Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.


Messages - Topcat

Pages: 1 [2] 3 4
16
CB500/550 / Re: piston clearances CB550
« on: March 11, 2019, 04:08:07 PM »
Quote from: Bryanj on March 11, 2019, 03:13:23 PM
If you download the proper workshop manual from Ash,s aladins cave it will give you max/mim bore size plus max/min piston size. All my manuals are packed away so i can't do it for you

Of course, I understand. Unfortunately it looks like the aladdin's cave is having issues with the 550 folder either being empty or tree controls not functioning. I've found some workshop manuals elsewhere with min max bore plus min max piston sizes. However I'm either completely missing something or there is an error in the manual (probably not the latter). Is the standard piston diameter really that variable?

However if I assume the miss print is 58.47 then I'd say clearances are 0.01mm - 0.04mm, would I be correct in these calculations?


[ Guests cannot view attachments ]

Cheers
Topcat

17
CB500/550 / Re: piston clearances CB550
« on: March 11, 2019, 12:47:13 PM »
Quote from: Bryanj on March 11, 2019, 11:56:59 AM
Same clearance as std which is in the manual

Hi Bryan,

Looking at a few manuals (clymer, haynes and the service manual) they all speak about piston ring max side clearances, piston ring gaps standard vs max. However when I gave these to the machine shop they said these weren't what they needed and they wanted piston to bore clearances.

Could you confirm which clearances you were saying are in the manual?

Cheers
Topcat

18
CB500/550 / piston clearances CB550
« on: March 11, 2019, 11:33:53 AM »
Hi Guys,

Trying to find the piston to bore clearances for the following 0.5 oversized pistons.

https://www.davidsilverspares.co.uk/CB550F2-SUPER-SPORT-1977/part_326896/

Anyone happen to know the manufacturer of these? or better yet what the clearances should be?

Cheers
Topcat

19
CB500/550 / Re: splitting cases advice
« on: February 25, 2019, 02:50:52 PM »
Quote from: Oddjob on February 25, 2019, 02:29:42 PM
The part you require is 24212-390-000 and is indeed getting hard to source.

There is a NOS one in Sweden for 771 krona but no idea how that much is in £

Luckily I think I've managed to source one...well hopefully we'll see when it arrives :)

Still got to sort the other screw for the neutral switch assembly then clean everything up. But slowly slowly.

20
CB500/550 / Re: splitting cases advice
« on: February 25, 2019, 12:36:28 PM »
Quote from: Trigger on February 25, 2019, 12:18:40 PM
Thats a 550 dog Bryan, not a 500 ;)

you are on the ball yes its a 550. Are these just as rare i assume?


21
CB500/550 / Re: splitting cases advice
« on: February 25, 2019, 11:53:56 AM »
Quote from: Bryanj on February 25, 2019, 11:37:18 AM
Yup, next timp you will undo that screw just after removing sprocket cover!

Haha yeah, guess this is all a learning experience. Managed to get that one free finally but the one next to it holding the rest of the mechanism in place is nearly stripped :(


[ Guests cannot view attachments ]

Also managed to get a close up of the middle selector fork. Looks a bit knackered, assume I'll need to get a new one. Thoughts?

[ Guests cannot view attachments ]

[ Guests cannot view attachments ]

[ Guests cannot view attachments ]

22
CB500/550 / Re: splitting cases advice
« on: February 25, 2019, 10:07:06 AM »
Quote from: Bryanj on February 25, 2019, 09:45:33 AM
The drum should just slide out after removing neutral rotor(1 screw) drum detent and roller plus selector clips and pins.

Yeah it's that one screw that I a struggling with, will post a pic later but basically that screw is stuck and when turning the drum turns so not really able to free it.


23
CB500/550 / Re: splitting cases advice
« on: February 25, 2019, 08:54:07 AM »
Making progress on the disassembly got pretty much everything out apart from the rear drum gear (the side with the neutral switch the fixings are completely rusted solid and starting to strip). I've been giving it a good soaking with penetrating oil and trying to use an impact on it while holding the drum but obviously this isn't the most effective. Any better suggestions on how to remove these without destroying them?


Cheers
Topcat

24
CB500/550 / Re: splitting cases advice
« on: February 18, 2019, 03:32:51 PM »
Quote from: Bryanj on February 18, 2019, 12:09:08 PM
As a 500 always replace the primary and cam chains plus the rubbers in the promary cush drive, also inspect the selectors, especialy the middle one, carefully.

Will do, was planning on the chains but good to know about the primary drive cush rubbers. I'll replace these as well now. With regard to the bearings are these worth replacing and are they even available anymore? If not do you have any tips for cleaning them out and repacking or should this be avoided?

Cheers
Topcat

25
CB500/550 / Re: splitting cases advice
« on: February 18, 2019, 11:59:30 AM »
Cheers for the help guys, turns out it was just hanging up in a number of places and a bit more careful wiggling and the help of a friend and it came free. Still glad i didn't try and force it. Next step is to inspect the internals but need to clear a clean space for this bit so that'll be in a few days time.

Topcat

26
CB500/550 / Re: splitting cases advice
« on: February 17, 2019, 05:09:39 PM »
Quote from: Bryanj on February 17, 2019, 04:39:39 PM
There are a couple of bolts from the top down which frequently get forgotten about

On the following diagram which bolts are you referring to or are they not listed?

https://images.cmsnl.com/img/partslists/honda-cb550f2-super-sport-550-four-1977-england-crankcase_big00026138e12_0ee6.gif

27
CB500/550 / splitting cases advice
« on: February 17, 2019, 04:32:31 PM »
Hey guys,

Have been attempting to split cases for a while now as I want to inspect the internals as there was a fair amount of gunk in the sump and a lot of other worrying signs throughout the bike.

I'm having an issue and want to avoid rushing in and doing more damage to the cases. First I've managed to mostly break the seal between the two cases on the side of the oil filter but on the back side of the engine it seems to be completely solid. I've checked and re checked I've removed all the bolts and really want to avoid prying anywhere. I think it might be getting stuck on either the little dowel pin things (other places on the engine these have been really rusty) so soaking the thing with penetrating oil and using heat but nothing appears to be giving.

Any suggestions on what to do around this area to avoid damaging the mating surfaces? 

Edit: forgot to mention this is a CB550F2

Thanks
Topcat

28
Recommended Sources for Parts and Services / Re: Sleeve press near reading
« on: January 07, 2019, 09:46:11 PM »
Quote from: Bryanj on January 07, 2019, 09:35:36 PM
I would get that liner checked with a bore gauge as the inner still looks circular in the photo.

Yeah I will get that checked and think you're right but would the dent at the bottom cause any problems/ interference?

Cheers
Paul

29
Recommended Sources for Parts and Services / Re: Sleeve press near reading
« on: January 07, 2019, 09:26:27 PM »
So managed to grab a quick pic so you can see what I'm talking about. I'm also just in the process of splitting the cases which seem to be fine on at the front but hanging up at the back in other places the little dowels have been rusted solid so I'm assuming something similar going on here.

[ Guests cannot view attachments ]

Cheers
Topcat

30
Recommended Sources for Parts and Services / Re: Sleeve press near reading
« on: January 07, 2019, 05:20:04 PM »
Quote from: Bryanj on January 07, 2019, 03:15:16 PM
What bike? Trouble is you cant guarantee proper alignment and seating with a used sleeve.

It's a cb550f2 Basically a previous owner seems to have made a mess of the cylinder and head. So managed to source a new head and used cylinder, cylinder looks to be in pretty good condition the bottom of one sleeve which appears to be dented had I noticed this earlier I could have probably returned to seller but new baby and lots of stuff in boxes still I didn't manage to open it. The old cylinder sleeves seem to be in ok condition. I need to get a picture uploaded as it's right at the bottom so not entirely sure if its going to cause a problem. Will pop out later when I get a second.


Topcat

Pages: 1 [2] 3 4
SimplePortal 2.3.5 © 2008-2012, SimplePortal