a treat. Cheers.

23
Project Board / Re: Honda CB750K5 Restoration by Royhall
« on: March 06, 2024, 03:10:44 PM »
Well, after 27months of one problem after another, plus a budget that I will never see again it's finished. It would have been way cheaper just to buy a restored bike, but where's the fun in that. I spent the afternoon going through every setting to try and dial out a tiny misfire and it's done the trick. The first ride out was just around the block due to a clunking noise when the engine was on load. That was traced to a simple interface twix chain and chain guard. An easy fix with an M8 half nut as a spacer and longer bolt to move it away from the chain. Then the second test run was faultless although I only did 2.5 miles. It was already at full temp from the carb balancing so it was a true indication. The engine ran like a well oiled Singer sewing machine. Also pleased to report no fuel or oil leaks. I am really pleased how it turned out when I look back at the POS I started with. Thanks to everyone who helped along the way, I truly couldn't have done it without you all. And just in time for spring as well.

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24
Project Board / Re: 1967 CB450K0 Black Bomber Rebuild - By Royhall
« on: March 05, 2024, 09:04:53 AM »
I am going to look into this later in more depth. I do know that the K0 carbs are quite different from the K1 mainly around the throttle spring area, plus a few of the K1 brassware items don't fit the K0. The carb body castings are also quite different. But for now, here's that table. You can see from this that the 14H and 14L are different to the rest.

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26
Project Board / Re: 1967 CB450K0 Black Bomber Rebuild - By Royhall
« on: March 04, 2024, 06:45:24 PM »
Forgot to say, the kits I have ordered are made in Taiwan by a company called Daminedin and they have really good reviews. The dodgy items that people are struggling with are the Keyster kits. I also wonder if people are assuming that all 450 carbs are the same, there are at least 4 different versions of these carbs (not including the 500T version) and only a kit made specifically for that carb type will fit correctly. The ones I have ordered are specific for 14H and 14L only. I'm not surprised people are having problems with 450 carb kits. I have a chart somewhere detailing a lot of the changes, I will look for it tomorrow and post it here.

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27
Project Board / Re: The rebirth of Lazarus
« on: March 04, 2024, 04:34:57 PM »
It will still happen if your battery is fully charged even on a lead acid type.

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28
Project Board / Re: The rebirth of Lazarus
« on: March 04, 2024, 02:01:49 PM »
Are you by any chance using a fully charged AGM battery. If you are, the charging probably won't cut in until the battery gets down to about 12.4 volts. Makes it look like the charging isn't working. There's a way of testing that explained in my CB750K5 restoration thread. Spent a whole day on mine pulling everything apart just to find there was nothing wrong in the first place.

29
Project Board / Re: 1967 CB450K0 Black Bomber Rebuild - By Royhall
« on: March 04, 2024, 07:45:45 AM »
Hi Mo. Did you ever get the electronic ignition working? The hanging idle is often caused by worn out springs in the ignition advancer. Very common problem. Also check the clutch cable isn't fouling the throttle as it's close to it at the carb end. Did you fit the springs in the vacuum chamber?


30
Project Board / Re: 1967 CB450K0 Black Bomber Rebuild - By Royhall
« on: March 03, 2024, 09:24:57 PM »
To be honest these carbs are so easy to get on and off I think I will give the kits a chance first. I can always use the other parts if things don't go so well. I will be fitting the springs on the pistons though.

Ash, don't know if it matters but those service parts are for 14C carbs. I am assuming the later carbs already came with the modified parts but I have no way of checking that. I have options here, I will try the kits first and if that's problematic I will fit the genuine bits, then I could clean and try the bits that are in the carbs now. The last option is not a good one as I have no idea if they have been messed with in the past.
I still haven't read anywhere about the vacuum springs, looks like a mod that not many do.

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