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Messages - Richie 550/4

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1
CB500/550 / Re: Can 550f1 Rocker cover
« on: April 12, 2020, 09:57:11 AM »
Hi all

Thanks for that info.

That mod looks like a great idea for reducing tappet noise. Thanks Ash. I think it could well be a possible fix for my rocker cover, as it’s only the very outside seat that has stretched. I’m going to look further into the drill out and bushing idea first, as I’ve just managed to find new rocker spindles and would be a shame not to use them now.

I will report back on progress.

Many thanks and stay safe.

Richard

2
CB500/550 / Re: CB550K3 carb needles ???
« on: April 11, 2020, 04:04:20 PM »
Hi.

Sorry to break the subject matter.

Can you tell me where you are finding your serial numbers on your Kei Hin carbs please?

I am currently renovating my bank and the only number I can find is 069A

Everything I have read and heard you guys discussing are numbers with a letter prefix.

Any help greatly appreciated.

Richard

3
CB500/550 / Can 550f1 Rocker cover
« on: April 11, 2020, 03:26:30 PM »
Hi All.

Would any of you guys out there in sohc land have a rocker cover for a ch550f1? It is the 8 shaft type cover not the 4 shaft style.

I have discovered mine has a worn rocker spindle seat. I am going to ask my local engineering firm if they could drill out and bush the damaged seat. But thought I may just ask here too.

Btw. Has anyone had any experience with drilling and bushing a rocker cover? It’s the outside seat that worn, no4 inlet only worn on the very outer seat.

Any info would be appreciated.

Many thanks and stay safe all.

I hope to be able to ride this money pit soon🤞🤞🤞🤞

4
New Member Introductions / Re: 550 top and bottom rebuild
« on: February 18, 2020, 07:26:50 PM »
Sad news!

I was picking up some parts from a local custom builder today, he had recently had a workshop fire and one of the casualties was a recently fully rebuilt CB750 early 70’s

A very sad sight indeed.

Hope he can salvage her?

R

5
New Member Introductions / Re: 550 top and bottom rebuild
« on: February 18, 2020, 07:22:55 PM »
Hi all.

Just a quick update on my progress with the rebuild.

So. I have the crankcase back together for the final fit. Just the primary shaft to fit and oil pump. I’ve been through the gears and all seems well.

Attached a few pics

Many thanks to those who have been so helpful coming forward with your advise and experience.

Richard

6
CB500/550 / Re: CB550 handlebar width
« on: February 17, 2020, 03:13:14 PM »
Thanks AGAIN! Ken

Yes! this is starting to become apparent. The previous owner had mounted the voltage rectifier just where the throttle cables run and I think this could be the problem more than the length. hard to tell at this stage as its in bits. Think I may leave buying one off cables for now. The bank balance is already suffering from this project!!

Richard

7
CB500/550 / Re: CB550 handlebar width
« on: February 17, 2020, 02:42:20 PM »
It WAS! The uk spec. Not much left if the original front end though.

I had an issue with the bike revving on full lock. I’m just getting some new cables made up with a bit extra in the length, but it would be nice to know how much wider my bars are than the std.

Don’t want to end up with them too long. My bars measure 760mm or 30” from bar end to bar end.


8
CB500/550 / Re: CB550 handlebar width
« on: February 17, 2020, 11:39:36 AM »
Hi Julie.

Thanks for the photos.

So I can take it from the pics that either will work. It strikes me that having it on the top of the mount does make more sense though.

Think I’ll go ahead with having it opposite to as it is currently.

Thanks for the help AGAIN!

9
CB500/550 / Re: CB550 handlebar width
« on: February 17, 2020, 11:10:49 AM »
Hi Again

Could anyone also clarify a detail on the throttle return cable please?

My current return cable at the carb end has a shaped/dished washer that goes around the the mount on the butterfly mount.

It seems that mine is on the wrong way around, meaning the dish of the washer does not locate around the mount correctly.

I notice on David silver and cms photos that they are indeed this way around. However in photos in the service manuals they are shown the other way around.

Anyone come across this issue before? I am having new cables made slightly longer and want to be sure of this detail.

Please see attached photo

Richard

10
CB500/550 / CB550 handlebar width
« on: February 17, 2020, 09:55:21 AM »
Hi All

Could anyone out there tell me the std handlebar width for a cb550f1 I have wider straight bars on my brat style and the engine revs on full lock. Just looking into having new longer cables made and would be good to know the std bar width so I can work out how much longer to get them made.

Many thanks all

Richard

11
New Member Introductions / Re: 550 top and bottom rebuild
« on: February 11, 2020, 08:51:01 AM »
Hi Trigger

Thanks for the valuable advise. I owe you a drink or two

12
New Member Introductions / Re: 550 top and bottom rebuild
« on: February 10, 2020, 04:43:24 PM »
Hi Trigger.

Do you have any suggestions on removing these plugs on the head? Is this a drilling out job or is there a clever way of removal? I take it from your mess these are not available for replacement and need to be machined?

Richard

13
New Member Introductions / Re: 550 top and bottom rebuild
« on: February 10, 2020, 04:37:18 PM »
Hi all

Thanks for your advise members.

I agree Trigger. Very nerve wracking to think some media may be still lurking somewhere. Thanks for the heads up on the head plugs being a problem area to keep an eye on. Are we talking all 3 plugs per side of the head or just the central one on the Oil way?

Oddjob. I would be interested in taking a pair of black bearings off your hands if the offer still stands. I would feel more confident knowing the spot on size is down there. Let me know what you want for them.

Many thanks. I look forward to maybe meeting up with some of you guys this year. I take it there are members meetings organised?

14
New Member Introductions / Re: 550 top and bottom rebuild
« on: February 09, 2020, 06:29:12 PM »
Botley. Oxford.

Where bouts in Bucks are ya?

15
New Member Introductions / 550 top and bottom rebuild
« on: February 09, 2020, 02:49:31 PM »
Hello all.

Sorry for disappearing on you all late last year. I have been flat out clearing my Callander ready to attack the rebuild.

I am pleased to report that I have now got my teeth well into the rebuild and thought it was time I gave you all an update on my progress so far.

Since my last posts, I have spent many an evening researching and violating parts and knowledge from friends and the beloved you tube.

I now have the crankcase split and have retrieved the cam chain guide which appears to have been the initial offending part that caused the cam chain to break in the first place. In 600 miles since the previous owner had done a “top end” rebuild. The cam chain had been orb completely through the guide face and then right through the steel backing, getting caught on the backing and subsequently breaking the chain. Lucky for me, as the engine had only been running for a short time under these conditions it has not done a huge amount of damage. The big end and main bearing are caked in steel particles from the guide and are no good, but this has not damaged the journals.

So. After this investigation, I have now a big long list of parts on the way for the rebuild. Luckily I only needed one pair of A bearings (the rare and elusive A bearing) my local engineer shop has measured the crank and has said a B bearing still brings me within clearance. 

I have had the top and bottom end vapour blasted and some of the covers, I’ve also made a couple of repairs to the bore fins and painted the block. Whilst in the bottom end I’ve found the reason for poor fifth gear selection. Worn main shift fork. I’ve sourced all new bearings apart from three which are no longer available and again, luckily. These three are still good in the original, so will be going back in along with a multitude of new parts. David Silver and CMSNL have both done very well out of me over the past few months.

I have spent hours cleaning up parts and polishing out some slight corrosion on some parts in the bottom end. It seems this bike may have been say for a while at some point in its life. A few parts like the shift drum had some minor pitting and the shift fork spindle. So out came the polishing paste’s and away I went.

So enough of my waffle. Here are some pics for your rainy days.

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