karlooz

Pictures are from the rear wheel. Breaks are a Brembo Grand Tourismo set installed in 2003. On 2001 C4 Part # 1B1.8033A2 Front / 2C1.8007A3 Rear http://www.brembo.com/ENG/HighPerformance-...nTurismoBrakes/ ah, thx. i thought you were using stock calipers because of the PORSCHE script on the front.

what brake rotor is that? front or rear?

thx again loren. that's the part i am looking for. i am also thinking about changing my old style with "exposed" bolts to the newer style "recessed" bolts. i will definitely take pics.

just taking precautions from oil starvation at the track. i've read of an updated oil pan baffle for 2000+ cars... anyone have the part #'s?

LOL you troll this board too!!!! i really want to give the toyos a go but i want to make sure :help:

i keep seeing 3% figure as the maximum tire height difference, front to back, though i have never seen it in the manual. is it there? basically, i am looking at a set of toyo ra1's for my track wheels. sizes 245-40/18 and 305-35/18 on 18x8.5/11 wheels. front diameter is 25.6 and rear is 26.3, the percent difference being 2.7%. will these sizes screw up the ABS? :cheers:

IIRC, the gt3 chassis starts off as a carrera4 chassis. it was chosen for it's added stiffness due to the c4 front differential bulkhead. it is then seam welded. not sure about your other questions. What is different that makes the chassis stiffer? Differently shaped, or additional pieces? Thicker sheet metal? Full seam welding? I read someplace the MY02 and up Carrera had a stiffer chassis than the older cars. Anybody know how that was accomplished? Why is the engine refered to as Modular? Bill

100 bucks!?! that's a no brainer. leave it to the experts. if they end up breaking any studs then they have the proper tools to fix it.

errr, ummmm, welll.... i did em myself but i was lucky. it appeared that the previous owner had the headers removed for some reason allowing the header bolts to be easily removed. they probably used some anti seize. if your car is straight from the factory there is a good possibility they didn't use any anti seize. if you break these bolts you are SOL. one of the bolts on my car apparent had bee broken because there was an insert in one of the bolt holes. SPR had a terrible time swapping the headers and ended up busting quite a few of the bolts. he ended up flat bedding the car to the dealer. oh ya, i did break one of the bolts that attach the cat pipes to the header. :(

got this from another board, "2002-2004 Carrera vs. GT3. Chassis: The GT3 chassis is the Carrera4, Carrera4S, Turbo, GT2 chassis (stiffer). The Carrera chassis is unique to the Carrera (Coupe and Convertible), the front chassis is shared with the Boxster. Body: Same body panels with the exception of front bumper, rear deck lid (including ugly spoiler on GT3), rocker panels. Most of the Carrera have sunroof, but the delete option was available. Brakes: The Carrera and Boxster S share the brakes. GT3 uses 6 piston front calipers and 4 piston rear calipers, on bigger rotors. The GT2/GT3 rear brake pads are the Carrera/Boxster S front brake pads. Bigger brake cooling guides on the GT3. Different ABS calibration on the GT3. Suspension: The front wheel carriers on the GT3/GT2 are shared with the C4, the Carrera uses the Boxster wheel carriers. Adjustable height coilovers on the GT3 vs. Coilover on the Carrera. Spring Rates (F/R): 146#/203# (170#/260# on M030) vs. 228#/543#. Ride height (F/R): 158mm/158mm Carrera vs. 125mm (115mm in RoW)/128mm GT3. GT3 uses front monoball camber plates vs. rubber upper mounts on the Carrera. Rear upper mounts are rubber on both cars, but stiffer on the GT3. Interior: No Rear seats on the GT3. Sport Seats standard on GT3 and optional on Carrera. No speakers on the doors on GT3, optional door speakers on Carrera. Reduced sound insulation on GT3. Rear carpeting with GT3 logo. Everything else looks the same. Wheels: 17" standard on Carrera vs. 18" standard on GT3. Carrera 18" wheels 8" x 18" ET50, 10" x 18" ET65 vs GT3 18" wheels 8.5" x 18" ET40, 11" x 18" ET63. Engine: Modular engine (a.k.a RMS-leaker/Wet sumper) on Carrera 2 with 320Hp (345Hp with X51) vs. GT1 evolved race engine on the GT3 (dry sump, 8200rpm redline, Titanium connecting rods, 380Hp underrated power). I've driven the 996, 996X51, 997S and GT3, the GT3 feels stronger than the suggested 60Hp difference. GT3 uses a third radiator while the Carrera uses 2 (3 on the X51). Transmission: Boxster S and Carrera have the same transmission, no LSD, no adjustable gear ratios, no rebuildable. GT3 uses the GT3Cup transmission with a different R&P (3.44:1), LSD, 3rd-6th gear can be changed, 1st and 2nd gear changes require a new shaft. The transmission can be rebuilt entirely (gears, syncros, seals, shaft, r&p, etc.) Electronics: no PSM available on the GT3, while optional on the Carrera. There are more differences, although minor, such as rpm gauge with GT3 script, stereo, model designation, spare tire vs. no spare tire, rear windshield wiper, etc. However, a lowered, Aerokit II Carrera with GT3 wheels looks exactly the same as a GT3."

my motons have 450/700 lb springs but the dampening is MUCH stiffer than PSS9s. dampening on Pss9s are much softer than on moton club sports, even on full stiff. mine are barely streetable and are better suited for the track but PSS9s are more of a performance street setup. got this from another board: spring rates for gt3, ft 228#/rr 543#. i don't think PSS9 springs are any stiffer than gt3 springs.

here you go

thx loren. hmmm so if i have a 6 speed there really is no need for the CAN bus then. i imagine on the e-gas/PSM cars then there would be a greater need for it.

hey loren (and others) i was wondering if you can help with some wiring issues. i am trying to wire up my AiM XG log data logger to tap off the ECU's data stream through the CAN high and CAN low wires. dave at precision auto research has been great at helping me with the wiring but we both wanted to be sure. the AiM system needs to attach to the ECU's CAN + (high) and CAN - (low) wires. i have found thru alldatadiy.com that i can tap ECU pinouts 85 (CAN -) and 86 (CAN +). according to dave's porsche techs, that these are the correct pinouts but the diagram does not show the color. apparently BL is CAN + and GR is CAN - (BL=blue and GR=grey correct?). it also appears that i can tap into these wires from the green plug, PLUG A, from behind the instrument panel. alldatadiy doesn't have a wiring diagram of the green plug so i was hoping you would have it. thx

it's fine for the street but i track the 996 regularly. hey, the gt2, gt3, cup cars RSRs have the third radiator so it must be there for a reason ;) i'd like to reconfigure the rads to RSR style, venting out the sides of the bumper, but the bumper is too aggressive for the street. btw, i wouldn't expect it to run cooler since the engine has an ideal running temp but i do expect the temps to remain more constant at the track. the needle has been between the 2 and the 5 and a couple of times at the 5 and just past it on a couple of hot track days. good idea though regarding the ac condensers.