compression ratio?

[robert weinberg]

the friend is shayne pavlic - some here know him. he knows his way around a 200 20V. he thinks it's too high and questions whether the 20 year old motronic ECU is robust enough to prevent detonation with such a high compression ratio. especially given that many of us have chipped cars.and that the MC 10V CR is like 8.4:1.


but given that overboosting and damaging the engine is a rarity, he's curious as to that long standing compression number.

Robby



________________________________
From: Henry A Harper III <hah at alumni.rice.edu>
To: robert weinberg <centaurus3200 at yahoo.com>; 200q20V mailing list <200q20v at audifans.com>
Sent: Wednesday, October 26, 2011 11:39 AM
Subject: RE: compression ratio?


It's a pretty well documented figure for the 3B. What authority source would
convince your knowledgeable friend? Owner's manual, service manual,
wikipedia, has to measure it himself? Does he think that 9.3:1 is too high
or too low?

http://en.wikipedia.org/wiki/List_of_discontinued_Volkswagen_Group_petrol_en
gines search for 3B

> -----Original Message-----
> From: 200q20v-bounces at audifans.com
> [mailto:200q20v-bounces at audifans.com]On Behalf Of robert weinberg
> Sent: Wednesday, October 26, 2011 12:24 PM
> To: 200q20V mailing list
> Subject: compression ratio?
>
>
> hi all,
>
> i'm pretty sure the CR is 9.3:1 but my friend, who is very
> knowledgeable about audis is having second thoughts on the
> validity of that number.