85 carrera much faster than 82sc

kodioneill · kodioneill's Garage

i own a 1982 sc . today i test drove a 85 carrera. why does the 85 seem so much faster that the 82? does 15 more horsepower make it seem that much quicker? is there a problem with the sc? dist advance, injectors, etc...

Superman · 02-18-2009, 04:27 PM

An '82 SC should clobber an '85 Carrera. Just ask any SCWDP member.

4flyboy · 4flyboy's Garage

Please!

Consider the source. This guy only has a couple of posts.

Geez.

Wait a second,,,,,,,,,Rats!

SCWDP members lie!

S.

trak ratt · 02-18-2009, 04:50 PM

Unless Euro SC '85s have 27 more HP. Depending on magazine, road tests showed about 3/10-4/10s secound in 1/4 mile. Out on the road or track very little difference. Were either cars targas?

Aurel · Aurel's Garage

I`ve never driven a carrera, but I heard that the EFI gives better throttle response than the CIS on SCs. Also, are you comparing stock to stock? A chip and cat bypass or SSI will give a big advantage to the carrera.

DanielDudley · 02-18-2009, 05:10 PM

Quote:

Originally Posted by kodioneill

i own a 1982 sc . today i test drove a 85 carrera. why does the 85 seem so much faster that the 82? does 15 more horsepower make it seem that much quicker? is there a problem with the sc? dist advance, injectors, etc...

Did you uncork the exhaust ?

kodioneill · kodioneill's Garage

yes, stock to stock. i'm thinking of buying another 911 so i road tested the 85 today. it pulls so much harder than the sc between 4000 and 6500 i was amazed.

kodioneill · kodioneill's Garage

Quote:

Originally Posted by DanielDudley

Did you uncork the exhaust ?

yes, i took out the cat.

Aurel · Aurel's Garage

How much advance are you running on your SC? On mine, 5 deg idle is not enough, but ~9 deg makes her wake up at higher rpms.

fastfredracing · 02-18-2009, 05:43 PM

I dont really think they are much faster, The carerra's power band seems more smooth. Last summer, I drag raced a bone stock 80 sc against my buddies chipped@ cat bypassed carrera, and he did pull away from me, but not by very much

kodioneill · kodioneill's Garage

Quote:

Originally Posted by Aurel

How much advance are you running on your SC? On mine, 5 deg idle is not enough, but ~9 deg makes her wake up at higher rpms.

have not yet checked the timing or the advance curve. the car is new to me and winter is on us hard up here.

Keith Perry · 02-18-2009, 06:01 PM

Also check your gas pedal and linkage all the way back to the engine. I'll bet you are not getting full pedal. Check it at the engine. Others have written about it. You could do a search, or perhaps someone else will give a better explanation.

dw1 · 02-18-2009, 06:30 PM

Here we go again...

Based on published road test results for US-spec 911SC and 911 Carrera 3.2:

Laneco · 02-18-2009, 06:35 PM

We have an 80 with an 85 engine (steve's cab) and my 81 CIS coupe (Butters).

Drive them both back to back on a regular basis and my butt-dyno confirms the above.

Assuming both are running soundly, an 85 Motronic tears up a CIS car...

angela (SCWDP #36)

RWebb · RWebb's Garage

CIS does not do very well at higher rpm.

It is just an older technology.

craigyirush · 02-18-2009, 11:45 PM

Quote:

Originally Posted by dw1

Here we go again...

Based on published road test results for US-spec 911SC and 911 Carrera 3.2:

Wow, big difference to a 100mph!

Geronimo '74 · 02-18-2009, 11:54 PM

Quote:

Originally Posted by Laneco

Assuming both are running soundly, an 85 Motronic tears up a CIS car...

angela (SCWDP #36)

'nuff said.

stevemfr · 02-19-2009, 01:17 AM

Quote:

Originally Posted by RWebb

CIS does not do very well at higher rpm.

It is just an older technology.

Your opinion does not qualify here. Only people with an objective attitude get to post on the virtues and drawbacks of CIS

Actually CIS does quite well at higher RPM's when set up properly. Yeah throttle response could be better, etc, but with a good exhaust, 964 cams, and set up well (which is not that difficult to do!), these cars are a blast!

Craigyirush - where are those figures from? The HP specs match nothing I've ever seen for either SC or Carrera (180hp and 207hp).

The U.S. SC - in stock form - is a somewhat castrated beast. The RoW 81-83 SC had 204hp. W/o a cat, you should be able to get close to that - and the difference to a 207hp Carrera won't be that noticeable. 20 some years ago I had a Euro Carrera w/231 hp and drove that back to back w/ a customers '87 U.S. Carrera (217hp ). There was def a difference to be felt, but it was in no way mind-boggling.

If the difference feels that great to you, it does sound like somethings not OK on your car.

livi · 02-19-2009, 06:07 AM

Random individual cars can probably differ more than between the model lines. At least for US cars. Larger difference between ROW cars generally.

Superman · 02-19-2009, 07:39 AM

It depends. Many of the SC's that I see these days have broken or missing throttle linkage bushings on the linkage plate that sits atop the engine. Replacing those two bushings probably gives a good 20% more throttle. Big difference.

Ignition timing makes a huge difference. My 3L engine is timed to 35 degrees full advance. This is about seven degrees advanced from stock spec. Makes a huge difference.

Several P-guys got together one day a few years ago to dyno our cars. There was at least one Carrera there, and my SC had the highest torque numbers in the group. I think it made something like 174 lb/ft at the wheels, which should be about 205 lb/ft at the crank.

Still, Bruce Anderson says to buy the newest, cleanest example you can. Porsche continually made improvements. Motronic is a better fuel system. 3.2 is a bigger number than 3.0.