1975 CB400/4 Shells

[BrianC500]

Hi,

My crankcase is marked BBBBA. I need both Mains and big end shells. The crank has been checked and has minimal wear. Mains are 31.978mm, Big Ends 31.983mm. Can anyone tell me which would be the correct shells to go for please?

[Laverda Dave]

Hi Brian,

Try this link, it may help you, I had the same issue:

http://www.sohc.co.uk/index.php/topic,9538.msg68584.html#msg68584

There are also a few other links relating to bearing shells, use the 'Search' option on the specific forum, i.e CB350/400.

Dave

[BrianC500]

Cheers Dave. I'l let you know how i get on

[BrianC500]

I think I've worked this out correctly.....here goes

Mains measure 31.978mm, Big ends 31.983mm, Crankcase letters are BBBBA

Crankshaft is 1A 1A 1A 1A 1

Conrods are 2C 2C 2C 2C

I think I need Mains Green, Green, Green, Green, Yellow

Big ends Brown, Brown, Brown, Brown.

Could some very kind fellow forum member confirm that for me please?

[BrianC500]

Brilliant. Thanks Oddjob. I can go spend some money now. Thanks Laverda120 for the link.

[BrianC500]

I've found out that Yellow main bearing shells are now obsolete. Silvers are out of stock, cms only have one shell left. Can any other be used?

[Trigger]

You can just use the next size up

[Chris400F]

3 pairs of yellow available here and various other odd ones around (P/N 13318-333-003).
http://www.ebay.fr/itm/1-PAIRE-DE-COUSSINETS-VILO-NEUFS-JAUNE-HONDA-CB-350-400-FOUR-REF-13318-333-003/172177274003

[BrianC500]

Cheers Trigger I had a feeling that might be the case. Thanks for the link Chris. 25euros per pair, not bad. CMS have just upped theirs to 25 euros per shell plus 15euros carriage.  I'll see which way my brother wants to go.

[BrianC500]

Yellows arrived safely from France via ebay. Thanks for the link Chris400F. Only 3 greens to get from Mr Silver when they have them back in stock and I can get started.