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About john.jay@hotmail.com

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  • From
  • Porsche Club
    PCA (Porsche Club of America)
  • Present cars
    997 GT3 RS
    997 Carrera S
    993 Carrera

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  1. About a year ago, I installed some window safety netting from Bobby Archor in dallas at his suggestion. It's a poly carbonite so rubber doesn't stick to it on track. It's hot here and i had NO temp problems and the radiators look like new, I now 3 other drivers who've done the same thing successfully,
  2. I have a LWSMFW stock in my RS. I assume you would install the OEM item. Is so you will have the usual clatter in idle...no big thing AND you won't have any problem with stalling at lights. You will find it revs more freely almost as if you were running carbs. That said as far as installation, do it through Porsche. :)
  3. By your re-statement, I think you are going to need more expertise/experience than I can offer. I am still trying to figure out why my compression and rebound setting changes frequently do not do what I think they should. That said, I am reasonably sure (wait for a more knowledgeable responder or second opinion) that the percentages mean the amount of torque difference between the wheels on acceleration/deceleration. Obviously, you would want more difference allowed during deceleration. There is a reasonably easy to understand differential tuning blurb here, but be sure to note that the number shown are not %ages, they are ramp angles. The higher the ramp angle, the greater the difference allowed. Excellent technical article that helped me with understanding %ages. Please share what you learn. Thanks QP. Article's great and given the late hour, I'm sure offers a cure for insomnia.... :)
  4. A limited slip differential allows the drive wheels to put power down through and out of corners and improves control by ensuring that torque is applied to both rear (in a GT3) wheels. To understand how and why an LSD works, it is useful to first understand how an open diff works and why it is needed, then compare/contrast. Here is some reading: Wikipedia link Car Bibles link (go to differential section, 3/4 of way down) :) Thanks Q.P. But now what do the LSD % quotes mean e.g. 40/60, etc. And how do these variation help me get through a corner?
  5. Can anyone explain how a LSD works in corners?
  6. 8k mi. is way too much and likely the reason for the vibration. You may also have flat spotted one ( or more). You didn't mention if you'd tracked the car as well. If this is the case you're long over for some new rubber. Try the Corsas. BTW your other quiry, look for the little yellow icon as you approach 8200 rpm. This will save you from getting into the soft limiter ( assume you over reved on the upshift....not really aproblem if it's infrequent. :)
  7. I know one individual that routinely tracks his GT3 RS. I was chatting with him at Texas World Speedway a couple of weeks ago and he mentioned that the Pirellis, in his opinion, were far superior to the Michelins. He drives his RS to the track. He seems to cut respectable times - or so I hear :) Thus, it seems like the Pirellis have at least one enthusiastic and knowledgeable supporter. Don't know/think this helps much, but at least someone out there thinks you have the superior tire. Nestor That's me.I've used the cups and found that in temps below 65 deg F they don't grip as well as the Corsas. I get about 2500 miles at a ratio of 1 track mile for every 4 road miles . I use the car only for track but drive it to and from the track. :)
  8. Cold 26F and 27 R. I look for 32 F hot and 36 R . Above that pressure my GT3 RS gets greasy. Be sure you do a couple of laps to get the heat up before you push them. :)
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