10v -> 20v -> 20vt

[alan pritchard]

i dont think it would start on 6.5:1, let alone run....................
----- Original Message -----
From: <JShadzi at aol.com>
To: <mswanson at mswanson.com>; <ssgacc at yahoo.com>
Cc: <quattro at audifans.com>
Sent: Wednesday, November 21, 2001 3:25 PM
Subject: Re: 10v -> 20v -> 20vt


> I can't think of any street or practical application under 600hp where any
> compression ratio under 7:1 would be needed, especially in an Audi 5
> cylinder.  In fact, I don't even know how well a car with 6.5:1
compression
> would run, at all??
>
> Like Marc says, the highest compression ratio possible should be run for
best
> performance.  There is a marked difference between the MC-1 that is about
> 7.8:1 and the MC-2 at 8.4:1.
>
> I think a lot of those out there who complain about turbo lag in the MC-1
> cars are really complaining about doggy response from a low comp. motor,
the
> MC-2 has much quicker response, especially in transition from off boost to
> boost.
>
> As far a "Dumping in fuel", an engine will require a precise amount of
fuel
> in any given condition, Dumping by any means should be avoided, precisely
> metering a higher quantity of fuel would be preferred  =)
>
> Javad
> 80tq.com
>
> In a message dated 11/21/2001 12:20:16 AM Pacific Standard Time,
> marcswanson at mediaone.net writes:
>
> << > Isn't that part of the deal if you want to run insane
>  > boost?   Start with real low compression?  Runs like
>  > sh*t down in the RPM range, but when you get it wound
>  > up, it rips.  Dump on lots of fuel, maybe some water
>  > to keep it from detonating?  Ah, I don't know.  Anyone
>  > else?
>
>
>  I referred to Corky Bell's book for some information on this topic.  The
>  basic idea is to run as low a compression ratio as you *need* to.  In
other
>  words, yes.. you can run higher boost without detonation at lower CR to a
>  point...  He doesn't really specify what that point IS, but suffice to
say
>  that if the CR is too low you'll never leave the line!
>
>  -Marc-
>  87 4ktq
>  88 90q
>   >>