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Registered
Join Date: Jul 2000
Location: Bend, OR USA
Posts: 372
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72 911t RUNS HOT, HELP
I have a 72 911T which runs hot. It's not a problem in the Winter but in the Spring and Summer it gets me a little worried. If I'm driving with a heavy foot going up big hills the gauge will climb up to almost 250. 250 is too hot!
Any suggestions? I hope to avoid adding an oil cooler. T |
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01-03-2002, 04:05 PM
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Registered
Join Date: Apr 2001
Location: Linn County, Oregon
Posts: 48,527
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Oh Lord...forgive me. Dare I say it? Here is a chance to really test the COOL COLLAR!
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01-03-2002, 04:12 PM
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Registered
Join Date: May 2000
Location: Los Alamos, NM, USA
Posts: 6,044
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Some suggestions:
Check timing, if advanced too far this can cause overheating. Ensure fan produced cooling air is going where it should: check sparkplug wire to intake valve cover seals, check that all heating air hoses are intact and not leaking and check that rubber seal running around engine sheet metal is intact and sealing the top of the engine from the bottom. Remove fan/alternator and clean off any debris (leaves, dirt, mice nests, etc.) on top of engine. Drain and remove oil tank and clean exterior of tank of mud, oil and other collected road debris. Drop engine and transmission, remove and clean engine mounted oil cooler. Good time to replace oil cooler seals and oil thermostat seals. Cheers,  Jim
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01-03-2002, 06:16 PM
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Registered
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Don't forget thermostat
__________________
72 911 Although it is done at the moment, it will never be finished. |
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01-03-2002, 06:34 PM
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Warren Hall Student
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Something must not be right because a 72T MFI is a cool running motor. It takes mine almost a half hour to get up to 180 deg. Does your oil level indicator gauge change readings when you hit 180? Mine does, so I know that the thermostat for the oil cooler has opened. Did anyone mention the fan belt? That's a common cause of overheating, if there are the wrong number of shims on the pulley or the belt is old and worn. Did this problem occur after the motor was worked on? If so maybe the cooling deflectors were not installed properly. Also those deflectors can be modified with a simple pair of tin snips to keep the motor 10 deg cooler. However getting to them involves taking off the induction so as to lift the yellow fiberglass air shroud. Although mine aren't modified I've never had hot running problem.
That you get the heat goin up hills with you foot in the throttle does sound like timing might be to advanced. Bobby 72' Coupe 72' Roadster Project |
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01-03-2002, 11:46 PM
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Tobluforu
73' Porsche Targa
