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Topics - paulbaker1954

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CB500/550 / Spotted on my travels - bit off topic but!!!
« on: January 02, 2019, 06:39:12 AM »
Spotted this on my travels in Hanoi, city of 5 million scooters

Nearly a Honda badge but not quite

Anyone seen anything like this before

CB500/550 / Tank flushing/cleaning
« on: September 07, 2018, 12:40:26 AM »
I am fitting a new petcock in a week or so and wanted to take the opportunity to give the tank a good clean out, any recommendations welcome as to how to get any low lying bits/shrapnel out

The tank is in good nick inside I just want to clean it out

CB500/550 / K&L petcock
« on: August 19, 2018, 12:49:15 AM »
Anyone used them, any good?

Oh I hate this annual bash !!!

Last year my 16 Yamaha Tracer and the Four were £153 with Hastings

Now Hastings, Bennets and others will not cover the Four as they say its classification has changed to an AB7 or something

Carole Nash quoted me £323 for both which is more than 2X what I Paid last year

I can get 2 separate quotes at £105 on the Tracer with Hastings and then a further £124 for the Honda with Footman James but prefer to have both on same policy

Any recommendations anyone I hate having to go through this nightmare every damn year

CB500/550 / Erratic speedo
« on: July 13, 2018, 12:27:53 AM »
Has become somewhat sticky and jumpy above 60

Know cable and drives and cushions are all ok

Is there a way of lubricating the internals without stripping it?

CB500/550 / 550 Fork Ears
« on: July 02, 2018, 03:59:03 PM »

CB500/550 / Tank Capacity
« on: June 13, 2018, 09:29:25 AM »
Honda Tech Spec says 14L and 4L reserve.

Does this mean 10L before I hit reserve and then I have 4L left i.e. is 14L the TOTAL capacity?

CB500/550 / No 3 carb body wanted
« on: May 18, 2018, 07:43:41 AM »
Anyone got one in their pile of bits they would be willing to part with, for a fee of course

The air vent pipe has snapped off on mine, probably doesn’t matter as long as the carbs are free to vent still but knowing it’s missimg will eternally bug me I know

CB500/550 / Testing carb float levels with water?
« on: May 14, 2018, 04:56:18 PM »
May sound a daft question but am just rebuilding my carbs and wondered if i can test the float level using water (off bike of course !!!)

Just hate messing around with petrol all over the place

But maybe water has some different physical property from petrol that means its not feasible

Also does the level need to be about 2mm below the bowl/body joint from memory?

CB500/550 / Great service from CMSNL but I wonder
« on: May 11, 2018, 01:05:12 AM »
In a bid to fix my horrible sounding no 1 exhaust I emailed them along the lines of I bought these 2 years ago and surprised to see a baffle failure after only 2k dry miles

I have to say great service as they have replaced it at no cost but looking at their web site I have got to wondering....

They list single pipes for 2 3 and 4 cylinders but always show a single pipe for no 1 as unavailable

This has got me wondering if there was an original known manufacturing issue with no 1 and they have pulled my replacement unit from a full set which is why there is no availability of no 1 pipes

I believe DS use the same supplier as well but may be wrong

So I was just wondering if anyone else has heard of any similar problems

CB500/550 / Help with Cruzinimage carb kit
« on: May 10, 2018, 12:30:23 AM »
I just received my rebuild kit and am puzzled

In the pic I can identify

3 different size main jets
Pilot jet
Air mixtutre screw and spring
Emulsion tube, needle and clip
Float valve

What I am confused about are the additional o rings as I am not sure where they should go

I guess the 4 larger ones are for the fuel inlet connectors and the two others maybe for the bowl drain screws but you only need 12 of these in total across all carbs and also why 4 of 1 and 2 of the other in each kit so now I have 16 in total across the 4 kits!!,

As to the 1 very small o ring I have not got a clue

I should ad d I have bought also fron Gerben a Viton set of O rings as well  to replace these with and he supplies exactly what I would expect so I am a bit puzzled

Can anyone enlighten me please

Recently I  have got rather interested in Compression level testing on my 500 4 mainly down to trying to diagnose some running issues.

The Technical official Honda 500 Maintenance Manual indicates a "good level" of 170 PSI and anything under 140 indicating worn rings, poor valve seating etc

So off I went with my pressure tester and got 135 PSI on all 4 pots and started to panic, why are these levels so low compared to the Honda spec given that I rebuilt this engine only 2k miles ago with new pistons and rings and honed bores and all measured up to within official Honda sizes for a standard bore (56 mm) engine. Also the engine runs well with no smoke etc indicating worn rings or anything else wrong.

So why the large discrepancy.

I think there are a number of factors at play here

1) The compression tester I used was a fairly cheap unit   but like many commonly available that has a long length of rubber hose. This significantly increases the volume of air being compressed and can drive down the readings on these small capacity cylinders as the additional volume of air is significant compared to the swept cylinder volume.

If you look at the Honda maintenance book picture the  guy there is using a rigid metal small bore pipe connected to the gauge NOT a rubber hose. Also the Honda manual says nothing as to whether this is a dry or wet test but logic would assume dry as nothing says otherwise.

There is an excellent post on the USA forum about this that end up getting very technical but a really interesting read for the highly technical amongst us.

2) This was a dry test so I put some oil down the bores and the readings whacked up to 175 but I think I put way too much oil in there which was why such a jump. I thin I should have added just a few small drops !!

So now to my million $ question on these 4s what would be a sensible "good" level to get when using the type of gauge easily available and thet we all use.

My experience seems to lead me to around 135 psi on a dry test and that it does not rise dramatically on a wet test with a few drops of oil would indicate a pretty good condition engine. But that said I wonder what an acceptable lower level would be to indicate a top end problem.

Be very interested in others opinions here and how this thread develops.

A) Does anyone else have and readings from their bikes that may help?

B) Does anyone know what sort of increase is OK between a dry and a wet test?

CB500/550 / Inlet manifold o rings??
« on: May 05, 2018, 07:49:27 PM »
Just on a top end rebuild and confused....

The parts manual shows o rings for the inlet manifolds to head but my K0 USA seems to have not o rings but larger seals

I have sourced a full gasket set from DS but there are no sealing rings like this in the kit but loads of o rings


CB500/550 / My 500 4 is poorly
« on: April 28, 2018, 05:24:05 PM »

I have been trying to chase down a problem with my bike that started with cylinder 1 sounding like a tractor.

I have checked the exhaust and no loose baffles to be heard.

Next step was to check the plugs and oddly number 1 looks ok but the others all look a bit rich. This a bit odd as carbs have been fully rebuilt with ultrasonic cleaning and all new jets etc so not convinced I have a carb issue.

Next I checked the compression and am only getting 135 psi on all pots. Again a bit odd as she has had new pistons and rings but maybe my bore measurements were off!! On putting some oil down the bores compression climbed to 175 so that would seem to confirm a piston/ring problem. But again why would this cause this noise only from cylinder 1

I think I have come to the conclusion that I need to at least pull the head and block and check all over again.

But before I reach for the toolbox I would appreciate and ideas anyone else has having listened to the sound

As I said in the first sentence the issue is the rough sound from cylinder 1

I have posted here on YOU TUBE.

The first vid you can hear the rough sound and in the second I disconnected spark plug 1 so you can hear the difference.

CB500/550 / Carb rebuild kits
« on: April 27, 2018, 07:51:43 AM »
Anyone got any recommendations for decent quality aftermarket kits that won’t break my bank account

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