The Classic Opel Forums - View Single Post - Bearing shell size (Main and Rod Journal Bore Diameters)

GTJIM · 09-30-2007

I am sure it is the size of the big end of the conrod that is being looked for - the diameter that the outside of the rod bearing shells fit into. Likewise the diameter that the main bearing tunnels are linebored to.

Unfortunately, I have been unable to find an accurate specification for this size in any of my Opel documentation. Even the very comprehensive Holden 1900cc Engine Manual does not list this information.

This is extremely importany information that determines the correct "crush" that holds the bearing shells into place and makes them 'round'

Must be available somewhere!

09-30-2007	#4 (permalink)
GTJIM Old Opeler Join Date: Jun 2003 Location: New Zealand Posts: 5,686	Big End Bore Size I am sure it is the size of the big end of the conrod that is being looked for - the diameter that the outside of the rod bearing shells fit into. Likewise the diameter that the main bearing tunnels are linebored to. Unfortunately, I have been unable to find an accurate specification for this size in any of my Opel documentation. Even the very comprehensive Holden 1900cc Engine Manual does not list this information. This is extremely importany information that determines the correct "crush" that holds the bearing shells into place and makes them 'round' Must be available somewhere! __________________ GTJim Opel Owner since last Century! Copyright © 2000-2009 J D Henry All Rights Reserved Last edited by GTJIM; 09-30-2007 at 10:19 PM.