i have a B18A1 with B16 pistons and a pretty much stock LS head. I am looking at Cometic head gaskets and they make 81 MM bore and 81.5 MM bore gaskets. i have an over bore of .25 inches making my bore 81.25. Which gasket do i get?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by timm099 &raquo;</TD></TR><TR><TD CLASS="quote">i have a B18A1 with B16 pistons and a pretty much stock LS head. I am looking at Cometic head gaskets and they make 81 MM bore and 81.5 MM bore gaskets. i have an over bore of .25 inches making my bore 81.25. Which gasket do i get?</TD></TR></TABLE>


inches? Damn, thats like an 87mm bore....crazy awesome. Seriously, you can use either but I'd probably use the std 81.00mm size.

 

i meant getting bored over .25 MM, thats like .010 inches. but would the gasket be getting in the way if i got it under my bore size

81.25 MM is my bore now

81.00 MM and 81.50 MM are my choices

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by timm099 &raquo;</TD></TR><TR><TD CLASS="quote">i meant getting bored over .25 MM, thats like .010 inches. but would the gasket be getting in the way if i got it under my bore size

81.25 MM is my bore now

81.00 MM and 81.50 MM are my choices</TD></TR></TABLE>

Yes, I realized that you ment .25mm overbore and the piston doesnt come "out of the hole" so it wont get in the way. Plus the top of the piston is about .75mm smaller then the size of the bore (or the bottom of the piston). Also, if Im not mistaken, honda recommends using the 81.00mm head gasket with the .25 overbore.