[urq] First of many urq questions (food for thought..)

[Justin]

Many consider the WR/WX as the less advanced engine of the 5 cyl turbo's;
and yes, it's management system is, compared to MC. But the potential for
high boost racing application is quite good since of it's low
compression....(consider, most high end racing and drag racing turbo engines
have compression ratio's of no higher than 8:1...)

A possible compromise would by an WR/WX with an MC or MC1 engine management
system (with boost control and knock sensors...), once the programmed boost
map differences between the two engines could be hammered out...(possibly by
an bleed valve to trick the MC into "thinking" it's running lower boost...)

Anyway, might prove to be an excellent system..

Justin

----- Original Message -----
From: "Graham Allan" <allan at physics.umn.edu>
To: <    >
Sent: Friday, April 02, 2004 5:13 PM
Subject: Re: [urq] First of many urq questions


> On Fri, Apr 02, 2004 at 04:14:17PM -0800, Buchholz, Steven wrote:
> > ... well, it is interesting to note your seemingly contradictory
statements
> > ... you didn't want to switch to an MC because of the complications ...
but
> > then you want to graft in a control system from a completely different
> > manufacturer!
>
> Well, yes, you're completely right - it is contradictary, but there is
> some reasoning behind it! APC is a completely standalone and
> not-very-complicated system - the car will function and drive without
> it. While installing the MC wiring harness etc could leave the car
> inoperable for some long period. Adding APC is really just an
> interesting opportunistic extra... if it is really feasible. Maybe it's
> not.
>
> Yes, the MC or MC2 is the better swap, but we would rather have the car
> on the road and driving with a WX than in pieces in the garage for the
> entire summer - my fear.
>
> I understand what you're saying, but as we now have the good WX engine
> sitting next to the car, I think that's what will be going in, with or
> without APC.
>
> > I too had considered the possibilities of incorporating the APC system
...
> > but after I went round and round with it I realized the same thing you
did
> > ... how do I determine what locations would be valid for the
installation of
> > the knock sensor?  There's another thing to consider ... the WX has
solid
> > lifters, which must be kept in proper adjustment to prevent setting off
the
> > knock sensor.
>
> Thats a good point, though it doesn't look terribly hard to adjust the
> valve clearances (in the Bentley manual - which I do so far despise
> with all my heart - it looks pretty similar to the fiat procedure,
> which I did last weekend).
>
> G.
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