arenared

You don't really have to fry the clutch every time. What I do is just use peak G's in first gear. It's very repeatable, and you can do this practically anywhere. This is probably a better measure of peak torque than HP, but will tell me if I'm going in the right direction. I've been collecting datapoints at all sorts of temperatures and gasolines/octane. I use mine all the time to check tire pressure, alignment, swaybar settings, tires, brake pads, etc., etc.

You can check out where I mount mine over in the G-Timer thread from a couple days ago.

mdillian3690

So how much slower whould you say a C2 Tip is? 0-60mph? 300hp!

snaproll

Porsche's website claims 0 - 60 of 4.8 seconds for a manual 997, and 5.2 seconds for a tiptronic. The differential is probably similar for a 300 hp car.

mdillian3690

Tiptronic, that much slower?

washington dc porsche

No "save it for the track" sermons or the "Porsche is not a 1/4 mile track car" rule?

The hardest part is the launch, IMO which I haven't had time to practice.

nycebo

How can it measure tire pressure and brake pads without sensors?

EDIT: forget it. you probably mean that you use the G-timer to measure performance after you have changed pressures, tires, etc. My fault. Ignore me.

ElTorrente

EVO magazine tested a 3.4L C2 at 4.6sec 0-60.

My car, a 99 C2, has 17" wheels and it feels very fast from a stop (or a roll, for that matter). People don't realize how much of an effect wheel weight has on peformance.

It is much more than just the extra total weight of the wheels, it's the increased Rotational Intertia that basically robs you of your torque. Not only that, but when you "upsize" your wheels, the weight is concentrated further away from the rotation center than before, and increases the effects even more. Same goes for tires- some tires weigh considerably more than others of the same size. These extra few pounds are located far away from the rotation center, so the weight effect gets really amplified.

Keep this in mind when you are blinging down the road in your 19's. People think that a few pounds don't matter, but they really do!

gravedgr

Unless I'm at the strip, I'd rather look good and be a quarter-second slower.

ElTorrente

I agree - but actually, I would want to have both.

I'm going to get some 18" wheels in the next few months, but they have to have all the goodies: looks, strength, and light weight. Of the types out there that have them, I'm leaning toward the BBS line and they are right around 20lbs or so.

Carrera Mike

AMEN!
I used to tune helicopter main and tail rotor blades. 2 ounces of balancing washer(weight) equates to several lbs of weight when rotating at only 298rpm