Main and Rod Bearings CM870

[Signature620]

What lube are you putting under the bolt heads? I’ve tried engine oil, lubriplate and red truck grease. The grease gives best results for me while torque-turning with a 3/4” gun.

As for pre-lubing, there’s no single way it has to be done. Most people don’t bother doing it at all. At my shop I have a hose made up to go from my air drum pump to port #5 in your picture. I throw the filter on dry and put 50L through that port. The engine has oil pressure straight away when we fire it up. It’s more about priming all the passages than pushing a heap of pressure through the system.