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<x-charset Windows-1252>With STOCK Id feel OK up to 7.3... the 6.9 is to keep the larger (1679) motors cool. Id want everything balanced... Jim, Russ?? Keith Keith Park Top Notch Restorations topnotch@nycap.rr.com 71 Squareback 65 Notchback 65 Squareback 75 Opel 87 Golf 88 Rx7 10th Anniversary ----- Original Message ----- From: "Jaranson, John (J.W.)" <jjaranso@ford.com> To: <type3@vwtype3.org> Sent: Monday, June 17, 2002 1:00 PM Subject: Re: [T3] Compression Ratio Recommendations > OK - I have received a pretty broad range of recommendations for my compression ratio. Everything from Berg's 6.9:1 to an engine expert here at work with VW experience recommendation of 9.0:1. I am planning to go with between 7.0 and 7.2 depending on what it works out given standard shim sizes. > > On a related note, what tolerance can I run on the CR given my stock rebuild? If standard shim thicknesses yield 7.1 on one bank and 7.2 on the other (remember my head chamber sizes vary by about 1 ml left and right), can I live with it? What are the consequences? Should I work the combustion chambers to get them closer in volume? It is only a 1.5% change. Should I worry about it? > > Thanks for all the advice. > > Later, > John Jaranson > '71 FI Auto Fasty (Jane) > '66 Square (Sophy) > About Half a Late Square (Organ Donor) > http://mywebpages.comcast.net/jaransonT3/jaransonT3/ (This is the new address for my website) > > > > ------------------------------------------------ > To unsubscribe, E-mail to: <type3-off@vwtype3.org> > For more help, see http://vwtype3.org/list/ > ------------------------------------------------ To unsubscribe, E-mail to: <type3-off@vwtype3.org> For more help, see http://vwtype3.org/list/ </x-charset>