I do too, and I deal with gaskets/surface finish almost every day. Not from a machining end, but from the conceptual end. I could see improper surface finish causing a leak when up to temp, but you'd think the clamp load of the head bolts with the gaskets would be enough to seal the joint when coolant is just sitting there.That said, I have a hard time believing that coolant/water under zero pressure is leaking past the gaskets due to this.
OH, Ok...... I'm looking at it on the mini and can't really see the gasket material. All I could make out is the crush ring. I agree with Kyle and Jason's comments. I'm thinking something else is amiss here.You must have more posts per page than me. Stock does have the rubber material around each port.
I'm using JE ProSeal per IAG's recommendation. They are completely coated in rubber/silicone.
If this is a low power build, like you said, probably fine. Used main housings all the same. how's that possible, when they aren't even the same from the factory.I'm surprised the main clearances vary as much as they do. I'm sure it's fine but I'll be interested to see what your oil pressure is like once you're up and running. Also surprised at how tight the ring gaps are. IIRC Manley recommended like .022" or something like that on the pistons we used in my buddy's engine.
If the process is well controlled, documented, with the right tools in place, and quality control. They should be as good as any commercially available performance crate engine. At that rate though, a non-perfect process, is going to show itself in short order.He then talks about a 25-person team producing 10 engines a day, but now I'm led to believe the mistake was in the writing?
Agreed. Casting have irregular densities along their surfaces. A blasting process will indent 'soft' spots, but I too would be surprised if it were enough to cause the gasket to not seal.He then asked if I had anything to do with the build, when I said I am physically not there. I mentioned that I didn't think it should leak sitting on the stand with zero pressure. He said that "the head was basically made into a surface as similar to concrete, thousands of tiny little pores". I don't think he understands concrete pores (which are throughout an entire slab) vs surface dimples in a head, but I degress. It went on but in his defensiveness, where I haven't pointed any fingers, I told him to disregard.
That said, the head absolutely should have been surfaced properly, but with a coated gasket, I personally do not see it as something that should leak in this specific situation since the coating only has to seal the high points of the surface since there aren't actual "pores" from blasting. I say this because it does have me wondering if there is another issue in there, without pointing any fingers. It's worth a look into parts and installation procedures when redoing it with properly surfaced heads and new head gaskets (and why don't you have the stronger head studs on a closed deck block and 1000hp rods?).