Hello everyone.  Just trying to compute my compression ration with the motor i'm building.  I purchased the full engine gasket kit from MSA, which ends up being a "Stone" gasket kit.

 

 

I tried searching, but haven't come up with a thickness for the supplied gasket.  The manufacturer website is useless it seem.

Post the part number of the gasket, if there is one on it or the packaging.  Call MSA and ask them.  Measure the fire ring thickness with some calipers to at least get a before-compression thickness.  

 

Not much to go on here.  Stone head gasket from MSA.

Here is the gasket info I hoovered,  Ishino is Ishino Stone so 1mm and 89mm diameter.

 

Nissan Phred 1.14mm",   "89", "1.14"

Ishino Laz 1.00mm",   "89", "1.00"

Nippon Reinz 1.00mm",   "89.4", "1.04"

Nissan Phred 1.20mm",   "89", "1.20"),

Nissan Zya 1.25mm",   "89", "1.25"),

Felpro 1.10mm", "88.9", "1.10"),

Felpro 1.15mm Braap", "88.9", "1.15"),

Felpro 1.20mm Madkaw", "88.9", "1.20"),

HKS 1mm", "91", "1.00"),

HKS 2mm", "91", "2.00") 

Since MSA did not label it as a special gasket it's almost certainly between 1.0 and 1.25 mm.  You won't see big difference in CR in that range.

Thanks for the info Blue.   That's a huge help!  Also a bit disappointing as I am also in a bit of a pickle.  I unshrouded the valves on this head, and it seems I have have gone a bit overboard and I am outside the fire rings on one, maybe two cylinder.  Unfortunately the Stone gasket seems to have one of the largest fire rings too.  Grrr.   

Im going to have to put this info away into the library.

Edited December 1, 20159 yr by HuD 91gt