ohsosikcivic

OK SO!

I am building a LS Vtec and my headgasket came in the other day... it says right on there 81mm... now im having the block bored .020 over to 81.5mm

should i have a 82mm headgasket or is the 81? I thought if you had 81.5 you were supposed to go the bigger size?

Help?

TwoLoudnproud

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nascarfan

im pretty sure you can run up to + 1mm with stock bore gasket, I have run 81mm headgaskets with 81.5mm bores on my old ls

Scott-EP

cosmetic head gaskets are just for looks. run without it and cut your losses

Smith-02

head gaskets aren't needed if your block and head surfaces are true. just a layer of copper spray