-----Original Message-----
From: Jim [mailto:jim@928intl.com]
Sent: Monday, July 31, 2000 11:01 PM
To: 928
Subject: [928] Re: Wheels (torque converters)


the automatic trans test procedures for checking working pressure calls for
a warm transmission in drive with brakes applied - hold rpm at 1,400 - FOR
NO MORE THAN 5 SECONDS --- If you floor the engine against the brakes where
does all the energy go ?? the brakes are not sliding so no heat is being
dissipated there it must all be absorbed / diffused inside the transmission
and this is a transmission that in the opinion of Porsche needed some help
to handle the power of the S-4 - they incorporate a transmission safety
switch which retards the ignition timing -- think "reverse chip" - to reduce
the power in two of the four gearshifts . Also just when you think all the
adjustments to up shift full throttle have been made you find there is an
allen head bolt on the side of the valve body -on the sheet metal plate with
three slotted screws , turn it clockwise to up shift sooner ,
counterclockwise to upshift later then readjust control pressure be careful
not to over tighten the oil pan bolts it warps the pan causes leaks --
Jim Bailey
928 International
jim@928intl.com
79 928 5spd
80 928 5spd
68 911 5spd

> -----Original Message-----
> From: Gary Casey [mailto:glcasey@gte.net]
> Sent: Monday, July 31, 2000 6:43 PM
> To: 928
> Subject: [928] Re: Wheels (torque converters)
>
>
> I have a 5spd now, but used to do a lot of automatic transmission
> stuff.  The quickest way off the
> line is always to hold the tires at their maximum traction
> condition, different for some tires, but
> typically with some slip but just short of spinning (about 10%
> slip is the way it works out).  The
> easiest way to do that with a torque converter is to hold the
> brake and apply enough throttle so
> that the torque will be at that condition upon releasing the
> brakes.  This is usually short of full
> throttle.  It doesn't hurt the transmission at all.  Then as the
> car starts to roll, keep applying
> more throttle to hold it just short of excessive slip.  With a
> little practice a fast, clean start
> can be done very reliably.  The problem with just hitting the
> throttle is that the throttle lag -
> maybe 0.1 second - is added on to your times.  IMHO
>
> Moj wrote:
>
> > "Brake torqing it?"
> >
> > Do you mean sitting with your foot on the brake and acellerator at the
> > same time and then decking one as you let go of the other?
> >
> > Isn't that a VERY BAD THING(tm)?
> >
>
>