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About octantman

  • Rank
    Contributing Member
  • Birthday 07/19/1960

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Profile Information

  • Gender
  • Interests
    Astronomy, Ancient Rome history, Formula One, ALMS/LMS and Grand Am/Rolex racing, history of GP racing, offshore fishing

Profile Fields

  • From
    Greensboro, NC, USA
  • Porsche Club
  • Present cars
    Infiniti EX35
  • Former cars
    2003 Boxster
  1. Good Morning. So can you tell me which set of bolts you loosened and tightened ? My muffler is supported from 2 bolts on top of the muffler, and by the exhaust pipes themselves. The 2 bolts on the bottom of the muffler are not attached to anything. Of course the components are bolted together at several locations. Alan
  2. Hey, David. This is octantman. I posted the same problem you seem to have been close to fixing, that of the vibration at 3000 to 3200 rpm. I have off and on tried to reason a solution. I cleaned my MAF as a part of replacing my air oil separator a while back and the vibration went away completely, for about a week. Cleaned several more times with temporary results. Replaced it with same temporary results. Today I took the heel of my hand and pounded on the the cat, and that same low frequency vibration was there. So my request is that if I were to take this to an independent shop and get
  3. Take a look at Pagid, Textar, Mintex and Galfor. I use Pagids, but my car is purely a track car, and I use high MOT, high friction pads. Shop around - you can find some street ones at a decent price. And look at the DIY on how to install brake pads. I have a 2003 Boxster and just replaced all 4 rotors, rear pads and sensors. Had replaced the front pads a year ago. My original pads were (Porsche) Brembos, stamped right on the back plate of the pad. I replaced with Textar. Cannot tell the difference, my car is a daily driver. The symbol stamped on the original rotors is also Brembo bu
  4. Advance Auto sells both products and whereas the MAF cleaner does cost a couple dollars more a clerk overhearing my question about the products being the same said definitely not exactly the same, get the MAF cleaner. You judge, point is Advance Auto sells the MAF Cleaner.
  5. Good afternoon. I have suffered from a vibration that has gotten worse over the years and have participated in posts in the past. I have a simple question after stumbling across this information when monitoring live data from the engine sensors. 2003 Boxster, 65,000 miles, vibration since 8,000 miles. 5 speed manual, original owner, daily driver. Viration only under load. In addition to the Durametreic software, I bought a portable Actron 9180 unit. I have observed that at a steady engine speed of about 3180 rpm the throttle closes from about 18% open to about 8% open all at once. It is at
  6. At one time I had the engine compartment open revving slowly up to about 4,000rpm and this flap did operate at about 3,000, although there was no vibration. Could definitely hear something click and indeet you can see the stud on top rotate. There was a lot of oil when cleaning it but did not notice grit. But since I operated it about 5 times plus cleaned the linkage outside with a toothbrush this could be it. So there is something else relatively simple for folks to try. Well, the vibration came back. If Renntech believes this is a misleading post and thread, please remove it in its e
  7. At one time I had the engine compartment open revving slowly up to about 4,000rpm and this flap did operate at about 3,000, although there was no vibration. Could definitely hear something click and indeet you can see the stud on top rotate. There was a lot of oil when cleaning it but did not notice grit. But since I operated it about 5 times plus cleaned the linkage outside with a toothbrush this could be it. So there is something else relatively simple for folks to try.
  8. George Costanza is an Architect too! :) Does this "line" really work? So between the 2 of us we know just about everything, right George?
  9. Now there is a possibility, I made sure that was clean and functioned fully, operating the linkage attached to ther vacuum canister. I assume you are talking about the (horizontal duct forward of the throttle body) this thing: Silly for Porsche Service to not even try. My explanation is quite elaborate but it is because I spent hours making sure they understood all the conditions precedent to the vibration. Thanks for the evaluation.
  10. Hey, George. I participated in the thread you reference. Had NO vibration when stationary or before warming up to 185 degrees. You may be right so here is what I did: 1. Read and cleared misfire faults cyl 2,4,5. 2. Removed and cleaned (just wiped off oil, used no cleaners) throttle/manifold section and forward manifold section taking care to see that connectors and vacuum tubes had been secure before removing. 3. Removed old AOS. 4. Cleaned MAF. It's connector was secure and clean when removed. 5. Replaced K&N air filter with OEM filter. Used since June 2006 and cleaned annuall
  11. All gears but never when stationary. Also, I think VarioCam for Boxsters and 911 are different. Here's what Ludvigsen says on page 1370 of "Excellence" specifically for the 2003 MY and updated VarioCam on the Boxster: "Assurance of enough hydraulic pressure to operate the VarioCam was given by a five-percent increase in the pressure pump's size." Could be one of those times I am over my head, but there it is. Alan
  12. I will tell you first that I am an architect and understand that many things are inter-related, but I do not know how they are inter-related. The theory is has not included the AOS until now. I have believed all along that the VarioCam was the culprit. The valve overlap is controlled by VarioCam somewhere between 1,250rpm to 5,120rpm according to Porache literature but the service manager 5 years ago, who I trust but who is no longer there, told me that the VarioCam is the only thing that "happens" in this 3,000-3,200rpm range, where I have had the vibration. I asked him what was different a
  13. Great job! Did you find it a difficult repair? For $90 this must be a DIY correct? Yes, DIY. Took about 3 hours to remove the top manifold sections and throttle and clean all the oil out, but otherwise it was not bad. Anything in the Boxster engine compartment is tight, but the AOS was just a little tedious, that is all. The AOS cost anout $78 and the bottom hose was $12, and that is at the local dealer. I posted a fix and some photos just before this post which goes into a little more detail, but it is mostly about the AOS having blown. If it was just replacing the AOS and not all the c
  14. I just replaced my Boxster's AOS on a 2003 with a 2.7L engine, 65,000 miles, 5 speed manual transmission. An unexpected byproduct is that an engine vibration at about 3200 rpm's that Porsche said was normal is completely gone. I also cleaned the MAF but surely that was not the fix. If you have a vibration that occurs after warm up when accelerating thru this rpm, driving on the highway at this rpm, and more pronounced decelerating in gear thru this rpm, and you have not replaced your AOS, you might just want to try this. I would welcome any dissertation anyone out there may have as to why this
  15. Last friday my AOS blew completely. Thanks to this forum I was able to come back from the brink of the abyss and all is well. Most of the AOS posts show or describe a unit that bolts to the side of the engine and has a bellows on the bottom. For the 2003 the unit bolts down directly onto the variocam area without bellows and has an L shaped tube that fits onto the side of the engine. I went with the cut the old hose and replace it route using the hose clamp for the new hose connection to the side of the engine. The newest revision number is .01 and cost about $78. I had the .00 on my 2003. Ple
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