1967 CB450K0 Black Bomber Rebuild - By Royhall

[mo goldie]

oh

that wire Ash is to the Battery, as I said it go`s in the wiring loom and comes out again to that right hand side of that plug that go`s back into the rectifier so that should not be doing that you say ?

and still a bit puzzled at the regulator yellow/green to go to the yellow you say, and I have to join the yellow and the white to get the full output of the stator so is it to go into the both of them before it comes into the rectifier or do it go in after ...and I would have thought at the red coming out of the rectifier as need to regulate what's coming out DC not the AC, do you think you could do me one of your great little sketch`s of how it go`s please.

 

[mo goldie]

well just a bit of an update.

today I have been doing a bit of wiring from the stator upto the rectifier and also puting the regulator in a nice place so out the way. I have decided not use the wiring loom wires from the plug at the tool box end as I am using my own made wires from as I said the stator to the Reg/Rec also joined the yellow and white to get the full out put of the stator coils...  they are all there just need the Master ( Ash ) to give me the heads up as to where to put them wires now I have them all ready to put on.

Cheers

Mo

[AshimotoK0]

Sorry Mo ... not sure what you need from me ... it sounds like you have the wiring details pretty much sussed out if you are wiring directly and not going through the bikes main loom ? Or am I missing something?

[mo goldie]

Hi Ash

Yes you are right in that I have made a wiring up only from the stator to the rec/Reg but Not wired them in yet ( that's where I Need your help please as to how )

yes I Know where the wires go into the Rectifier but I am Not sure where to put the green/yellow from the Regulator as you said that go`s to the yellow..... But the bit I don`t get is it on the wire before it go`s to the rectifier ? as I said I have joined the two stator wires together to give max out put to go to the Rectifier but where do I put that Green/yellow to ?

Just my way of thinking Not being up on electrics is that I thought you would put that on the red coming out of the rectifier so if the volts got to high then that would dump the excess to ground.......... as I say my thought was if I put it on the yellow it would be Getting the AC voltage going in to the Reg ?

all confusing Ash to me lol.......... more of a mechanical I am lol...............

cheers Mo       

[AshimotoK0]

That regulator is confusing I know. On the Honda system it's a 3 wire unit with a sense to the battery voltage but on the Kwak one it's just a connection between ground and the AC output.

I have illustrated the Kwak diagram . You need to connect the Yellow/Green wire to YELLOW on your Honda and thde black to ground (battery negative).

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[mo goldie]

Hi Ash

are so I was right then ( makes a change ha lol ) it do go on the AC side with the white/yellow which are joined to the rectifier.

Ok will try that out soon and get back with some picture when it looks a bit more tidy wire wise.

Thanks again for your help Ash

cheer Mo

[mo goldie]

Here is the update Ash.

Well wired all up and the first picture is the Regulator mounted under where the Rectifier will be mounted on the top, the Heatsink which the Rectifier is mounted under that, and the other picture is a little gadget that reads the out put and that is with Lights On and revs at 3,000 ... but I will still do the test using the 10A on the meter ( Without the starter  lol )  to check that.... but i hope all should be there Now... that Rectifier do get warm Ash I Know it is meant to as why you said mount it on a heatsink which glad I did that.

So how do you think that is Now ?

Cheers

Mo

[McCabe-Thiele (Ted)]

Neat looking wiring.👍

[AshimotoK0]

Looking good then Mo

[mo goldie]

Hi Ash

Well yes i hope it is Now getting there and thanks for all your help and Advice to get me there.... I can`t do any more at the Moment as got a bit of a miss fire on the Left hand side Cylinder, I checked the Plug and Replaced that also the wiring at the coils etc I have got the Carb back off and going to check all jets and put it in my Ultrasonic cleaner and put that back on but I can Not run it up as had to get some more fuel pipe as it was Not long enough as I thought that the routing of that was Not good and the New pipe wont be here till the end of next week now due to the Easter Hols, so all on hold for that now.

Thanks Ted I do try to do things a bit neat if I can lol as Ashley said also about the heat sink for the Rectifier so that`s all good now..........

Cheers all till the next help............ in Advance LOL 

Mo     

[royhall]

Been recently having a play with the Black Bomber trying to get it to run lean instead of burning the plugs black and bore washing the cylinders. I cant believe it's 4 years since I finished this project and I still haven't got it right. It got itself dumped in the back of the garage for a while as it was peeing me off.

I have tried 500T carbs and 450K3 carbs all of which ran very rich. I decided it must be the silly expensive pattern air filters at fault, so have gutted out the folded paper element and replaced it with oiled foam. They were really restrictive as you cant even breath air through a single piece of the old element, it's like cardboard (usual crap quality pattern parts). That done, I have refurbished the original 14C carbs that were meant to be on a Bomber with the help of a few parts supplied by Ash. Fitted the carbs and refurbed air filters this afternoon and things appear to have improved some.

Unfortunately I have noticed another issue that I hadn't seen before. When fitting the plastic air filter boxes that have the rubber inlet fitted, only about a quarter of the air filter is being used as the rubber intake blocks the rest. So about three quarters of the air filter is breathing through a 1/4" hole, that cant be right. Can somebody with a Bomber please have a look if it's the same on yours. I may possibly run it without the plastic cover fitted as I think it's just a noise suppressor. That will allow the engine to breath through 100% of the filter element. Am going to give it a 10 mile run tomorrow and see what pans out. I can feel a dump it in the back of the garage moment coming on again.

[mo goldie]

Hi Roy

I sure do know where your coming from with the problems with running rich. I went out on mine sunday as just fixed a left carb bowl from leaking for the 5th time. I have done everything from Flattening the float Bowl checking the float Hight, also tried allsorts of gasket seal,
anyway get back to the ride it was going Great for the first 5 miles then it started to splutter and nearly thought I was going to have to call out the Breakdown van. anyway I managed to get home... next day striped the left carb and found loads of the silicone all in the bowl and it blocked all the jets too ..... so after cleaning that all out and putting it in my Uatsonic for a deep clean put a very very thin layer of a new type of silicone on and left that over night and put it back on and went out for anther ride this afternoon and it was popping and banging a bit on that left side so pulled over tweaked the mixture screw and no more popping and it did all run fine..... I will take the spark plugs out tomorrow see what they look like ?

Getting back to what you say about the air filters ..... i did put a bit on a thread a while ago to say what I had done to mine, all the paper folds were so dirty I decided to cut them all out and put in Foam as well so all good there now,

Not thought about leaving the plastic box part out but yes might help with the rich running let us Know how it go`s without that on, also if it do make a lot of sucking sounds without that Ha

One more thing they seem to be one bike that Needs All the attention and one minute it runs lovely the next you think it is like an 60`s TV and need a slap to get the picture back ha..... well I must admit I do love riding it tho LOL           

[McCabe-Thiele (Ted)]

Yikes I admire the persistance of Black Bomber owners in trying to fix the rich running issues.
All that pain in taking carbs off repeatedly it would seem.

On my 400 before the rebuild I had my carbs off a couple of times - a task I hated so much with the bruising & cuts to my hands that happened every time.

[royhall]

I ran the bike today for about 9 miles. It ran very well indeed so looks like I'm getting there. Looking at the plugs afterwards they are still black but it looks like burnt oil rather than soot. It's probably not done 100 miles yet so the rings are still bedding in, plus it's been stood for a good while. The white smoke from the exhausts has also now stopped so it does look like it's leened out a bit now. Time to give it some use and see how it goes.

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[AshimotoK0]

I ran the bike today for about 9 miles. It ran very well indeed so looks like I'm getting there. Looking at the plugs afterwards they are still black but it looks like burnt oil rather than soot. It's probably not done 100 miles yet so the rings are still bedding in, plus it's been stood for a good while. The white smoke from the exhausts has also now stopped so it does look like it's leened out a bit now. Time to give it some use and see how it goes.

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Good news then Roy. I suppose you have to consider that loads of Bombers clocked up tens of thousands of miles each back in the day and must have performed OK ... once the initial 14C carb upgrade was done very early on. It's possibly just a case of getting a collection of decent carb parts and making up the best set you can, retaining Keihin brassware and making sure the piston/cap assemblies are in good order... i have seen loads that stick after 50 odd years of storage and abuse. Did you run it with the plastic air filter covers removed in the end?