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george996

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Everything posted by george996

  1. i found the following th check the sensor; 1. Remove connector in engine compartment. 2. Connect ohmmeter to temperature sensor connector, pins 1 and 4. Display: 2 - 3 k 0hm at 20 °C.
  2. Hello gt3 forum, I am considering a 2004 gt3 (30,000 miles) and would like to know what to look for. The crankcase is leaking near the seam near the rms. The current owner has an extended warranty and Porsche is replacing the crankcase halves. Any suggestions/comments will be appreciated. P.S. I am currently driving a 2004 996
  3. i installed the new power spring and cannot believe the difference. Pedal effort is minimal! Just think, i was about to replace the clutch and already pursched the parts.
  4. just an fyi. Several months ago i heard some noise while depressing the clutch and then it seemed a little more difficult to depress. last night it made the same noise but this time the clutch pedal became noticably firmer. took out the clutch power spring and found that it was in three pieces. will update this post after installing new part this week.
  5. I don't know if the trans is interchangable but i can tell you that the pressure plates have different dimensions so you will have to sort that out as well. The distance from the pressure plate spring, where the throw bearing makes contact, to the flywheel face is different. Perhaps the clutch fork needs to be changed as well but i am guessing.
  6. yes, the pressure ring extends out of the housing compared to the 996 pressure plate. However, you will notice that the 997s flywheel has a raised portion where the pressure plate fastens to it. This compensates for the difference in the pressure plate. The attached images shows the difference between the 996 and 997s flywheels. 996_flywheel.pdf 997_flywheel.pdf 996_pressure_plate.pdf 997s_pressure_plate.pdf Therefore, it looks like to use the 997s self adjusting pressure plate it must be used with the 997s flywheel. Then the question is whether the 997s dmf will fit the 996. Does anyone know?
  7. Does anyone know if it possible to install 997 S clutch in a late model 996? The 997 S pressure plate has a self adjust mechanism which compensates for wear of the clutch disc. This is a nice feature since the pedal effort remains constant over the life of the clutch. 997_S_Clutch.pdf
  8. looks like pelican parts sells the transmission mount for the 996. see the link. http://www.pelicanparts.com/cgi-bin/smart/...9%20M%2FT%20%20
  9. i recently changed my stock 996 headers to the 997 type. had no problems removing bolts but did apply some wd-40 the night before. used a 13 mm socket and torque wrench for the entire project. i did not notice any performance change, just a slightly different sound but very minor. the 996 headers have longer primary pipes and maybe there is a little more low end torque. Not sure it was worth doing from a performance aspect. my reason for replacing the headers and cats was to eliminate vibration and it did. car runs and feels very smooth. why do you think the stock headers are a poor design?
  10. for whatever it's worth, the 2002-2004 normaly aspirated 996's with 7.8dme do not have intake manifold vacuum sensors, therefore cam timing and valve lift are actuated from other inputs (i.e. rpm, load, etc.). I have the dme manuals and will look for info on the gt3's.
  11. You are correct, the washer will rattle. I installed pss9’s and stopped the rattling by sliding/pushing the black bump stop all the way up so that it held the washer against the top mount.
  12. a vacuum leak is a lot better to have than a valve lift problem. do you know specificaly where the leak was? i would like to know. regards, george
  13. without hearing the noise i think it is valves switching from large lift to small lift position. that would explain why you need to rev the engine over about 3,200 rpm for them to switch to large lift. if you have durametric software you can test the valve lift solenoid valve and try to duplicate the sound. playing around with durametric i can make my 04 996 make a similar sound. Pages_from_2002_996_Carrera_Technik.pdf
  14. Heat is also a good technique... would you heat the bolts with a torch?
  15. Thinking of replacing exhaust headers but worried about snapping bolts, gauling threads, etc. Does anyone have any experience and tips removing bolts? thank you
  16. i have first hand experience with the Mobil 1 synthetic and the factory fluid. please see attached Rennlist link. http://forums.rennlist.com/rennforums/996-...nual-996-a.html
  17. Alan, That’s great the vibration is gone but you probably affected something else when changing the AOS. I don’t know the Boxster, did you have to remove and replace the exhaust? The variocam adjustment is independent of oil pressure. Take a look at this thread http://www.renntech.org/forums/index.php?s...c=17104&hl= Also, did you notice the vibration in all gears and stationary? George
  18. I would like to know your theory how the AOS would cause a vibration. I have a 996 and sometimes notice a vibration at 2000 rpm.
  19. Hopefully this will help someone. I replaced my transaxle fluid last summer with Mobil Synthetic Gear Lube 75W-140 last summer and had no issue at the time. However, when the ambient temperature dropped into the 40’s and 50’s here in Southern CA this winter it became difficult/stiff to shift into 2nd and 3rd until the trans heated up. I reviewed all the posts and decided to replace the fluid with Porsche transaxle fluid (about $100 for 3 liters from the dealer). I probably would have tried Shell Transaxle but could not find it and was anxious to make the change. I am pleasantly surprised with the difference. There is definitely a significant improvement (reduction in force). Also, after only a few minutes shifting feels as normal as a warm trans. The biggest improvement is when the trans is cold but I notice a little more smoothness when warm.
  20. No drone/resonance between 2000 to 3000 or anywhere. it is a little loud when you accelerate hard but sounds great. Another observation, you can feel when the variocam plus switches to large valve lift at about 3,200 rpm. You can't feel this with the stock exhaust. Also, when starting from a dead stop (i.e. low rpm) the exhaust sound gurgles a little and is not as pleasant as the sound at higher rpms. I am very happy with this mod and would recommend it.
  21. The dfister mod is great. no drone. It really sounds great above 3k rpm when accelerating.
  22. I think they are talking about the pressure relief valve on the oil pump housing. Loren, I think the pressure relief valve is something else. The non-return vavle is like a check valve.
  23. Does anyone know where the non-return valve (item no. 5 ) is located? It is used in the Variocam Plus system beginning 2002 for 996’s. I can’t find it as a standalone part in the parts list so I am guessing that it is integrated into the valve tappet housing or in the Variocam hydraulic actuator valve.
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