[s-cars] RS2 compression ratio

[mlp]

This may hark back to the old discussion re: the switch to the latter MY's
metal vs. paper head gasket.  Another way of asking the question could also
be, "Is there any difference in piston part numbers?"  IIRC, Mihnea Cotet
was pretty certain the metal gaskets produced a significantly different (by
@ 1mm I think) "gap" vs. the older style paper felt.  Several shop mechanic
types, when asked by me, thought not. 

Last, personal experiences have produced a (fairly, i.e. +/- 3cc's or
better) widely disparate combustion chamber numbers, both as "measured" on
heads that have passed through my hands, as well as reported by other
parties.  The only conclusion I could ever come to, is everyone's burette's
all need recalibration.

mlp

>-----Original Message-----
>From: s-car-list On Behalf Of Dave Forgie
>
>As a result of my never ending search for S-car magazines 
>(originally for S4 and S6 articles), I have also branched out 
>and aquired many magazines with S2 and RS2 articles  One thing 
>that shows up consistently in the RS2 articles are statements 
>that the compression ratio of the RS2 engine is 9.0 to 1 (not 
>9.3 to 1 like the AAN).  I presume that if this was true, it 
>would be the result of Porsche installing (or spec'ing a 
>thicker head gasket).  Could someone with a working ETKA 
>confirm or deny the thought that the RS2 head gasket has a 
>different part number that the AAN head gasket?
>
>TIA
>
>Dave F.