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"DH" <dh@stargate.com> wrote in message
news:447c9920$0$24296$88260bb3@free.teranews.com...[color=blue]
> "Ray O" <rokigawa@tristarassociatesDOTcom> wrote in message
> news:d0c75$447bcbf3$180fead6$3785@msgid.meganewsservers.com...[color=green]
>>[/color][/color]
<snipped>[color=blue][color=green]
>>
>> Don't worry about full throttle acceleration because it is done as a QC
>> check before the car leaves the assembly line. The car is fueled, put on[/color]
> a[color=green]
>> dynamometer, put into gear, and accelerated at wide open throttle to[/color]
> redline[color=green]
>> for 2 minutes, slowed to idle, and driven off the line.[/color]
>
> Maybe every car should be delivered with its dynamometer report?
>
> And I'm guessing that a car that failed to deliver within some percentage
> of
> its rated horsepower would fail?
>[/color]

I don't recall seeing a hard copy dynamometeter report. Basically, the car
is driven on to the dynamometer rollers and hooked up to wiring under the
hood, the chassis is secured from underneath, the car is put back into gear
and accelerated until the proper a yellow light comes on, and when it turns
green, the car is braked, the wires under the hood unhooked, the car is
unclamped, and then driven into a tunnel with high pressure water nozzles
while people in the front and back seats look for leaks.

There was a red light next to the green light, I assume that light came on
if the car failed.

[color=blue][color=green][color=darkred]
>> > Page 376 of the Owner's Manual states:
>> > Avoid full throttle acceleration ..
>> > Avoid racing engine.
>> > Try to avoid hard stops during the first 200miles?????????????Why?
>> > Do not drive for a long time at any single speed, either fast or slow.
>> > Do not tow a trailer during the first 500 miles.
>> >
>> >
>> > Most of these make some sense except the HARD STOPS.
>> > Stopping does what to engine assuming one is using the brakes and not
>> > low gears?
>> >
>> > Joe[/color]
>>
>> The "break in" period listed in the owner's manual is conventional wisdom
>> from the times when vehicles actually needed break in. It remains
>> because
>> customers expect to see it in the owner's manual.
>>
>> The advice about avoiding hard stops is to allow the brake linings to
>> wear
>> enough to match the friction surfaces.
>> --
>> Ray O[/color]
>
> Is it also possible that the brakes don't deliver 100% until the surfaces
> are slightly worn?
>[/color]

I've never had problems with making the car stop on a dime right after
replacing the brakes, in fact, I always make a few panic stops right after
doing a brake job. The techs at GM dealers have told me that it is
important to make a few soft stops right after doing a brake job because the
pads need to seat, although I have not run across that myself.
--

Ray O
(correct punctuation to reply)