67` Bomber running problems

[AshimotoK0]

That experience was the  4k flat-spot, as  described in the instructions for the carb kits (see below)  I was selling a couple of years ago Mo but sold 'em all now and chances of finding any more are pretty slim. The ones I had  came from the Honda UK Service Centre in Nottingham and that closed in the early 70's  I believe. (you can tell as the fitting  instructions are done on a typewriter)

A few people bought multiple kits from me and perhaps they have a spare to sell ...bit of a long shot though, Hopefully, the aftermarket parts were designed based on the upgrades but I wouldn't hold my breath there either.

Not sure about the aftermarket carb kits yourself and Roy bought .. they may address those problems dunno really. Probably why Roy is trying out later model 450 carbs.

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[mo goldie]

Hi Ash

Well what can I say to that but oh Dear....... so the kits what Roy and I got don`t come with the needle Holder and the slow running jet and the pilot Jet I think were the same as Standard which i think in saying was a 35 and 38..... but can`t remember as I just put them in thinking they were the right ones.. But Roy might Know better ?

but as I say they did Not include the Needle Holder anyway...... so I am stuck Now Ash ha

I did when I got back was check Ign Timing ...the next I was going to look at was the Cam lobe clearance but did Not do that yet but if you say that was a thing that Honda offered them kits must have been a problem then ha   :'( so at that Rev`s do you think it is getting too much fuel or Not enough ?

and Not even DSS say they are No longer about


oh well next thing is the forks got to be stripped as also have wet oil stained jeans as lots of fork oil leaking ...... and wanted to be fit for the show on the 23rd this Month  :'(


oh has anyone got one of the rear tank rubbers.............as I was wondering why the tank keep moving about which is Not good ha ?

Cheers

Mo

[mo goldie]

oh also having trouble getting the fork seal holders undone .......... i don't want to get and spend out on a tool that I will most likely only use once ha..

and i nearly got a rear tank rubber a New old stock one for £19 but they would not ship it over............ also don`t know how it will go but put two old needles in the carbs what I found in the old parts that came with the bike which I did Not even know about, they are a little bit longer than the ones what came in them kits so don`t know what it will run like.......... but got to sort out them fork oil seals first as the mrs keep saying she fed up with washing my jeans out of the blow back of oil...... I thought you want to see the bike that's more important   

[Bryanj]

I might be able to use a us contact for you if the rubber is in us

[AshimotoK0]

Those Fork seal Holders are b*ggers to undo unless they have been removed before. Even the Honda special tool won't unfasten them sometimes, as it only has two peg mounts. My mate Graham Curtis made this tool up pictured and used it to remove mine. Problem is it also needs a bit of heat when they are REALLY difficult due to corrosion.

I thought this was a restored bike you bought Mo? ... I really feel your pain.
 
Give me a couple of weeks to try to round up the folks I sold carburettor mod.  kits to ...  to ask if they have anything spare left over. David Silvers won't have those kits ...they didn't even know of their existence.  I told them about them and gave them a copy of the fitting sheet to add to their museum's archives room.

This is Graham Curtis's home made seal holder removal tool (in use on a CB72/77 leg but same seal holder arrangement as the K0 bomber and works on those too (Bomber has alloy bottoms/CB72/77 Steel).


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Below ....This is some other guys tool who is on Facebook (don't know him though).

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[mo goldie]

Hi Ashley


Well yeah it was meant to be all done but as we know there is restored and just Tried too ha I got that one  LOL.

I made a tool up today just like the one you showed.... Not much of a good bit of welding as I only have one which don't use Argon gas so it is spits and spatters  But Ha Ho it done the Job so got one off try the other tomorrow and yes heat was needed too the heat that is.

If you can get any of them kits Ash I would be most Grateful.......  A Bit of a B*gger to hear that at that 4.000 res they had the problem ha just as Mine seem to just not want to get up and go and when you are in todays Traffic and need to get away it just go`s dead is Not good........... so anything that will Help id most Grateful.

Cheers

Mo

[K2-K6]

As a point of interest Mo, which spark plug type are you using in this engine ? The whole designated sequence that is.

[mo goldie]

Hi

Well I am using standard NGK B8ES ones.

[K2-K6]

If you wanted to try something in the way of experimentation, then NGK BPR8EIX may possibly be worthwhile to assess any effects during the flat spot from fuel metering.

The mechanical fit should be equivalent, but you'd need to check side by side to make sure of no anomalies/ impediment before fitting them.

[mo goldie]

Hi everyone

Well lets start off with some good news... all the parts turned up today from DSS..... so thought well I have a week to the show so I will make a start and get them all in..... all was going well as removed the clutch and oil pump etc, put in the new Detent first all fine then thought oh need to remove the gearshift shaft to put the new spring on so taken off the gear leaver  and started tapping it though did not think anything was holding it in so I am sure I heard something in the gear box rattle as tapping it out so stopped where I was....... SO OH dear is it me or have I done something I should not have done ? 

please say keep Knocking it out as that was the gears rattling around..........(Bet its NOT MY LUCK tho) as if Not I give up like Ashley said thought I had just got a restored Bike I may have been better getting a Basket case the Amount of work I have done on it.... thought I was Nearly all there ...... if you say the Engine has to come out or at least got to split the bottom off I will just give up I Think...as just Not had Much luck ha 

[K2-K6]

On page one this thread, there's three item located on that gear shaft #6, 5, 23 that look like they control lateral location of that shaft.

It doesn't show if thy are internal OR located external on the opposite outside of the case on lever change side.

Is there access to look the shaft location on gear lever side ?  Near to sprocket area ?

[Bryanj]

I dont believe Honda would design it so you had tofit to lower case and get opperating mech out of way to mate cases but i suppose anything is possible, none of the other hondas i have worked on 50cc tp 1500cc have done that

[mo goldie]

Yes there is a picture on Ashley's workshop manual thats shows the same as the circlip looks like it is on the left hand side near the Sprocket, so I will take that casing off tomorrow and have a look if it is the circlip on that side I should be ok............Be a load off my mind if it is that........

I will update tomorrow.

 

[mo goldie]

Hi Again

Well Panic over...... it is indeed just a circlip and washer on the sprocket side that holds the shaft in as just watched a YT video
of the CB450 and they put the Gearbox all in and the bottom half of the engine casing on and then put the gearshift in last... Wow thats a load off my mind ha........ so tomorrow I can go in the workshop and hope to get it all back on ....... 

 

[K2-K6]

Good news, at least you'll not wake up thinking about it in a cold sweat 

Looks, from the manual drawing, like a felt washer, retaining washer and lastly the small circlip to stop it all moving and oil inside.