max. speed - 986 Forum - The Community for Porsche Boxster & Cayman Owners

JAAY · 07-06-2007, 11:05 AM

my 2.5 on the dyno hit the limiter in 5th 168mph. I know it is not a S, but I thought I would share. and no dyno numbers.. way too embaressing.

Frodo · 07-18-2007, 04:20 AM

I've got an 01 S, and have nowhere near maxed it out speed-wise. That's only because I can't afford a confrontation with the boys in blue. On those fairly rare occasions I've approached 110, I'll echo blue2000s: It feels wonderfully stable and is not particularly noisy. Feels like I'm doing 75.

Adam · 07-18-2007, 04:50 AM

The fastest I've had mine up to was an indicated 151mph with the top up. The ride and noise level was surprisingly civilized I thought. It still had some left but that was fast enough for me. My owners manual says the 03 S is good for 164 mph, but I don't think I'll ever see if it's true.

spark00 · 07-18-2007, 05:37 AM

Quote:

Originally Posted by JAAY

my 2.5 on the dyno hit the limiter in 5th 168mph. I know it is not a S, but I thought I would share. and no dyno numbers.. way too embaressing.

I don't take mine to track nor about to race anyone out on the streets. Great looking convertible with Porsche badge that can do about 150mph is good enough for me. Only time I really speed through is at on ramps to expressways. Love that cornering!!!

To get back to the topic, fastest I've had my 99 none S was 105mph.

JAAY · 07-18-2007, 05:42 AM

Why am I in quotes? Just Curiouse.. I've been up to 143 on the street. Took way too long to get it up there though.

Boxster02 · 07-18-2007, 09:11 AM

I took my 02 non S up to 145mph with the top down. Lots of turbulence and the front end felt very unstable. I was able to get my 02 Carrera coupe up to 175mph. That car felt much more stable and confident. All this done on public roads late at night. I would not recommend these speeds to anyone who does not have excellent driving skills.

CJ_Boxster · 07-18-2007, 10:27 AM

I've hit 136 in my non-S boxster with the top down.

07-18-2007, 11:06 AM

150 in BMW Z3, car felt stable, glued to the road even, felt like the car weighed 10 tons. 146 in 99 boxster, quiet, very stable. I guess it helps ive got the GT3 bumper and side skirts on it. Ran out of road basically for the box, the Z3 was cooling down fast so I had to stop, didnt want it to cool the oil too much. Ummm, I think I went 90 in my 02 jeep liberty renegade... don't do that.

Pat · 07-18-2007, 11:36 AM

Quote:

Originally Posted by boggtown

150 in BMW Z3, car felt stable, glued to the road even, felt like the car weighed 10 tons. 146 in 99 boxster, quiet, very stable. I guess it helps ive got the GT3 bumper and side skirts on it. Ran out of road basically for the box, the Z3 was cooling down fast so I had to stop, didnt want it to cool the oil too much. Ummm, I think I went 90 in my 02 jeep liberty renegade... don't do that.

Huh? The Z3 was cooling down fast so you had to stop? That seems very odd to me. Driving a car that fast puts a LOT of stress on the engine, creating a lot of heat. Regardless of ambient air speed, I can't imagine a car coolling off the faster you drive it. Hell, it seems to me it would get hotter at an accellerating rate, much like air resistance would increase at an accellerating rate.

blinkwatt · 07-18-2007, 12:10 PM

Quote:

Originally Posted by JAAY

my 2.5 on the dyno hit the limiter in 5th 168mph. I know it is not a S, but I thought I would share. and no dyno numbers.. way too embaressing.

How accurate was your dyno test? The unmodified 99' should only be able to do 150ish.

racer_d · 07-18-2007, 12:26 PM

I've hit an indicated 125 at the track. Why "indicated".. well.. Porsche speedos are not as accurate as they used to be. I have read (online) many reports that on the newer cars they can read as much as 10% too high. More often 5-8% high. So.. 125.. maybe that was only actually 112.. maybe it was dead on though.. Doubt it was reading "low" though

JAAY · 07-18-2007, 12:29 PM

As accurate as my speedo says. 168mph. Your right an unmodified boxster should only hit about 150... On the track/street. There is no wind resistance on a dyno.

blinkwatt · 07-18-2007, 12:49 PM

Quote:

Originally Posted by JAAY

As accurate as my speedo says. 168mph. Your right an unmodified boxster should only hit about 150... On the track/street. There is no wind resistance on a dyno.

Hmm,that makes sense. How much of that do you think is due to modifying your Boxster?

bannphilip · 08-08-2007, 08:23 AM

Interesting replies ! I was however talking about 150 plus and like the rest ofyou i have not approached that.

rockbox · 08-08-2007, 12:34 PM

Only been up to 110, felt great, want to do more, last car('90 maxda B2200 p/u )topped out at 85.

blinkwatt · 08-08-2007, 04:36 PM

Quote:

Originally Posted by rockbox

Only been up to 110, felt great, want to do more, last car('90 maxda B2200 p/u )topped out at 85.

Hahahaha I've spent some time in a B2200. Those things are BEAST, 0-60 in 16 seconds(no joke I timed it) and they look like micro machines. My friends Dad has one and we took it joy riding,Dukes of Hazard style one night,man that was unforgettable. I give it mad props though,we abused it,got air in it and who know what else and it still drives with 250k on it this day.