I'm ready to drill and ream a main bearing journal hole. The hole will be through to different metals at the same time. The engine frame is cast iron and the journal cap is brass. The part line splits the through hole bearing surfaces with the center directly on the part line. My concern is that since the metals are dissimilar and have different strength properties the drill or reamer will wander into the softer metal and spoil the hole being drilled.
Should I have a concern that this could happen or should I just bolt the brass bearing cap to the cast iron frame and drill the hole for the bearing shaft. Not fearing there should be be any bit wander to spoil the concentricity of the journal hole.
If I should have concern what do I do to solve the problem before it happens??
Your help will be greatly appreciated.
Should I have a concern that this could happen or should I just bolt the brass bearing cap to the cast iron frame and drill the hole for the bearing shaft. Not fearing there should be be any bit wander to spoil the concentricity of the journal hole.
If I should have concern what do I do to solve the problem before it happens??
Your help will be greatly appreciated.