Zumbera

94 993 c2 cab owner.

What is the ideal RPM to shift from 1st to 2nd for optimum acceleration. I dont do any racing and just drive on the street!

BTW, how slow can u go in third or fourth without damaging the engine. And does the engine get damaged at all if you go slow in the higher gears. I know, I know, you have to zoom these cars, but then I have soooo much stop and go traffic....

Cheers

Zumbera

Flying Finn

[quote]Originally posted by Zumbera:
<strong>...What is the ideal RPM to shift from 1st to 2nd for optimum acceleration...</strong><hr></blockquote>

Redline! (naturally, this goes with other gear changes as well) <img src="graemlins/burnout.gif" border="0" alt="[burnout]" />

Jim Sullivan

Yes, PCars are one of the few street cars set up to perform best at redline. There are lots of "high performance" cars out there from others that do better if you shift earlier than redline, but not your Porsche.

pmcgrath

My understanding is "red lining" in 1st gear is a <img src="graemlins/nono.gif" border="0" alt="[nono]" /> Is this correct?

993RS

Phil,
Other than using up a lot of rubber, I would not see why... Having said that, I usually only go up to about 5000 in first when accelerating really fast, but do go all the way now and then. BTW: I used to have a rev counter on my old SC which had the 7000 rev mark at 12 o'clock. This helps when *redlining*. Anybody have an idea where one can be found?

Flying Finn

RS, I've been wondering about that, it would be so easy to make gauge that has red line in 12 o'clock.

Everyone who wants to go fast should always go up to redline (if driving a Porsche, -57 Vette could be a little different).

BTW, when we really 'stretch the legs' with my -75 SC, we go all the way up about 7500 and she loves it! <img src="graemlins/jumper.gif" border="0" alt="[jumper]" />

993RS

Yes Kim,
but Ruf used to have one that was set up like that to begin with, so that the text in the face did not stand on its head...

E. J. - 993 Alumni

Contrary to evident popular belief, I feel that my car stops making usable power at around 6400 or 6500 rpm, so that is where I try and shift - even at the track. Of course I am a little late sometimes though...



Might save a tiny fraction of wear and tear too, you never know. Of course, When I am chasing Greg, I bounce off the limiter (I never catch him though ).

E. J.

Phil

EJ,
Your tach is reading zero, has is your speedo?..what gives?

E. J. - 993 Alumni

She's sleeping peacefully Phil.



E. J.

993RS

There! See what I mean! Twisting the rev counter makes the figures look funny... I want a rev counter which looks right and is twisted! <img src="graemlins/nono.gif" border="0" alt="[nono]" />

Phil

EJ,
ahhhh...My wife just "caught" me outside, looking at my car!....."what in the hell are you doing out here?"......my comment of "watching her sleep" did NO good!!!!!!!!
I do have some good news to report!, My brotherinlaw bought a corvette Z06 today!..that really paves the way to Me doing some "de" events! I must say, that the brakes on a corvette even the "Z06" are PUNEY!!!!!!!! <img src="graemlins/beerchug.gif" border="0" alt="[cheers]" /> <img src="graemlins/drink.gif" border="0" alt="[cherrsagai]" />

993RS

I care, because I am a perfectionist...
And I used to have one on my SC which was right...

rcwelch

This is for the Flying Finn,
I bet you wish that you still had your "75SC", Its a one of a kind being that the rest of the world saw them in 77.
rcwelch
95 993

George Helser

Zumbera,

Back in the 80’s, the common amateur misconception circulating around the PCA was to shift the engine just after peak power. I would shift at redline and win the trophies. My friends would warn me I was ruining my engine. My competitors accused me of modifying my engine!

As for rotating your tach: In competition, I am sometimes too focused on where I am driving to watch the tach. In that case the 993 rev limiter tells me when it is time to shift!

In summary, shift your 993 at redline for max performance.

Regards,
George
In sunny AZ