Quote:
Hurst said:
Quote:
Turbo Al said:
Remember, guys, the 997TT-TipS is pre-boosted, and with those VTG's, that means CONSTANT torque of 500lb-ft/680Nm+ (with overboost) from launch to 100mph/160kph. What Porsche needs to do for a faster 6-speed manual is to tune it up to over 520 peak HP and 550lb-ft/750Nm torque, and then I'd upgrade the clutch-like the Sachs GT1/level 2 I put in my upgraded 996TTS-it's a piece of cake to operate with the OEM dual mass flywheel-can you say 997Turbo S ?
Al, I've only driven a 996TT in tiptronic (my neighbor is quite the GT afficiando
). Can you tell me how heavy the flywheel feels on the manual and exactly why you were interested in upgrading it and the clutch?
Thanks,
Hurst
Hurst,
I upgraded my 996TTS (TSCab) with an EVO stage 4 package with a GIAC engine chip for peak HP of 600, peak torque of 600+ lb-ft/800+Nm. The only mechanical mods. were a change of the headers, blow-off/diverter valves, connecting hoses, sport exhaust with 100cell cats, and Venturi flow airbox, using the stock turbo's (K24's) boosted to 1.2BAR. That extra torque (800+Nm) at 4,000rpm's is more than the stock clutch could handle. I had the mechanic who did the install test it and he could feel the clutch slip, so I changed to the Sachs GT1/level 2 street clutch to handle the extra torque. I decided to keep the stock dual mass flywheel, rather than change to a lightweight flywheel, since the advantages of the lightweight flywheel (more throttle response, especially at low rev's) didn't seem worth the extra noise and since the car is now plenty fast with the upgrade. I use this car as my summertime "daily driver" (I won't track this car, only my Noble M400-due in April after some minor "modifications"

), and my reason for upgrading it was for pure exhilaration and fun. I drove it last weekend as we had some clear weather. Man, what a blast, it's rated with the mods. good for 0-60mph in 3.8 and 0-100mph in 7.6, and it felt like it!

When spring comes, I'll try to GPS some times to see how fast I can push her. Bottom line, I have NO difficulty driving the car with the stock clutch or the Sachs clutch with the dual mass flywheel-it is only slightly heavier feeling with the the stock flywheel, in some ways preferable to the stock clutch since it feels more firm-and no slippage yet. Occasionally a lightweight flywheel can be trickier to operate for some if they are not proficient at driving a stick, but I haven't tried the lightweight flywheel in this car. I am putting one in my Noble this spring-I'll write a review of that car for rennteam once it arrives (April or May at the latest).