What are the MUST mods/improvements for 911SC?

[Craig_D]

WEVO shifter with dual springs, and their precision shift joints. It was my first mod and made a huge difference in enjoyment.

[thefaculty]

Awesome thread - subbed!!

[shaunmbenson]

I would start with nothing but proper maintenance.

Then do Track Days. And AX. A lot of them.

Then do mods, one at a time, so you really feel the change each mod gives.

suspension/set up first.
Lighten second - this could include the SSIs
may need to retune susp/ride height if you lighten a lot
then do your engine internals if needed.

These cars are so fun at their limit and driving a slow(er) car fast is more fun than a fast car slow. If you can turn the same time driving 9/10s on track it is WAYYY more fun that turning the same time at 6/10s in a faster car.

[Trackrash]

So little has changed in the last 5 to 6 years......

[fred cook]

to start with. I would add SSI exhausts to the list. If not already on the car, I would add 16x7" front wheels and 16x8" or 9" rear wheels. A front strut brace would be helpful as would adding a short shift kit. I used the Porsche short shift kit on my SC and like it very much. Happy hunting!

Originally Posted by vanos

Starting with a stock car, what are the MUST mods/improvements for:

Lowered suspension/handing:
- Bilstein shocks
- Turbo tie rods
- What else?

Braking:
- Bigger rotors (if yes which ones?)
- Pads for street

Engine:
- Performance mods?
- Mods to improve engine robustness?

I am trying to educate myself on 911SC mods to not only improve the performance but the overall robustness of the car. I know many install turbo or later model 911's parts, if there is a link even better.

[Bill Verburg]

old thread, but yo can address 2 issues w/ one change
while a 3.6 is nice and gains you ~50 lb-ft of torque and losing 100# is like adding 15lb-ft of engine torque, and regearing will have a similar effect all are intrusive and expensive.

Change to 15" wheels can add ~45lb-ft(near what a 3.6 adds)

here are a couple of possibilities

[82SuperC]

82 911SC mods:

Oil fed tensioners
Airbox pop off valve
Turbo tie rods
H4 headlights
headlight relays
air conditioner delete

Otherwise stock and just fun to drive.

[Bill Douglas]

Keep the rev's up.

[Flojo]

my list:

complete tune up to include valve adjustment
renew all K-Jet seals,
ultrasonic cleaning of parts
new injectors
replace all vacumm lines
chain tensioner upgrade
upgrade oil cooler

renewed bushes front and rear
RS strut brace (welded in)
turbo tie-rods
lowered to 63cm front, 62cm rear
rebuild calipers (thicker rotors need 3.2 calipers)
Zimmermann drilled discs and Ate pads
SS brake lines
SSIs and 2 in, 1 out Dansk Sport muf
new Bilsteins B6 Nürburgring front and rear
WEVO shifter & PJS coupler
7/8x16 w/205 & 225 tyres

weight droppet:
- lighter battery (now 10, instead of 23 kg)
- removed rear seat sound deadening
- removed stereo
- removed AC
- removed rear heat blower
- ducktail fibre glass
- removed rear foldable rests

[James Brown]

nice^^^ that should keep you happy.

[Bill Douglas]

And what looks nice. Is to backdate the heating system. This is removing those awful brown hot air hoses etc.

[Flojo]

Originally Posted by Bill Douglas

And what looks nice. Is to backdate the heating system. This is removing those awful brown hot air hoses etc.

indeed...

[RSBob]

First I backdated the heat and then backdated the induction system to PMOs with EFI. More grunt and a great induction sound. Retro-mod.

[Kemo]

ok...here is the list of things I did to my 82 last year or so

21/28 Torsion Bars
Revalved shocks to match
OEM Sways from 86 Carrera new bushings
new rubber/neatrix bushings in A-arms and rear torsion area
new wheel bearings front and rear
rebuilt calipers
hawk HPS pads
sweet assed alignment
had my CIS fuel distributor rebuilt along with WUR, 6 new injectors
new fuel filter, Cap, rotor, spark plugs, and Magnecores
momo prototipo
radio delete with block off plate

to do:
SSI Heat Exchangers with Dansk sport muffler
Adjustable rear sway drop links

[kjchristopher]

Originally Posted by Kemo

ok...here is the list of things I did to my 82 last year or so

21/28 Torsion Bars
Revalved shocks to match
OEM Sways from 86 Carrera new bushings
new rubber/neatrix bushings in A-arms and rear torsion area
new wheel bearings front and rear
rebuilt calipers
hawk HPS pads
sweet assed alignment
had my CIS fuel distributor rebuilt along with WUR, 6 new injectors
new fuel filter, Cap, rotor, spark plugs, and Magnecores
momo prototipo
radio delete with block off plate

to do:
SSI Heat Exchangers with Dansk sport muffler
Adjustable rear sway drop links

Mind sharing details on alignment and ride height (wheel center to the, not fender lip)? Which shocks? Have Dyno plots?

[wreckah]

it all depends on what you want...

for street? i think SC's are now starting to become quite old, and so a lot of things are going to start breaking down, or at least deteriorating. If you buy a stock car now, be prepared for a lot of cost and time to make it run nicely.
replace/repair everything that doesn't work or is too old: tires, fuel hoses, suspension, vacuum hoses, brake lines, discs/pads, light bulbs, relays, wires, etc...and if your CIS is not perfect (and most of them aren't), add another couple of 1000 to make right. costly.

Other than that, MUST mods? i've done lots of mods, but not one of them is really MUST. Most of them were done out of another form of necessity: things were broken.
Stock it is quick enough, it brakes well, steers great, sounds good, suspension feels solid, it is gorgeous to look at.

If i had to put my mods (not repairs) in order of most worthwhile and also considering budget:
nardi steering wheel (best mod for me personally, cheap and wonderful)
take off A/C (non working)
wideband 02 sensor and afr gauge (peace of mind)
volt gauge (peace of mind)
heater backdate (get rid of a lot of junk, and heater still works as well as before)
repro lightweight rear light units to replace the rotten heavy old ones
hydraulic tensioners (peace of mind)
bitzracing EFI (to replace rotten CIS)
classic retrofit CDI+ (peace of mind and a bit tuneability)
SSI's (to replace rotten heat exchangers)
(the car already had plastic bumpers, rocker cover delete and some other bits)

I'm sure the car is quite a bit quicker now, but you get used to it quickly and even with EFI and SSI's, it is deffo not night and day with CIS and stock exhaust.

It is boring, but i would now put my money in good tires first. Maybe some new seatbelts too
cheers

[Kemo]

I would have to dig around for the alignment sheet, ill see if its in the glove box.

ride height is 1/2 inch under Euro in the front and back with RUF Speedlines, Bilstein shocks re-valved at Elephant. Stock motor with JE 9.5 pistons with a "re-nikasil" from EBS, headwork by EBS, Rockers service at German Precision, New Rocker Shafts, RSR Seals, Crank Serviced and drilled by Armundo, Jerry Woods rebuild of Distributor, CIS and WUR rebuild at CIS Flowtech, the list goes on and on like my Credit Card Bill

[toddetch]

Hey @wreckah,

I'm curious about these two things you mentioned:

Originally Posted by wreckah

it all depends on what you want...

wideband 02 sensor and afr gauge (peace of mind)
volt gauge (peace of mind)

I assume the volt gauge is to make sure you are not overcharging and then blowing the alternator, correct?

I've never heard of the wideband O2 sensor and afr gauge. Can you elaborate?

Thanks!

Todd

[Bill Douglas]

Launch button.

[Trackrash]

Originally Posted by toddetch

Hey @wreckah,

I've never heard of the wideband O2 sensor and afr gauge. Can you elaborate?

Thanks!

Todd