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My ghia has 87mm and 041 heads and 110 cam and I have driven it 5k - 10k and I have not noticed any performance drop... I wish I could use that engine in my T3 but the case does not have the plug for the t3 oil line... Thanks! --- Jim Adney <jadney@vwtype3.org> wrote: > On 25 Jul 2001, at 7:32, Clint Tredway wrote: > > > How much of a power increase is there going from a 1600 to 1641? > The > > reason I ask is that I am weighing the option of adding 87mm > pistions > > & cyl while my engine is apart. > > Take a good look and you will notice that this is about a 2% > increase in displacement. If you buy the 87mm cylinders that can > be just dropped in as replacements for the stock 85.5mm ones > then the cylinder wall will be, by necessity, 0.75mm thinner all > around. > > In the end, this thinning of the cylinder wall will more than make > up > for any gain in displacement and the end result will be worse > performance than stock. This will not happen right away, but it > will > happen sooner than you will like. 5-10k miles is typical. > > - > Jim Adney > jadney@vwtype3.org > Madison, WI 53711-3054 > USA > > ------------------------------------------------------------------- > Unsubscribe? mailto:type3-request@vwtype3.org, Subject: unsubscribe > __________________________________________________ Do You Yahoo!? Make international calls for as low as $.04/minute with Yahoo! Messenger http://phonecard.yahoo.com/