Ok im building a gsr engine that was bored .5mm so its now 81.5mm, i want to know if i can use the stock head gasket or which one should i use. i read in some online stores that the stock size gaskets are for 81mm to 81.50mm, is that true????

 

yes a stock gasket is 81.5 mm

 

i thought a stock gasket was 81mm

 

the bore is 81mm the headgasket is acctually 81.5 you can use as much as a 82mm headgasket.

 

ok thanks!!

 

Really??? So LS and GSR headgaskets are the same???