Bloody hell! That’s over an inch longer; if it screws in to the same depth or deeper than the old bolts then I would think that’s OK. The strange thing is why have they made them so long, perhaps they are used on other car engines like the Mk IV or Skyline. I can’t image any one needing to fit a 30mm thick head gasket. Providing they go in as deep as the old ones, I can't see a problem, providing they clear the camshaft at the top. Is there any one else on the forum that have used studs that can give some input.
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