CB550k1 US Import - UK registration

[Oddjob]

2 looks really bad, 1 isn't great either. 3 and 4 looks about average but I'd change them if you're changing the others. Where's 5?

[juitz]

Might be a stupid question - but when ordering bearing shells, do you get a fell set (top/bottom) or is it just half?

[Oddjob]

You need to buy 2 shells for each journal, so 10 main bearing shells and 8 big end or conrod shells and you need to order the correct colour dependent on your crankcase and crankshaft sizes. How to ascertain those sizes is well documented on the forum, just search.

[juitz]

You need to buy 2 shells for each journal, so 10 main bearing shells and 8 big end or conrod shells and you need to order the correct colour dependent on your crankcase and crankshaft sizes. How to ascertain those sizes is well documented on the forum, just search.

That's what I was afraid of. This is gonna be expensive!

[McCabe-Thiele (Ted)]

Not much change out of £300.

[juitz]

Not much change out of £300.

Couple of pics of the crankshaft

Yeah, just costed up new set of crank journals at £170.

Had to go with mainly Greens as Yellow not available anymore. 4 x Green and 1 x Brown

Couple of pics of the crankshaft - nothing notable at least to me to indicate why some of the shells were in poor condition

[Oddjob]

I've got some yellows if your desperate.

[juitz]

Cheers Oddjob,

I want to measure again to double check but for the crank journals I'm at
1 x Brown
1 x green
3 x yellow

[Oddjob]

So you'd need 6 yellows?

[juitz]

So you'd need 6 yellows?

Yes that's right - gotta think of these as pairs!

Also, looking closely at the cases and noticed this nick on the top case at the clutch end journal (see photo). How big of an issue is this?

And why doesn't the middle slot on the top case (3rd from rotor end) have a lubrication hole or slot? It seems like the only one on the top and bottom cases?

[Oddjob]

Shouldn't be an issue, I think the shells don't cover the entire surface anyway. If they do just dress it down a little, won't affect the clearance unless you do the entire surface.

I have 6 yellows if you need them, £15 a shell inc P&P.

I just checked and have 12 yellow mains as it happens.

Still in sealed original bags.

[McCabe-Thiele (Ted)]

So you'd need 6 yellows?

Yes that's right - gotta think of these as pairs!

Also, looking closely at the cases and noticed this nick on the top case at the clutch end journal (see photo). How big of an issue is this?

And why doesn't the middle slot on the top case (3rd from rotor end) have a lubrication hole or slot? It seems like the only one on the top and bottom cases?

Weird optical illusion when you click on the photo to enlarge it slightly - if its the edge part you are talking about as long as the bearing sits in the shell I do not see that as an issue.

I noticed the lack of an oil  slot in the centre crank journal - it does seem odd.

[juitz]

Ok noticed something very concerning when offering the crank to check clearances with plastigauge using the old shells.

Please correct me if I'm wrong as I'm counting journal positions from the rotor side of the crank.

I noticed theres no clearance between the crankshaft and the 2nd crank journal positions and this has obvious signs of wear, especially on one side.
 All the other positions look to be ok with clearnace on both top and bottom cases?

[juitz]

So you'd need 6 yellows?

Yes that's right - gotta think of these as pairs!

Also, looking closely at the cases and noticed this nick on the top case at the clutch end journal (see photo). How big of an issue is this?

And why doesn't the middle slot on the top case (3rd from rotor end) have a lubrication hole or slot? It seems like the only one on the top and bottom cases?

Weird optical illusion when you click on the photo to enlarge it slightly - if its the edge part you are talking about as long as the bearing sits in the shell I do not see that as an issue.

I noticed the lack of an oil  slot in the centre crank journal - it does seem odd.

This is what I have just so I'm not crazy 🤣

Took another photo with the shell in but you should see the nick. I don't think it's an issue as the shell is stationary but I'm being careful as I can.

[Bryanj]

One journal has less clearance to reduce end float, cars have specific thrust washers but then they also have clutch end load