Re: '87 5KCSQ strospheric principles

[Dave Head <dhead@sundial.net>]

At 03:57 PM 10/2/97 EST, you wrote:
 So what happens when they fail from heat? Does all your boost get
>vented or does it just not vent at all??

It pops early and the car surges between like 13 and 9 psig...

 So far I've just soldered the
>resistor into the ECU. Lot's more stuff in that ECU than I expected. But Paul's
>mod there does stop the box from trying to retard the timing. Smoothes out the
>"Charlie Spring".

Hmm - hadn't heard about that one - I run a Charlie mit shim to 13.5 with
the Scott M. chip - stock 86 chip except overboost cutoff moved to the end
of the scale (1.95 bar). You run over 2 bar and you can overtravel the
transducer... BTDT. If you run that high go get multiple dryer hose clamp
and clamp that intercooler. With no retard on the boost watch carefully for
detonation. Also just above 2 bar on a stock K26 you are beginning to pump
mucho heat (turbo goes supersonic) which renders your intercooler and
horsepower gains largely ineffective. 

Talk to pdqship... You're entering the ragged edge of destruction with stock
components. This is how I spun the cold nut off turbo # 1 and ate a cold
wheel... 16 pounds is not a good bet over the long run on a stock K26...




********************************AUDI FAN***********************************
                                   EMCM(SW) Dave Head  
87 5KCStq 207K miles                1.85 or so... bar 
    qcusa #3442                 Maitland, Florida   
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