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Join Date: Aug 2011
Location: The Wet Side
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'bout 225.
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Join Date: Jul 2011
Location: Fort Lauderdale
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Been extremely busy, just returned from a couple of months working on a Super Yacht in Europe France & Italy in the Mediterranean. Cote d'Azur; had to temporarily put all my 911 PFC new prototype projects on hold as well as existing PFC design production
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It's okay, he break was rather enjoyable....
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Senior Member
Join Date: Jun 2000
Location: N. Phoenix AZ USA
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My car runs at 194f all the time even when its really hot outside. Turning the A/C on brings it up to about 215f but thats about it. I also work with airplanes, so air-cooled engines are my forte. You WANT your oil temps to be at or above 100c/212f so that it gets good and hot and also boils the moisture out of the oil. One thing is that if the oil temp gauge is showing 194, the oil temp at several areas in the system are well above this point, so you want the oil temps to be in this ballpark for long life of the engine and oil. Any good oil will go 230-240 degrees with no issues. Anything above this temp and IMHO you should turn the A/C off and let the oil temps cool down. Might want to look at our very own Chuck Moreland's page on oil temps located here: ELEPHANT RACING Tech Topic, Oil Temperature and Engine Life
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2013 Jag XF, 2002 Dodge Ram 2500 Cummins (the workhorse), 1992 Jaguar XJ S-3 V-12 VDP (one of only 100 examples made), 1969 Jaguar XJ (been in the family since new), 1985 911 Targa backdated to 1973 RS specs with a 3.6 shoehorned in the back, 1959 Austin Healey Sprite (former SCCA H-Prod), 1995 BMW R1100RSL, 1971 & '72 BMW R75/5 "Toaster," Ural Tourist w/sidecar, 1949 Aeronca Sedan / QB Last edited by Joeaksa; 08-08-2012 at 07:17 AM.. |
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I recently bought an IR thermometer to double check. After a typical drive home in the heat of the day (105*-110* ambient) running the A/C, I was reading 220* at the temp sender.
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'80 RoW 911 SC non-sunroof coupe in Guards Red It's not a Carrera.... It's a Super Carrera! |
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Join Date: Jun 2000
Location: N. Phoenix AZ USA
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And what did the gauge say? How close was it to the temp of the sender?
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2013 Jag XF, 2002 Dodge Ram 2500 Cummins (the workhorse), 1992 Jaguar XJ S-3 V-12 VDP (one of only 100 examples made), 1969 Jaguar XJ (been in the family since new), 1985 911 Targa backdated to 1973 RS specs with a 3.6 shoehorned in the back, 1959 Austin Healey Sprite (former SCCA H-Prod), 1995 BMW R1100RSL, 1971 & '72 BMW R75/5 "Toaster," Ural Tourist w/sidecar, 1949 Aeronca Sedan / QB |
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I'd guess maybe 3/16" above the white mark. If 200* is the needle just above the white mark, than I think the sender/guage are pretty close to what the IR therm read.
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'80 RoW 911 SC non-sunroof coupe in Guards Red It's not a Carrera.... It's a Super Carrera! |
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Josh -- the first white hash mark above the white block on the bottom (Style B) is 90C/194F. That's the mark you're referring to, yes?
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Dale 1985 Carrera 3.2 -- SOLD 2026 Jaguar F-Pace / 2025 Ford Bronco Sport |
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Join Date: Jul 2011
Location: Fort Lauderdale
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July hottest month on record in U.S.
July was the hottest month in the contiguous United States since record-keeping began in 1895, government scientists have said, a trend that meteorologists attribute to climate change.
hows your 911 a/c working in the hotter parts of the USA? |
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Ken 1986 930 2016 R1200RS |
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Just fine actually. If I manage to get covered parking at work, I have a cool cabin within minutes on my drive home. If it's been sitting in the sun and gets heat soaked, it's more like 15 minutes until it's comfortable.
Regarding engine oil temps, as long as I drive reasonable and don't drive to redline in 1st and 2nd gears like I do in the morning ![]() Here's how I mounted my condensor in my new FG ducktail: ![]() ![]() ![]()
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'80 RoW 911 SC non-sunroof coupe in Guards Red It's not a Carrera.... It's a Super Carrera! |
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At up to about 250 F OIL temps should be safe on your air cooled 911, but just above 250 F your oil probably will just start to slowly breaking down if ran for extended periods of time; personally I get Nervous above 250
Note: I have a lot of experience running my 911 with A/C for more than 20 years usually without a front oil cooler and over the years I have exceeded 250 several times without any damage. Regardless I get nerviouse above 250 F in stop and go traffic and extended idling in Summer temps written about between 187=200 or so are for water cooled engines and the radiator water should be thermostatically controlled to normally be no more then 187 F at most; most of these thermostats for auto radiator water temps are designed to maintain 180-185 F max; some diesel engines water thermostats run a few degrees higher i.e. 187 max; Note the water jackets on a water cooled car running water temp at i.e. 185 F, the oil in the oil pan is hotter often someplace in the lower 200s F Last edited by KelogGes; 08-11-2012 at 04:49 PM.. |
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Location: South Cackalacky
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I may be a little off but normal operating temp for water cooled engines is around 200-230 as well. The 180* thermostat opens at this temp, but not before, much like the oil thermostats for air-cooled motors to not allow cooling of the liquid be it oil or water until it reaches proper operating temp--not because the therm rating is the operating temp.
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Join Date: Jul 2011
Location: Fort Lauderdale
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Josh it looks like you are making your rear condenser install look nicer
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Join Date: Jul 2011
Location: Fort Lauderdale
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![]() Quote:
You will need more surface area in your rear PFC, To be honest yours is just not big enough to get your temps down quicker and lower for what you really need! My cabin temps drop from when the car is sitting parked sitting in the sun at about 93 ambient and I step inside and the cabin is 150 plus +++ and I drive about 1/4 to 1/2 a mile or so (just a few blocks) in only a few minutes and the cabin starts to cool good with low 30s vent temps. but i have not been monitoring cabin temp only vent temps. I say this from my personal experience trying the same PFC you have and are using, after tweaking it everyway possible; because I was not happy using the same PFC you have is why I got angry and custom designed and made my own; which is designed to use every possible square inch/milimeter of the full intake air opening; and then because I still wanted colder and faster cabin temp drops I designed my front PFC and made it even larger then Behr/Porsche did then I changed the front fan blower and this made it fairly easy to get constant low 30's vent temps. I did a ton of testing to say the least before I was happy with my designes. This picture is a new front and rear PFC matched set I just finished, I made this picture yesterday ![]() Last edited by KelogGes; 08-11-2012 at 06:48 PM.. |
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Join Date: Jul 2011
Location: Fort Lauderdale
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Josh D are you running the stock OEM tube and fin front condenser with your newer rear deck lid PFC?
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It will be replaced down the road.
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'80 RoW 911 SC non-sunroof coupe in Guards Red It's not a Carrera.... It's a Super Carrera! |
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'80 RoW 911 SC non-sunroof coupe in Guards Red It's not a Carrera.... It's a Super Carrera! |
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get a Kuehl front condenser and call it a day. Quality is second to none... less than $300.
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83 SC Targa -- 3.2SS, GT2-108 Dougherty Cams, 9.5:1 JE Pistons, Supertec Studs, PMO ITB's, MS2 EFI, SSI's, Recurved Dizzy, MSD, Backdated Dansk Sport Stainless 2 in 1 out, Elephant Polybronze, Turbo Tie Rods, Bilstein HD's, Hollow 21-27 TBs, Optima Redtop 34R, Griffiths-ZIMS AC, Seine Shifter, Elephant Racing Oil Cooling. |
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