996scott

I have used search and didn't find a whole lot. I know the HP went up from 95-to 96. I am talking about the C2s. No change in body other than the basket handle right? How about the interior. Anything really change in the 4 yrs? Also, anyone recommend a good 993 book? Something like Adrian Streather's book Porsche 911 Enthusiast's Companion for 1988-94, but only for the 993. Thanks

Matt Lane

Adrian Streather does in fact have a 993 dedicated book. IMHO, it's a funky read, but has a lot of info like what you're looking for. If you post a wanted ad, you may find someone looking to unload a copy.

Best,

Matt

Matt Lane

A couple of thoughts:

- The C2 was only offered between 95 and 97 (model years). The only traditional 2WD car for 98 was the C2S, albeit not in a standard body.

- The most substantive changes between 95 and 96/97 were OBDII diagnostics, Varioram intake, and revised rear suspension pieces.

As you point out the Varioram does add a bit of horsepower (and some complexity).

The OBDII doesn't add much, besides throwing a Check Engine light when the SAI ports are clogged. You should do a search on "SAI" and you can form your own opinions of how much of a nuisance this is.

The revised rear suspension eliminated rumoured handling instability. Depending on who you ask, this is either a really big deal, or a tempest in a teapot. Again, doing a search will yield a lot of input from 95 owners with direct experience.

Best,

Matt

H.H.Chinn

The interior of the C2S has aluminum gauge rings, CarreraS is imprinted on the face of the black face tachometer, black pebble(basketball) embossed leather inset panels in the dash and on the door panels. Exterior diffferences are about 1-1/2" extra width on each rear fender. I might have an extra copy of Adrian Streather's 993 book, PM me if you are interested in it.

Ed Burdell

Wiring harness was updated between '95 and '96 onward, right? The '95 was subject to a recall on this, I think. And wasn't there something with the steering rack that changed after '95? I recall reading somewhere here that if you lower a '95, you have to mod something else to avoid bump steer? I may have this all wrong, as it's been awhile since I read it.

Re C2S, mine didn't have the aluminum gauge rings, but it did have those inset panels. I thought they were vinyl, however - hard to tell with the embossed texture.

NaroEscape

Bit of useless trivia: 96 and 97 are basically exactly the same, but there is a small interior difference from 96 to 97 - the 97 has a little light right above the ignition key...96 does not.

Opo

My 98 c2s did not have aluminum gauge rings either.

jimbo3

Different ECU in 97 and 98 that can be "chipped".

RonCT

Streather's book is a must - he lists each year and every part that was changed during the evolution (just as his 964 book did).

Keep in mind the C2S non-standard instrument faces do not have Carrera S on them (ie: Aluminum or painted).

Falcondrivr

Of course it all goes out the window with cars in the changeover months. My July build '95 is basically a 96 without varioram. No basket handle, revised rear suspension, not covered under the harness recall, and has an obd2 connector for the obd1 system.
It's Porsche. The specs are more guidelines than rules.

Bill Verburg

first lets deal w/ the suspension
here are the relevant parts of the TSB that describes the suspension changes





some '94s were re#'erd as '95s these are id'ed by option M718

The'94 versions had 964 engine compartment heat set up
like this


true '95s had engine compartment heat w/ a shift valve and fresh air intake as used on the later vram versions
like the heat on this '97


DME
all '94 & '95 and all RoW '96-98 normally aspirated 993 are 55 pin OBD1
all US '96 -98 and all tt are 88pin OBD2 compliant, the '96 US DMEs were a 1 year only version w/ twin chip setup that is not programmable. the '97 & 98 version have a single chip setup that needs to be unsoldered, removed, then reflashed, then resoldered to modify the coding. All the OBD1 versions have user removable chips that can easily be replaced.

vram
'95 up RS and all '96 up n/a have vram

trans
RS used G50/31, 32 or /33
Cup & RSR use g50/30
US all use g50/20
RoW n/a '94-'96 use G50/21 after that g50/20

there are some idiosyncratic differences in niche markets like Japan

Streather's book is a great resource for 993 info

77'3.6vram

1996 changes incorporated into 993:
1)Varioram intake system -10 to 12hp,but 17% more midrange torque
2)Bosch DME 5.2/OBD2 for all US market
3)secondary air injection including electric powered air pump
4)rear wheel offset changed from 70mm to 55mm
5)piston rings revised
6)exhaust valve guide size increased to 1st oversize
7)engine driven cooling fan restraining strap revised
8)fresh air change over valve revised
9)fuel return line revised
10)clutch driven plate replaced with another 964 version
11)gearshift tensioning plate revised
12)limited slip diff. manufacturer changed
13)front wheel speed sensors revised
14)power steering rack revised
15)air bag control unit replaced with 996 series unit
16)some rear control arms revised
17)rear axel stabilizer cross member revised
18)rear speed sensors revised
19)rear drive shafts revised
20)brake fluid reservoir revised
21)door glass frame L&R revised
22)dual horn,high and low pitched versions revised
23)litronic 2.0 headlights introduced
I have left out the 4wd and Cabriolet revisions because you are not in the market for such a car.All this info is on page 32 of "The Essential Companion".Also it is noted in the book that 18in wheels are not factory approved for use on 95' 993's while 96' 993's are factory approved for 18's.I am confident that 95' owners will discount most of the revisions so let the games begin!

NC TRACKRAT

Most '95's didn't have IMMOBILIZER alarm systems, only DRIVEBLOCK. Those that did have the IMMOBILIZER were slightly different than those installed on all the '96-'98 production. U.S. and ROW have different frequency control units.

Stealth 993

I will add a lot of 95's have the immobilizer, at least the later ones do.

95's also seem to have Boge shocks, instead of the Monroe, & last over 100,000 mi.

Of course the Basket Handle on the 95's.

My $.02, is the 95's feel a little more raw, & the engine feels more connected. Yes, the V-ram cars are faster, & have way more midrange torque, feel like they rev way smoother & faster.

I would drive a few, find the one you like, then get that one.

JPP

Actually, for the 1998 production 'W' series vin 993 cars produced from August '97 to July '98 there were 212 Targa's and 138 Cab's delivered in R.O.W. in addition to 122 Targa's and 1201 Cab's delivered to North America