Re: New Head Gasket Seeps Antifreeze

Posted by Jack Vines On 2015/1/4 9:59:00

Old studs and nuts, old cast iron head surface can develop such a rough finish that much of the torque is absorbed by the friction, thus not generating enough clamping force.

I use a thread chaser die on all the studs and a tap through all the nuts. Then, 220-grit aluminum oxide sand paper to lightly polish the bottom of the nuts, use a thin hardened washer and fastener lubricant under the head nuts.

This insures the torque reading turns into clamping force.

jack vines