RE: K24 finally installed in 1986 5000cstq

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

I haven't read your entire post, but what I can tell you, having had an 84
kh with a K26 and 8.3-1 compression, I would be very intersted in seeing a
more powerful stock engine return to that configuration.

The kh had a wonderful feel with the additional torque, albeit through a
slushbox and took very well to boost mods. Good bottom end and wonderful
top end due to the higher rpm turbo.  A marvelous feel to the power
curve;unlike any other car I've been in. Exotic or not. 


BTW: for all turbo owners, especially higher compression turbo owners,
insulate the metal knee between the airboot and the intake side of the
turbo. It made a little difference on my mc, but doing so on the higher
compression kh *noticeably* boosted midrange.

I originally did it with a lot of layers of reynolds foil and wrapped it
with heat resistance tape. Probably 20 ft worth. Took about 5 minutes to
do, as there also was an easy way I found to do it. I currently am using
foil duct tape, available from home depot. Comes in a roll and is self
adhesive. It's in the outdoor ducting section.
****************************************************************************
*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 Mon, 22 Nov 1999, Lewis, Gary M wrote:

> Eric said:
> 
> > On 11-18-99  "Kaklikian, Gary" Gary.Kaklikian@Compaq.com wrote: >
> > >We just put the K24 from my 4000 on my '86 5000, which is stock except
> > for 
> > >TAP chip, wg spring, and bypass valve. I agree - what a great improvement
> > in 
> > >low-end, midrange, smoothness, throttle response, etc! Seems like a new
> > car! 
> > >Conversely, the K26 works MUCH better on my 4000 (dual knock sensor 
> > >high-compression motor) than the K24 did.
> > 
> > My engineering nature wants to understand why there is a difference in 
> > bahavior for the k24 vs. k26 turbos with the MC-1 vs. MC-2 engines.
> > 
> > The lower compression ratio, single knock sensor (MC-1) benefits from 
> > quicker spool up using the k24 in place of the k26. I have not 
> > experienced any downside from using a k24 in my 5000cstq (MC-1) at 1.8 
> > bar maximum boost.
> > 
> > What performance characteristics improve when using the k26 in place of
> > the 
> > k24 in the dual knock sensor, high-compresqsion motor (MC-2)?
> > 
> > Does the higher compression ratio of the MC-2 produce hotter exhaust
> > gasses 
> > that possess more energy to spool up the k26 sooner than the MC-1 can?
> > 
> > What does the boost vs. rpm data look like for the various engine/turbo 
> > combinations?
> > 
> Did anyone answer the K24 vs. K26 in a MAC-14/MC-2 car??  As I now have the
> latter, I was curious.  I'm having delusions of 2.2 bar, single pass I/C,
> 2-piece EM, and a stock RS2 turbo on my 1990 tqa (or saying screw it and
> buying a 1991tqa...).
> 
> 
> > Gary M. Lewis
> > 1990 200tqa Silver/Platinum 146km 1.8 bar P6000 SVR, Bilsteins, BPV
> > 1986 5kcstqa Sapphire/Platinum 180km Stock
> > 
>