1 year ago

Slipstream - May 2017

The monthly newsletter of the Maverick Region of the Porsche Club of America

Screen Test: Protecting

Screen Test: Protecting Your Porsche Radiators With Grille Inserts By Mark Doerner Photos courtesy of the Author f you’ve had a water-cooled Porsche for any I length of time, you’ve had to deal with a very odd design feature of your masterpiece of German engineering: the radiators and A/C condensers are practically flapping in the breeze, protected by a few thin louvers in the front. Sure, those louvers would probably stop a two-by-four from reaching your delicate radiators and condensers, but anything smaller than that, not so much. This is what us Porsche fanatics would call a “special” design feature that gives our cars “character.” While GT track-oriented versions of the 911 and Cayman have some nifty screens in the front grille, the rest of us are stuck with the problem of excessive road debris mucking up and possibly damaging our radiators and condensers. And in the Dallas/Fort Worth area there are plenty of stones flying around on the roadways with our endless parade of road construction. Of course you can just accept that lots of crud will get through the front bumper louvers, necessitating periodic bumper removal and extensive cleaning around the radiators and condensers (as outlined in an excellent article in the January 2017 Slipstream). Or, you could get some aftermarket screens for the front bumper to prevent much of that debris from getting through in the first place. I opted for the latter. And after a little online research, and lots of discussion with other Porsche owners, I narrowed it down to two aftermarket options for front grille screens: Zunsport and Rennline. Zunsport (Zunsport. com) is a British company that makes a very nice-looking set of screens for the front bumper. The sets are cut and formed for most Porsche models, ready Zunsport grill set for installation. One of the nice things about the Zunsport screens is that they can be installed without removing the front bumper. For the do-it-yourselfer who does not have the time and/or expertise to remove his or her bumper, these are a great option. The screens pop in from the front with various clips and screws, all provided with the kit. The other option is a set of screens made by Rennline (, a company out of Vermont in the good ol’ U.S. of A. These screens require the removal of the front bumper for installation. While that may be a negative if you want to install the screens yourself, it does allow for a somewhat more secure attachment. Once the bumper is removed, the screens are installed from behind using a set of screws and clips provided with the kit. The kit comes with installation instructions, and the Rennline website has a video showing how it’s done. Of note: the video on their website does not show how to remove the bumper, but such videos are readily available on YouTube. For the less mechanically inclined, you could take your car to a good Porsche mechanic and they should be able to handle the installation with ease (although not without cost). There is one other option I’ve heard of – buy some sturdy grille screen and create them from scratch. Without a pattern this could be a real challenge, and well beyond my skill set. But I know there are many talented Porsche owners in our Maverick Region for whom this would be a fun and challenging weekend project. I opted for the Rennline screens, just because they seem a little more secure in their attachment to the bumper. But I have seen the Zunsport screens on a couple of Porsches and they look super nice, and they are probably plenty sturdy for most people. I had my Rennline screens installed at RAC Performance, and I was happy with the outcome. They seem as sturdy as factory-installed grille screens, without any kind of rattle or looseness, and the installation hardware is fully hidden from view. As you can see from the photos, the layout of the screens is a little different from the factory screens on a GT3 or GT4 in that they are recessed behind the original horizontal louvers (the GT cars have no louvers to contend with). But this is still a very clean look, worthy of your Porsche. Both the Zunsport and Rennline screens come in black or silver. I opted for the black, given all the black trim on my Porsche. But if you want to get wild Rennline grill installation on the author’s 991 GTS and crazy, I can see how the silver could look great with the right color combo. 20 May

Porsche of the Month Selected by Bill Orr For instruction on how to submit your Porsche photos in the POTM contest go to: photos/POTM/ Silver Porsche 911, “Spring Is In the Air!” (Photo by Bob Molyneux) MARCH TRIVIA It’s Easy to Play! Play here for fun and find the answers below OR Play for prizes on the web at Thanks to Jerry DeFeo for putting this together. The Winner for this month is TOM MARTIN getting all 5 of 5 Correct. Congratulations Tom. Thanks for playing and we will see you again next month. Tom, please contact Kirk at Zim’s to claim your $25 Gift Certificate. Thanks to all for playing! 1. At a certain Road Rally here in the USA, there is a 3.2-mile Section of State Hwy 75 that is shut down by the local County Sheriff, thus making it the longest no-speed-limit public road in North America. In what state is it located? a. Georgia b. California c. Colorado d. Idaho Source: Porsche Panorama, Feb 2017, p 61 2. The iconic duck-tail spoiler of the 1973 Carrera RS was an option for 1974 except in what country? a. USA b. England c. France d. Germany Source: Porsche 911 Red Book, p 40 3. Which of the following did NOT happen for the 1976 Porsche 911 and Turbo? a. Turbo boost gauge fitted for first time b. Hand throttle was eliminated c. Five-blade cooling fan replaced the 11-Blade on all but Turbo d. Sportomatic transmission went from a fourspeed to a three-speed Source: Porsche 911 Red Book, pp 42-43 4. The Targa was introduced in 1967 with a soft rear window and folding top. There have been many variations, but what was the first model year with the sliding glass roof? a. 1995 b. 1996 c. 1997 d. 1998 Source: Porsche 911 Red Book, p 129 5. In 1996 a newer Tiptronic transmission option became available, known as the Tiptronic S. What was the difference that made it an “S”? a. Stronger for taking Turbo HP b. Included limited slip differential c. Steering-wheel shift buttons added d. Easily changed ratios for track or road Source: Porsche 911 Red Book, p 128 Answers: 1) d 2) d 3) a 4) b 5) c 21

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