AirSpeed VW Community Forums

General Forums => VW Club Corner => Topic started by: 68IIIbuggy on July 23, 2005, 04:27:13 PM

Title: Cr/fuel Octane
Post by: 68IIIbuggy on July 23, 2005, 04:27:13 PM

My question is twofold:
1: How high a compression ratio can you use on a street car using 87 octane fuel?

2: If you were to assemble a 1641 using stock 1600 heads and no barrel spacers, what compression ratio would you end up with?

Title: Cr/fuel Octane
Post by: Bruce on July 23, 2005, 10:21:50 PM

The biggest two factors for #1 are cam and chamber type.  You need to describe both.

#2, what stock heads?  113?  311? 040? 043?  All have different chamber sizes.  What is your deckheight?  If the case was machined, your deck height has to be measured.