Welcome to RennTech.org Community, Guest

There are many great features available to you once you register at RennTech.org
You are free to view posts here, but you must login to reply to existing posts, or to start your own new topic. Like most online communities, there are costs involved to maintain a site like this - so we encourage our members to donate. All donations go to the costs operating and maintaining this site. We prefer that guests take part in our community and we offer a lot in return to those willing to join our corner of the Porsche world. This site is 99 percent member supported (less than 1 percent comes from advertising) - so please consider an annual donation to keep this site running.

Here are some of the features available - once you register at RennTech.org

  • View Classified Ads
  • DIY Tutorials
  • Porsche TSB Listings
  • VIN Decoder
  • Special Offers
  • OBD II P-Codes
  • Paint Codes
  • Registry
  • Videos System
  • and get rid of this welcome message

It takes just a few minutes to register, and it's FREE

Contributing Members also get these additional benefits:
(you become a Contributing Member by donating money to the operation of this site)

  • No ads - advertisements are removed
  • Access the Contributors Only Forum
  • Contributing Members Only Downloads
  • Send attachments with PMs
  • All image/file storage limits are substantially increased for all Contributing Members
  • Option Codes Lookup
  • VIN Option Lookups (limited)

White987S

Contributing Members
  • Content count

    1,959
  • Joined

  • Last visited

  • Days Won

    5

White987S last won the day on February 13

White987S had the most liked content!

About White987S

  • Rank
    Contributing Member

Contact Methods

  • ICQ
    0

Profile Information

  • Gender
    Male

Profile Fields

  • Porsche Club
    PCA (Porsche Club of America)
  • Present cars
    2006 Boxster S

Recent Profile Visitors

1,396 profile views
  1. Re-confirm you are properly attaching the positive and negative terminals. What do you mean by "engine cover grills"? How old is battery? Is the vent tube properly connected? What is the battery's fluid level in each cell? If the battery is failing, and you "recharged" it, it only made it worse. Worse thing for a battery it to be fully discharged, and then recharged.
  2. I had great tire performance on my 2014 991S with PZeros. I now have the MPSS. I expect them to be just as good, if not better. On the PZeros, you only have the rim protector on the front 245/35/20.....not the rear. Witht the MPSS, you will have it on both, so that's about the only sidewall difference. They sit very well on my Sport Techno wheels. Make sure you order your tires ASAP. Many places run out of the popular 295/30/20 and 305/30/20 rear tires. You can easily upsize to the 305....FYI. You should also look into the new Michelin PS4S tire coming out now.
  3. Here is a little trick to try. Use the Dr. Color Chip website to find the code. https://www.drcolorchip.com/
  4. Exactly. You have over 8 quarts of oil and over 6 gallons of coolant.
  5. You could always go more avian.
  6. You mean a 3.2 not a 3.4. I've been following Porsche a long time. Never heard of the "heat seizure".
  7. My old 2006 987S was rock solid. Drove it for 60,000 miles and sold ($32) to my neighbor back in 2013 for 1/2 of what I paid for it. All I did to that car was wash it, put gas in it, new tires every 20K, changed the oil every 7K miles, and scheduled maintnenace. For a 987.....I'd recommend getting the S if your budget allows (more HP, bigger brakes and etc.).....skip the first year (2005).....and buy the best example you can find from 2006-2008. Good luck. Great fun Porsches.
  8. My 2014 911 is accurate, within 1 mph, high. My 2016 Ford is also within 1 mph. My old 987 and993 were less accurate, within 2-3 mph. All at highway speeds.
  9. Here's the math I promised you: Max expansion starts to happen above the 210-215 mark. I remember seeing this equation this summer: Specific volume of a unit can be expressed as The change in the units volume when temperature change can be expressed as dV = V0 β (t1 - t0) (2) v = 1 / ρ = V / m (1) where v = specific volume (m3/kg) ρ = density (kg/m3) V = volume of unit (m3) m = mass of unit (kg) The density of a fluid when the temperature is changed can be expressed as where dV = V1 - V0 = change in volume (m3) β = volumetric temperature expansion coefficient (m3/m3 oC) t1 = final temperature (oC) t0 = initial temperature (oC) ρ1 = m / V0 (1 + β (t1 - t0)) = ρ0 / (1 + β (t1 - t0)) (3) where ρ1 = final density (kg/m3) ρ0 = initial density (kg/m3) Volumetric Temperature Coefficients - β - of some common Fluids •water : 0.000214 (1/oC), •ethyl alcohol : 0.00109 (1/ oC), 0.00061 (1/oF) •oil : 0.00070 (1/oC), 0.00039 (1/oF) Hot engine ~220F and room temp ~75F and that's 145F temp difference. The oil volume expansion is then 0.00039 * 145 = 5.6% 5.6% of 9L of oil = 0.5L
  10. You overfilled the oil back in June. Probably by about 200-400 mls. Not much, but, you're over. Some Porsches burn oil. Some don't. Normal. Yours appears to not burn oil. That's good & normal. Our oil levels CAN go UP with low usage due to combustion moisture building up from daily driving, on short trips. Oil never gets hot-hot. Can easliy be 5%. Almost a 1/2 quart. Thermal expansion is a VERY REAL issue. I'll show you the match below. That can be another 1/2 quart.
  11. Interesting Sportplus997. Following.
  12. Agree. And if you run the car in the powerband above the 4,500 rpm's during spirited driving. My cars see a lot of 4,500-6,500 rpm fun.
  13. Those are good numbers for shear stability. Red Line is a god product. By comparison, Mobil 0W40 would have been in the low 60's and under 12.
  14. Lots of bad advice and information in these 2 posts. First, to get the maximum benefit of the DT40 you MUST do an engine flush with Joe Gibbs BR30 for about 200-400 miles. Way too much cross pollination with other oil's additive package. Especially Mobil's. This is the exact recommendation buy the product's developers Lake Speed of Gibbs and Jake Raby's of Flat 6 Innovations. Second, DT40 does NOT have "very high ZDDP". Not much higher than Mobil 0W40. Less than 100 ppm different for zinc and phosphorus. Read the VOAs and you'll easily see. And if you don't do the BR30 flush first, your actual ZDDP will be significantly LOWER than M1 0W40. Read the UOAs to easily see this cause & effect.
  15. Nice write-up, Hayyan, this will help future uses of this site. But your math is way off!!:) OEM 194 bulb = $4.5 Stealth bulb = $28.99 Difference = $24.49 = 544% MORE!! OEM 7507 bulb = $4.5 Stealth bulb = $29 Difference = $24.5 = 544% MORE!! OEM 7506 bulb = $9.25 Stealth bulb = $29 Difference = $19.75 = 213.5% MORE!!! I am usinf what the "cool kids" call new math.