RE: Boost -> HP??

[Sachelle Babbar <sbabbar@iris.nyit.edu>]

First, what are the fuel injection mods?
Second, I run 2.0 bar. It's very fun to say the least. You do have to know
how to use it and practice restraint. I could blow through first, second,
and the beginning of third, but I use it when I'm going already. When you
do that, you realize that this is what the car was made for. Remember, the
Euro model  with the kg(?) engine had 182 factory hp and 8.8-1
compression.

Third, the larger the number, the higher up the boost comes online with
the turbo (for kkk). Remember the k27 in the sport q? I'll find out
tonight what it's boost capacity was. I forgot how the A/R ratios work on
the turbos. Will tonight when I read throught the Automotive handbook.

****************************************************************************
*Steve                                             Sachelle Babbar
*'87  5000CS Turbo 5spd 1.3-2.0 bar             <SBABBAR@IRIS.NYIT.EDU>
*Cockpit adjustable wastegate, AudiSport badge
*
*Disclaimer:"Any information contained herein is based purely on my own
*personal experience and may not necessarily reflect yours. Use caution as
*your results may vary from mine."
********************************************************************************
                                                                               



On Wed, 28 Oct 1998, Lewis, Gary M wrote:

> Todd said;
> 
> > What car do you have.
> > 1.8 bar should give you around 200 hp I think. 
> > 
> I have a chipped 5sp turbo FWD.  If anybody can point me to a HP dyno in
> LA's beautiful San Fernando Valley, I'll end the specualtion once and for
> all.  
> 
> > Second, if you have the older MC with the k26, you are limited to
> > about 2.0 bar.  Any more than 1.9 to 2.0 and the Turbo is out of its
> > territory and blows Hot Air.  Wears out fast too.   For more a k24 will
> > help and Throttle response will get better too.
> > 
> I'd not heard this about the K24 turbo.  Better spool-up, definitely, but I
> was told that the K26 would handle more pressure.  Also, the K26 was easier
> to mod (to like a psuedo RS2) because the shaft was nearly twice the
> thickness of the K24, which was prone to schrapnel if you hung a bigger
> wheel on it.  The reason the 20vt's can handle 2.5 bar with a K24 was design
> changes in the intake and vacuum system, different from the 10vt's (hearsay,
> I've NO BTDT).
> 
> >   With a 3.0" free flow exhaust and Down Pipe 2.2 should be good for over
> > 250 but for this you will need some minor Fuel Injection mods.  
> > 
> I was told 300hp was the magic number for FI mods.
> 
> > Not sure exactly what.  BTW,
> > this is all in relation to the MC motor in which the chip you put in
> > will TRY to keep motor running safely and lnot too lean.  BUt with 2.2
> > bar it cant keep up.  I think Fuel Injectors must be changes.  Maybe
> > some other stuff.  At this point, I would as least upgrade to the IC
> > that is in the S4 or 91' 200.  It is single pass and much more
> > efficient.  Can probably find cheaper ways to go but this would bolt
> > right in I think.
> > 
> For 2.2 bar, I was told that new turbo and IC were almost mandatory. 
> 
> I'm not arguing with Todd, I'm trying to resolve these issues.  I have
> recently purchased an 88 5kcstq, and would like to make it faster (or at
> least as fast) as my 86 5kcst 5sp.  Due to FWD, I'm afraid to go more than
> 1.8 bar in the 86.  In the 88, I figure I can go to 2.2 bar with a fair
> margin of comfort.  If all I need is a K24 and 91 200tq IC (and a chip),
> great.  But I was under the impression that I needed a reworked K26 (or
> RS2),and a custom all aluminum single pass IC.
> 
> Thanks,
> 
> Gary Lewis 
> 88 5kcstq 0.0 bar 108km Pearl w/Fuchs
> 86 5Kcst 5sp 1.8 Bar 200km Sapphire
> TransGlobal Financial  (818) 384-7600
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> 
>