The Ford Barn

ScubaChief60 · 01-21-2025, 05:49 AM

Good morning,

Six months back, I installed aluminum heads on my 1935 85 HP Flathead.

It appears I have developed a coolant seep into one of the cylinders based upon the steam I am spewing at first start up.

After it gets hot the steam ceases.

No coolant is in the oil.

I have re-torqued the head nuts several times without success in stopping the seep.

Local NAPA suggested what they call gasket shellac. I have two bottles ready once I pull the heads.

Any recommendations based upon your experience would be appreciated?

01-21-2025, 05:49 AM	#1
ScubaChief60 Senior Member Join Date: Mar 2023 Location: Summerfield, NC Posts: 228	What head gasket sealant is the best? Good morning, Six months back, I installed aluminum heads on my 1935 85 HP Flathead. It appears I have developed a coolant seep into one of the cylinders based upon the steam I am spewing at first start up. After it gets hot the steam ceases. No coolant is in the oil. I have re-torqued the head nuts several times without success in stopping the seep. Local NAPA suggested what they call gasket shellac. I have two bottles ready once I pull the heads. Any recommendations based upon your experience would be appreciated?