b'The hottest word today in the Porsche lexicon is backdate. Everyoneislookingforthatclassic70slook.Whether theyrechasingtheperiod-correctclassic911look,or somethingmoreraceinspiredwitha73RSstylefront bumper, or maybe even wanting to go more aggressive with the later IROC style massive opened-mouth front bumper. Blocked off RS style bumper on the left and wider RSR style bumper on the HOW COOL IS YOURright with mesh screen blocking off the empty cavity AIR-COOLED PORSCHE? The proper way to install one of these coolers is to cut the By: Ravi Dolwani, owner of CSF Cooling and the #CSF911 front tub to create more exit air-low for optimal cooling. This also allows proper routing of the lines to go straight backandaroundtheoilcooler,aswellasallowsthe Fromhighproilelow-productionshopslikeSingerandadditions of small fans to be used to pull airlow when the Guntherwerks, to boutique specialist like SV Auto who onlyAn IROC-inspired 81 SC backdate street car build.car is idling (i.e possibly sitting in trafic or pit lane).build a handful of cars every year, there is no shortage ofBuilt by Sleepers Speedshop in Costa Mesa, CAtalentedandexperiencedmechanicsbuildinghot-rod, resto-mod, and restored Porsche 911s, many of these shopsBoth the 73 RS style and IROC style front bumpers both beingdailycustomersofSSF.Throughstate-of-the-arthavefunctionalbottomcenterfrontoilcoolerpockets. distributionnetworks,buildersnowhaveeasieraccessThese additional oil coolers were needed to help keep race than ever before to top manufacturers of performance hardcars cool in demanding competitive environments, espe- The CSF 911 back from paint, with front tub cut for front oil cooler parts and software from around the globe to help mergeciallywhendraftingbehindothercarswheredirectplacement. This allows better airlow through the cooler with additional classic Porsche style with 2022 technology.space behind the cooler for adding a fan shroud. Billet intake plenums,air-lowsometimeswasinadequate,orinhotweather combined with Formula-1climates in busy summer racing months. level servo-units controlling73 RS / RSR BumpersIn 2021, drive-by-wire engine management systemsand Proper Oil Coolingwhile I was through mil-spec wiringSlightly smaller than the larger IROC bumpers, this is thebuilding harnesses on top of built engines - how sophisticatedperfect look for a balanced blend of street car and race.my own 911, I and technical air-cooledMany people swap to this type of bumper but often keep thedeveloped two new oilCSF oil coolers Porsche engines have become oil cooler opening closed off or take an even bigger shortcutcoolers to work perfectly for thesemade perfectly for 5yearsago,ifsomeonewouldhavetoldyouthattheirby leaving the oil cooler cavity empty behind a mesh screen.bumpersone a dual-pass cooler to allowPorsche bumpers naturally aspirated 911 makes 400hp, youd laugh at them,If a center oil cooler has been added into thethe cooler to work in series with the right front roll your eyes, and call them a liar. If someone told you thatcooling loop, theyre oftenfender oil cooler (which weve also developed), or as a single today, youd raise a brow, but you would think twice aboutstand-alone cooler. The other beinga single-pass design secondguessingthem.Porscheenginedevelopmenthaswhichcanbeusedinhighhorsepowerorraceset-ups where there are two fender oil coolers (one on each side). becomesosophisticated,powerlevelsseeingondynoIROC Bumpers sheetsloatingontheinternetseemedtobegetting one-uppedbyanewup andcomingbuilderorThe CSF 911 in its natural habitat The bigger front cavity allows for more room between the enthusiastonamonthlyat California Speedway at theinside of the front bumper and the front tub. The CSF IROC basis. With all of that power,Falken Tire Invitational private track daystyleoilcoolercomeswithaslight15degreetapered comes more heat generatedfemale ports to allow the oil cooler lines to hug the contour by the engine. This is whereof the front bumper without having to cut or modify the mycompany,CSFCooling,universal oil coolers which have had tobumper or tub. This is the latest solution for enthusiast has answered the call withbe retro-itted in to work, not designed tolooking for the race look as well as the added performance innovative,highperfor- it the bumper its being installed in. 99% mance, air-cooledoilcoolerThe CSF 911 world debut at last years SEMA showof a larger oil cooler. And its a hell of a lot cheaper than solutions for Porsche 911.in Las Vegas. Placing in the top 12 of the showsof the time, theyre an afterthought oftentryingtosourcea$10,000usedvintageRSRPorsche Battle of the Builders competition, and showcasingbeing installed after paint and body. motorsports cooler!CSFs new line of front bumper oil coolers27 8'