prefered head sealant for alluminum heads

[Michael C Henry]

I seem to have an alluminum head with a slight crack in the coolant passage to outside near #6 plug. The crack may reach to the rocker area as I'm getting a bit of coolant in oil causing foam. I used silver seal and it lasted about a year. verry slight but not absolute. No compression leak into coolant. Any suggestions?

[xlr8or]

A new head. Water in the oil will cause too many problems to risk it.

[RICK LAKE]

Mike you are going to wash down all the bearing in that motor if coolant is getting into the oiling system. That motor will become junk. Coolant is NOT A LUBERCATE. If the head is Alum, send to a good machine shop and have it fixed and PRESSURE TESTED. A good welder should have no problem. After the head is repaired you may want to look into a coating company for sealing the coolant ports inside the head. Head repair with gaskets and parts under $700.00 if you do the work. Replacing an FE motor or rebuild price shock of about $5,000.00. Did you stay at a Holiday inn lately. Better to fix it correctly once that go cheap and get a major bill later. Rick Lake