bandit
Well-Known Member
I was getting a coolant leak from what I thought was the head gasket right above my starter so I pulled the heads. I did not see any evidence of leaking around the gasket but what I discovered is the previous owner took out the exhaust manifold studs and replaced them with bolts to install headers.(assuming it was for clearance). What I suspect is my problem is when the studs were taken out, the newly tapped bolt holes opened up access right through to the water jacket in the heads and may be leaking. I can see they applied some kind of sealant to the bolts before but I suspect this is where I am getting my leak from(great to figure this out after the head is removed). Does anyone know a good thread sealant to use on these exhaust header bolts? Is the orange high temp RTV ok to use?