JayVee

Has anyone ever found any benefit from tieing these two ground points together with a heavy gauge wire? One's on the bellhousing and one's on the block. Both are conductive and have a huge mating surface but still, corrosion happens. I also wonder why these two points are seperate yet so close to each other. Does anyone know what each of these connect to?

mikemyers924s

Bump, this is a good question!

Techno Duck

They are isolated to minimize noise between the two circuits. One ground is for the battery, the other the DME. Any fluctuations in the DME grounding can cause all sorts of issues with the engine management.

Best thing to minimize corrosion is to clean the grounds, reassemble, then put a decent coating of dielectric grease over everything.

screamin94Z

Like mentioned, grounds should always be in a "star" pattern, where all bodies to be grounded come back to one common point. Do not connect them together! Connecting them together creates a loop, which increases the chance for electrical noise on the circuit and or harmful circulating currents by providing an additional low resistance path.

mikemyers924s

That makes sense. Thanks guys.