Carrera 1/4 mile time

[GSpreeman]

My fiance's brother asked me a strange question and I had no idea what the answer is. What can an '87 911 Carrera, unmodified do in a 1/4 mile?

[oldskhool]

not too positive but i think some where around 14.1

[masraum]

Yep, somewhere between 14 and 14.5.

Pretty quick really, but not the fastest out there either.

[KTL]

And I think you gotta abuse it to get that low-mid 14 sec. time.

Meaning, rev it to 3K plus and dump the clutch. Not something i'd recommend doing on a regular basis.

People say it all the time, these cars aren't drag racers (unless built for just that purpose).

[1987C1]

With my stock 1987 Carrera I ran 14.8 @ 95.2 MPH at the track.

This was with a very, very clutch friendly start (also my first time at a 1/4 mile track).
My 60 foot times were not all that great, so mid 14's if you would
dump the clutch?

[Mike the mechanic]

I got 14.10 at 98mph, dumping the clutch. That's a bone stock 86 Carrera. I think with a G50 car, it can be 13.9. No, 911's aren't drag cars, but they can take a beating, and perform well in any race. This is quite fast for it's time.

[Wil Ferch]

1984 Car and Driver car...for what it's worth with the abuse they give cars...did 13.9 @100 mph... not shabby.

--Wil Ferch

[RickM]

Cool crisp day or Humid August day?

[Jeff Alton]

Just checked my owners manual for my 84. 14.7 sec 1/4 mile. However, Porsche is notorious for under rating the performance of their cars! I am feeling like I need to ring her out, so I will go plug the G-tech in one of these days and give it a go.

Jeff

[emcon5]

In 84 Car and Driver got 13.9 @ 100mph.

Tom

[KTL]

From 1987 Owner's Manual:



Any car that dips into the 14's would be considered a "quick" street car in my opinion. Plenty fast enough to get you into trouble on the street.

911 suffers a bit from a lack of bottom end torque so that's why you gotta thrash it off the line to get the best time. Not like a V8 with all that grunt in the low rpms. At least the 911 has all that weight back there to hook up and go.

[masraum]

Yep, traction for acceleration is phenomenal, but actually a little too much, I think for good 0-x timing. I have once or twice experimented with a hard launch just to see how it works, there is either clutch slippage or the rear end bounces all over the place. I think acceleration runs would actually be best done on smaller less sticky 15" rubber so instead of wheel hop you get a little spin.

[Adman]

Originally posted by KTL
From 1987 Owner's Manual:

My 1987 Owner's Manual:
Max Speed......................... 146mph
Acceleration 0-60mph...........6.3 seconds
1/4 mile with dead start.....14.7seconds

Stabilizers........911 Carrera: Diameter 22mm front, 20mm rear

Hope I just got the slow owner manual. Not the slow car!

[MRM]

The 1984 Car and Driver article also said 0-60 was 5.3. I've never seen any other test report come close, though, so I take that with a grain of salt. If you were willing to sacrifice a little clutch I think mid to high 5's wouldn't be hard to replicate.

Someone on the board has a Carrera with a chip and exhaust and was claiming something pretty close to 5 flat before his clutch went out.

[masraum]

I have seen several tests for the 3.2L cars that range from 5.2 - 6.1, so I figure mid to high 5's.

Top speed for a 3.2L with US G50 gearing is gear limited to somewhere between 148 and 153. 915 cars will be a tad different due to different gearing, turbo-look cars will be a tad lower.

[lukeh]

Someone please help me out here. The owners manual stats show the Turbo beating the Carrera to 60mph by .6 seconds. However, it then shows it beats the Carrera in 1/4 mile by only .5 seconds. Seeing as how 60mph comes up before the 1/4 mile, doesn't that have to mean the Carrera is gaining on the Turbo after 60mph. I just can't believe that. What am I missing?

[masraum]

Could be the difference in gearing, but I would think the time to shift would make up for that since the Carrera will have to shift twice to the turbo's once, weird!

[Mike the mechanic]

Lukeh, time to speed and time to distance are two different measurements. Look at the trap speed of the two cars. The Carrera may be 100 mph, at 14.0 seconds, and the 930 MAY be 106mph at 13.5 seconds. Think about it this way, the 930 reached 106 faster than the Carrera reached 100. That means that the 930 would reach the Carrera's 100mph speed in 13 seconds. So really, the difference is great.

The above 930 numbers are strictly theoretical, I do not know the 930's 1/4 mile and trap speed.

[masraum]

There you go, that makes sense.