mortymower

never owned an air cooled 911 and just curious... i live in MS and it is quite hot and humid (over 100 multiple times in summer) and i was just wondering if these air cooled machines can keep themselves cool, also how is the temp monitored since the is no water to get the temp from? thanks

David in LA

Mississippi can't be worse in terms of temperture and humidity than Hong Kong and there are quite a few aircooled 911s and 993s here. I have never had an overheating problem w/my 993 in Hong Kong.

Svaha

Southern California in the summer can be 100+ almost daily. I don't think driving in traffic at that heat would necessarily be good for the car, but driving at normal speeds I've had no problems. The car has never overheated.

POP993

Similar to what David said... I live in Thailand where temperature is certainly worse than MS. If the car is well maintained and has no fault, overheating is not an issue.

Monique

.... actually, the 993s are air & oil cooled. The oil system is large and fitted with an oil cooler and a thermostatic switch linked to the oil cooler fan.

Unless you track your car, the cooling is fine. I track mine with stock cooling and never had a problem.

On the other hand, if it was a Ferrari (depending on the model) you could have plenty of cooling problems.

Come on in, the water is fine.

coltj

+1 what the earlier posts have said. No problems. When you get the car you should consider installing a (cooling) fan override switch. Helps keep the oil cool if you're stuck in traffic..

http://p-car.com/diy/fanswitch/

Ed Burdell

Since I'm always stuck in traffic, I unplugged this wire located behind the passenger side headlight - oil cooler fan stays on high speed at all times now. Temps stay way cool - one less thing to worry about...of course, I could always do the right thing and just fix my failed ballast resistor (without it, the low speed setting doesn't kick on) and the thing would work as designed!

AOW162435

Morty,
As Ed mentioned, you may wish to check the oil cooler fan ballast resistor. These seem prone to failure with heat & age. It's a $35 part but takes some effort and generous amount of cursing to replace.

Oil is the lifeblood of these engines - as such Porsche felt compelled to provide three gauges with which to monitor it. As long as the oil temp gauge stays below the 9:00 position, all should be well. Naturally oil pressure and level should be monitored as well.

Andreas

Svaha

There is a way to jumper the relays for either the oil cooler blower fan or AC cooler blower fan in the fusebox. The result will be that the fan will come on high speed at the point that it would normally have started at low speed, or nine degrees earlier. The ballasts seem to have a relatively short lifespan and are expensive or difficult to replace, depending on whether you DIY.

If either of your ballasts is shot, in the upper left corner of the trunk, within the fuse box: Oil cooler blower fan is relay R04, AC cooler blower fan is relay R14. The fix is to jumper(put a small piece of shielded wire) between #6(slow speed start signal) and #1 (fast speed start signal) on the relay plug. The numbers 1 and 6 are printed on the white area within the fuse box that the relay plugs into. You'll never have to replace the ballasts again.

Caution: Keep in mind the relay terminals are energized (12V)
__________________

mortymower

what three gauges are there, oil temp, pressure, and what else

sidned

Make sure you take the engine tray off if you want to reduce heat in the engine

pedsurg

Oil certainly is the life blood of these cars. Some gurus on this board claim a direct relationship between engine life and oil operation temperatures. I've added an auxillary oil cooler to the 96 years ago to good effect and will place one in the 97 this week or next.

Jack
Sunny Tampa

chris walrod

What water?

mortymower

he means... "come on in the oil is fine"

FLYT993

Level.