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Messages - Fleabie
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« on: April 11, 2024, 11:10:57 AM »
I'm in the market for some felt washers for my carb rebuild.
Mine are all pretty perished. I need a full set for both the chokes and the main lifters.
Would anybody want to supply me or know where to get them ?
Thanks
Bill
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« on: October 27, 2023, 04:22:17 PM »
Sorry, I am being a bit dim  Your are right, I was reading it wrong. The way you worded it makes perfect sense now. So yes, I guess it’s stick with the blues or get a new crank (as you advised earlier in this thread). Thanks Bryan!
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« on: October 27, 2023, 03:18:46 PM »
I could be wrong here but I think it goes brown, black then blue in terms of giving increasing mains clearance. I got this from looking at the shell tables on page 32 of the manual on Ash's link: ( https://www.dropbox.com/s/1n3w5433jkph228/350F%20400F%20_4%20Shop%20Manual.pdf?dl=0) I think that if have (according to plastigauge) approximately a 0.08mm clearance at the moment with blue shells, if I went down to browns I could knock of 0.02mm bringing it down the clearance to 0.06mm. If that's right then perhaps I could go even further down and go for green main shells as this would bring the clearance down by 0.03mm from the blues to 0.05mm. Although a 0.05mm clearance is above ideal, its much well within the upper service limit of 0.08mm. Would anyone agree/disagree? If I am going to do this, it might as well be as best as I can get it :-)
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« on: October 27, 2023, 09:18:43 AM »
Thanks Bryan. Your help is much appreciated :-)
Would there be any harm in fitting brown shells? Would they be better in the long run as it would give a a tighter main shell clearance ? i.e. better oil pressure, longer life of engine etc?
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« on: October 26, 2023, 07:34:41 PM »
So the saga continues... slowly. I fitted and torqued down the <cough> "new" blue main shells with plastigauge. The first plastigauge I used (PL-X) showed a clearance>0.045mm (i.e. off the scale for that plastiguage type).So I then bought plastigauge PL-A and this shows a clearance of more like 0.076mm which means the clearance is at the service limit (0.08mm). So what to do next :-(
Originally I a was trying to source black shells, but I cannot find these for love nor money. I am beginning to wonder if black ones would give quite high clearances. So what would people do next ? Go the other way and get a set of brown main shells ones ? (seeing as the clearance is so large with the blues.)
TIA, Bill.
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« on: October 17, 2023, 06:24:23 PM »
Ok, thanks for the replies.. Does this mean they are unusable?
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« on: October 17, 2023, 01:42:22 PM »
Hi all,
Thanks for all the previous advice. It's all been very useful.
Well after much hunting I found some 'new' blue main shells. I could not get hold of the black ones for love nor money. So I have had to go up a size, which by all accounts is safe to do, as long as you run it in sensibly. I say 'new' because these shells are not in original Honda packaging but they have been carefully labelled with the correct part code in hand writing. I can also see the blue dot of colour on their sides, so that's very reassuring. So fingers crossed, they are what they have been sold as. I am going to clean up my case and check the shells with plastiguage.
The shell's look 'new', but they have horizontal marks across them i.e. perpendicular to the direction of rotation where you would expect to see marks on shells that have been used. Attached are 3 pictures of just one 'new' shell. Perhaps they have been tested in a crank case, and then found to be not suitable? But I would not expect a new shell to have any blemishes. The blemishes seem light enough to me but just want to check in with the experts :-) N.B. As before, these images greatly exaggerate how they look in real life ! Please bare that in mind when viewing the images. Is it normal for new shells to have these blemishes?
Thanks in advance!
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« on: August 24, 2023, 02:32:04 PM »
Thanks people, I would be completely in the dark without your help.
I thought that the photos may have been showing things worse than they actually are. So I took the crank and rods to a local engineer. They said that the journals are fine to reuse as they are. They suggested a polish of the journals would be a good idea. They agree that the shells are all "past their best" :-)
Out of interest, how did people arrive at me having and needing black shells? I am guessing that its something todo with crank case, webs & rod marks but after that, I am in the dark!
I have sent a few messages out to people advertising the black main shells I would ideally refit, but with no joy. Oddjob suggested fitting blue mains but I can't find these anywhere either. I can currently get brown and greens mains. Are these shells an option with some engineering?
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« on: August 21, 2023, 02:56:22 PM »
Thanks all! So I it looks like I need some blacks (or even blue) shells for the mains. Sorry, I should have put these pics up before: https://drive.google.com/drive/folders/1FGK0xmXN2eiM9KJ9NTA5tb3KN_PbPNkR?usp=sharingAs I hope you can see in the pictures, I think the conrod shells needs replacing as well, but these seem to be easily available. As for the black main shells, as you all said, rare as rocking horse sh... Had a good Google hunt. I did find this site for shells possibly. https://en.impex-jp.com/catalogs/moto/honda-other/cb400/cb400f-a-usa-6898/crankshaft-467977.htmlIf I need black shells, am I right in thinking I need "Rrg.a crank shaft 13315-333-003" ? I am not holding my breath but I have sent an enquiry to check availability, quantities etc. If it came to it, I would happily buy some extras and hold on to them for people seeking these in UK\Europe. I did see this site that will make bespoke shells. https://vandervell.co.uk/custom-service/ Could be pricey though. Has anyone gone down this route with a similar company? Any ideas for black main shells gratefully received :-)
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« on: August 20, 2023, 08:56:05 PM »
Thanks all. What an awesome response to my post. I really appreciate it!
I didn't see any evidence of water in the oil, but I did find something plastic in the sump pan that had been slightly mangled. I think it was a plastic support for the metal oilway tubes in the top of the cylinder head. I seem to remember one dropping in many years ago. Not good I know but I wouldn't have expected much damage from a plastic foreign object.
Will get new primary chain, cam chain, drive rubbers. The Kawasaki links are much appreciated. I'll leave the primary guides as is. Going to thoroughly check the primary drive and bearings.
From previous advice, the mains shells do need replacing and based on that, I am fairly sure the big-end shells do as well. I am pretty sure the crank's journals are OK though. Very shiny with the occasional light streak on a couple of them.
So what's the process for selecting the correct shells? I've read lots of posts on this site and gone slightly mad in the process. The Haynes manual is a bit vague to me and I find it hard to understand :-( Is there a better guide anywhere that says this is what you should do?
So what I have gathered so far (taken me hours!):
Lower crank case stamps are: CCCCC
Crankshaft Webs: 2A 2A 2A 2A 2
Condrods marked: 2C 3C 2C 3C
My bearings have absolutely ZERO colour markings on them :-(
Am I right in thinking that if I measure the main and big end journals using a micrometer someone might be able to suggest the shells I use? Or do I need to get some other information first?
I don't currently have a micrometer big enough so was considering buying one. Unless someone near Sheffield would let me use theirs :-) What accuracy does it need go to ? I have seen some with
0.001mm resolution and 0.003mm accuracy. Would this be sufficient or would peeps recommend I get it measured by an engineering workshop?
Thanks in advance!
Bill.
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« on: July 14, 2023, 08:01:10 PM »
Thanks all for the awesome advice. Unfortunately it has only lead to more questions.
Just digesting it all and doing some more research first before asking!🙂
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« on: July 12, 2023, 10:32:57 PM »
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« on: July 12, 2023, 08:03:26 PM »
Hi, I've read a lot on this forum about 400-4 crankshaft bearings. Its a bit daunting to be honest! I hope I don;t need to replace them. In the link below are some pictures taken this evening. Do people think these need replacing ? https://drive.google.com/open?id=1-4l59zFfLh2o1unInJ8F2s0PnhXnJJZs&usp=drive_fsAlso, I am fairly sure my primary chain needs replacing. When placed on a flat surface sitting on its side, the top links touch the bottom. I think this says "replace me"? On the primary guides, the Haynes manual says minimum thickness 5mm. Mine are 6.1mm. Do people think that is good enough to reuse? It might be academic as I cannot find new ones anywhere! Thanks in advance! Bill.
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