[Jim Sims]

The four-bolt type also contain two "Spirol" type roll pins. Typically one needs to separate the flanges by driving something into the seam (where the gasket is); I use either a trimmed down, high impact, plastic tent peg or a hardwood wedge to avoid marring the flanges. If the engine/transmission is now down and resting on the jack you may want to consider raising it back up and resecuring the mounts before you start driving the CV joint flanges apart. I separate the 4-bolt CV joint flanges before lowering the engine.