gasket surfaces on heads
07-21-2008, 01:08 PM
#1
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gasket surfaces on heads someone thought they should bead blast the heads and did even the intake and exhaust and valve cover gasket surfaces!!! My ? is should i be worried about it and get them cleaned up with a slight milling???? or what should i do
07-21-2008, 01:15 PM
#2
If they were in a small blast cabinet, like you would use in a small home garage, then it's probably not going to hurt the surface. If it was done by some sort of large commercial blaster, then a resurface might be a good idea. I have a small blast cabinet in my shop and even with fine sand, it wouldn't hurt a set of heads.
07-21-2008, 01:33 PM
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to the touch they are very smooth!! We have a realitively small cabinet, but i have never put heads in it. i dont think they are hurt but just wondering. Its like a fast blowoff to kinda clean the dirt off from the looks of it.
07-21-2008, 01:48 PM
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well the bottom is good but im having .015 milled off anyways!!!! i was just wondering mainly about the exhaust gasket surface since im using the gm stock metal gaskets
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07-21-2008, 04:16 PM
#10
If not, then there are also roughness gages that you can compare the surface too to determine what the finish is. I would think you are OK on intake (soft gasket) and exhaust. I would be more concerned with the head gasket but it sounds like you have the covered with the milling, just make sure whoever mills the heads can meet the surface roughness requirements.
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