[urq] First of many urq questions

Graham Allan allan at physics.umn.edu
Sat Apr 3 11:04:48 EST 2004


On Sat, Apr 03, 2004 at 08:05:51AM -0500, Groupbe at aol.com wrote:
> Graham,
> 
> The boss below and to the rear of the thermostat housing, near cylinder #2 
> works well for a knock sensor.  I too had considered the Saab APC system, but 
> decided to go with J&S Safeguard, an aftermarket programmable knock sensor 
> system.  The knock sensor's sensitivity can be adjusted, which allows you to 
> compensate for any normal engine noises, such as solid lifter clatter.

Great, I see it! On our car, that's used for mounting the massive a/c
compressor bracket. We do intend to retain the a/c (black car), but it
must be possible to co-opt the boss for the knock sensor, and still
mount the compressor somehow.

> Overall I am pleased with the system, and consider it one of the best 
> modifications I have made to my WX powered Ur Quattro.  With a modified CIS injection 
> system, I can run 20lbs. of boost on street gas.  The WX has plenty of 
> developmental potential and can reliably produce 300+ hp.  

Looks interesting too, sounds like this is a replacement for the urq
ignition system rather than controlling boost pressure directly?

Graham


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