Honda-SOHC

SOHC.co.uk Forums => CB350/400 => Topic started by: 400 Cafe Racer on July 21, 2021, 10:04:29 PM

Title: Main Bearing Shells - Yellow is thinest on chart - Red is not mentioned??
Post by: 400 Cafe Racer on July 21, 2021, 10:04:29 PM

Can anyone establish where the RED main bearing shells fit into Hondas Main Bearing grid chart please. ?

RED is not listed on the main bearing chart, but is on the BIG end bearing chart.

Was it introduced because some tight fitting could still be experienced using Yellow, so a further undersize was introduced ? Just my speculation.

What is the difference between the Yellow (not sold) and the Red stocked by D Silver and why did Honda not chart the Red ??

Has anybody seen a Yellow. ?

Measuring the shell thickness: - Brown is 1.490mm, Green is 1.485 and Red is 1.475mm.  There seems to be a gap at 1.480 Is this the Yellow size. ? (These are removed shells passed to me by PO and some from my present inspection)

Appreciate your thoughts and points of view. ;)

Regards

Dennis

Title: Re: Main Bearing Shells - Yellow is thinest on chart - Red is not mentioned??
Post by: McCabe-Thiele (Ted) on July 21, 2021, 10:29:18 PM

Interesting observation - the manual lists 6 part numbers for mains shells.

I previously found the following colour codes on the internet - I am not 100% certain they are correct.
Blue              13314-333-003
Black            13315-333-003
Brown           13316-333-003
Green           13317-333-003
Yellow           13318-333-003
Red              13319-333-003

The colour codes I have listed are based on mainly DS site & elsewhere

DS lists Red for mains as 13319-333-003