Head gasket thickness - a few questions

[rick240zed]

I am trying to assimilate everything I've read in many threads - and having a bit if a hard time. So a few questions...

 

1. what is the OEM gasket thickness compressed?

I have read 1.25, 1.2 and 1mm; shouldn't be a big difference, but would like to know

 

2. do deviations from stock thickness result in tightening (or loosening) of the timing chain?

if so, is it an issue

 

3. what is felpro compressed

again I have seen 1.2 and 1mm

btw. is this the right Felpro for a F54/P90 combo  http://www.carpartsdiscount.com/auto/parts/catalog/nissan~280zx~81.html?3593=274533

 

Thanks,

 

Rick

Edited May 6, 2014 by rick240zed