Ford 4.6l Electrolysis

[alchemysa]

How does a anode work? By bolting a zinc block/wad/whatever-shape-it-is-in up to the frame. However you want to bolt it up is fine.

You need a liquid electrolyte (i.e water) to provide an electrical path between the the metal you want to save and the sacrificial anode. So you won't save a head by bolting an anode to the block or the chassis. If only it was that easy!

 

[alchemysa]

Its a bit of a pain to go in and re-tighten the head bolts a month or two after installing a new or reconditioned engine but really thats the best way to prevent the damage described in the OP's first post.

 

[Diamondpilot]

Its a bit of a pain to go in and re-tighten the head bolts a month or two after installing a new or reconditioned engine but really thats the best way to prevent the damage described in the OP's first post.

The tractor I just sold called for head bolt re torque at 50 hrs.

Chris

 

[MinnesotaEric]

Its a bit of a pain to go in and re-tighten the head bolts a month or two after installing a new or reconditioned engine but really thats the best way to prevent the damage described in the OP's first post.

In twenty years as a tech, I've never had to re-torque head bolts.

Railroad and industrial marine engines have re-torque specs but that is because some heads are so long in V16 applications and the defunct V20 (which had a tendency to twist crankshafts leading to an early retirement) applications.

Short heads should not need to be re-torqued. The longest head I ever encountered was Ford's 300 straight six and it has no re-torque spec.

That said, if a spec calls for re-torquing, do it.

Redline 1025 rpm, baby! The V20 engine in the video below is rated at 5000hp at 900 rpm. Maximum performance, industrial style.