10v -> 20v -> 20vt

[JShadzi at aol.com]

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
  >>