Quote:
Originally Posted by Sparky73
thanks for all the opinions. Seeing that I am in middle of figuring out my suspension rebuild, I guess I need to decide on the engine before I finalize suspension and brakes.
That being said from what I am reading. I am leaning towards a 3.0 or 3.2 for something with a little more power. I am not tracking but I do want a car that has some power.
With a 3.0 or 3.2 do I need to upgrade my suspension ?
Is there a marketplace to find used Porsche motors ?
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For track use you want HP, for street use you want torque.
Why? Because on a track you are mostly using the upper reaches of the rev range, this is where hp is developed best.
For street use you are mostly using the lower end of the rev range where torque is most efficiently developed
This was brought home to me back in the '70s when I had a '72 2.4L S then bought a Carrera 3.0 both are rated at around the same hp 190hp@6500 for the S 200hp@ 6000 for the C3. The S was a ball to drive on a track but tiring to drive around town, The C3 was still ok on track but far more enjoyable in town Because the S had 159lb-ft @ 5200 and the C3 188lb-ft @ 4200, The C3 currently has a 993 motor in it 283hp@6750 & 2330lb-ft @ 5500, even more enjoyable for both, but the suspension and brakes match the powerplant.
A stock healthy 3.0 cis motor will come in at ~190hp@6250 & ~176lb-ft @5500, S/M brakes will certainly be fine for street use in that light chassis, whether or not you need more suspension depends on how you drive and the grip levels from the wheels/tires.
The more you push a 911 the more it rolls in corners, w/ 185/70 all around the tires will run out of grip before the roll gets too bad, w/ wider stickier rubber and higher speeds the roll gets increasingly extreme. So it depends, but as a mentioned in the other thread you don't want to go beyond 20 or 21/26, depending on shocks and sways and local road conditions, or the ride deteriorats rapidly.