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Join Date: Jun 2003
Location: Findlay Ohio
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Engine Oil Temperature

Even on a relative cool day, my 77 930's oil temperature will be just below the 250 mark. Seems high to me. If I get on it a few time so that the turbo kicks in it gets even higher. Normal?
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Jeff Fort, Findlay, Ohio

70 914-6 2.5L short stroker
07 Carrera C2S
04 Cayenne S
Old 07-23-2014, 11:20 AM
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No, check your thermostat.
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1978 Porsche 930
1968 Porsche 911S
1964 356C
Old 07-23-2014, 11:51 AM
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Nope, as you suspect... however, it's not always"that bad". Additional cooling helps, but you really need to find out the source of overheating. It could be as simple as AFR or timing or an oil cooler fan, complicated as valves, rings, internal wear... You should not see those temps unless idling for long (traffic) or at the track; and it should go down as soon as you bring the engine speed to its sweet spot.
Old 07-23-2014, 12:00 PM
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Brando
 
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First check your cooler lines going up to the cooler in the fender, they're probably hot but if not the thermostat is a problem. Next check to see what cooler is up there and if it has a fan, get one if you have a carrera cooler with no fan. but as stated above, it can get confusing after those have been checked.
I'd say you have lots of reading ahead of you. I do think that's too hot.
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Old 07-23-2014, 12:12 PM
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Kartoffelkopf
 
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My 2p....I'd get another temp sender to start with, rule out the noddy possibilities first.
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Old 07-23-2014, 12:42 PM
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thanks for the info, guys. Looking at a radiator-type fender cooler to replace the trombone. But I'll check the thermostat this evening first.
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Jeff Fort, Findlay, Ohio

70 914-6 2.5L short stroker
07 Carrera C2S
04 Cayenne S
Old 07-28-2014, 01:15 PM
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the oil lines to the right front fender get hot so I don't think it's the thermostat. today it was in the seventies and the oil temp was normal. by the way, it has the original trombone cooler. i think i will buy and install a radiator-type cooler from elephant.
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Jeff Fort, Findlay, Ohio

70 914-6 2.5L short stroker
07 Carrera C2S
04 Cayenne S
Old 07-29-2014, 05:51 AM
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If the trombone oil cooler lines are hot ,yes that thermostat would be flowing, but what about the thermostat for the oil cooler on the engine? a temperature gun would help identify if that was is working. Then move on to improving the front cooler.
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1978 Porsche 930
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1964 356C
Old 07-29-2014, 03:59 PM
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